// $Id: ChildGenUML.java 15989 2008-11-08 16:21:10Z tfmorris $
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package org.argouml.uml.cognitive.critics;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import org.apache.log4j.Logger;
import org.argouml.kernel.Project;
import org.argouml.model.Model;
import org.argouml.util.IteratorEnumeration;
import org.argouml.util.SingleElementIterator;
import org.tigris.gef.base.Diagram;
import org.tigris.gef.util.ChildGenerator;
/**
* This class gives critics access to parts of the UML model of the design. It
* defines a gen() function that returns the "children" of any given part of the
* UML model. Basically, it goes from Project, to Models, to ModelElements.
* Argo's critic Agency uses this to apply critics where appropriate.
*
* TODO: This thinks it knows all the composition associations of the the UML
* metamodel, but it is a) incomplete and b) not updated for UML 1.4. This
* should be done using information from the metamodel rather than hardwired
* code. - tfm - 20070205
*
* @see org.argouml.cognitive.Agency
* @see org.argouml.cognitive.Designer
* @author jrobbins
*/
public class ChildGenUML implements ChildGenerator {
private static final Logger LOG = Logger.getLogger(ChildGenUML.class);
/**
* Reply a java.util.Enumeration of the children of the given Object
*
* @param o
* the object to return the children of
* @return an enumeration of the children of the given Object
* @see org.tigris.gef.util.ChildGenerator#gen(java.lang.Object)
* @deprecated for 0.25.4 by tfmorris. Only for use with legacy GEF
* interfaces. Use {@link #gen2(Object)} for new applications.
*/
@Deprecated
public Enumeration gen(Object o) {
return new IteratorEnumeration(gen2(o));
}
/**
* Return an Iterator of the children of the given Object
*
* @param o
* object to return the children of
* @return an iterator over the children of the given object
* @see org.tigris.gef.util.ChildGenerator#gen(java.lang.Object)
*/
public Iterator gen2(Object o) {
if (LOG.isDebugEnabled()) {
if (o == null) {
LOG.debug("Object is null");
} else {
// LOG.debug("Finding children for " + o.getClass());
}
}
if (o instanceof Project) {
Project p = (Project) o;
Collection result = new ArrayList();
result.addAll(p.getUserDefinedModelList());
result.addAll(p.getDiagramList());
return result.iterator();
}
if (o instanceof Diagram) {
Collection figs = ((Diagram) o).getLayer().getContents();
if (figs != null) {
return figs.iterator();
}
}
// argument can be an instanceof a Fig which we ignore
if (Model.getFacade().isAPackage(o)) {
Collection ownedElements = Model.getFacade().getOwnedElements(o);
if (ownedElements != null) {
return ownedElements.iterator();
}
}
if (Model.getFacade().isAElementImport(o)) {
Object me = Model.getFacade().getModelElement(o);
if (me != null) {
return new SingleElementIterator(me);
}
}
// TODO: associationclasses fit both of the next 2 cases
if (Model.getFacade().isAClassifier(o)) {
Collection result = new ArrayList();
result.addAll(Model.getFacade().getFeatures(o));
Collection sms = Model.getFacade().getBehaviors(o);
// Object sm = null;
// if (sms != null && sms.size() > 0)
// sm = sms.elementAt(0);
// if (sm != null) res.addSub(new EnumerationSingle(sm));
if (sms != null) {
result.addAll(sms);
}
return result.iterator();
}
if (Model.getFacade().isAAssociation(o)) {
List assocEnds = (List) Model.getFacade().getConnections(o);
if (assocEnds != null) {
return assocEnds.iterator();
}
// TODO: AssociationRole
}
// // needed?
if (Model.getFacade().isAStateMachine(o)) {
Collection result = new ArrayList();
Object top = Model.getStateMachinesHelper().getTop(o);
if (top != null) {
result.add(top);
}
result.addAll(Model.getFacade().getTransitions(o));
return result.iterator();
}
// needed?
if (Model.getFacade().isACompositeState(o)) {
Collection substates = Model.getFacade().getSubvertices(o);
if (substates != null) {
return substates.iterator();
}
}
if (Model.getFacade().isAOperation(o)) {
Collection params = Model.getFacade().getParameters(o);
if (params != null) {
return params.iterator();
}
}
if (Model.getFacade().isAModelElement(o)) {
Collection behavior = Model.getFacade().getBehaviors(o);
if (behavior != null) {
return behavior.iterator();
}
}
// TODO: We can probably use this instead of all of the above
// legacy UML 1.3 code - tfm - 20070915
if (Model.getFacade().isAUMLElement(o)) {
Collection result = Model.getFacade().getModelElementContents(o);
return result.iterator();
}
return Collections.emptySet().iterator();
}
}