/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
* 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
*
*****************************************************************************/
package org.eclipse.papyrus.uml.service.types.matcher;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.emf.type.core.IElementMatcher;
import org.eclipse.papyrus.uml.service.types.element.UMLElementTypes;
import org.eclipse.papyrus.uml.service.types.utils.ElementUtil;
import org.eclipse.uml2.uml.Association;
import org.eclipse.uml2.uml.Element;
/**
* <pre>
* Test if current {@link Association} has the UML nature.
* This nature is used to:
* - distinguish between UML and SysML expected behavior for {@link Association}.
* - decide whether and {@link Association} can be dropped and used in a specific diagram.
* - select the property view to use.
*
* Existing Associations (created in previous Papyrus version and which have no nature set)
* are treated as UML Associations.
* </pre>
*/
public class AssociationMatcher implements IElementMatcher {
public boolean matches(EObject eObject) {
boolean isMatch = false;
if (eObject instanceof Association) {
Association association = (Association) eObject;
if (hasValidNature(association) || hasNoNature(association)) {
isMatch = true;
}
}
return isMatch;
}
private boolean hasValidNature(Element element) {
return ElementUtil.hasNature(element, UMLElementTypes.UML_NATURE);
}
private boolean hasNoNature(Element element) {
return (ElementUtil.getNature(element) == null);
}
}