6:27 a.m.
Hi,
i have a few questions :
1) my facts are in fact java Maps, is there an easy way to deal with them in
guvnor? it's not like in the example where facts are objects and we give
guvnor the Pojo model to know what we can do with it
for example i have :
$m : Map((this["attribute1_of_the_map"] == "test1"))
How to deal with the map and have a prepopulated list of properties of the
map? And to store it in the variable $m. Without using the "free from drl"
where we have to write it by hand.
2) how to deal with global constant with guvnor?
i have something like :
WorkingMemory wm = drools.getWorkingMemory();
wm.setGlobal("resultValue", "OK");
Is it a direct way to play with global constant in Guvnor? Without using the
"free from drl" where we have to write it by hand.
3) for stopping firing rules after one rule fire successfully, do you know
if there is an option to do that?
For now i insert a boolean in the session and the first condition in all my
rules is that this boolean is there. When a rule fires successfully, i
retract it. I suppose there is a bettre way to do it?
Thanks in advance for your help
--
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6:51 a.m.
Hi,
1) my facts are in fact java Maps, is there an easy way to deal with them in
guvnor? it's not like in the example where facts are objects and we give
guvnor the Pojo model to know what we can do with it
for example i have :
$m : Map((this["attribute1_of_the_map"] == "test1"))
How to deal with the map and have a prepopulated list of properties of the
map? And to store it in the variable $m. Without using the "free from drl"
where we have to write it by hand.
I think you could use DSL for achieve this. You could define your own DSL
saying for example *There is a Test=Map((this["attribute1_of_the_map"] ==
"test1" *I would leave the variable binding to the editor. So when you add
this particular pattern to a rule, you can bind it it you want to.
2) how to deal with global constant with guvnor?
i have something like :
WorkingMemory wm = drools.getWorkingMemory();
wm.setGlobal("resultValue", "OK");
Is it a direct way to play with global constant in Guvnor? Without using the
"free from drl" where we have to write it by hand.
The values of the globals are set in runtime. Guvnor doesn't create any
ksession (or working memory) for rules authoring. There is no need to do
that. So, you can declare your globals in Guvnor's package area and then
use them in your rules. When an application uses these rules, and creates a
ksession from them, it must provide the value for these globals.
By the way, which version of Drools are you using?
3) for stopping firing rules after one rule fire successfully, do you know
if there is an option to do that?
For now i insert a boolean in the session and the first condition in all my
rules is that this boolean is there. When a rule fires successfully, i
retract it. I suppose there is a bettre way to do it?
I think the approach you have chosen is elegant enough. Of course that it
will only prevents new activations to happen but it will not prevent current
activations to be executed. For a cleaner implementation, you can make a
super-rule with that condition and then make all your rules to inherit from
it.
There is actually a way to force the engine to stop (I don't remember it,
but I'm pretty sure it is documented), but I don't know if that would be the
best solution since I don't know if it has any collateral effect.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Tue, Mar 1, 2011 at 9:27 AM, ioda100 <eddyhautot(a)gmail.com> wrote:
Hi,
i have a few questions :
1) my facts are in fact java Maps, is there an easy way to deal with them
in
guvnor? it's not like in the example where facts are objects and we give
guvnor the Pojo model to know what we can do with it
for example i have :
$m : Map((this["attribute1_of_the_map"] == "test1"))
How to deal with the map and have a prepopulated list of properties of the
map? And to store it in the variable $m. Without using the "free from drl"
where we have to write it by hand.
2) how to deal with global constant with guvnor?
i have something like :
WorkingMemory wm = drools.getWorkingMemory();
wm.setGlobal("resultValue", "OK");
Is it a direct way to play with global constant in Guvnor? Without using
the
"free from drl" where we have to write it by hand.
3) for stopping firing rules after one rule fire successfully, do you know
if there is an option to do that?
For now i insert a boolean in the session and the first condition in all my
rules is that this boolean is there. When a rule fires successfully, i
retract it. I suppose there is a bettre way to do it?
Thanks in advance for your help
--
View this message in context:
http://drools-java-rules-engine.46999.n3.nabble.com/Guvnor-and-drools-imp...
Sent from the Drools - User mailing list archive at Nabble.com.
_______________________________________________
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8:39 a.m.
Thanks for your quick answer Esteban.
1) Ok i will have a look at DSL. In fact in my map i know all the properties
(about 200). It would be cool to be able to have a drop down list with all
these attributes as when we do it with objects for which we gave Pojo to
Guvnor.
2) Yes i set the global constant i my application and put it in the session.
But when a rule fire, it has to send back a value "OK" for example to the
application. So i use the global consatnt to do that. As you say guvnor
don't create a working memory (needed to change the global constant), i have
to write by hand the lines : WorkingMemory wm = drools.getWorkingMemory();
wm.setGlobal("resultValue", "OK"); ?
i use version 5.1 of drools and guvnor.
3) ok i will stay with this solution. yes i only need to stop after the end
of the rule that has successfully fired. I have tried other things like
workingMemory.stop() or something like this but it was not working.
Thank you again
On Tue, Mar 1, 2011 at 1:55 PM, Esteban [via Drools - Java Rules Engine] <
ml-node+2602877-745781886-237284(a)n3.nabble.com> wrote:
Hi,
1) my facts are in fact java Maps, is there an easy way to deal with them
in
guvnor? it's not like in the example where facts are objects and we give
guvnor the Pojo model to know what we can do with it
for example i have :
$m : Map((this["attribute1_of_the_map"] == "test1"))
How to deal with the map and have a prepopulated list of properties of the
map? And to store it in the variable $m. Without using the "free from drl"
where we have to write it by hand.
I think you could use DSL for achieve this. You could define your own DSL
saying for example *There is a Test=Map((this["attribute1_of_the_map"] ==
"test1" *I would leave the variable binding to the editor. So when you add
this particular pattern to a rule, you can bind it it you want to.
2) how to deal with global constant with guvnor?
i have something like :
WorkingMemory wm = drools.getWorkingMemory();
wm.setGlobal("resultValue", "OK");
Is it a direct way to play with global constant in Guvnor? Without using
the
"free from drl" where we have to write it by hand.
The values of the globals are set in runtime. Guvnor doesn't create any
ksession (or working memory) for rules authoring. There is no need to do
that. So, you can declare your globals in Guvnor's package area and then
use them in your rules. When an application uses these rules, and creates a
ksession from them, it must provide the value for these globals.
By the way, which version of Drools are you using?
3) for stopping firing rules after one rule fire successfully, do you know
if there is an option to do that?
For now i insert a boolean in the session and the first condition in all my
rules is that this boolean is there. When a rule fires successfully, i
retract it. I suppose there is a bettre way to do it?
I think the approach you have chosen is elegant enough. Of course that it
will only prevents new activations to happen but it will not prevent current
activations to be executed. For a cleaner implementation, you can make a
super-rule with that condition and then make all your rules to inherit from
it.
There is actually a way to force the engine to stop (I don't remember it,
but I'm pretty sure it is documented), but I don't know if that would be the
best solution since I don't know if it has any collateral effect.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Tue, Mar 1, 2011 at 9:27 AM, ioda100 <[hidden
email]<http://user/SendEmail.jtp?type=node&node=2602877&i=0>
> wrote:
> Hi,
>
> i have a few questions :
>
> 1) my facts are in fact java Maps, is there an easy way to deal with them
> in
> guvnor? it's not like in the example where facts are objects and we give
> guvnor the Pojo model to know what we can do with it
>
> for example i have :
> $m : Map((this["attribute1_of_the_map"] == "test1"))
>
> How to deal with the map and have a prepopulated list of properties of the
> map? And to store it in the variable $m. Without using the "free from drl"
> where we have to write it by hand.
>
> 2) how to deal with global constant with guvnor?
>
> i have something like :
> WorkingMemory wm = drools.getWorkingMemory();
> wm.setGlobal("resultValue", "OK");
>
> Is it a direct way to play with global constant in Guvnor? Without using
> the
> "free from drl" where we have to write it by hand.
>
> 3) for stopping firing rules after one rule fire successfully, do you know
> if there is an option to do that?
> For now i insert a boolean in the session and the first condition in all
> my
> rules is that this boolean is there. When a rule fires successfully, i
> retract it. I suppose there is a bettre way to do it?
>
> Thanks in advance for your help
>
> --
> View this message in context:
>
http://drools-java-rules-engine.46999.n3.nabble.com/Guvnor-and-drools-imp...
> Sent from the Drools - User mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> [hidden email] <http://user/SendEmail.jtp?type=node&node=2602877&i=1>
>
> https://lists.jboss.org/mailman/listinfo/rules-users
>
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9:04 a.m.
2011/3/1 ioda100 <eddyhautot(a)gmail.com>
Thanks for your quick answer Esteban.
1) Ok i will have a look at DSL. In fact in my map i know all the
properties (about 200). It would be cool to be able to have a drop down list
with all these attributes as when we do it with objects for which we gave
Pojo to Guvnor.
2) Yes i set the global constant i my application and put it in the
session. But when a rule fire, it has to send back a value "OK" for example
to the application. So i use the global consatnt to do that. As you say
guvnor don't create a working memory (needed to change the global constant),
i have to write by hand the lines : WorkingMemory wm =
drools.getWorkingMemory();
wm.setGlobal("resultValue", "OK"); ?
I would not change the entire global object; I would just change a field:
global
Result result;
...
then
result.setValue( "OK ");
i use version 5.1 of drools and guvnor.
3) ok i will stay with this solution. yes i only need to stop after the end
of the rule that has successfully fired. I have tried other things like
workingMemory.stop() or something like this but it was not working.
Calling fireUntilHalt() and calling halt() from an ActivationEventListener
would be a technique that doesn't require any messing with the rules.
(Except, to be on the safe side, the addition of a very low-salience rule
acting as a sentinel if nothing else fires.)
-W
Thank you again
On Tue, Mar 1, 2011 at 1:55 PM, Esteban [via Drools - Java Rules Engine] <[hidden
email] <http://user/SendEmail.jtp?type=node&node=2603551&i=0>> wrote:
> Hi,
>
> 1) my facts are in fact java Maps, is there an easy way to deal with them
> in
> guvnor? it's not like in the example where facts are objects and we give
> guvnor the Pojo model to know what we can do with it
>
> for example i have :
> $m : Map((this["attribute1_of_the_map"] == "test1"))
>
> How to deal with the map and have a prepopulated list of properties of the
> map? And to store it in the variable $m. Without using the "free from drl"
> where we have to write it by hand.
>
> I think you could use DSL for achieve this. You could define your own DSL
> saying for example *There is a Test=Map((this["attribute1_of_the_map"] ==
> "test1" *I would leave the variable binding to the editor. So when you
> add this particular pattern to a rule, you can bind it it you want to.
>
> 2) how to deal with global constant with guvnor?
>
> i have something like :
> WorkingMemory wm = drools.getWorkingMemory();
> wm.setGlobal("resultValue", "OK");
>
> Is it a direct way to play with global constant in Guvnor? Without using
> the
> "free from drl" where we have to write it by hand.
>
> The values of the globals are set in runtime. Guvnor doesn't create any
> ksession (or working memory) for rules authoring. There is no need to do
> that. So, you can declare your globals in Guvnor's package area and then
> use them in your rules. When an application uses these rules, and creates a
> ksession from them, it must provide the value for these globals.
> By the way, which version of Drools are you using?
>
> 3) for stopping firing rules after one rule fire successfully, do you know
> if there is an option to do that?
> For now i insert a boolean in the session and the first condition in all
> my
> rules is that this boolean is there. When a rule fires successfully, i
> retract it. I suppose there is a bettre way to do it?
>
> I think the approach you have chosen is elegant enough. Of course that it
> will only prevents new activations to happen but it will not prevent current
> activations to be executed. For a cleaner implementation, you can make a
> super-rule with that condition and then make all your rules to inherit from
> it.
> There is actually a way to force the engine to stop (I don't remember it,
> but I'm pretty sure it is documented), but I don't know if that would be the
> best solution since I don't know if it has any collateral effect.
>
> Best Regards,
>
>
> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>
> Esteban Aliverti
> - Developer @ http://www.plugtree.com
> - Blog @ http://ilesteban.wordpress.com
>
>
> On Tue, Mar 1, 2011 at 9:27 AM, ioda100 <[hidden
email]<http://user/SendEmail.jtp?type=node&node=2602877&i=0>
> > wrote:
>
>> Hi,
>>
>> i have a few questions :
>>
>> 1) my facts are in fact java Maps, is there an easy way to deal with them
>> in
>> guvnor? it's not like in the example where facts are objects and we give
>> guvnor the Pojo model to know what we can do with it
>>
>> for example i have :
>> $m : Map((this["attribute1_of_the_map"] == "test1"))
>>
>> How to deal with the map and have a prepopulated list of properties of
>> the
>> map? And to store it in the variable $m. Without using the "free from
>> drl"
>> where we have to write it by hand.
>>
>> 2) how to deal with global constant with guvnor?
>>
>> i have something like :
>> WorkingMemory wm = drools.getWorkingMemory();
>> wm.setGlobal("resultValue", "OK");
>>
>> Is it a direct way to play with global constant in Guvnor? Without using
>> the
>> "free from drl" where we have to write it by hand.
>>
>> 3) for stopping firing rules after one rule fire successfully, do you
>> know
>> if there is an option to do that?
>> For now i insert a boolean in the session and the first condition in all
>> my
>> rules is that this boolean is there. When a rule fires successfully, i
>> retract it. I suppose there is a bettre way to do it?
>>
>> Thanks in advance for your help
>>
>> --
>> View this message in context:
>>
http://drools-java-rules-engine.46999.n3.nabble.com/Guvnor-and-drools-imp...
>> Sent from the Drools - User mailing list archive at Nabble.com.
>> _______________________________________________
>> rules-users mailing list
>> [hidden email]
<http://user/SendEmail.jtp?type=node&node=2602877&i=1>
>>
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
> _______________________________________________
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>
>
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> below:
>
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10:07 a.m.
thank you i will try for the global constant
for the halt, i see a lot of trouble on it on google, i think i will let
like this
2011/3/1 Wolfgang Laun <wolfgang.laun(a)gmail.com>
2011/3/1 ioda100 <eddyhautot(a)gmail.com>
Thanks for your quick answer Esteban.
>
> 1) Ok i will have a look at DSL. In fact in my map i know all the
> properties (about 200). It would be cool to be able to have a drop down list
> with all these attributes as when we do it with objects for which we gave
> Pojo to Guvnor.
>
>
> 2) Yes i set the global constant i my application and put it in the
> session. But when a rule fire, it has to send back a value "OK" for
example
> to the application. So i use the global consatnt to do that. As you say
> guvnor don't create a working memory (needed to change the global constant),
> i have to write by hand the lines : WorkingMemory wm =
> drools.getWorkingMemory();
> wm.setGlobal("resultValue", "OK"); ?
>
> I would not change the entire global object; I would just change a field:
global Result result;
...
then
result.setValue( "OK ");
> i use version 5.1 of drools and guvnor.
>
> 3) ok i will stay with this solution. yes i only need to stop after the
> end of the rule that has successfully fired. I have tried other things like
> workingMemory.stop() or something like this but it was not working.
>
>
Calling fireUntilHalt() and calling halt() from an ActivationEventListener
would be a technique that doesn't require any messing with the rules.
(Except, to be on the safe side, the addition of a very low-salience rule
acting as a sentinel if nothing else fires.)
-W
> Thank you again
>
>
>
>
> On Tue, Mar 1, 2011 at 1:55 PM, Esteban [via Drools - Java Rules Engine]
> <[hidden email]
<http://user/SendEmail.jtp?type=node&node=2603551&i=0>>wrote:
>
>> Hi,
>>
>> 1) my facts are in fact java Maps, is there an easy way to deal with them
>> in
>> guvnor? it's not like in the example where facts are objects and we give
>> guvnor the Pojo model to know what we can do with it
>>
>> for example i have :
>> $m : Map((this["attribute1_of_the_map"] == "test1"))
>>
>> How to deal with the map and have a prepopulated list of properties of
>> the
>> map? And to store it in the variable $m. Without using the "free from
>> drl"
>> where we have to write it by hand.
>>
>> I think you could use DSL for achieve this. You could define your own
>> DSL saying for example *There is a
>> Test=Map((this["attribute1_of_the_map"] == "test1" *I would
leave the
>> variable binding to the editor. So when you add this particular pattern to a
>> rule, you can bind it it you want to.
>>
>> 2) how to deal with global constant with guvnor?
>>
>> i have something like :
>> WorkingMemory wm = drools.getWorkingMemory();
>> wm.setGlobal("resultValue", "OK");
>>
>> Is it a direct way to play with global constant in Guvnor? Without using
>> the
>> "free from drl" where we have to write it by hand.
>>
>> The values of the globals are set in runtime. Guvnor doesn't create any
>> ksession (or working memory) for rules authoring. There is no need to do
>> that. So, you can declare your globals in Guvnor's package area and then
>> use them in your rules. When an application uses these rules, and creates a
>> ksession from them, it must provide the value for these globals.
>> By the way, which version of Drools are you using?
>>
>> 3) for stopping firing rules after one rule fire successfully, do you
>> know
>> if there is an option to do that?
>> For now i insert a boolean in the session and the first condition in all
>> my
>> rules is that this boolean is there. When a rule fires successfully, i
>> retract it. I suppose there is a bettre way to do it?
>>
>> I think the approach you have chosen is elegant enough. Of course that it
>> will only prevents new activations to happen but it will not prevent current
>> activations to be executed. For a cleaner implementation, you can make a
>> super-rule with that condition and then make all your rules to inherit from
>> it.
>> There is actually a way to force the engine to stop (I don't remember it,
>> but I'm pretty sure it is documented), but I don't know if that would be
the
>> best solution since I don't know if it has any collateral effect.
>>
>> Best Regards,
>>
>>
>> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>>
>> Esteban Aliverti
>> - Developer @ http://www.plugtree.com
>> - Blog @ http://ilesteban.wordpress.com
>>
>>
>> On Tue, Mar 1, 2011 at 9:27 AM, ioda100 <[hidden
email]<http://user/SendEmail.jtp?type=node&node=2602877&i=0>
>> > wrote:
>>
>>> Hi,
>>>
>>> i have a few questions :
>>>
>>> 1) my facts are in fact java Maps, is there an easy way to deal with
>>> them in
>>> guvnor? it's not like in the example where facts are objects and we give
>>> guvnor the Pojo model to know what we can do with it
>>>
>>> for example i have :
>>> $m : Map((this["attribute1_of_the_map"] == "test1"))
>>>
>>> How to deal with the map and have a prepopulated list of properties of
>>> the
>>> map? And to store it in the variable $m. Without using the "free from
>>> drl"
>>> where we have to write it by hand.
>>>
>>> 2) how to deal with global constant with guvnor?
>>>
>>> i have something like :
>>> WorkingMemory wm = drools.getWorkingMemory();
>>> wm.setGlobal("resultValue", "OK");
>>>
>>> Is it a direct way to play with global constant in Guvnor? Without using
>>> the
>>> "free from drl" where we have to write it by hand.
>>>
>>> 3) for stopping firing rules after one rule fire successfully, do you
>>> know
>>> if there is an option to do that?
>>> For now i insert a boolean in the session and the first condition in all
>>> my
>>> rules is that this boolean is there. When a rule fires successfully, i
>>> retract it. I suppose there is a bettre way to do it?
>>>
>>> Thanks in advance for your help
>>>
>>> --
>>> View this message in context:
>>>
http://drools-java-rules-engine.46999.n3.nabble.com/Guvnor-and-drools-imp...
>>> Sent from the Drools - User mailing list archive at Nabble.com.
>>> _______________________________________________
>>> rules-users mailing list
>>> [hidden email]
<http://user/SendEmail.jtp?type=node&node=2602877&i=1>
>>>
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>
>>
>>
>> _______________________________________________
>> rules-users mailing list
>> [hidden email]
<http://user/SendEmail.jtp?type=node&node=2602877&i=2>
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
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>> discussion below:
>>
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>>
>
>
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>
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>
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>
>
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9:07 a.m.
Le 01/03/2011 15:39, ioda100 a écrit :
Thanks for your quick answer Esteban.
1) Ok i will have a look at DSL. In fact in my map i know all the
properties (about 200). It would be cool to be able to have a drop
down list with all these attributes as when we do it with objects for
which we gave Pojo to Guvnor.
You can define enumerations for a particular
attribute.
Inside a DSL you can constrain a placeholder with that enumeration.
And finally, enums can be static, or dynamic (a interface to implement
that returns a list of values).
search the Guvnor's doc in these chapters
1.4.2.4.8. Data enumerations (drop down list configurations)
10:05 a.m.
Thank you i will have a look to see exactly how to do.
When in the import i put import java.util.Map; i have access to Map in the
objects in the When condition. So it's possible to have a drop-down list to
have the choice between all properties of the Map defined in a DSL file
(even dynamacally)?
2011/3/1 Vincent Legendre <vincent.legendre(a)eurodecision.com>
Le 01/03/2011 15:39, ioda100 a écrit :
Thanks for your quick answer Esteban.
1) Ok i will have a look at DSL. In fact in my map i know all the
properties (about 200). It would be cool to be able to have a drop down list
with all these attributes as when we do it with objects for which we gave
Pojo to Guvnor.
You can define enumerations for a particular attribute.
Inside a DSL you can constrain a placeholder with that enumeration.
And finally, enums can be static, or dynamic (a interface to implement that
returns a list of values).
search the Guvnor's doc in these chapters
1.4.2.4.8. Data enumerations (drop down list configurations)
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
4 p.m.
Yes but for this i will be obliged to create a POJO of an object. And
for attributes of that object in DSL i can define values that can take
this attribute?
Maybe i don't understand but i don't see how to do with this.
My case :
I have Maps in the session. Each Map has for example 5 properties
("prop1", "prop2", "prop3", "prop4",
"prop51") and the value is a
string. The Map is Map<String, Object> but generally Object is a String.
So in the When clause i have something like that :
$m : Map((this["prop1"] == "test1"))
I have included java.utils.Map in Guvnor. So when i add a when clause i
can choose Map in the list but impossible to have "prop1" to "prop5"
in
a drop down list for attributes of the Map.
Would it be possible to create a Pojo for Map or would it be in conflict
with the Map of Java?
Thank you for your time
Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules Engine] a
écrit :
Le 01/03/2011 15:39, ioda100 a écrit :
> Thanks for your quick answer Esteban.
>
> 1) Ok i will have a look at DSL. In fact in my map i know all the
> properties (about 200). It would be cool to be able to have a drop
> down list with all these attributes as when we do it with objects for
> which we gave Pojo to Guvnor.
You can define enumerations for a particular attribute.
Inside a DSL you can constrain a placeholder with that enumeration.
And finally, enums can be static, or dynamic (a interface to implement
that returns a list of values).
search the Guvnor's doc in these chapters
1.4.2.4.8. Data enumerations (drop down list configurations)
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4:24 p.m.
You need to create the DSL first.
Follow these steps:
1.- Add java.util.Map to package imports (I think you already did this)
2.- Create a new Enumeration with the following content:
*'Map.properties': ['prop1', 'prop2', 'prop3']*
3.- Create a new DSL with this content:
*[when]The property {key:ENUM:Map.properties} of the map is
{value}=Map((this["{key}"] == "{value}"))*
4.- Create a new Rule and add the DSL sentence to the WHEN part. You should
see the drop down.
Note the name of the enumeration and how the variable {key} is defined in
the DSL. I think you can also read the enumerations from a Java Enum present
on your model, but I'm not sure about it. Does anyone know about this?
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/1 ioda100 <eddyhautot(a)gmail.com>
Yes but for this i will be obliged to create a POJO of an object. And
for
attributes of that object in DSL i can define values that can take this
attribute?
Maybe i don't understand but i don't see how to do with this.
My case :
I have Maps in the session. Each Map has for example 5 properties ("prop1",
"prop2", "prop3", "prop4", "prop51") and the
value is a string. The Map is
Map<String, Object> but generally Object is a String.
So in the When clause i have something like that :
$m : Map((this["prop1"] == "test1"))
I have included java.utils.Map in Guvnor. So when i add a when clause i can
choose Map in the list but impossible to have "prop1" to "prop5" in a
drop
down list for attributes of the Map.
Would it be possible to create a Pojo for Map or would it be in conflict
with the Map of Java?
Thank you for your time
Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules Engine] a
écrit :
Le 01/03/2011 15:39, ioda100 a écrit :
Thanks for your quick answer Esteban.
1) Ok i will have a look at DSL. In fact in my map i know all the
properties (about 200). It would be cool to be able to have a drop down list
with all these attributes as when we do it with objects for which we gave
Pojo to Guvnor.
You can define enumerations for a particular attribute.
Inside a DSL you can constrain a placeholder with that enumeration.
And finally, enums can be static, or dynamic (a interface to implement that
returns a list of values).
search the Guvnor's doc in these chapters
1.4.2.4.8. Data enumerations (drop down list configurations)
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4:28 p.m.
Even more; if you don't want to rule's authors to see the real key value of
the map in the drop down, you can use aliases in the enumeration definition:
*'Map.properties': ['prop1=Property 1', 'prop2=Property 2',
'prop3=Property
3']
*Best Regards,*
*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
On Tue, Mar 1, 2011 at 7:24 PM, Esteban Aliverti <esteban.aliverti(a)gmail.com
wrote:
You need to create the DSL first.
Follow these steps:
1.- Add java.util.Map to package imports (I think you already did this)
2.- Create a new Enumeration with the following content:
*'Map.properties': ['prop1', 'prop2', 'prop3']*
3.- Create a new DSL with this content:
*[when]The property {key:ENUM:Map.properties} of the map is
{value}=Map((this["{key}"] == "{value}"))*
4.- Create a new Rule and add the DSL sentence to the WHEN part. You should
see the drop down.
Note the name of the enumeration and how the variable {key} is defined in
the DSL. I think you can also read the enumerations from a Java Enum present
on your model, but I'm not sure about it. Does anyone know about this?
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/1 ioda100 <eddyhautot(a)gmail.com>
> Yes but for this i will be obliged to create a POJO of an object. And for
> attributes of that object in DSL i can define values that can take this
> attribute?
>
> Maybe i don't understand but i don't see how to do with this.
>
> My case :
> I have Maps in the session. Each Map has for example 5 properties
> ("prop1", "prop2", "prop3", "prop4",
"prop51") and the value is a string.
> The Map is Map<String, Object> but generally Object is a String.
> So in the When clause i have something like that :
> $m : Map((this["prop1"] == "test1"))
> I have included java.utils.Map in Guvnor. So when i add a when clause i
> can choose Map in the list but impossible to have "prop1" to
"prop5" in a
> drop down list for attributes of the Map.
> Would it be possible to create a Pojo for Map or would it be in conflict
> with the Map of Java?
>
> Thank you for your time
>
>
> Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules Engine] a
> écrit :
>
> Le 01/03/2011 15:39, ioda100 a écrit :
>
> Thanks for your quick answer Esteban.
>
> 1) Ok i will have a look at DSL. In fact in my map i know all the
> properties (about 200). It would be cool to be able to have a drop down list
> with all these attributes as when we do it with objects for which we gave
> Pojo to Guvnor.
>
> You can define enumerations for a particular attribute.
> Inside a DSL you can constrain a placeholder with that enumeration.
> And finally, enums can be static, or dynamic (a interface to implement
> that returns a list of values).
>
> search the Guvnor's doc in these chapters
> 1.4.2.4.8. Data enumerations (drop down list configurations)
>
> _______________________________________________
> rules-users mailing list
> [hidden
email]<http://user/SendEmail.jtp?type=node&node=2604255&i=0&by-user=t>
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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4:35 p.m.
Really thank you for your help, i am new to Guvnor and the syntax is not
so obvious when we do something less usual.
I will try that tomorrow
Le 1/03/2011 23:28, Esteban [via Drools - Java Rules Engine] a écrit :
You need to create the DSL first.
Follow these steps:
1.- Add java.util.Map to package imports (I think you already did this)
2.- Create a new Enumeration with the following content:
*'Map.properties': ['prop1', 'prop2', 'prop3']*
3.- Create a new DSL with this content:
*[when]The property {key:ENUM:Map.properties} of the map is
{value}=Map((this["{key}"] == "{value}"))*
4.- Create a new Rule and add the DSL sentence to the WHEN part. You
should see the drop down.
Note the name of the enumeration and how the variable {key} is defined
in the DSL. I think you can also read the enumerations from a Java
Enum present on your model, but I'm not sure about it. Does anyone
know about this?
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com <http://www.plugtree.com>
- Blog @ http://ilesteban.wordpress.com
2011/3/1 ioda100 <[hidden email]
</user/SendEmail.jtp?type=node&node=2607065&i=0>>
Yes but for this i will be obliged to create a POJO of an object.
And for attributes of that object in DSL i can define values that
can take this attribute?
Maybe i don't understand but i don't see how to do with this.
My case :
I have Maps in the session. Each Map has for example 5 properties
("prop1", "prop2", "prop3", "prop4",
"prop51") and the value is a
string. The Map is Map<String, Object> but generally Object is a
String.
So in the When clause i have something like that :
$m : Map((this["prop1"] == "test1"))
I have included java.utils.Map in Guvnor. So when i add a when
clause i can choose Map in the list but impossible to have "prop1"
to "prop5" in a drop down list for attributes of the Map.
Would it be possible to create a Pojo for Map or would it be in
conflict with the Map of Java?
Thank you for your time
Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules
Engine] a écrit :
> Le 01/03/2011 15:39, ioda100 a écrit :
>> Thanks for your quick answer Esteban.
>>
>> 1) Ok i will have a look at DSL. In fact in my map i know all
>> the properties (about 200). It would be cool to be able to have
>> a drop down list with all these attributes as when we do it with
>> objects for which we gave Pojo to Guvnor.
> You can define enumerations for a particular attribute.
> Inside a DSL you can constrain a placeholder with that enumeration.
> And finally, enums can be static, or dynamic (a interface to
> implement that returns a list of values).
>
> search the Guvnor's doc in these chapters
>
>
> 1.4.2.4.8. Data enumerations (drop down list
> configurations)
>
>
>
> _______________________________________________
> rules-users mailing list
> [hidden email]
>
<http://user/SendEmail.jtp?type=node&node=2604255&i=0&by-user=...
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
> ------------------------------------------------------------------------
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7:06 a.m.
Really thank you, it's working fine. I will see if it's working for my more
difficult case.
On Tue, Mar 1, 2011 at 11:28 PM, Esteban [via Drools - Java Rules Engine] <
ml-node+2607065-1249571055-237284(a)n3.nabble.com> wrote:
You need to create the DSL first.
Follow these steps:
1.- Add java.util.Map to package imports (I think you already did this)
2.- Create a new Enumeration with the following content:
*'Map.properties': ['prop1', 'prop2', 'prop3']*
3.- Create a new DSL with this content:
*[when]The property {key:ENUM:Map.properties} of the map is
{value}=Map((this["{key}"] == "{value}"))*
4.- Create a new Rule and add the DSL sentence to the WHEN part. You should
see the drop down.
Note the name of the enumeration and how the variable {key} is defined in
the DSL. I think you can also read the enumerations from a Java Enum present
on your model, but I'm not sure about it. Does anyone know about this?
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/1 ioda100 <[hidden
email]<http://user/SendEmail.jtp?type=node&node=2607065&i=0>
>
> Yes but for this i will be obliged to create a POJO of an object. And for
> attributes of that object in DSL i can define values that can take this
> attribute?
>
> Maybe i don't understand but i don't see how to do with this.
>
> My case :
> I have Maps in the session. Each Map has for example 5 properties
> ("prop1", "prop2", "prop3", "prop4",
"prop51") and the value is a string.
> The Map is Map<String, Object> but generally Object is a String.
> So in the When clause i have something like that :
> $m : Map((this["prop1"] == "test1"))
> I have included java.utils.Map in Guvnor. So when i add a when clause i
> can choose Map in the list but impossible to have "prop1" to
"prop5" in a
> drop down list for attributes of the Map.
> Would it be possible to create a Pojo for Map or would it be in conflict
> with the Map of Java?
>
> Thank you for your time
>
>
> Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules Engine] a
> écrit :
>
> Le 01/03/2011 15:39, ioda100 a écrit :
>
> Thanks for your quick answer Esteban.
>
> 1) Ok i will have a look at DSL. In fact in my map i know all the
> properties (about 200). It would be cool to be able to have a drop down list
> with all these attributes as when we do it with objects for which we gave
> Pojo to Guvnor.
>
> You can define enumerations for a particular attribute.
> Inside a DSL you can constrain a placeholder with that enumeration.
> And finally, enums can be static, or dynamic (a interface to implement
> that returns a list of values).
>
> search the Guvnor's doc in these chapters
> 1.4.2.4.8. Data enumerations (drop down list configurations)
>
> _______________________________________________
> rules-users mailing list
> [hidden
email]<http://user/SendEmail.jtp?type=node&node=2604255&i=0&by-user=t>
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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8:53 a.m.
New subject: PackageBuilderConfiguration
HI,
Has anyone seen this before on Drools 5:
java.lang.NoSuchMethodError:
org/drools/compiler/PackageBuilderConfiguration.<init>(Ljava/util/Properties;)V
any insight?
saleem
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of ioda100
Sent: Wednesday, March 02, 2011 8:06 AM
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] Guvnor and drools implementation - questions
Really thank you, it's working fine. I will see if it's working for my more
difficult case.
On Tue, Mar 1, 2011 at 11:28 PM, Esteban [via Drools - Java Rules Engine] <[hidden
email]> wrote:
You need to create the DSL first.
Follow these steps:
1.- Add java.util.Map to package imports (I think you already did this)
2.- Create a new Enumeration with the following content:
'Map.properties': ['prop1', 'prop2', 'prop3']
3.- Create a new DSL with this content:
[when]The property {key:ENUM:Map.properties} of the map is
{value}=Map((this["{key}"] == "{value}"))
4.- Create a new Rule and add the DSL sentence to the WHEN part. You should see the drop
down.
Note the name of the enumeration and how the variable {key} is defined in the DSL. I think
you can also read the enumerations from a Java Enum present on your model, but I'm not
sure about it. Does anyone know about this?
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/1 ioda100 <[hidden email]
<http://user/SendEmail.jtp?type=node&node=2607065&i=0> >
Yes but for this i will be obliged to create a POJO of an object. And for attributes of
that object in DSL i can define values that can take this attribute?
Maybe i don't understand but i don't see how to do with this.
My case :
I have Maps in the session. Each Map has for example 5 properties ("prop1",
"prop2", "prop3", "prop4", "prop51") and the value
is a string. The Map is Map<String, Object> but generally Object is a String.
So in the When clause i have something like that :
$m : Map((this["prop1"] == "test1"))
I have included java.utils.Map in Guvnor. So when i add a when clause i can choose Map in
the list but impossible to have "prop1" to "prop5" in a drop down list
for attributes of the Map.
Would it be possible to create a Pojo for Map or would it be in conflict with the Map of
Java?
Thank you for your time
Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules Engine] a écrit :
Le 01/03/2011 15:39, ioda100 a écrit :
Thanks for your quick answer Esteban.
1) Ok i will have a look at DSL. In fact in my map i know all the properties (about 200).
It would be cool to be able to have a drop down list with all these attributes as when we
do it with objects for which we gave Pojo to Guvnor.
You can define enumerations for a particular attribute.
Inside a DSL you can constrain a placeholder with that enumeration.
And finally, enums can be static, or dynamic (a interface to implement that returns a
list of values).
search the Guvnor's doc in these chapters
1.4.2.4.8. Data enumerations (drop down list configurations)
_______________________________________________
rules-users mailing list
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<http://user/SendEmail.jtp?type=node&node=2604255&i=0&by-user=...
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9:49 a.m.
New subject: PackageBuilderConfiguration
Got it fixed. Thanks for looking.
saleem
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of Saleem Lakhani
Sent: Wednesday, March 02, 2011 9:53 AM
To: Rules Users List
Subject: [rules-users] PackageBuilderConfiguration
HI,
Has anyone seen this before on Drools 5:
java.lang.NoSuchMethodError:
org/drools/compiler/PackageBuilderConfiguration.<init>(Ljava/util/Properties;)V
any insight?
saleem
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of ioda100
Sent: Wednesday, March 02, 2011 8:06 AM
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] Guvnor and drools implementation - questions
Really thank you, it's working fine. I will see if it's working for my more
difficult case.
On Tue, Mar 1, 2011 at 11:28 PM, Esteban [via Drools - Java Rules Engine] <[hidden
email]> wrote:
You need to create the DSL first.
Follow these steps:
1.- Add java.util.Map to package imports (I think you already did this)
2.- Create a new Enumeration with the following content:
'Map.properties': ['prop1', 'prop2', 'prop3']
3.- Create a new DSL with this content:
[when]The property {key:ENUM:Map.properties} of the map is
{value}=Map((this["{key}"] == "{value}"))
4.- Create a new Rule and add the DSL sentence to the WHEN part. You should see the drop
down.
Note the name of the enumeration and how the variable {key} is defined in the DSL. I think
you can also read the enumerations from a Java Enum present on your model, but I'm not
sure about it. Does anyone know about this?
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/1 ioda100 <[hidden email]
<http://user/SendEmail.jtp?type=node&node=2607065&i=0> >
Yes but for this i will be obliged to create a POJO of an object. And for attributes of
that object in DSL i can define values that can take this attribute?
Maybe i don't understand but i don't see how to do with this.
My case :
I have Maps in the session. Each Map has for example 5 properties ("prop1",
"prop2", "prop3", "prop4", "prop51") and the value
is a string. The Map is Map<String, Object> but generally Object is a String.
So in the When clause i have something like that :
$m : Map((this["prop1"] == "test1"))
I have included java.utils.Map in Guvnor. So when i add a when clause i can choose Map in
the list but impossible to have "prop1" to "prop5" in a drop down list
for attributes of the Map.
Would it be possible to create a Pojo for Map or would it be in conflict with the Map of
Java?
Thank you for your time
Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules Engine] a écrit :
Le 01/03/2011 15:39, ioda100 a écrit :
Thanks for your quick answer Esteban.
1) Ok i will have a look at DSL. In fact in my map i know all the properties (about 200).
It would be cool to be able to have a drop down list with all these attributes as when we
do it with objects for which we gave Pojo to Guvnor.
You can define enumerations for a particular attribute.
Inside a DSL you can constrain a placeholder with that enumeration.
And finally, enums can be static, or dynamic (a interface to implement that returns a
list of values).
search the Guvnor's doc in these chapters
1.4.2.4.8. Data enumerations (drop down list configurations)
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10:56 a.m.
New subject: PackageBuilderConfiguration
Are you including drools-compiler in your application?
Best,
El mar 2, 2011 12:54 p.m., "Saleem Lakhani"
<Saleem.Lakhani(a)citizensfla.com>
escribió:
Got it fixed. Thanks for looking.
saleem
*From:* rules-users-bounces(a)lists.jboss.org [mailto:
rules-users-bounces(a)lists.jboss.org] *On Behalf Of *Saleem Lakhani
*Sent:* Wednesday, March 02, 2011 9:53 AM
*To:* Rules Users List
*Subject:* [rules-users] PackageBuilderConfiguration
HI,
Has anyone seen this before on Drools 5:
java.lang.NoSuchMethodError: org/drools/co...
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1:34 p.m.
New subject: PackageBuilderConfiguration
Yes I am. I was using the older version before.
saleem
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of Esteban Aliverti
Sent: Wednesday, March 02, 2011 11:57 AM
To: Rules Users List
Subject: Re: [rules-users] PackageBuilderConfiguration
Are you including drools-compiler in your application?
Best,
El mar 2, 2011 12:54 p.m., "Saleem Lakhani"
<Saleem.Lakhani(a)citizensfla.com> escribió:
Got it fixed. Thanks for looking.
saleem
From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of Saleem Lakhani
Sent: Wednesday, March 02, 2011 9:53 AM
To: Rules Users List
Subject: [rules-users] PackageBuilderConfiguration
HI,
Has anyone seen this before on Drools 5:
java.lang.NoSuchMethodError: org/drools/co...
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3:34 a.m.
I don't think that enums needs to be linked to a Pojo attribute. To me
it is just an identifier used in ENUM DSL constraints. The 'properties'
is not an attribute of a Map. I think you could set it to whatever you
like (something more linked to your problem).
For making that dynamic, it is explained in the guvnor doc
<http://drools.herod.net/drools-guvnor/html_single/index.html> (chapter
"1.4.2.4.8. Data enumerations (drop down list configurations)" )
'Person.age' : (new com.yourco.DataHelper()).getListOfAges()
But I never tried that.
Le 02/03/2011 14:06, ioda100 a écrit :
Really thank you, it's working fine. I will see if it's
working for my
more difficult case.
On Tue, Mar 1, 2011 at 11:28 PM, Esteban [via Drools - Java Rules
Engine] <[hidden email]
</user/SendEmail.jtp?type=node&node=2613230&i=0&by-user=t>> wrote:
You need to create the DSL first.
Follow these steps:
1.- Add java.util.Map to package imports (I think you already did
this)
2.- Create a new Enumeration with the following content:
*'Map.properties': ['prop1', 'prop2', 'prop3']*
3.- Create a new DSL with this content:
*[when]The property {key:ENUM:Map.properties} of the map is
{value}=Map((this["{key}"] == "{value}"))*
4.- Create a new Rule and add the DSL sentence to the WHEN part.
You should see the drop down.
Note the name of the enumeration and how the variable {key} is
defined in the DSL. I think you can also read the enumerations
from a Java Enum present on your model, but I'm not sure about it.
Does anyone know about this?
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com <http://www.plugtree.com>
- Blog @ http://ilesteban.wordpress.com
2011/3/1 ioda100 <[hidden email]
<http://user/SendEmail.jtp?type=node&node=2607065&i=0>>
Yes but for this i will be obliged to create a POJO of an
object. And for attributes of that object in DSL i can define
values that can take this attribute?
Maybe i don't understand but i don't see how to do with this.
My case :
I have Maps in the session. Each Map has for example 5
properties ("prop1", "prop2", "prop3",
"prop4", "prop51") and
the value is a string. The Map is Map<String, Object> but
generally Object is a String.
So in the When clause i have something like that :
$m : Map((this["prop1"] == "test1"))
I have included java.utils.Map in Guvnor. So when i add a when
clause i can choose Map in the list but impossible to have
"prop1" to "prop5" in a drop down list for attributes of the
Map.
Would it be possible to create a Pojo for Map or would it be
in conflict with the Map of Java?
Thank you for your time
Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules
Engine] a écrit :
> Le 01/03/2011 15:39, ioda100 a écrit :
>> Thanks for your quick answer Esteban.
>>
>> 1) Ok i will have a look at DSL. In fact in my map i know
>> all the properties (about 200). It would be cool to be able
>> to have a drop down list with all these attributes as when
>> we do it with objects for which we gave Pojo to Guvnor.
> You can define enumerations for a particular attribute.
> Inside a DSL you can constrain a placeholder with that
> enumeration.
> And finally, enums can be static, or dynamic (a interface to
> implement that returns a list of values).
>
> search the Guvnor's doc in these chapters
>
>
> 1.4.2.4.8. Data enumerations (drop down list
> configurations)
>
>
>
> _______________________________________________
> rules-users mailing list
> [hidden email]
>
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>
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EURODECISION
9A rue de la Porte de Buc 78000 VERSAILLES
Tél. : +33 (0)1 39 07 12 40
Direct : +33 (0)1 39 07 26 16
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EURODECISION <http://www.eurodecision.com/><http://www.eurodecision.com/>
6:32 a.m.
"Maps.properties" is just a name I choose for the enumeration. You can use
whatever identifier you want, but..... The identifier has to be of the form
<string>.<string>. It has to have a dot (.). I think this is because
enumeration were created for bind a fact type attribute to a list of values.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/3 Vincent Legendre <vincent.legendre(a)eurodecision.com>
I don't think that enums needs to be linked to a Pojo attribute.
To me it
is just an identifier used in ENUM DSL constraints. The 'properties' is not
an attribute of a Map. I think you could set it to whatever you like
(something more linked to your problem).
For making that dynamic, it is explained in the guvnor
doc<http://drools.herod.net/drools-guvnor/html_single/index.html>(c...
"1.4.2.4.8. Data enumerations (drop down list configurations)" )
'Person.age' : (new com.yourco.DataHelper()).getListOfAges()
But I never tried that.
Le 02/03/2011 14:06, ioda100 a écrit :
Really thank you, it's working fine. I will see if it's working for my more
difficult case.
On Tue, Mar 1, 2011 at 11:28 PM, Esteban [via Drools - Java Rules Engine]
<[hidden
email]<http://user/SendEmail.jtp?type=node&node=2613230&i=0&by-user=t>
> wrote:
> You need to create the DSL first.
> Follow these steps:
> 1.- Add java.util.Map to package imports (I think you already did this)
> 2.- Create a new Enumeration with the following content:
> *'Map.properties': ['prop1', 'prop2', 'prop3']*
> 3.- Create a new DSL with this content:
> *[when]The property {key:ENUM:Map.properties} of the map is
> {value}=Map((this["{key}"] == "{value}"))*
> 4.- Create a new Rule and add the DSL sentence to the WHEN part. You
> should see the drop down.
>
> Note the name of the enumeration and how the variable {key} is defined in
> the DSL. I think you can also read the enumerations from a Java Enum present
> on your model, but I'm not sure about it. Does anyone know about this?
>
> Best Regards,
>
> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>
> Esteban Aliverti
> - Developer @ http://www.plugtree.com
> - Blog @ http://ilesteban.wordpress.com
>
>
> 2011/3/1 ioda100 <[hidden
email]<http://user/SendEmail.jtp?type=node&node=2607065&i=0>
> >
>
>> Yes but for this i will be obliged to create a POJO of an object. And for
>> attributes of that object in DSL i can define values that can take this
>> attribute?
>>
>> Maybe i don't understand but i don't see how to do with this.
>>
>> My case :
>> I have Maps in the session. Each Map has for example 5 properties
>> ("prop1", "prop2", "prop3", "prop4",
"prop51") and the value is a string.
>> The Map is Map<String, Object> but generally Object is a String.
>> So in the When clause i have something like that :
>> $m : Map((this["prop1"] == "test1"))
>> I have included java.utils.Map in Guvnor. So when i add a when clause i
>> can choose Map in the list but impossible to have "prop1" to
"prop5" in a
>> drop down list for attributes of the Map.
>> Would it be possible to create a Pojo for Map or would it be in conflict
>> with the Map of Java?
>>
>> Thank you for your time
>>
>>
>> Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules Engine] a
>> écrit :
>>
>> Le 01/03/2011 15:39, ioda100 a écrit :
>>
>> Thanks for your quick answer Esteban.
>>
>> 1) Ok i will have a look at DSL. In fact in my map i know all the
>> properties (about 200). It would be cool to be able to have a drop down list
>> with all these attributes as when we do it with objects for which we gave
>> Pojo to Guvnor.
>>
>> You can define enumerations for a particular attribute.
>> Inside a DSL you can constrain a placeholder with that enumeration.
>> And finally, enums can be static, or dynamic (a interface to implement
>> that returns a list of values).
>>
>> search the Guvnor's doc in these chapters
>> 1.4.2.4.8. Data enumerations (drop down list configurations)
>>
>> _______________________________________________
>> rules-users mailing list
>> [hidden
email]<http://user/SendEmail.jtp?type=node&node=2604255&i=0&by-user=t>
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>> ------------------------------
>> If you reply to this email, your message will be added to the
>> discussion below:
>>
>>
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>>
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>>
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>>
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EURODECISION
9A rue de la Porte de Buc 78000 VERSAILLES
Tél. : +33 (0)1 39 07 12 40
Direct : +33 (0)1 39 07 26 16
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10:26 a.m.
Yes thanks it's working with enum like explained previously by Esteban. I
won't do it dynamic for now i think.
It's not always of the form <string>.<string>, i have some in
<string>.<int>
or <string>.<long> but for these i can make a separate DSL that will cast
the string to int or long. Except if there is a better solution.
Another thing is that i will have for this DSL :
*[when]The property {key:ENUM:Map.properties} of the map is
{value}=Map((this["{key}"] == "{value}"))
The property 'prop1' of the map is 'val1'
But if i want to have a second rule : **"The property 'prop1' of the map is
'val1'" and the map is different of the first map found above. Let's say
i
have an attribute ID in the Maps, i could check that (ID1 != ID2)*. But with
DSL i am a little lost of how to do that. With DRL i did like this :
$m1 : Map(this["prop1"] == "val1")
$m2 : Map((this["prop1"] == "val1") && (this["id"]
!= $m1["id"]))
*
i could do
**[when]The property {key:ENUM:Map.properties} of the map is {value} = $m1 :
Map((this["{key}"] == "{value}"))
but it will always be stored in $m1 so if i do : **"The property 'prop1' of
the map is 'val1'*" twice, the second will override the value of $m1.
I have to put my rules in 4 drl files separate (i know which rules go in
which drl file), is the only way to create a different package for each drl
file i want? And to put the Enum and DSL part in Global if i have to use it
for the 4 files? If i want a precise name for my drl file, i have to give
this exact name to the package?
I tried to use the test scenario to test all that so i have created a simple
Test Scenario.
In the Given part, i have selected Map. Then keySet, i put prop1, prop2...
and for entrySet, i put test1, test2... and i have made a simple rules that
check that prop1 is equal to "test1" but when i run the scenario, i got :
[Error: unable to find constructor for: java.util.Map] [Near : {... new
java.util.Map( ....}] ^ [Line: 1, Column: 0] . Is there something special to
do to test with Map?
I tried to put some drools code in a function but it seems to not work. For
example :
WorkingMemory wm = drools.getWorkingMemory();
wm.setGlobal("resultValue", "OK");
It's not a problem since i use DSL for this but i suppose it's normal.
Sorry for all these problems, a little lost with all functionnality of this
tool and manual doesn't talk a lot about this.
thanks
On Thu, Mar 3, 2011 at 2:22 PM, Esteban [via Drools - Java Rules Engine] <
ml-node+2625046-28794131-237284(a)n3.nabble.com> wrote:
"Maps.properties" is just a name I choose for the
enumeration. You can use
whatever identifier you want, but..... The identifier has to be of the form
<string>.<string>. It has to have a dot (.). I think this is because
enumeration were created for bind a fact type attribute to a list of values.
Best Regards,
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/3 Vincent Legendre <[hidden
email]<http://user/SendEmail.jtp?type=node&node=2625046&i=0&by-user=t>
>
> I don't think that enums needs to be linked to a Pojo attribute. To me it
> is just an identifier used in ENUM DSL constraints. The 'properties' is not
> an attribute of a Map. I think you could set it to whatever you like
> (something more linked to your problem).
>
> For making that dynamic, it is explained in the guvnor
doc<http://drools.herod.net/drools-guvnor/html_single/index.html>(c...
"1.4.2.4.8. Data enumerations (drop down list configurations)" )
>
> 'Person.age' : (new com.yourco.DataHelper()).getListOfAges()
>
>
> But I never tried that.
>
>
> Le 02/03/2011 14:06, ioda100 a écrit :
>
> Really thank you, it's working fine. I will see if it's working for my
> more difficult case.
>
>
> On Tue, Mar 1, 2011 at 11:28 PM, Esteban [via Drools - Java Rules Engine]
> <[hidden
email]<http://user/SendEmail.jtp?type=node&node=2613230&i=0&by-user=t>
> > wrote:
>
>> You need to create the DSL first.
>> Follow these steps:
>> 1.- Add java.util.Map to package imports (I think you already did this)
>> 2.- Create a new Enumeration with the following content:
>> *'Map.properties': ['prop1', 'prop2', 'prop3']*
>> 3.- Create a new DSL with this content:
>> *[when]The property {key:ENUM:Map.properties} of the map is
>> {value}=Map((this["{key}"] == "{value}"))*
>> 4.- Create a new Rule and add the DSL sentence to the WHEN part. You
>> should see the drop down.
>>
>> Note the name of the enumeration and how the variable {key} is defined in
>> the DSL. I think you can also read the enumerations from a Java Enum present
>> on your model, but I'm not sure about it. Does anyone know about this?
>>
>> Best Regards,
>>
>> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>>
>> Esteban Aliverti
>> - Developer @ http://www.plugtree.com
>> - Blog @ http://ilesteban.wordpress.com
>>
>>
>> 2011/3/1 ioda100 <[hidden
email]<http://user/SendEmail.jtp?type=node&node=2607065&i=0>
>> >
>>
>>> Yes but for this i will be obliged to create a POJO of an object. And
>>> for attributes of that object in DSL i can define values that can take this
>>> attribute?
>>>
>>> Maybe i don't understand but i don't see how to do with this.
>>>
>>> My case :
>>> I have Maps in the session. Each Map has for example 5 properties
>>> ("prop1", "prop2", "prop3", "prop4",
"prop51") and the value is a string.
>>> The Map is Map<String, Object> but generally Object is a String.
>>> So in the When clause i have something like that :
>>> $m : Map((this["prop1"] == "test1"))
>>> I have included java.utils.Map in Guvnor. So when i add a when clause i
>>> can choose Map in the list but impossible to have "prop1" to
"prop5" in a
>>> drop down list for attributes of the Map.
>>> Would it be possible to create a Pojo for Map or would it be in conflict
>>> with the Map of Java?
>>>
>>> Thank you for your time
>>>
>>>
>>> Le 1/03/2011 17:55, Vincent Legendre [via Drools - Java Rules Engine] a
>>> écrit :
>>>
>>> Le 01/03/2011 15:39, ioda100 a écrit :
>>>
>>> Thanks for your quick answer Esteban.
>>>
>>> 1) Ok i will have a look at DSL. In fact in my map i know all the
>>> properties (about 200). It would be cool to be able to have a drop down list
>>> with all these attributes as when we do it with objects for which we gave
>>> Pojo to Guvnor.
>>>
>>> You can define enumerations for a particular attribute.
>>> Inside a DSL you can constrain a placeholder with that enumeration.
>>> And finally, enums can be static, or dynamic (a interface to implement
>>> that returns a list of values).
>>>
>>> search the Guvnor's doc in these chapters
>>> 1.4.2.4.8. Data enumerations (drop down list configurations)
>>>
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4:50 a.m.
For your problem of different instances of a map : If you want to match
2 maps, and compare them, your have to set a placeholder in your DSL to
set the variable's name
[when]The property {key:ENUM:Map.properties} of the map *{mapVar}* is
{value}=*{mapVar} *: Map((this["{key}"] == "{value}"))
**And another DSL phrase to check that instances are different
[when]The map *{mapVar1}* is not map *{mapVar2}*=*eval ({mapVar1}*["id"]
!= *{mapVar2}*["id"]))*
*
But it will force your users to handle variables. I can't see simpler
way for doing that with DSL.
You may consider completely another way. If your property lists are
constant (and they are because you can create static enums), you can
write a simple program to generate the corresponding POJOs (which
contains the map inside them and use it in set/get methods for
corresponding key) and create a jar with them.
Each POJO will then have its fields listed automatically in Guided
Editor, which will prevent you for writing complex DSL and enums, and
provide a good way for users to edit rules. For instance, you can bind
an object to a variable only if you need it (with DSL you are forced to
bind a variable at each time you use the phrase), and you can use other
operator (not only equals) without writing a new DSL phrase.
I did not understand this question :
I have to put my rules in 4 drl files separate (i know which rules go
in which drl file), is the only way to create a different package for
each drl file i want? And to put the Enum and DSL part in Global if i
have to use it for the 4 files? If i want a precise name for my drl
file, i have to give this exact name to the package?
But yes, a DSL (and enums) is
specific to its package.
8:43 a.m.
Thank you for your answer.
Yes it's what i have done as i didn't find a better idea. User will have
to enter it but if the DSL is clear shouldn't be a problem.
In fact 1 rule will be something like :
- Find a map with properties 'prop1' = "value1" and store it in variable
$m1 (because i will need access in the Then part also)
- Find a map with properties 'prop1' = "value1" (and different then $m1)
and store it in variable $m2.
- And using properties 'unixTimestampInSecond' and
'unixTimestampInMillisecond' (so complete timestamp in Millisecond =
'unixTimestampInSecond' * 1000 + 'unixTimestampInMillisecond') of the 2
Maps, $m1 has to be before $m2.
So i use 2 times this one to find $m1 and $m2 : [when]The property
{key:ENUM:Map.properties} of the map *{mapVar}* is {value}=*{mapVar} *:
Map((this["{key}"] == "{value}"))
Then this one to drop the case when the Map would be the same :
[when]The map *{mapVar1}* is not map *{mapVar2}*=*eval ({mapVar1}*["id"]
!= *{mapVar2}*["id"]))*
*
Then i can do something like : [when]The map *{mapVar1}* is before
*{mapVar2}*=*eval (orderTimeStamp(*(Long)
*{mapVar1}*["unixTimestampInSecond"], (Long)
*{mapVar1}*["unixTimestampInMillisecond"], (Long) *{mapVar2}*["
unixTimestampInSecond"], (Long)
*{mapVar2}*["unixTimestampInMillisecond"]))*
*
where i would have a function *:
function Boolean orderTimeStamp(Long a, Long b, Long c, Long d)*
{
Long timestamp1 = a*1000+b;
Long timestamp2 = c*1000+d;
if (timestamp1 <= timestamp2)
return true;
else
return false;
}
I will rethink of POJO but i think, it will be more ennoying to update
any change. I will need a reference to these maps in almost every case
in the THEN clause so not a big problem finally.
For the second question :
In fact i have to make rules using these Enum and DSL and put rules in
their specific files.
For example now i am working with 4 different drl files :
- file1.drl which contains rule1, rule2, rule3, rule4
- file2.drl which contains rule5, rule6, rule7, rule8
- file3.drl which contains rule9, rule10, rule11, rule12
- file4.drl which contains rule13, rule14, rule15, rule16
These files have to have this specific name and the name cannot change
because the java code use this name to load the drl file in the session.
To put each rule in its specific file, do i have to create a package per
file and name the package with the name of the file i want? And copy
Enum and DSL in each package or can i put this in global? Or maybe be is
there a better way i didn't find?
To use the Test Scenario, do you know if we have to do special things? I
tried to add Maps in the Given part and run the scenario but i get an
error ; "unable to find constructor for java.util.Map" and the same if i
put a boolean, string... Is the Guvnor Test Scenario not able to find
java class and how to make it reachable?
I have already tried Test Scenario with adding object for which i gave a
Pojo but never with basic java type.
Thanks again
Le 4/03/2011 11:50, Vincent Legendre a écrit :
For your problem of different instances of a map : If you want to
match 2 maps, and compare them, your have to set a placeholder in your
DSL to set the variable's name
[when]The property {key:ENUM:Map.properties} of the map *{mapVar}* is
{value}=*{mapVar} *: Map((this["{key}"] == "{value}"))
**And another DSL phrase to check that instances are different
[when]The map *{mapVar1}* is not map *{mapVar2}*=*eval
({mapVar1}*["id"] != *{mapVar2}*["id"]))*
*
But it will force your users to handle variables. I can't see simpler
way for doing that with DSL.
You may consider completely another way. If your property lists are
constant (and they are because you can create static enums), you can
write a simple program to generate the corresponding POJOs (which
contains the map inside them and use it in set/get methods for
corresponding key) and create a jar with them.
Each POJO will then have its fields listed automatically in Guided
Editor, which will prevent you for writing complex DSL and enums, and
provide a good way for users to edit rules. For instance, you can bind
an object to a variable only if you need it (with DSL you are forced
to bind a variable at each time you use the phrase), and you can use
other operator (not only equals) without writing a new DSL phrase.
I did not understand this question :
> I have to put my rules in 4 drl files separate (i know which rules go
> in which drl file), is the only way to create a different package for
> each drl file i want? And to put the Enum and DSL part in Global if i
> have to use it for the 4 files? If i want a precise name for my drl
> file, i have to give this exact name to the package?
But yes, a DSL (and enums) is specific to its package.
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9:37 a.m.
I will rethink of POJO but i think, it will be more ennoying to
update
any change. I will need a reference to these maps in almost every case
in the THEN clause so not a big problem finally.
It's up to you. With a POJO
you can implement Comparable using your time
slots, and all other common behaviour that you will need later ... and
don't be forced to set a tricky DSL ... and have validation/compilation
telling you that you are using a non-existent field instead of getting
NPE at runtime ... but it's up to you :)
For the second question :
In fact i have to make rules using these Enum and DSL and put rules in
their specific files.
For example now i am working with 4 different drl files :
Files ?
According to your DSL questions, I guess that you are working with
Guvnor, so you are getting your file via the package URL for the
generated DRL file ?
You should create compiled package, because :
- rules are compiled so the KB loading is faster
- Guvnor (since 5.1) ca generate compiled package with only a subset
of the rules, filtering them by category and/or status (or by a custom
selection using rules :) ).
But if you can't,or don't want to create binaries, and still want to
store all rules inthe same package (to avoid duplicating DSL and enums),
may be you can
- assign your rules a 'ruleflow-group' and create a ruleflow that
branch on the suitable group.
- use 'agenda-group'.
- With no rule flow, you can add to all your rules a condition that
match a fact telling which group is executing
rule r1
when
Exec(task == "task1")
$m1 : ...
then
...
end
It depends on how you group your rules in files.
These files have to have this specific name and the name cannot
change
because the java code use this name to load the drl file in the session.
You can
also access compiled binary package by a snapshot name.
Or if you have one single set of rules, create a single KB and provide
methods that create new session ans add the specific control fact (not
sure of the exact syntax, just to show the idea) :
task1() {
session = getKb().newStatelessSession();
session.insert(new Exec("task1")
...
session.execute(...)
}
task2() {
session = getKb().newStatelessSession();
session.insert(new Exec("task2")
...
session.execute(...)
}
and you can obviously make that generic ...
To put each rule in its specific file, do i have to create a package
per file and name the package with the name of the file i want? And
copy Enum and DSL in each package or can i put this in global?
Don't know if
global can contains Enum and DSL. I think it can only
contain rules
To use the Test Scenario, do you know if we have to do special things?
I tried to add Maps in the Given part and run the scenario but i get
an error ; "unable to find constructor for java.util.Map" and the same
if i put a boolean, string... Is the Guvnor Test Scenario not able
to find java class and how to make it reachable?
I have already tried Test Scenario with adding object for which i gave
a Pojo but never with basic java type.
Don't known, sorry.
11:26 a.m.
You make me hesitating :-).
I just tried to make a pojo. But i will have to do a single Pojo called
"Map" with all the properties? Right now i had 4 Enum. Here i will have to
have all in the same POJO with name "Map".
The advantage i suppose is that with the Pojo, we can directly tell this
attribute is a String, this one is a Integer, this one a Double and this one
a Long and in the rules all will be done automatically without casting?
I can still assign $m1 for example to a Map found with "set variable name".
But in my example of 2 mails ago, to verify that it's not the same Map with
verifying $m1["id"]!=$m2["id"] i have to write it by hand with adding
a Map
and choose formula then adding "$m1["id"]!=$m2["id"]"? Same
for testing
timestamp of $m1 is before timestamp of $m2? Or is there a way to add it in
Pojo? I tried adding methods in the Pojo but i cannot call them.
I can have a look for taking the compiled package but this will mean change
a lot of code. I had to implement something that watch if the drl file was
change before creating the Knoledge base otherwise we keep the old knowledge
base. Because i do it in a multi threaded environement and it was crashing.
If i take th ecompiled one, can i easily split this in 4 compiled package
with each its rules? using Category?
The solution to do it with drl is a little too complicated.
Thanks again.
On Fri, Mar 4, 2011 at 4:42 PM, Vincent Legendre [via Drools - Java Rules
Engine] <ml-node+2634103-727164287-237284(a)n3.nabble.com> wrote:
<html> <head> </head> <body
text="#000000" bgcolor="#ffffff">
I will rethink of POJO but i think, it will be more ennoying to update any
change. I will need a reference to these maps in almost every case in the
THEN clause so not a big problem finally.
It's up to you. With a POJO you can implement Comparable using your time
slots, and all other common behaviour that you will need later ... and don't
be forced to set a tricky DSL ... and have validation/compilation telling
you that you are using a non-existent field instead of getting NPE at
runtime ... but it's up to you :)
For the second question :
In fact i have to make rules using these Enum and DSL and put rules in
their specific files.
For example now i am working with 4 different drl files :
Files ?
According to your DSL questions, I guess that you are working with Guvnor,
so you are getting your file via the package URL for the generated DRL file
?
You should create compiled package, because :
- rules are compiled so the KB loading is faster
- Guvnor (since 5.1) ca generate compiled package with only a subset of
the rules, filtering them by category and/or status (or by a custom
selection using rules :) ).
But if you can't,or don't want to create binaries, and still want to store
all rules inthe same package (to avoid duplicating DSL and enums), may be
you can
- assign your rules a 'ruleflow-group' and create a ruleflow that branch
on the suitable group.
- use 'agenda-group'.
- With no rule flow, you can add to all your rules a condition that
match a fact telling which group is executing
rule r1
when
Exec(task == "task1")
$m1 : ...
then
...
end
It depends on how you group your rules in files.
These files have to have this specific name and the name cannot change
because the java code use this name to load the drl file in the session.
You can also access compiled binary package by a snapshot name.
Or if you have one single set of rules, create a single KB and provide
methods that create new session ans add the specific control fact (not sure
of the exact syntax, just to show the idea) :
task1() {
session = getKb().newStatelessSession();
session.insert(new Exec("task1")
...
session.execute(...)
}
task2() {
session = getKb().newStatelessSession();
session.insert(new Exec("task2")
...
session.execute(...)
}
and you can obviously make that generic ...
To put each rule in its specific file, do i have to create a package per
file and name the package with the name of the file i want? And copy Enum
and DSL in each package or can i put this in global?
Don't know if global can contains Enum and DSL. I think it can only contain
rules
To use the Test Scenario, do you know if we have to do special things? I
tried to add Maps in the Given part and run the scenario but i get an error
; "unable to find constructor for java.util.Map" and the same if i put a
boolean, string... Is the Guvnor Test Scenario not able to find java class
and how to make it reachable?
I have already tried Test Scenario with adding object for which i gave a
Pojo but never with basic java type.
Don't known, sorry.
</body> </html>
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12:35 p.m.
I just tried to make a pojo. But i will have to do a single Pojo
called "Map" with all the properties? Right now i had 4 Enum. Here i
will have to have all in the same POJO with name "Map".
No. Don't
name the Pojo "Map" ... And create as much Pojo that you have
different enums. Make them extend a common class where are defined
common behaviour.
To make that clear once for all, see this code :
public class MapPojo extends HashMap<String, Object> {
public Object getId() {
return this.get("id");
}
@Override
public boolean equals(Object o) {
return (o instanceof MapPojo)
&& ((MapPojo)o).getId().equals(getId());
}
public Date getTimeStamp() {
return (Date) this.get("timeStamp");
}
public boolean isBefore(MapPojo other) {
return this.getTimeStamp().before(other.getTimeStamp());
}
}
// for enum 1
public class MapPojoGroup1 extends MapPojo {
public String getAtt1() {
return (String)this.get("att1");
}
public void setAtt1(String val) {
this.put("att1",val);
}
public Long getAtt2() {
return (Long)this.get("att2");
}
public void setAtt2(Long val) {
this.put("att2",val);
}
}
... etc etc etc for other enums
Easy to generate isn't it ?
The advantage i suppose is that with the Pojo, we can directly tell
this attribute is a String, this one is a Integer, this one a Double
and this one a Long and in the rules all will be done automatically
without casting?
Yep. And Guided editor will work "out of the box",
providing the
suitable list of fields, and suitable operators according to the field
type.
And if subsequent Pojo generation remove a field, compilation will warn you.
For the files, please tell how you cut them. Can you set a category ? If
yes, you can also set a first condition. How many rules do you (plan to)
have ?
And yes, you can compile only rules that match a given category. But you
will have to store it in a snapshot just after that. Please refer to the
doc for this point.
8:09 a.m.
Thanks for your help Vincent.
To be sure i have understood all well.
I've just created 2 class like you show me with some changes to fit and test
all (timestamp are long in fact, i have put int, double and string as well)
:
First class :
import java.util.HashMap;
public class MapPojo extends HashMap<String, Object> {
public Object getId() {
return this.get("id");
}
@Override
public boolean equals(Object o) {
return (o instanceof MapPojo) &&
((MapPojo)o).getId().equals(getId());
}
public long getTimeStamp() {
return (Long) this.get("timeStamp");
}
public boolean isBefore(MapPojo other) {
if (this.getTimeStamp() < other.getTimeStamp())
return true;
else
return false;
}
}
Second class :
public class MapTest1 extends MapPojo {
private String Att1String;
private String id;
private double Att2Double;
private int Att3Int;
private long timeStamp;
public String getId() {
return (String)this.get("id");
}
public void setId(String val) {
this.put("id",val);
}
public String getAtt1String() {
return (String)this.get("Att1String");
}
public void setAtt1String(String val) {
this.put("Att1String",val);
}
public double getAtt2Double() {
return (Double)this.get("Att2Double");
}
public void setAtt2Double(double val) {
this.put("Att2Double",val);
}
public int getAtt3Int() {
return Integer.parseInt((String)this.get("Att3Int"));
}
public void setAtt3Int(int val) {
this.put("Att3Int",val);
}
public long getTimeStamp() {
return (Long)this.get("timeStamp");
}
public void setTimeStamp(Long val) {
this.put("timeStamp",val);
}
}
Then i have imported this in Guvnor.
I have made 2 categories. I have put the model (jar) in the 2 categories. I
have created 2 simple rules playing with the attributes id, timestamp...
Then i get some code like this (when i clic on view code or get the drl
file) : 1.|rule "Rule1InCat1" 2.| dialect "mvel" 3.| when 4.|
$m1
: MapTest1( att1String == "value1" ) 5.| $m2 : MapTest1( att1String
== "value1" ) 6.| MapTest1( att2Double == 3.5 )7. | then8.|
MapTest1
fact0 = new MapTest1();9.| fact0.setId( "id4" );10.|
insert(fact0
); 11.|end
1) For the condition Map $m1 different then Map $m2. I suppose i have to use
the function define in MapPojo? I have to write it by hand using "free from
drl" : eval($m1 != $m2) ? or is there a better way?
The same for testing that $m1 timestamp (Long) is befor $m2. I have to write
it by hand : eval($m1.isBefore($m2))? So they have to know it exist a method
isBefore if not said by the gui?
2) In the code It's written MapTest1(..) instead of Map(...) so i suppose
drools has to do it with the precompiled package .pkg to know about the
MapPojo and MapTest1.. If i take only the .drl, drools won't know about
class MapTest1.
I think it could be for the biggest file about 100+ rules. And the smallest
about 2-3 only.
I can have : MapTest1, MapTest2, MapTest3, MapTest4 for example with each
their own attributes. And For now if i have 4 drl files (file1.drl go for
MapTest1 objects, file2.drl go for MapTest2 objects...) with their own
rules, i know when to use which file.
Yes i can set a category to each of my rule. Do you mean create 4 categories
(cat1, cat2, cat3, cat4) and for rules of file1.drl, put them it cat1, for
file2.drl, put them in cat2... ? Set a first condition in the rules? Am i
obliged to create a package per file and filter by category or is it
possible to make a package with all and filtering when creating the
knowledgeBase or something like that?
Thanks again for your precious help.
On Fri, Mar 4, 2011 at 7:35 PM, Vincent Legendre <
vincent.legendre(a)eurodecision.com> wrote:
> I just tried to make a pojo. But i will have to do a single Pojo
> called "Map" with all the properties? Right now i had 4 Enum. Here i
> will have to have all in the same POJO with name "Map".
No. Don't name the Pojo "Map" ... And create as much Pojo that you have
different enums. Make them extend a common class where are defined
common behaviour.
To make that clear once for all, see this code :
public class MapPojo extends HashMap<String, Object> {
public Object getId() {
return this.get("id");
}
@Override
public boolean equals(Object o) {
return (o instanceof MapPojo)
&& ((MapPojo)o).getId().equals(getId());
}
public Date getTimeStamp() {
return (Date) this.get("timeStamp");
}
public boolean isBefore(MapPojo other) {
return this.getTimeStamp().before(other.getTimeStamp());
}
}
// for enum 1
public class MapPojoGroup1 extends MapPojo {
public String getAtt1() {
return (String)this.get("att1");
}
public void setAtt1(String val) {
this.put("att1",val);
}
public Long getAtt2() {
return (Long)this.get("att2");
}
public void setAtt2(Long val) {
this.put("att2",val);
}
}
... etc etc etc for other enums
Easy to generate isn't it ?
>
> The advantage i suppose is that with the Pojo, we can directly tell
> this attribute is a String, this one is a Integer, this one a Double
> and this one a Long and in the rules all will be done automatically
> without casting?
Yep. And Guided editor will work "out of the box", providing the
suitable list of fields, and suitable operators according to the field
type.
And if subsequent Pojo generation remove a field, compilation will warn
you.
For the files, please tell how you cut them. Can you set a category ? If
yes, you can also set a first condition. How many rules do you (plan to)
have ?
And yes, you can compile only rules that match a given category. But you
will have to store it in a snapshot just after that. Please refer to the
doc for this point.
_______________________________________________
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rules-users(a)lists.jboss.org
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12:38 p.m.
I've just created 2 class like you show me with some changes to
fit
and test all (timestamp are long in fact, i have put int, double and
string as well)
In the second class you don't need the attributes as members,
because
Drools uses get / set methods to deduce them, and anyway you never use
them as they are stored in the map.
Then i have imported this in Guvnor.
I have made 2 categories. I have put the model (jar) in the 2 categories.
That is
non-sense. Jars are not linked to a category but to a package.
I have created 2 simple rules playing with the attributes id,
timestamp...
With Guided editor ?
1) For the condition Map $m1 different then Map $m2. I suppose i have
to use the function define in MapPojo? I have to write it by hand
using "free from drl" : eval($m1 != $m2) ? or is there a better way?
Its a way.
You can also test the id directly in conditions (in Guided editor, bind
the id of the first instance to a var, then compare it in the second
condition.
The same for testing that $m1 timestamp (Long) is befor $m2. I have to
write it by hand : eval($m1.isBefore($m2))? So they have to know it
exist a method isBefore if not said by the gui?
Same. Add the test directly in the condition.
Another solution is to use a custom operator (search this mailing list
for samples).
2) In the code It's written MapTest1(..) instead of Map(...) so i
suppose drools has to do it with the precompiled package .pkg to know
about the MapPojo and MapTest1.. If i take only the .drl, drools won't
know about class MapTest1.
It is MapTest1, because this is the class used .... and drools knows it
because it uses it ... You don't use Map directly anymore
Yes i can set a category to each of my rule.
Yes you can !
Do you mean create 4 categories (cat1, cat2, cat3, cat4) and for
rules
of file1.drl, put them it cat1, for file2.drl, put them in cat2... ?
Yes
Set a first condition in the rules?
Choose between categories
and first condition. Don't use both
Am i obliged to create a package per file and filter by category or
is
it possible to make a package with all and filtering when creating the
knowledgeBase or something like that?
You certainly can filter your KB afterwards,
but this is not really an
out-of-the-box function. To me you have two options. For both options,
you have only one Guvnor package :*
First option* : categories
set categories for your rules as you said
compile by filtering one category, do a snapshot. Redo the same for
other categories (in other snapshots).
Use these 4 snapshots in your code
*Second option *: First filtering condition
create a new POJO having only one field to handle the task asked (or
category or group or file or whatever you call that) add a condition to
all your rules testing this fact according to their group (as described
in one of my previous mail)
create a single package (or use DRL) for all your rules.
when calling your rules, insert the suitable POJO according to tehexec
you want.
The second is my favorite because it is less work to deploy, and your
number of rules are quite small. The second option can be change to use
a RuleFlow instead of a control fact.
9:56 a.m.
Hi Vincent,
Thanks for precisions.
Didn't knew only set/get are used. Get to be careful when i will have 100+
attributes :-)
Yes i created rueles with guided editor and it's working with my attribute.
is there a way to remove "empty", "entrySet", "keySet",
"clone",... herited
from Map. So i would have only the attribute i have defined?
Ok i will do like this for testing eval($m1 != $m2) ... i have put this in
separate line to meke it clearer at the beginning.
I think i will do your first option, rules will be clearer.
i have always used drl file instead of package. If i deploy a file.pkg, is
there a way to know what's in it? If i deploy something, i just want to be
able later to very that all is well what i think if i have a doubt (easy
with drl file).
When i try to create my session i have problem with pkg. For know with .drl
file i do with that :
KnowledgeBase knowledgeBase = createKnowledgeBase();
StatefulKnowledgeSession session =
knowledgeBase.newStatefulKnowledgeSession();
private static KnowledgeBase createKnowledgeBase() {
final KnowledgeBuilder builder =
KnowledgeBuilderFactory.newKnowledgeBuilder ();
builder.add(ResourceFactory.newUrlResource("file:///d://basicRule.drl"),
ResourceType.DRL);
if (builder.hasErrors()) {
throw new RuntimeException(builder.getErrors()
.toString());
}
KnowledgeBase knowledgeBase =
KnowledgeBaseFactory.newKnowledgeBase();
knowledgeBase.addKnowledgePackages(builder.getKnowledgePackages());
return knowledgeBase;
}
If i replace the line :
builder.add(ResourceFactory.newUrlResource("file:///d://basicRule.drl"),
ResourceType.DRL);
by :
builder.add(ResourceFactory.newUrlResource("file:///d://PackageTest1.pkg"),
ResourceType.PKG);
but it's crashing :
xception in thread "main" org.drools.RuntimeDroolsException: Unable to load
dialect
'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java:org.drools.rule.builder.dialect.java.JavaDialectConfiguration'
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:283)
at
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:268)
at
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:181)
at
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:154)
at
org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilderConfiguration(KnowledgeBuilderFactoryServiceImpl.java:26)
at
org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(KnowledgeBuilderFactory.java:86)
at TestMapPojoPackage.createKnowledgeBase(TestMapPojoPackage.java:86)
at TestMapPojoPackage.main(TestMapPojoPackage.java:58)
Caused by: java.lang.RuntimeException: The Janino jar is not in the
classpath
at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:100)
at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:55)
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:279)
... 7 more
Is it something special to do?
Thanks again for your time
On Mon, Mar 7, 2011 at 7:44 PM, Vincent Legendre [via Drools - Java Rules
Engine] <ml-node+2647352-436278430-237284(a)n3.nabble.com> wrote:
<html> <head> </head> <body
text="#000000" bgcolor="#ffffff">
I've just created 2 class like you show me with some changes to fit and
test all (timestamp are long in fact, i have put int, double and string as
well)
In the second class you don't need the attributes as members, because
Drools uses get / set methods to deduce them, and anyway you never use them
as they are stored in the map.
Then i have imported this in Guvnor.
I have made 2 categories. I have put the model (jar) in the 2 categories.
That is non-sense. Jars are not linked to a category but to a package.
I have created 2 simple rules playing with the attributes id, timestamp...
With Guided editor ?
1) For the condition Map $m1 different then Map $m2. I suppose i have to
use the function define in MapPojo? I have to write it by hand using "free
from drl" : eval($m1 != $m2) ? or is there a better way?
Its a way.
You can also test the id directly in conditions (in Guided editor, bind the
id of the first instance to a var, then compare it in the second condition.
The same for testing that $m1 timestamp (Long) is befor $m2. I have to
write it by hand : eval($m1.isBefore($m2))? So they have to know it exist a
method isBefore if not said by the gui?
Same. Add the test directly in the condition.
Another solution is to use a custom operator (search this mailing list for
samples).
2) In the code It's written MapTest1(..) instead of Map(...) so i
suppose drools has to do it with the precompiled package .pkg to know about
the MapPojo and MapTest1.. If i take only the .drl, drools won't know about
class MapTest1.
It is MapTest1, because this is the class used .... and drools knows it
because it uses it ... You don't use Map directly anymore
Yes i can set a category to each of my rule.
Yes you can !
Do you mean create 4 categories (cat1, cat2, cat3, cat4) and for rules of
file1.drl, put them it cat1, for file2.drl, put them in cat2... ?
Yes
Set a first condition in the rules?
Choose between categories and first condition. Don't use both
Am i obliged to create a package per file and filter by category or is it
possible to make a package with all and filtering when creating the
knowledgeBase or something like that?
You certainly can filter your KB afterwards, but this is not really an
out-of-the-box function. To me you have two options. For both options, you
have only one Guvnor package :*
First option* : categories
set categories for your rules as you said
compile by filtering one category, do a snapshot. Redo the same for other
categories (in other snapshots).
Use these 4 snapshots in your code
*Second option *: First filtering condition
create a new POJO having only one field to handle the task asked (or
category or group or file or whatever you call that) add a condition to all
your rules testing this fact according to their group (as described in one
of my previous mail)
create a single package (or use DRL) for all your rules.
when calling your rules, insert the suitable POJO according to tehexec you
want.
The second is my favorite because it is less work to deploy, and your
number of rules are quite small. The second option can be change to use a
RuleFlow instead of a control fact.
</body> </html>
_______________________________________________
rules-users mailing list
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email]<http://user/SendEmail.jtp?type=node&node=2647352&i=0&by-user=t>
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4:37 p.m.
Yes i created rueles with guided editor and it's working with my
attribute. is there a way to remove "empty", "entrySet",
"keySet",
"clone",... herited from Map. So i would have only the attribute i
have defined?
Don't make the POJO extends Map, but containing a map.
i have always used drl file instead of package. If i deploy a
file.pkg, is there a way to know what's in it? If i deploy something,
i just want to be able later to very that all is well what i think if
i have a doubt (easy with drl file).
try this (the only trick is to compact the
rules that comes from a
decision table into one main log line) :
public static void dumpKbContent(KnowledgeBase knowledgeBase) {
System.out.println("================ " + ruleSet + "
================");
// Dump content
for (KnowledgePackage p : knowledgeBase.getKnowledgePackages()) {
System.out.println("-o0o- Package " + p.getName() + "
-o0o-");
System.out.println("Processes : ");
for (Process flow : p.getProcesses()) {
System.out.println(" - " + flow.getName());
}
System.out.println("Rules : ");
String lastRuleName = "";
for (Rule rule : p.getRules()) {
String ruleName = extractMainTableName(rule.getName());
if (!ruleName.equals(lastRuleName)) {
System.out.println(" - " + ruleName);
lastRuleName = ruleName;
}
}
System.out.println("-o0o- End Package " + p.getName() + "
-o0o-");
}
System.out.println("================ END " + ruleSet + "
================");
}
private static String extractMainTableName(String ruleName) {
// tables
Pattern p = Pattern.compile("(.*)_[0-9]+");
Matcher m = p.matcher(ruleName);
if (m.matches()) {
return m.group(1) + " ... table";
} else {
return ruleName;
}
}
10:10 a.m.
Thanks your code works well (extract the name of all the rules and name
of the package). I suppose there is nothing we ca do with guvnor. May be
export all in guvnor so we have a 'snapshot' of guvnor when the package
was build and deployed or archive the package.
You mean put a Map as attribute in MapPojo Class (not extending anymore
HashMap) and in the subclass MapTest1, MapTest2... extending MapPojo put
set and get method to access attribute of this map?
Thanks for your help
Le 8/03/2011 23:37, Vincent Legendre a écrit :
> Yes i created rueles with guided editor and it's working with
my
> attribute. is there a way to remove "empty", "entrySet",
"keySet",
> "clone",... herited from Map. So i would have only the attribute i
> have defined?
Don't make the POJO extends Map, but containing a map.
> i have always used drl file instead of package. If i deploy a
> file.pkg, is there a way to know what's in it? If i deploy something,
> i just want to be able later to very that all is well what i think if
> i have a doubt (easy with drl file).
try this (the only trick is to compact the rules that comes from a
decision table into one main log line) :
public static void dumpKbContent(KnowledgeBase knowledgeBase) {
System.out.println("================ " + ruleSet + "
================");
// Dump content
for (KnowledgePackage p : knowledgeBase.getKnowledgePackages()) {
System.out.println("-o0o- Package " + p.getName() + "
-o0o-");
System.out.println("Processes : ");
for (Process flow : p.getProcesses()) {
System.out.println(" - " + flow.getName());
}
System.out.println("Rules : ");
String lastRuleName = "";
for (Rule rule : p.getRules()) {
String ruleName = extractMainTableName(rule.getName());
if (!ruleName.equals(lastRuleName)) {
System.out.println(" - " + ruleName);
lastRuleName = ruleName;
}
}
System.out.println("-o0o- End Package " + p.getName() + "
-o0o-");
}
System.out.println("================ END " + ruleSet + "
================");
}
private static String extractMainTableName(String ruleName) {
// tables
Pattern p = Pattern.compile("(.*)_[0-9]+");
Matcher m = p.matcher(ruleName);
if (m.matches()) {
return m.group(1) + " ... table";
} else {
return ruleName;
}
}
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https://lists.jboss.org/mailman/listinfo/rules-users
9:56 a.m.
it's working for pkg, bad library
On Tue, Mar 8, 2011 at 4:30 PM, Eddy Hautot <eddyhautot(a)gmail.com> wrote:
Hi Vincent,
Thanks for precisions.
Didn't knew only set/get are used. Get to be careful when i will have 100+
attributes :-)
Yes i created rueles with guided editor and it's working with my attribute.
is there a way to remove "empty", "entrySet", "keySet",
"clone",... herited
from Map. So i would have only the attribute i have defined?
Ok i will do like this for testing eval($m1 != $m2) ... i have put this in
separate line to meke it clearer at the beginning.
I think i will do your first option, rules will be clearer.
i have always used drl file instead of package. If i deploy a file.pkg, is
there a way to know what's in it? If i deploy something, i just want to be
able later to very that all is well what i think if i have a doubt (easy
with drl file).
When i try to create my session i have problem with pkg. For know with .drl
file i do with that :
KnowledgeBase knowledgeBase = createKnowledgeBase();
StatefulKnowledgeSession session =
knowledgeBase.newStatefulKnowledgeSession();
private static KnowledgeBase createKnowledgeBase() {
final KnowledgeBuilder builder =
KnowledgeBuilderFactory.newKnowledgeBuilder ();
builder.add(ResourceFactory.newUrlResource("file:///d://basicRule.drl"),
ResourceType.DRL);
if (builder.hasErrors()) {
throw new RuntimeException(builder.getErrors()
.toString());
}
KnowledgeBase knowledgeBase =
KnowledgeBaseFactory.newKnowledgeBase();
knowledgeBase.addKnowledgePackages(builder.getKnowledgePackages());
return knowledgeBase;
}
If i replace the line :
builder.add(ResourceFactory.newUrlResource("file:///d://basicRule.drl"),
ResourceType.DRL);
by :
builder.add(ResourceFactory.newUrlResource("file:///d://PackageTest1.pkg"),
ResourceType.PKG);
but it's crashing :
xception in thread "main" org.drools.RuntimeDroolsException: Unable to load
dialect
'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java:org.drools.rule.builder.dialect.java.JavaDialectConfiguration'
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:283)
at
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:268)
at
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:181)
at
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:154)
at
org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilderConfiguration(KnowledgeBuilderFactoryServiceImpl.java:26)
at
org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(KnowledgeBuilderFactory.java:86)
at TestMapPojoPackage.createKnowledgeBase(TestMapPojoPackage.java:86)
at TestMapPojoPackage.main(TestMapPojoPackage.java:58)
Caused by: java.lang.RuntimeException: The Janino jar is not in the
classpath
at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:100)
at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:55)
at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:279)
... 7 more
Is it something special to do?
Thanks again for your time
On Mon, Mar 7, 2011 at 7:44 PM, Vincent Legendre [via Drools - Java Rules
Engine] <ml-node+2647352-436278430-237284(a)n3.nabble.com> wrote:
> <html> <head> </head> <body text="#000000"
bgcolor="#ffffff">
>
> I've just created 2 class like you show me with some changes to fit and
> test all (timestamp are long in fact, i have put int, double and string as
> well)
>
> In the second class you don't need the attributes as members, because
> Drools uses get / set methods to deduce them, and anyway you never use them
> as they are stored in the map.
>
> Then i have imported this in Guvnor.
>
> I have made 2 categories. I have put the model (jar) in the 2 categories.
>
> That is non-sense. Jars are not linked to a category but to a package.
>
> I have created 2 simple rules playing with the attributes id,
> timestamp...
>
> With Guided editor ?
>
>
>
> 1) For the condition Map $m1 different then Map $m2. I suppose i have to
> use the function define in MapPojo? I have to write it by hand using "free
> from drl" : eval($m1 != $m2) ? or is there a better way?
>
> Its a way.
> You can also test the id directly in conditions (in Guided editor, bind
> the id of the first instance to a var, then compare it in the second
> condition.
>
>
> The same for testing that $m1 timestamp (Long) is befor $m2. I have to
> write it by hand : eval($m1.isBefore($m2))? So they have to know it exist a
> method isBefore if not said by the gui?
>
> Same. Add the test directly in the condition.
> Another solution is to use a custom operator (search this mailing list for
> samples).
>
> 2) In the code It's written MapTest1(..) instead of Map(...) so i
> suppose drools has to do it with the precompiled package .pkg to know about
> the MapPojo and MapTest1.. If i take only the .drl, drools won't know about
> class MapTest1.
>
> It is MapTest1, because this is the class used .... and drools knows it
> because it uses it ... You don't use Map directly anymore
>
>
> Yes i can set a category to each of my rule.
>
> Yes you can !
>
> Do you mean create 4 categories (cat1, cat2, cat3, cat4) and for rules
> of file1.drl, put them it cat1, for file2.drl, put them in cat2... ?
>
> Yes
>
> Set a first condition in the rules?
>
> Choose between categories and first condition. Don't use both
>
> Am i obliged to create a package per file and filter by category or is it
> possible to make a package with all and filtering when creating the
> knowledgeBase or something like that?
>
> You certainly can filter your KB afterwards, but this is not really an
> out-of-the-box function. To me you have two options. For both options, you
> have only one Guvnor package :*
>
> First option* : categories
> set categories for your rules as you said
> compile by filtering one category, do a snapshot. Redo the same for other
> categories (in other snapshots).
> Use these 4 snapshots in your code
>
> *Second option *: First filtering condition
> create a new POJO having only one field to handle the task asked (or
> category or group or file or whatever you call that) add a condition to all
> your rules testing this fact according to their group (as described in one
> of my previous mail)
> create a single package (or use DRL) for all your rules.
> when calling your rules, insert the suitable POJO according to tehexec you
> want.
>
> The second is my favorite because it is less work to deploy, and your
> number of rules are quite small. The second option can be change to use a
> RuleFlow instead of a control fact.
>
>
> </body> </html>
> _______________________________________________
> rules-users mailing list
> [hidden
email]<http://user/SendEmail.jtp?type=node&node=2647352&i=0&by-user=t>
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
> ------------------------------
> If you reply to this email, your message will be added to the discussion
> below:
>
>
http://drools-java-rules-engine.46999.n3.nabble.com/Guvnor-and-drools-imp...
> To unsubscribe from Guvnor and drools implementation - questions, click
>
here<http://drools-java-rules-engine.46999.n3.nabble.com/template/Naml...;.
>
>
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4832
days inactive
4841
days old
29 comments
6 participants
participants (6)
-
Eddy Hautot -
Esteban Aliverti -
ioda100
-
Saleem Lakhani -
Vincent Legendre -
Wolfgang Laun