plugins/org.eclipse.viatra2.gtasm.patternmatcher.impl/src/org/eclipse/viatra2/gtasm/patternmatcher/impl/gtmatcher/internal/operation/CreateRelationConstant2Bound.java

/*******************************************************************************
 * Copyright (c) 2004-2008 Akos Horvath, Gergely Varro and Daniel Varro
 * 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:
 *    Akos Horvath, Gergely Varro - initial API and implementation
 *******************************************************************************/

 package org.eclipse.viatra2.gtasm.patternmatcher.impl.gtmatcher.internal.operation;

import org.eclipse.viatra2.core.IModelElement;
import org.eclipse.viatra2.core.IModelManager;
import org.eclipse.viatra2.errors.VPMCoreException;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.gtmatcher.exceptions.GTErrorStrings;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.gtmatcher.exceptions.GTOperationException;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.MatchingFrame;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.searchgraph.ConstantSearchGraphNode;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.core.AnnotatedElement;


/**
 * @author Akos Horvath
 *
 */
public class CreateRelationConstant2Bound extends CreateConstant2Bound {

	ConstantSearchGraphNode sourceNode;

	public CreateRelationConstant2Bound(ConstantSearchGraphNode s, int t
			 ,int variableI,IModelManager manager){
		super(manager,variableI);
		sourceNode = s;
		source = manager.getElementByName(s.getElement());
		target= t;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.viatra2.gtasm.patternmatcher.impl.gtmatcher.internal.operation.CreateElement#create(org.eclipse.viatra2.gtasm.patternmatcher.internal.MatchingFrame)
	 */
	@Override
	protected boolean create(MatchingFrame frame) throws GTOperationException {
		IModelElement targetElement = null;
		try {
            targetElement = (IModelElement) frame.getValue(target);
        } catch (ClassCastException e) {
        	String[] context = {frame.getPattern().getSearchGraph().getSearchNode(target).getName(), getClass().getSimpleName()};
			throw new GTOperationException(GTErrorStrings.NOT_A_MODELELEMENT
					,context
					,frame.getPattern().getSearchGraph().getSearchNode(target).getTraceabilityElement().getRepresentativeEMFElement());
        }
        if (source == null) {
        	String[] context = {sourceNode.getName(),getClass().getSimpleName()};
			throw new GTOperationException(GTErrorStrings.INTERNAL_EMPTY_VALUE
					,context
					,sourceNode.getTraceabilityElement().getRepresentativeEMFElement());

        }
        if (targetElement == null) {
        	String[] context = {frame.getPattern().getSearchGraph().getSearchNode(target).getName(),getClass().getSimpleName()};
			throw new GTOperationException(GTErrorStrings.INTERNAL_EMPTY_VALUE
					,context
					,frame.getPattern().getSearchGraph().getSearchNode(target).getTraceabilityElement().getRepresentativeEMFElement());
        }

		try {
			frame.setValue(variableIndex, manager.newRelation(source,targetElement));
		}catch (VPMCoreException e) {
			String[] context = {frame.getPattern().getSearchGraph().getSearchNode(variableIndex).getName(),e.getMessage()};
			throw new GTOperationException(GTErrorStrings.INTERNAL_CREATE_RELATION
					,context
					,frame.getPattern().getSearchGraph().getSearchNode(variableIndex).getTraceabilityElement().getRepresentativeEMFElement());

		}
		return true;
	}

	public String toString() {
		return getClass().getSimpleName() + " : " +
            source.getName() + " -- Relation:"+ variableIndex+" -> " + target;
	}

    @Override
	public AnnotatedElement getErrorfulElement(MatchingFrame frame){
    	return frame.getPattern().getSearchGraph().getSearchNode(variableIndex).getTraceabilityElement().getRepresentativeEMFElement();
    }

}