/*******************************************************************************
 * 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.IEntity;
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.VariableSearchGraphNode;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.core.AnnotatedElement;


/**
 * @author Akos Horvath
 *
 */
public class CreateEntityWithVariableContainment extends CreateEntity{
	
	VariableSearchGraphNode container;
	/**
	 * @param variableIndex
	 * @param manager
	 */
	public CreateEntityWithVariableContainment(int variableI, IModelManager manager, VariableSearchGraphNode con) {
		super(variableI, manager);
		this.container = con;
	}

	protected boolean create(MatchingFrame frame) throws GTOperationException{
		IEntity tempContainer =null;
		
		try{
			tempContainer = (IEntity)frame.getValue(container.getId());
		} catch(ClassCastException e){
			String[] context = {container.getName(), getClass().getSimpleName()};
			throw new GTOperationException(GTErrorStrings.NOT_AN_ENTITY
					,context
					,container.getTraceabilityElement().getRepresentativeEMFElement());
		}	
		
		if(tempContainer == null)
			{
			String[] context = {container.getName(),getClass().getSimpleName()};
			throw new GTOperationException(GTErrorStrings.INTERNAL_EMPTY_VALUE
					,context
					,container.getTraceabilityElement().getRepresentativeEMFElement());
			}
		
		try {
			frame.setValue(variableIndex, manager.newEntity(tempContainer));
		} catch (VPMCoreException e) {
			String context[] = {frame.getPattern().getSearchGraph().getSearchNode(variableIndex).getName(),e.getMessage()};
			throw new GTOperationException(GTErrorStrings.INTERNAL_CREATE_ENTITY
					,context
					,frame.getPattern().getSearchGraph().getSearchNode(variableIndex).getTraceabilityElement().getRepresentativeEMFElement());
		} 

		return true;
	}
	
	public String toString() {
			return getClass().getSimpleName() + " : " + 
	            variableIndex+" in "+container;
	}

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