[jboss-user] [jBPM] - Re: Designer variable definitions and constrains

[Tihomir Surdilovic]

Tihomir Surdilovic [http://community.jboss.org/people/tsurdilovic] created the discussion

"Re: Designer variable definitions and constrains"

To view the discussion, visit: http://community.jboss.org/message/620140#620140

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First, we are putting alot of time into adding designer documentation, so bear with us until this is done. In addition we are working on pretty editors for process and node properties - currently alot of them are text-based. 
To answer your questions:

** process variable types **
Under Properties(BPMN Diagram), your process properties you will find a property called "Variable Definitions" where you can define process variables. Here you can define both the process variable names, as well as their type. For example if you enter there:

x:java.lang.String,y:java.lang.Object

this will produce the property definitions:
<bpmn2:property id="x" itemSubjectRef="_xItem"/>
<bpmn2:property id="y" itemSubjectRef="_yItem"/>
as well as the corresponding item definitions with the provided structureRef attribute values:
<bpmn2:itemDefinition id="_xItem" structureRef="java.lang.String"/>
<bpmn2:itemDefinition id="_yItem" structureRef="java.lang.Object"/>

So the sructure follows $varName:$varType and the whole list is comma-separated

** Condition Expression Language  **
Yes, if you do not enter a value in this field, Designer will default to  http://www.jboss.org/drools/rule http://www.jboss.org/drools/rule. You can enter in values here which are either "drools" or "mvel". For script tasks and onEntry/onExit actions of tasks, the allowed values of the script language are drools and java, with the default value set to  http://www.java.com/java http://www.java.com/java if you do not enter in the value

Hope this helps.
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