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/*****************************************************************************
* Copyright (c) 2013 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
*
* Contributors:
* Ansgar Radermacher ansgar.radermacher@cea.fr
*
*****************************************************************************/
package org.eclipse.papyrus.qompass.designer.validation.constraints;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.validation.AbstractModelConstraint;
import org.eclipse.emf.validation.IValidationContext;
import org.eclipse.papyrus.FCM.DerivedElement;
import org.eclipse.papyrus.uml.tools.utils.StereotypeUtil;
import org.eclipse.papyrus.qompass.designer.core.templates.TemplateUtils;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.Package;
import org.eclipse.uml2.uml.Type;
import org.eclipse.uml2.uml.TypedElement;
/**
* Check whether an element within a package template is referenced via a type from the outside, i.e. an element that is not
* within this package template. This reference is only valid in the context of a template binding.
* (within Qompass, binding is done implicitly via stereotypes - which was perhaps not the best way of doing it)
*
* The rule has been made specific to Qompass by checking whether FCM is applied (check DerivedElement stereotype).
*
*/
public class TemplateRefWithoutBinding extends AbstractModelConstraint {
@Override
public IStatus validate(IValidationContext ctx)
{
TypedElement te = (TypedElement)ctx.getTarget();
Type type = te.getType();
if (type != null) {
Element owner = type.getNearestPackage();
while (owner != null) {
if (owner instanceof Package) {
Package pkg = (Package) owner;
if (TemplateUtils.getSignatureDirect(pkg) != null) {
if (StereotypeUtil.isApplicable(pkg, DerivedElement.class) && !isWithin(pkg, te)) {
// the type of an element is defined within a package template (pkg), but the typed element (te) itself
// is defined outside of this package
return ctx.createFailureStatus("This element is typed with '" + type.getQualifiedName() + "', but defined outside the package template '" + //$NON-NLS-1$ //$NON-NLS-2$
pkg.getQualifiedName() + "'"); //$NON-NLS-1$
}
}
}
owner = owner.getOwner();
}
}
return ctx.createSuccessStatus();
}
/**
* @param pkg A UML package
* @param e an element that is eventually part of the package
* @return if passed element is part of the given package
*/
public boolean isWithin(Package pkg, Element e) {
Element owner = e;
while (owner != null) {
owner = owner.getOwner();
if (owner == pkg) {
return true;
}
}
return false;
}
}
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