API access to decision node's expression

[kv]

Hi all,

is there any way to set expression of the decision node (or conditions for transitions) programmatically, via API. I can specify it via xml definition of course. for example:

 <decision name="decision1" >
 <transition name='one' to="one">
 <condition>#{money=="one"}</condition>
 </transition>
 <transition name='two' to="two">
 <condition>#{money=="two"}</condition>
 </transition>
 </decision>

But I need to build a process definition in memory at run-time.

Thanks,
kv

[tansdale]

yes you can do that.

first, get List decisionConditions from decision(Decision' object)

second, get DecisionCondition's expression and transitionName
by calling
DecisionCondition.getExpression();
getTransitionName()

the following code can help you to understand what DecisionCondition is.

////
public class DecisionCondition implements Serializable {

 private static final long serialVersionUID = 1L;

 String transitionName;
 String expression;

 public DecisionCondition() {
 }

 public DecisionCondition(String transitionName, String expression) {
 this.transitionName = transitionName;
 this.expression = expression;
 }

 public String getExpression() {
 return expression;
 }
 public String getTransitionName() {
 return transitionName;
 }
}

[kv]

Sorry if I was not clear enough. I do not need to get expression. I need to set it. So instead of getExpression I need something like setExpression. I could use public constructor of DecisionCondition maybe but when I do something like this:

Decision decision1 = (Decision) procDef.getNode("decision1");
decision1.getDecisionConditions().add(new DecisionCondition("one", "#{money==\"one\"}"));

I get NullPointerException cause getDecisionConditions() returns null and not empty list.

Another thing is Decision class has decisionExpression field

public class Decision extends Node implements Parsable {
 ...
 String decisionExpression = null;

And again there is no way to set it programmaticaly.

Any suggestions?