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Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/3 Vincent Legendre <vincent.legendre@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 ( 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 :_______________________________________________ rules-users mailing listReally 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,
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Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com
2011/3/1 ioda100 <[hidden email]>
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.You can define enumerations for a particular attribute.
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.
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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