/**
* Returns all return parameters for an operation.
*
* @param operation
* @return Collection
*/
public Collection getReturnParameters(MOperation operation) {
Vector returnParams = new Vector();
MParameter firstReturnParameter = null;
Iterator params = operation.getParameters().iterator();
while (params.hasNext()) {
MParameter parameter = (MParameter) params.next();
if ((parameter.getKind()).equals(MParameterDirectionKind.RETURN)) {
returnParams.add(parameter);
}
}
return (Collection) returnParams;
}
/**
* Build a returnparameter. Removes all current return parameters from the operation and adds the
* supplied parameter. The directionkind of the parameter will be return. The name will be equal
* to the name of the last found return parameter or the default value "return" if no return
* parameter was present in the operation.
*
* @param operation
* @param newReturnParameter
*/
public void setReturnParameter(MOperation operation, MParameter newReturnParameter) {
Iterator params = operation.getParameters().iterator();
String name = "return";
while (params.hasNext()) {
MParameter parameter = (MParameter) params.next();
if ((parameter.getKind()).equals(MParameterDirectionKind.RETURN)) {
operation.removeParameter(parameter);
if (parameter.getName() != null || parameter.getName() == "") {
name = parameter.getName();
}
}
}
newReturnParameter.setName(name);
newReturnParameter.setKind(MParameterDirectionKind.RETURN);
operation.addParameter(0, newReturnParameter);
// we set the listeners to the figs here too
// it would be better to do that in the figs themselves
Project p = ProjectBrowser.TheInstance.getProject();
Iterator it = p.findFigsForMember(operation).iterator();
while (it.hasNext()) {
MElementListener listener = (MElementListener) it.next();
// UmlModelEventPump.getPump().removeModelEventListener(listener, newReturnParameter);
UmlModelEventPump.getPump().addModelEventListener(listener, newReturnParameter);
}
}
/**
* this method finds all paramters of the given operation which have the MParamterDirectionType
* RETURN. If it is only one, it is returned. In case there are no return parameters, null is
* returned. If there is more than one return paramter, first of them is returned, but a message
* is written to System.out
*
* @param operation the operation you want to find the return parameter for
* @return If this operation has only one paramter with Kind: RETURN, this is it, otherwise null
*/
public MParameter getReturnParameter(MOperation operation) {
Vector returnParams = new Vector();
MParameter firstReturnParameter = null;
Iterator params = operation.getParameters().iterator();
while (params.hasNext()) {
MParameter parameter = (MParameter) params.next();
if ((parameter.getKind()).equals(MParameterDirectionKind.RETURN)) {
returnParams.add(parameter);
}
}
switch (returnParams.size()) {
case 1:
return (MParameter) returnParams.elementAt(0);
case 0:
cat.debug("No ReturnParameter found!");
return null;
default:
cat.debug("More than one ReturnParameter found, returning first!");
return (MParameter) returnParams.elementAt(0);
}
}