Using multiple spreadsheet files in drools
by dtrinh4000
Hi,
I am trying to split my current huge decision table in one excel spreadsheet
into multiple excel files. However, I am unable to run my ruleflow correctly
when they are split up.
Although they compile okay when seperated, the only spreadsheet that ever
gets read is the last one that i compile with the drools spreadsheet
compiler, even though they all get added into the package builder after
compiling them into a drl.
I've tried to search everywhere for the solution but i'm coming up empty.
maybe i am not searching w/ the right parameters. How do I split a decision
table into multiple excel spreadsheets or even workbooks and get them to run
as if they were all in one single excel file?
Would a better way of phrasing my question be, how do i combine multiple
spreadsheets into one drl file?
Thanks.
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16 years, 11 months
MVEL parsing / keyword conflict
by Simon Thum
Hi all,
I've stumbled on some mvel integration issues in 5.0.1. I'm using drools
to do, among others, spatial reasoning. At insertion time I maintain a
specialized index, which can be queried later using [collect] from. This
works fine in general.
However, as soon as I use the mvel 2 projections a.k.a. 'in' keyword,
hell breaks loose. 'in' is described here:
http://mvel.codehaus.org/MVEL+2.0+Projections+and+Folds
But I only seem to get syntax errors. If it is possible, to somehow
escape keywords or explicitly pipe through the mvel part, please let me
know!
Needless to say, this feature would be great to have since my object
model is mainly fixed and 'is' allows me to compensate that. Worse, I'd
need to assert objects I don't want to assert to work around.
I tried parenthesizing, only to discover that
... from valid_stmt
is fine, but
... from (valid_stmt)
won't work either. Error 101, reason unknown, but it doesn't even make
it through the parser.
I'd really appreciate to be given an idea why what I did went wrong.
Googling around didn't get me too far.
Cheers,
Simon
16 years, 11 months
Templates Documented as Experimental from Community, not from Red Hat
by Ken Archer
The jboss.org documentation describes rule templates as "an experimental feature. In particular, the API is
subject to change". However, the Red Hat documentation does not caveat rule templates as "experimental" in any way. Are templates (which are available in other BRMSs) no longer considered "experimental"? Thanks so much.
Ken Archer
Telogical Systems
16 years, 11 months
Re: [rules-users] Drools Guvnor Remoting API
by Michael Rhoden
Michael Neale would know better on the progress, but we discussed this exact feature back at Javaone a few months ago. My view is the selectors are still experimental, but are very close to being able to use. There have been talks about how to harden it up and do just what you are asking for. I believe there is a REST api for guvnor as well as webdav, but I dont think they talk to the selectors yet, though I could be wrong.
Given this is a feature we want, and I know Michael Neale has agreed its a good idea and needed, what is your interest in Co-developing/Testing something like this with us?
Michael Rhoden
VP - IT Development
Franklin American Mortgage Company
Direct: 615-778-1117
Fax: 615-778-2766
Email: mrhoden(a)franklinamerican.com
----- Original Message -----
From: "Steve Ronderos" <steve.ronderos(a)ni.com>
To: rules-users(a)lists.jboss.org
Sent: Tuesday, August 4, 2009 10:42:33 AM GMT -06:00 US/Canada Central
Subject: [rules-users] Drools Guvnor Remoting API
Hello Again,
I asked a question similar to this awhile back, David Sinclair answered some of my questions, but I'm still looking for a few features.
Here is my use case.
We are deploying Guvnor to an enterprise environment.
We plan on having one Guvnor for our rule authors to create/edit rules in.
We plan on using selectors to control which rules are included into packages that are built for different environments (development, test, production).
We can't have our application that use rules pointing directly at the Guvnor instance.
We want an automated "deployment" process.
Here is what I was thinking.
I would like to be able to invoke a build, using a specified selector, then create a snapshot that follows a specific naming convention (ie with the selector's name in the snapshot name), in sequence. In order to do this, I would like to, from a remote application, tell Guvnor to do a build, then to do a snapshot. So essentially what I'm asking for is a remoting API for Guvnor's features. I've looked through some of the Guvnor code and I believe I see that there is a remote API for the drools-repository that Guvnor sits on, but what I need is specifically Guvnor's features to be made available in a remoting API.
Does anyone know if such a thing exists? If not is it planned? If not, am I even asking for a desirable feature?
Thanks,
Steve Ronderos
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16 years, 11 months
Drools Guvnor Remoting API
by Steve Ronderos
Hello Again,
I asked a question similar to this awhile back, David Sinclair answered
some of my questions, but I'm still looking for a few features.
Here is my use case.
We are deploying Guvnor to an enterprise environment.
We plan on having one Guvnor for our rule authors to create/edit rules in.
We plan on using selectors to control which rules are included into
packages that are built for different environments (development, test,
production).
We can't have our application that use rules pointing directly at the
Guvnor instance.
We want an automated "deployment" process.
Here is what I was thinking.
I would like to be able to invoke a build, using a specified selector,
then create a snapshot that follows a specific naming convention (ie with
the selector's name in the snapshot name), in sequence. In order to do
this, I would like to, from a remote application, tell Guvnor to do a
build, then to do a snapshot. So essentially what I'm asking for is a
remoting API for Guvnor's features. I've looked through some of the
Guvnor code and I believe I see that there is a remote API for the
drools-repository that Guvnor sits on, but what I need is specifically
Guvnor's features to be made available in a remoting API.
Does anyone know if such a thing exists? If not is it planned? If not, am
I even asking for a desirable feature?
Thanks,
Steve Ronderos
16 years, 11 months
Re: [rules-users] Drools fusion query
by Justin King
Hi,
>
> My names Justin King, I'm a part of a research project at Swinburne
> University of Technology in Melbourne, Australia. my question is in regards
> to the new Drools and more specifically fusion. I'm having trouble
> determining whether Fusion might fulfill a requirement of our project so
> maybe you can help me out. Essentially we are in need of an Event Condition
> Action (ECA) engine. We wish to be able to define trigger the firings of
> certain rules based on an event occurring inside our system, e.g. a timer
> going off. Any sets of rules listening for this event should evaluate their
> 'when' conditions and execute their 'then' actions. So essentially its
> something like:
>
> Event: Timer expires
> Rule: rule 1
>
> Event Timer expires
> Rule: rule 3
>
> So rule 1 and 3 have now 'subscribed' to the timer event. so rule 1 might
> be something like
>
> CONDITION 'if students have not finished their exam'
> ACTION 'fail students'
>
> Does drools fusion allow for this type of ECA pattern, or is it a different
> form on engine.
>
> Thanks very much,
>
> Justin King
> Faculty of I.C.T.
> Swinburne University of Technology, Melbourne, Australia
>
>
16 years, 11 months
Re: [rules-users] Question on eval block
by Shah, Malay
Minor correction in the rule:
The eval block is:
eval(lastCapacity == null && entityOid == parentOid && msgType == "8")
instead of
eval(lastCapacity != null && entityOid == parentOid && msgType == "8")
Any help is much appreciated.
Thanks
Malay Shah
________________________________
From: Shah, Malay (IDEAS)
Sent: Monday, August 03, 2009 4:18 PM
To: rules-users(a)lists.jboss.org
Subject: Question on eval block
Hi,
I am trying to use eval block in one of the rules and am a bit confused
about it. The rule is something like this:
rule "LastCapacity"
when
e: Execution(lastCapacity:lastCapacity,parentOid:parentOid)
eo:
ExecutionOrder(entityOid:entityOid,msgType:msgType,execType:execType)
eval(lastCapacity != null && entityOid == parentOid && msgType ==
"8")
then
..................
end
where Execution and ExecutionOrder are 2 objects that are linked by an
ID. I expect eval to return true for certain sets of objects that I
send. But, the above rule exits without running the consequence. On the
other hand, when I write the rule as:
rule "LastCapacity"
when
e: Execution(lastCapacity:lastCapacity==null,parentOid:parentOid)
eo: ExecutionOrder(entityOid:entityOid == parentOid, msgType == "8")
then
.............................
end
the rule triggers the consequence for same set of objects. I thought
that if the expression in eval block comes out to be true, the
consequence will be triggered. Am I missing something obvious here?
Thanks
Malay Shah
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16 years, 11 months
Question on eval block
by Shah, Malay
Hi,
I am trying to use eval block in one of the rules and am a bit confused
about it. The rule is something like this:
rule "LastCapacity"
when
e: Execution(lastCapacity:lastCapacity,parentOid:parentOid)
eo:
ExecutionOrder(entityOid:entityOid,msgType:msgType,execType:execType)
eval(lastCapacity != null && entityOid == parentOid && msgType ==
"8")
then
..................
end
where Execution and ExecutionOrder are 2 objects that are linked by an
ID. I expect eval to return true for certain sets of objects that I
send. But, the above rule exits without running the consequence. On the
other hand, when I write the rule as:
rule "LastCapacity"
when
e: Execution(lastCapacity:lastCapacity==null,parentOid:parentOid)
eo: ExecutionOrder(entityOid:entityOid == parentOid, msgType == "8")
then
.............................
end
the rule triggers the consequence for same set of objects. I thought
that if the expression in eval block comes out to be true, the
consequence will be triggered. Am I missing something obvious here?
Thanks
Malay Shah
--------------------------------------------------------------------------
NOTICE: If received in error, please destroy, and notify sender. Sender does not intend to waive confidentiality or privilege. Use of this email is prohibited when received in error. We may monitor and store emails to the extent permitted by applicable law.
16 years, 11 months
Error unmarshalling KnowledgeBase
by nestabur
Hi all,
I'm getting 2 different errors trying to unmarshalling 2 different KBases:
1: org.drools.RuntimeDroolsException: unable to determine operator for
symbol [after]
2: java.io.StreamCorruptedException: invalid stream header: 776CACED
The 1st one seems to be caused when using the operator after in the DRL, so
the marshalling/unmarshalling strategies dont support CEP rules?
The 2nd one could be caused because of using different marshallers ... but I
use the same!!
My marshalling methods are:
public void save(FileOutputStream out) throws IOException{
DroolsObjectOutputStream droolsOut = new
DroolsObjectOutputStream(out);
droolsOut.writeObject(ksession.getKnowledgeBase());
Marshaller mas =
createMarshaller(ksession.getKnowledgeBase());
mas.marshall(droolsOut, ksession);
}
public void load(FileInputStream input) throws IOException,
ClassNotFoundException{
DroolsObjectInputStream droolsIn = new
DroolsObjectInputStream(input);
KnowledgeBase kbase = (KnowledgeBase)droolsIn.readObject();
Marshaller mas = createMarshaller(kbase);
ksession = mas.unmarshall(input);
}
private Marshaller createMarshaller(KnowledgeBase kbase){
ObjectMarshallingStrategyAcceptor acceptor =
MarshallerFactory.newClassFilterAcceptor(new String[]{"*.*"});
ObjectMarshallingStrategy strategy =
MarshallerFactory.newSerializeMarshallingStrategy(acceptor);
return MarshallerFactory.newMarshaller(kbase,new
ObjectMarshallingStrategy[]{strategy});
}
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16 years, 11 months
