/*****************************************************************************
* Copyright (c) 2009 Atos Origin.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Atos Origin - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.activity.edit.policies;
import java.util.Iterator;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gef.requests.ReconnectRequest;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.core.command.ICompositeCommand;
import org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand;
import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.SemanticEditPolicy;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.commands.MoveElementsCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyReferenceRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DuplicateElementsRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.GetEditContextRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.MoveRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.infra.extendedtypes.types.IExtendedHintedElementType;
import org.eclipse.papyrus.infra.services.edit.service.ElementEditServiceUtils;
import org.eclipse.papyrus.infra.services.edit.service.IElementEditService;
import org.eclipse.papyrus.uml.diagram.activity.edit.helpers.ObjectFlowEditHelper;
import org.eclipse.papyrus.uml.diagram.activity.edit.helpers.UMLBaseEditHelper;
import org.eclipse.papyrus.uml.diagram.activity.part.UMLDiagramEditorPlugin;
import org.eclipse.papyrus.uml.diagram.activity.part.UMLVisualIDRegistry;
import org.eclipse.papyrus.uml.diagram.activity.providers.UMLElementTypes;
import org.eclipse.uml2.uml.Action;
import org.eclipse.uml2.uml.Activity;
import org.eclipse.uml2.uml.ActivityEdge;
import org.eclipse.uml2.uml.ActivityNode;
import org.eclipse.uml2.uml.ActivityParameterNode;
import org.eclipse.uml2.uml.Comment;
import org.eclipse.uml2.uml.Constraint;
import org.eclipse.uml2.uml.ControlFlow;
import org.eclipse.uml2.uml.DecisionNode;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.ExceptionHandler;
import org.eclipse.uml2.uml.ExecutableNode;
import org.eclipse.uml2.uml.FinalNode;
import org.eclipse.uml2.uml.ForkNode;
import org.eclipse.uml2.uml.InitialNode;
import org.eclipse.uml2.uml.InputPin;
import org.eclipse.uml2.uml.JoinNode;
import org.eclipse.uml2.uml.MergeNode;
import org.eclipse.uml2.uml.ObjectFlow;
import org.eclipse.uml2.uml.ObjectNode;
import org.eclipse.uml2.uml.OutputPin;
import org.eclipse.uml2.uml.StructuredActivityNode;
import org.eclipse.uml2.uml.UMLPackage;
/**
* @generated
*/
public class UMLBaseItemSemanticEditPolicy extends SemanticEditPolicy {
/**
* Extended request data key to hold editpart visual id.
*
* @generated
*/
public static final String VISUAL_ID_KEY = "visual_id"; //$NON-NLS-1$
/**
* Extended request data key to hold the edge view during a reconnect request.
*
* @generated
*/
public static final String GRAPHICAL_RECONNECTED_EDGE = "graphical_edge"; //$NON-NLS-1$
/**
* @generated
*/
private final IElementType myElementType;
/**
* @generated
*/
protected UMLBaseItemSemanticEditPolicy(IElementType elementType) {
myElementType = elementType;
}
/**
* Extended request data key to hold editpart visual id.
* Add visual id of edited editpart to extended data of the request
* so command switch can decide what kind of diagram element is being edited.
* It is done in those cases when it's not possible to deduce diagram
* element kind from domain element.
*
* @generated
*/
@SuppressWarnings("unchecked")
public Command getCommand(Request request) {
if(request instanceof ReconnectRequest) {
Object view = ((ReconnectRequest)request).getConnectionEditPart().getModel();
if(view instanceof View) {
Integer id = new Integer(UMLVisualIDRegistry.getVisualID((View)view));
request.getExtendedData().put(VISUAL_ID_KEY, id);
request.getExtendedData().put(GRAPHICAL_RECONNECTED_EDGE, (View)view);
}
}
return super.getCommand(request);
}
/**
* Returns visual id from request parameters.
*
* @generated
*/
protected int getVisualID(IEditCommandRequest request) {
Object id = request.getParameter(VISUAL_ID_KEY);
return id instanceof Integer ? ((Integer)id).intValue() : -1;
}
/**
* @generated
*/
protected Command getSemanticCommand(IEditCommandRequest request) {
IEditCommandRequest completedRequest = completeRequest(request);
Command semanticCommand = getSemanticCommandSwitch(completedRequest);
semanticCommand = getEditHelperCommand(completedRequest, semanticCommand);
if(completedRequest instanceof DestroyRequest) {
DestroyRequest destroyRequest = (DestroyRequest)completedRequest;
return shouldProceed(destroyRequest) ? addDeleteViewCommand(semanticCommand, destroyRequest) : null;
}
return semanticCommand;
}
/**
* @generated
*/
protected Command addDeleteViewCommand(Command mainCommand, DestroyRequest completedRequest) {
Command deleteViewCommand = getGEFWrapper(new DeleteCommand(getEditingDomain(), (View)getHost().getModel()));
return mainCommand == null ? deleteViewCommand : mainCommand.chain(deleteViewCommand);
}
/**
* @generated NOT adding the possibility to globally disabling a request
*/
private Command getEditHelperCommand(IEditCommandRequest request, Command editPolicyCommand) {
// disable the request if necessary
if(requestIsDisabled(request)) {
return null;
}
if(editPolicyCommand != null) {
ICommand command = editPolicyCommand instanceof ICommandProxy ? ((ICommandProxy)editPolicyCommand).getICommand() : new CommandProxy(editPolicyCommand);
request.setParameter(UMLBaseEditHelper.EDIT_POLICY_COMMAND, command);
}
IElementType requestContextElementType = getContextElementType(request);
request.setParameter(UMLBaseEditHelper.CONTEXT_ELEMENT_TYPE, requestContextElementType);
ICommand command = requestContextElementType.getEditCommand(request);
request.setParameter(UMLBaseEditHelper.EDIT_POLICY_COMMAND, null);
request.setParameter(UMLBaseEditHelper.CONTEXT_ELEMENT_TYPE, null);
if(command != null) {
if(!(command instanceof CompositeTransactionalCommand)) {
command = new CompositeTransactionalCommand(getEditingDomain(), command.getLabel()).compose(command);
}
return new ICommandProxy(command);
}
return editPolicyCommand;
}
/**
* Check whether the request should be disabled.
*
* @param request
* the request to analyze
* @return true if the request must not succeed
* @generated NOT
*/
private boolean requestIsDisabled(IEditCommandRequest request) {
if(request instanceof MoveRequest) {
// prevent moving a constraint to another parent, since the representation would not be the same
for(Object element : ((MoveRequest)request).getElementsToMove().keySet()) {
if(element instanceof Constraint) {
return true;
}
}
}
return false;
}
/**
* @generated
*/
protected IElementType getContextElementType(IEditCommandRequest request) {
IElementType requestContextElementType = UMLElementTypes.getElementType(getVisualID(request));
return requestContextElementType != null ? requestContextElementType : myElementType;
}
/**
* @generated
*/
protected Command getSemanticCommandSwitch(IEditCommandRequest req) {
if(req instanceof CreateRelationshipRequest) {
return getCreateRelationshipCommand((CreateRelationshipRequest)req);
} else if(req instanceof CreateElementRequest) {
return getCreateCommand((CreateElementRequest)req);
} else if(req instanceof ConfigureRequest) {
return getConfigureCommand((ConfigureRequest)req);
} else if(req instanceof DestroyElementRequest) {
return getDestroyElementCommand((DestroyElementRequest)req);
} else if(req instanceof DestroyReferenceRequest) {
return getDestroyReferenceCommand((DestroyReferenceRequest)req);
} else if(req instanceof DuplicateElementsRequest) {
return getDuplicateCommand((DuplicateElementsRequest)req);
} else if(req instanceof GetEditContextRequest) {
return getEditContextCommand((GetEditContextRequest)req);
} else if(req instanceof MoveRequest) {
return getMoveCommand((MoveRequest)req);
} else if(req instanceof ReorientReferenceRelationshipRequest) {
return getReorientReferenceRelationshipCommand((ReorientReferenceRelationshipRequest)req);
} else if(req instanceof ReorientRelationshipRequest) {
return getReorientRelationshipCommand((ReorientRelationshipRequest)req);
} else if(req instanceof SetRequest) {
return getSetCommand((SetRequest)req);
}
return null;
}
/**
* @generated
*/
protected Command getConfigureCommand(ConfigureRequest req) {
return null;
}
/**
* @generated
*/
protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) {
return null;
}
/**
* @generated
*/
protected Command getCreateCommand(CreateElementRequest req) {
// no more usage of the extended types here.
return null;
}
/**
* @generated
*/
protected Command getExtendedTypeCreationCommand(CreateElementRequest request, IExtendedHintedElementType requestElementType) {
IElementEditService provider = ElementEditServiceUtils.getCommandProvider(request.getContainer());
if(provider == null) {
return UnexecutableCommand.INSTANCE;
}
// Retrieve create command from the Element Edit service
ICommand createGMFCommand = provider.getEditCommand(request);
return getGEFWrapper(createGMFCommand);
}
/**
* @generated
*/
protected Command getExtendedStartCreateRelationshipCommand(CreateElementRequest request, IExtendedHintedElementType requestElementType) {
IElementEditService provider = ElementEditServiceUtils.getCommandProvider(requestElementType);
if(provider == null) {
return UnexecutableCommand.INSTANCE;
}
// Retrieve create command from the Element Edit service
ICommand createGMFCommand = provider.getEditCommand(request);
return getGEFWrapper(createGMFCommand);
}
/**
* @generated
*/
protected Command getExtendedCompleteCreateRelationshipCommand(CreateElementRequest request, IExtendedHintedElementType requestElementType) {
IElementEditService provider = ElementEditServiceUtils.getCommandProvider(requestElementType);
if(provider == null) {
return UnexecutableCommand.INSTANCE;
}
// Retrieve create command from the Element Edit service
ICommand createGMFCommand = provider.getEditCommand(request);
return getGEFWrapper(createGMFCommand);
}
/**
* @generated
*/
protected Command getSetCommand(SetRequest req) {
return null;
}
/**
* @generated
*/
protected Command getEditContextCommand(GetEditContextRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDestroyElementCommand(DestroyElementRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDestroyReferenceCommand(DestroyReferenceRequest req) {
return null;
}
/**
* @generated
*/
protected Command getDuplicateCommand(DuplicateElementsRequest req) {
return null;
}
/**
* @generated
*/
protected Command getMoveCommand(MoveRequest req) {
EObject targetCEObject = req.getTargetContainer();
if(targetCEObject != null) {
IElementEditService provider = ElementEditServiceUtils.getCommandProvider(targetCEObject);
if(provider != null) {
ICommand moveCommand = provider.getEditCommand(req);
if(moveCommand != null) {
return new ICommandProxy(moveCommand);
}
}
return UnexecutableCommand.INSTANCE;
} else {
return getGEFWrapper(new MoveElementsCommand(req));
}
}
/**
* @generated
*/
protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
/**
* @generated
*/
protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
/**
* @generated
*/
protected final Command getGEFWrapper(ICommand cmd) {
return new ICommandProxy(cmd);
}
/**
* Returns editing domain from the host edit part.
*
* @generated
*/
protected TransactionalEditingDomain getEditingDomain() {
return ((IGraphicalEditPart)getHost()).getEditingDomain();
}
/**
* Clean all shortcuts to the host element from the same diagram
*
* @generated
*/
protected void addDestroyShortcutsCommand(ICompositeCommand cmd, View view) {
assert view.getEAnnotation("Shortcut") == null; //$NON-NLS-1$
for(Iterator it = view.getDiagram().getChildren().iterator(); it.hasNext();) {
View nextView = (View)it.next();
if(nextView.getEAnnotation("Shortcut") == null || !nextView.isSetElement() || nextView.getElement() != view.getElement()) { //$NON-NLS-1$
continue;
}
cmd.add(new DeleteCommand(getEditingDomain(), nextView));
}
}
/**
* @generated
*/
public static LinkConstraints getLinkConstraints() {
LinkConstraints cached = UMLDiagramEditorPlugin.getInstance().getLinkConstraints();
if(cached == null) {
UMLDiagramEditorPlugin.getInstance().setLinkConstraints(cached = new LinkConstraints());
}
return cached;
}
/**
* @generated
*/
public static class LinkConstraints {
/**
* @generated
*/
public LinkConstraints() {
// use static method #getLinkConstraints() to access instance
}
/**
* @generated
*/
public boolean canCreateActionLocalPrecondition_4001(Action source, Constraint target) {
if(source != null) {
if(source.getLocalPreconditions().contains(target)) {
return false;
}
if(source == target) {
return false;
}
}
return canExistActionLocalPrecondition_4001(source, target);
}
/**
* @generated
*/
public boolean canCreateActionLocalPostcondition_4002(Action source, Constraint target) {
if(source != null) {
if(source.getLocalPostconditions().contains(target)) {
return false;
}
if(source == target) {
return false;
}
}
return canExistActionLocalPostcondition_4002(source, target);
}
/**
* @generated
*/
public boolean canCreateObjectFlow_4003(Activity container, ActivityNode source, ActivityNode target) {
return canExistObjectFlow_4003(container, null, source, target);
}
/**
* @generated
*/
public boolean canCreateControlFlow_4004(Activity container, ActivityNode source, ActivityNode target) {
return canExistControlFlow_4004(container, null, source, target);
}
/**
* @generated
*/
public boolean canCreateExceptionHandler_4005(ExecutableNode container, ExecutableNode source, ObjectNode target) {
return canExistExceptionHandler_4005(container, null, source, target);
}
/**
* @generated
*/
public boolean canCreateCommentAnnotatedElement_4006(Comment source, Element target) {
if(source != null) {
if(source.getAnnotatedElements().contains(target)) {
return false;
}
}
return canExistCommentAnnotatedElement_4006(source, target);
}
/**
* @generated
*/
public boolean canCreateConstraintConstrainedElement_4007(Constraint source, Element target) {
if(source != null) {
if(source.getConstrainedElements().contains(target)) {
return false;
}
}
return canExistConstraintConstrainedElement_4007(source, target);
}
/**
* @generated
*/
public boolean canExistActionLocalPrecondition_4001(Action source, Constraint target) {
return true;
}
/**
* @generated
*/
public boolean canExistActionLocalPostcondition_4002(Action source, Constraint target) {
return true;
}
/**
* @generated
*/
public boolean canExistObjectFlow_4003(Activity container, ObjectFlow linkInstance, ActivityNode source, ActivityNode target) {
try {
if(source instanceof Action) {
// rule validateObjectFlow_validateNoActions
// rule workaround by addition of pins in case of Action
if(!ObjectFlowEditHelper.canStartNewObjectFlow((Action)source)) {
return false;
}
}
if(source instanceof InputPin) {
// rule validateInputPin_validateOutgoingEdgesStructuredOnly
if(source.getOwner() instanceof StructuredActivityNode) {
if(target != null && !source.getOwner().equals(target.getInStructuredNode())) {
return false;
}
} else {
return false;
}
}
if(source instanceof InitialNode) {
// rule validateInitialNode_validateControlEdges
return false;
}
if(source instanceof FinalNode) {
// rule validateFinalNode_validateNoOutgoingEdges
return false;
}
if(source instanceof JoinNode) {
// rule validateJoinNode_validateOneOutgoingEdge
if(!source.getOutgoings().isEmpty()) {
return false;
}
/*
* rule validateJoinNode_validateIncomingObjectFlow :
* We do not prevent creation of an outgoing ObjectFlow even if there is no incoming ObjectFlow.
* We let the possibility that the user intends to add an incoming ObjectFlow later.
*/
}
if(source instanceof ForkNode) {
// rule validateForkNode_validateEdges on source Fork node
ActivityEdge outgoingControlFlow = source.getOutgoing(null, true, UMLPackage.eINSTANCE.getControlFlow());
ActivityEdge incomingControlFlow = source.getIncoming(null, true, UMLPackage.eINSTANCE.getControlFlow());
if(outgoingControlFlow != null || incomingControlFlow != null) {
// there is a ControlFlow which means there must be no ObjectFlow
return false;
}
}
if(source instanceof MergeNode) {
//rule validateMergeNode_validateOneOutgoingEdge
if(!source.getOutgoings().isEmpty()) {
return false;
}
// rule validateMergeNode_validateEdges on source Merge node
ActivityEdge outgoingControlFlow = source.getOutgoing(null, true, UMLPackage.eINSTANCE.getControlFlow());
ActivityEdge incomingControlFlow = source.getIncoming(null, true, UMLPackage.eINSTANCE.getControlFlow());
if(outgoingControlFlow != null || incomingControlFlow != null) {
// there is a ControlFlow which means there must be no ObjectFlow
return false;
}
}
if(source instanceof DecisionNode) {
// rule validateDecisionNode_validateEdges on source Decision node
ActivityEdge outgoingControlFlow = source.getOutgoing(null, true, UMLPackage.eINSTANCE.getControlFlow());
ActivityEdge incomingControlFlow = source.getIncoming(null, true, UMLPackage.eINSTANCE.getControlFlow());
if(outgoingControlFlow != null || incomingControlFlow != null) {
// there is a ControlFlow which means there must be no ObjectFlow
return false;
}
}
if(source instanceof ActivityParameterNode) {
// rule validateActivityParameterNode_validateIncomingOrOutgoing
EList<ActivityEdge> incomings = source.getIncomings();
if(!incomings.isEmpty()) {
return false;
}
}
if(target instanceof Action) {
// rule validateObjectFlow_validateNoActions
// rule workaround by addition of pins in case of Action
if(!ObjectFlowEditHelper.canEndNewObjectFlow((Action)target)) {
return false;
}
}
if(target instanceof OutputPin) {
// rule validateOutputPin_validateIncomingEdgesStructuredOnly
if(target.getOwner() instanceof StructuredActivityNode) {
if(source != null && !target.getOwner().equals(source.getInStructuredNode())) {
return false;
}
} else {
return false;
}
}
if(target instanceof InitialNode) {
// rule validateInitialNode_validateNoIncomingEdges
return false;
}
if(target instanceof JoinNode) {
// rule validateJoinNode_validateIncomingObjectFlow
ActivityEdge outgoingControlFlow = target.getOutgoing(null, true, UMLPackage.eINSTANCE.getControlFlow());
if(outgoingControlFlow != null) {
// the outgoing edge is a ControlFlow which means there must be no incoming ObjectFlow
return false;
}
}
if(target instanceof ForkNode) {
// rule validateForkNode_validateOneIncomingEdge
if(!target.getIncomings().isEmpty()) {
return false;
}
// rule validateForkNode_validateEdges on target Fork node
ActivityEdge outgoingControlFlow = target.getOutgoing(null, true, UMLPackage.eINSTANCE.getControlFlow());
ActivityEdge incomingControlFlow = target.getIncoming(null, true, UMLPackage.eINSTANCE.getControlFlow());
if(outgoingControlFlow != null || incomingControlFlow != null) {
// there is a ControlFlow which means there must be no ObjectFlow
return false;
}
}
if(target instanceof MergeNode) {
// rule validateMergeNode_validateEdges on target Merge node
ActivityEdge outgoingControlFlow = target.getOutgoing(null, true, UMLPackage.eINSTANCE.getControlFlow());
ActivityEdge incomingControlFlow = target.getIncoming(null, true, UMLPackage.eINSTANCE.getControlFlow());
if(outgoingControlFlow != null || incomingControlFlow != null) {
// there is a ControlFlow which means there must be no ObjectFlow
return false;
}
}
if(target instanceof DecisionNode) {
// rule validateDecisionNode_validateIncomingOutgoingEdges
if(target.getIncomings().size() >= 2) {
// no more than two incoming edges
return false;
}
// rule validateDecisionNode_validateEdges on target Decision node
ActivityEdge outgoingControlFlow = target.getOutgoing(null, true, UMLPackage.eINSTANCE.getControlFlow());
ActivityEdge incomingControlFlow = target.getIncoming(null, true, UMLPackage.eINSTANCE.getControlFlow());
if(outgoingControlFlow != null || incomingControlFlow != null) {
/*
* There is a ControlFlow which means there must be no
* ObjectFlow but the decision flow itself.
* We let the user insert up to one ObjectFlow for being
* able to select the decision flow among existing
* input flows.
*/
if(target.getIncoming(null, true, UMLPackage.eINSTANCE.getObjectFlow()) != null) {
// there is already an object flow which is intended to become the decision flow
return false;
}
}
}
if(target instanceof ActivityParameterNode) {
// rule validateActivityParameterNode_validateIncomingOrOutgoing
EList<ActivityEdge> outgoings = target.getOutgoings();
if(!outgoings.isEmpty()) {
return false;
}
}
return true;
} catch (Exception e) {
UMLDiagramEditorPlugin.getInstance().logError("Link constraint evaluation error", e); //$NON-NLS-1$
return false;
}
}
/**
* @generated
*/
public boolean canExistControlFlow_4004(Activity container, ControlFlow linkInstance, ActivityNode source, ActivityNode target) {
try {
if(source instanceof ObjectNode) {
if(!((ObjectNode)source).isControlType()) {
// rule validateControlFlow_validateObjectNodes
return false;
}
}
if(source instanceof InputPin) {
// rule validateInputPin_validateOutgoingEdgesStructuredOnly
if(source.getOwner() instanceof StructuredActivityNode) {
if(target != null && !source.getOwner().equals(target.getInStructuredNode())) {
return false;
}
} else {
return false;
}
}
if(source instanceof FinalNode) {
// rule validateFinalNode_validateNoOutgoingEdges
return false;
}
if(source instanceof JoinNode) {
// rule validateJoinNode_validateOneOutgoingEdge
if(!source.getOutgoings().isEmpty()) {
return false;
}
// rule validateJoinNode_validateIncomingObjectFlow
ActivityEdge incomingObjectFlow = source.getIncoming(null, true, UMLPackage.eINSTANCE.getObjectFlow());
if(incomingObjectFlow != null) {
// the outgoing edge must be an ObjectFlow
return false;
}
}
if(source instanceof ForkNode) {
// rule validateForkNode_validateEdges on source Fork node
ActivityEdge outgoingObjectFlow = source.getOutgoing(null, true, UMLPackage.eINSTANCE.getObjectFlow());
ActivityEdge incomingObjectFlow = source.getIncoming(null, true, UMLPackage.eINSTANCE.getObjectFlow());
if(outgoingObjectFlow != null || incomingObjectFlow != null) {
// there is an ObjectFlow which means there must be no ControlFlow
return false;
}
}
if(source instanceof MergeNode) {
//rule validateMergeNode_validateOneOutgoingEdge
if(!source.getOutgoings().isEmpty()) {
return false;
}
// rule validateMergeNode_validateEdges on source Merge node
ActivityEdge outgoingObjectFlow = source.getOutgoing(null, true, UMLPackage.eINSTANCE.getObjectFlow());
ActivityEdge incomingObjectFlow = source.getIncoming(null, true, UMLPackage.eINSTANCE.getObjectFlow());
if(outgoingObjectFlow != null || incomingObjectFlow != null) {
// there is an ObjectFlow which means there must be no ControlFlow
return false;
}
}
if(source instanceof DecisionNode) {
// rule validateDecisionNode_validateEdges on source Decision node
ActivityEdge outgoingObjectFlow = source.getOutgoing(null, true, UMLPackage.eINSTANCE.getObjectFlow());
int incomingObjectFlowNumber = 0;
for(ActivityEdge incomingEdge : source.getIncomings()) {
if(incomingEdge instanceof ObjectFlow) {
incomingObjectFlowNumber++;
}
}
if(outgoingObjectFlow != null || incomingObjectFlowNumber > 1) {
// there is an ObjectFlow (not intended for decisionInputFlow) which means there must be no ControlFlow
return false;
}
}
if(target instanceof ObjectNode) {
if(!((ObjectNode)target).isControlType()) {
// rule validateControlFlow_validateObjectNodes
return false;
}
}
if(target instanceof OutputPin) {
// rule validateOutputPin_validateIncomingEdgesStructuredOnly
if(target.getOwner() instanceof StructuredActivityNode) {
if(source != null && !target.getOwner().equals(source.getInStructuredNode())) {
return false;
}
} else {
return false;
}
}
if(target instanceof InitialNode) {
// rule validateInitialNode_validateNoIncomingEdges
return false;
}
if(target instanceof ForkNode) {
// rule validateForkNode_validateOneIncomingEdge
if(!target.getIncomings().isEmpty()) {
return false;
}
// rule validateForkNode_validateEdges on target Fork node
ActivityEdge outgoingObjectFlow = target.getOutgoing(null, true, UMLPackage.eINSTANCE.getObjectFlow());
ActivityEdge incomingObjectFlow = target.getIncoming(null, true, UMLPackage.eINSTANCE.getObjectFlow());
if(outgoingObjectFlow != null || incomingObjectFlow != null) {
// there is an ObjectFlow which means there must be no ControlFlow
return false;
}
}
if(target instanceof MergeNode) {
// rule validateMergeNode_validateEdges on target Merge node
ActivityEdge outgoingObjectFlow = target.getOutgoing(null, true, UMLPackage.eINSTANCE.getObjectFlow());
ActivityEdge incomingObjectFlow = target.getIncoming(null, true, UMLPackage.eINSTANCE.getObjectFlow());
if(outgoingObjectFlow != null || incomingObjectFlow != null) {
// there is an ObjectFlow which means there must be no ControlFlow
return false;
}
}
if(target instanceof DecisionNode) {
// rule validateDecisionNode_validateIncomingOutgoingEdges
if(target.getIncomings().size() >= 2) {
// no more than two incoming edges
return false;
}
// rule validateDecisionNode_validateEdges on target Decision node
ActivityEdge outgoingObjectFlow = target.getOutgoing(null, true, UMLPackage.eINSTANCE.getObjectFlow());
ActivityEdge incomingObjectFlow = null;
for(ActivityEdge incomingEdge : target.getIncomings()) {
// filter the decision flow
if(incomingEdge instanceof ObjectFlow && incomingEdge != ((DecisionNode)target).getDecisionInputFlow()) {
incomingObjectFlow = incomingEdge;
}
}
if(outgoingObjectFlow != null || incomingObjectFlow != null) {
// there is an ObjectFlow which means there must be no ControlFlow
return false;
}
}
return true;
} catch (Exception e) {
UMLDiagramEditorPlugin.getInstance().logError("Link constraint evaluation error", e); //$NON-NLS-1$
return false;
}
}
/**
* @generated
*/
public boolean canExistExceptionHandler_4005(ExecutableNode container, ExceptionHandler linkInstance, ExecutableNode source, ObjectNode target) {
return true;
}
/**
* @generated
*/
public boolean canExistCommentAnnotatedElement_4006(Comment source, Element target) {
return true;
}
/**
* @generated
*/
public boolean canExistConstraintConstrainedElement_4007(Constraint source, Element target) {
return true;
}
}
}