[jboss-user] [JBoss jBPM] - Re: required variables

[dleerob]

If you take a look at the initializeVariables method, it actually does copy across the variables locally, but with a null value. Basically, the validation won't ever work because it doesn't take null values into account, and a null value is always copied acrossed to the local task instance, even if the variable is not readable.

if (variableAccesses!=null) {
  |         Iterator iter = variableAccesses.iterator();
  |         while (iter.hasNext()) {
  |           VariableAccess variableAccess = (VariableAccess) iter.next();
  |           String mappedName = variableAccess.getMappedName();
  |           if (variableAccess.isReadable()) {
  |             String variableName = variableAccess.getVariableName();
  |             Object value = contextInstance.getVariable(variableName, token);
  |             log.debug("creating task instance variable '"+mappedName+"' from process variable '"+variableName+"', value '"+value+"'");
  |             taskInstance.setVariableLocally(mappedName, value);
  |           } else {
  |             log.debug("creating task instance local variable '"+mappedName+"'. initializing with null value.");
  |             taskInstance.setVariableLocally(mappedName, null);
  |           }
  |         }
  |       }
Note the "else" block:
else {
  |             log.debug("creating task instance local variable '"+mappedName+"'. initializing with null value.");
  |             taskInstance.setVariableLocally(mappedName, null);
  |           }
  | 

Please correct me if I'm mistaken, as I just took a quick look.

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