org.eclipse.viatra2.gtasm.patternmatcher.impl/src/org/eclipse/viatra2/gtasm/patternmatcher/impl/patternmatcher/internal/operation/IsEntityorRelationCheckOperation.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.patternmatcher.internal.operation;

import org.eclipse.viatra2.core.IModelElement;
import org.eclipse.viatra2.gtasm.patternmatcher.exceptions.PatternMatcherRuntimeException;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.gtmatcher.exceptions.GTErrorStrings;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.MatchingFrame;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.PatternMatcherErrorStrings;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.algorithms.ISearchGraph;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.searchgraph.SearchGraphEdge;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.core.AnnotatedElement;


/**
 * @author Akos Horvath
 *
 */
public class IsEntityorRelationCheckOperation extends CheckOperation {

	private Integer source;
	private SearchGraphEdge relatedSearchGraphEdge;
	private String type;
	
	/**
	 * 
	 */
	public IsEntityorRelationCheckOperation(Integer source, 
            SearchGraphEdge edge,
            String type) {
        this.source = source;
        this.relatedSearchGraphEdge = edge;
        this.type = type;
	}

	@Override
	protected boolean check(MatchingFrame frame)
			throws PatternMatcherRuntimeException {
		IModelElement sourceElement = null;
		try{
	           sourceElement = (IModelElement) frame.getValue(source);
	    }catch (ClassCastException e) {
	         	String[] context = {relatedSearchGraphEdge.getSourceNode().getName(), getClass().getSimpleName()};
				throw new PatternMatcherRuntimeException(GTErrorStrings.NOT_A_MODELELEMENT
						,context
						,relatedSearchGraphEdge.getSourceNode().getTraceabilityElement().getRepresentativeEMFElement());
	    }
	    
	    if (sourceElement == null) {
	    	String[] context = {relatedSearchGraphEdge.getSourceNode().getName(),getClass().getSimpleName()};
			throw new PatternMatcherRuntimeException(PatternMatcherErrorStrings.INTERNAL_EMPTY_VALUE
					,context
					,relatedSearchGraphEdge.getSourceNode().getTraceabilityElement().getRepresentativeEMFElement());
	    }
		
	    if(ISearchGraph.VPM_ENTITY_FQN.equals(type))
	    	return sourceElement.isEntity();
	    
	    if(ISearchGraph.VPM_RELATION_FQN.equals(type))
	    	return sourceElement.isRelation();
	    
		return false;
	}
	
	public String toString(){
		return getClass().getSimpleName() + " : " + 
        type+"-- " + relatedSearchGraphEdge.getVPMEdgeType().name() + "- CHECK -> " + source;
	}

	public AnnotatedElement getErrorfulElement(MatchingFrame frame) {
		return relatedSearchGraphEdge.getTraceabilityElement().getRepresentativeEMFElement();
	}

}