/*
 * 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.LinkedList;
import java.util.List;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EcorePackage;

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

    private final EObjectMatcher eAnnotationMatcher                 = new EAnnotationMatcher();
    private final EObjectMatcher eNamedElementMatcher               = new ENamedElementMatcher();

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

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

    /**
     * @see org.teiid.designer.core.compare.EObjectMatcherFactory#createEObjectMatchers(org.eclipse.emf.ecore.EReference)
     */
    @Override
	public List createEObjectMatchers(final EReference reference) {
        // Check to see whether the reference has a type that is EStringToStringMapEntry
        
        // Create the appropriate matchers ...
        final List results = new LinkedList();
        final EClassifier refType = reference.getEType();
        if ( EcorePackage.eINSTANCE.getEStringToStringMapEntry().equals(refType) ) {
            results.add( new EcoreEStringToStringMapEntryMatcher() );
        }
        if ( refType instanceof EClass ) {
            final EClass eClass = (EClass)refType;
            if ( EcorePackage.eINSTANCE.getEAnnotation().equals(refType) || eClass.isSuperTypeOf(EcorePackage.eINSTANCE.getEAnnotation())  ) {
                results.add(eAnnotationMatcher);
            }
            if ( EcorePackage.eINSTANCE.getEPackage().equals(refType) || eClass.isSuperTypeOf(EcorePackage.eINSTANCE.getEPackage())  ) {
                results.add(eNamedElementMatcher);
            }
            if ( EcorePackage.eINSTANCE.getEAttribute().equals(refType) || eClass.isSuperTypeOf(EcorePackage.eINSTANCE.getEAttribute())  ) {
                results.add(eNamedElementMatcher);
            }
            if ( EcorePackage.eINSTANCE.getEClass().equals(refType) || eClass.isSuperTypeOf(EcorePackage.eINSTANCE.getEClass())  ) {
                results.add(eNamedElementMatcher);
            }
            if ( EcorePackage.eINSTANCE.getENamedElement().equals(refType) || EcorePackage.eINSTANCE.getEClass().isSuperTypeOf(eClass) ) {
                results.add(eNamedElementMatcher);
            }
        }

        if ( EcorePackage.eINSTANCE.getEAnnotation_Contents().equals(reference) ) {
            results.add(new EAnnotationContentsMatcher());
        }

        return results;
    }

}