/*
 * JBoss, Home of Professional Open Source.
 *
 * See the LEGAL.txt file distributed with this work for information regarding copyright ownership and licensing.
 *
 * See the AUTHORS.txt file distributed with this work for a full listing of individual contributors.
 */
package org.teiid.designer.core.compare;

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EReference;
import org.teiid.designer.metamodels.core.CorePackage;

/**
 * CoreMatcherFactory
 *
 * @since 8.0
 */
public class CoreMatcherFactory implements EObjectMatcherFactory {

    /**
     * Construct an instance of CoreMatcherFactory.
     * 
     */
    public CoreMatcherFactory() {
        super();
    }

    /**
     * @see org.teiid.designer.core.compare.EObjectMatcherFactory#createEObjectMatchersForRoots()
     */
    @Override
	public List createEObjectMatchersForRoots() {
        // Create the appropriate matchers ...
        final List results = new LinkedList();
        results.add( new CoreRootObjectMatcher() );
        return results;
    }

    /**
     * @see org.teiid.designer.core.compare.EObjectMatcherFactory#createEObjectMatchers(org.eclipse.emf.ecore.EReference)
     */
    @Override
	public List createEObjectMatchers(final EReference reference) {
        // Make sure the reference is in the Core metamodel ...
        final EClass containingClass = reference.getEContainingClass();
        final EPackage metamodel = containingClass.getEPackage();
        if ( !CorePackage.eINSTANCE.equals(metamodel) ) {
            return Collections.EMPTY_LIST;
        }
        
        // Create the appropriate matchers ...
        final List results = new LinkedList();
        final int featureId = reference.getFeatureID();
        switch( featureId ) {
            case CorePackage.ANNOTATION_CONTAINER__ANNOTATIONS:
                results.add( new CoreAnnotationMatcher() );
                break;
            case CorePackage.MODEL_ANNOTATION__MODEL_IMPORTS:
                results.add( new CoreModelImportMatcher() );
        }
        
        return results;
    }

}