[jboss-user] [jBPM] - jbpm4.4, how to get property from custom activity in jPDL(xml)

[Mead Lai]

Mead Lai [http://community.jboss.org/people/meadlai] created the discussion

"jbpm4.4,how to get property from custom activity in jPDL(xml)"

To view the discussion, visit: http://community.jboss.org/message/624702#624702

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jbpm4.4,how to get property from custom activity in jPDL(xml)
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<custom id="Act_2" name="myCustomTask" class="com.meadlai.CustomActivity" point="309,70" memo="">
    <property name="form"><string value="99801"/></property>
    <property name="mark"><string value=""/></property>
    <property name="model"><string value="2"/></property>
</custom>

===============
I know I can get property "model" in the class:"com.meadlai.CustomActivity" by coding:

public class CustomActivity{
private String model; //getter & setter to get the property
private String mark;
...
execute(){...}
...
}

===============
but, I need to get it in another way, just with taskName.

EnvironmentImpl environment = ((ProcessEngineImpl) processEngine).openEnvironment();
    try{
    ProcessDefinitionImpl pdf = execution.getProcessDefinition();
    ActivityImpl activity = pdf.getActivity(taskName);
         if ("custom".equals(activity.getType())) {
           Object model= activity.getProperty("model");
           System.out.println("model = "+ model);
          }
    }catch(Exception ex){

    }finally{
      environment.close();
    }

==============
sadly, I got "null" with this manner.
Could you please give me some clue? I am a newer.
Thanks very mcuh.
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