/*******************************************************************************
 * Copyright (c) 2009, 2012 Oracle. 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:
 *     Oracle - initial API and implementation
 ******************************************************************************/
package org.eclipse.jpt.jpa.eclipselink.core.tests.internal.context.java;

import java.util.Iterator;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jpt.common.core.resource.java.JavaResourceField;
import org.eclipse.jpt.common.core.resource.java.JavaResourceType;
import org.eclipse.jpt.common.core.resource.java.JavaResourceAnnotatedElement.Kind;
import org.eclipse.jpt.common.utility.internal.iterators.ArrayIterator;
import org.eclipse.jpt.jpa.core.MappingKeys;
import org.eclipse.jpt.jpa.core.context.PersistentAttribute;
import org.eclipse.jpt.jpa.core.context.java.JavaPersistentAttribute;
import org.eclipse.jpt.jpa.core.context.java.JavaPersistentType;
import org.eclipse.jpt.jpa.core.context.orm.OrmPersistentType;
import org.eclipse.jpt.jpa.core.context.orm.OrmReadOnlyPersistentAttribute;
import org.eclipse.jpt.jpa.core.jpa2.context.ManyToOneMapping2_0;
import org.eclipse.jpt.jpa.core.jpa2.context.ManyToOneRelationship2_0;
import org.eclipse.jpt.jpa.core.jpa2.context.java.JavaManyToOneMapping2_0;
import org.eclipse.jpt.jpa.core.jpa2.context.java.JavaOneToOneMapping2_0;
import org.eclipse.jpt.jpa.core.jpa2.resource.java.JPA2_0;
import org.eclipse.jpt.jpa.core.jpa2.resource.java.MapsId2_0Annotation;
import org.eclipse.jpt.jpa.core.resource.java.JPA;
import org.eclipse.jpt.jpa.eclipselink.core.tests.internal.context.EclipseLink2_0ContextModelTestCase;

@SuppressWarnings("nls")
public class EclipseLink2_0JavaManyToOneMappingTests
	extends EclipseLink2_0ContextModelTestCase
{
	public EclipseLink2_0JavaManyToOneMappingTests(String name) {
		super(name);
	}
	
	
	private void createTestEntity() throws Exception {
		createTestType(new DefaultAnnotationWriter() {
			@Override
			public Iterator<String> imports() {
				return new ArrayIterator<String>(JPA.ENTITY, JPA.MANY_TO_ONE);
			}
			
			@Override
			public void appendTypeAnnotationTo(StringBuilder sb) {
				sb.append("@Entity");
				sb.append(CR);
			}
			
			@Override
			public void appendIdFieldAnnotationTo(StringBuilder sb) {
				sb.append(CR);
				sb.append("    @ManyToOne");
				sb.append(CR);
				sb.append("    private Address address;");
				sb.append(CR);
				sb.append(CR);
				sb.append("    @Id");			
			}
		});
	}
	
	private ICompilationUnit createTestEntityWithIdDerivedIdentity() throws Exception {
		return this.createTestType(new DefaultAnnotationWriter() {
			@Override
			public Iterator<String> imports() {
				return new ArrayIterator<String>(JPA.ENTITY, JPA.MANY_TO_ONE, JPA.ID);
			}
			@Override
			public void appendTypeAnnotationTo(StringBuilder sb) {
				sb.append("@Entity").append(CR);
			}
			
			@Override
			public void appendIdFieldAnnotationTo(StringBuilder sb) {
				sb.append(CR);
				sb.append("    @ManyToOne @Id").append(CR);				
				sb.append("    private " + TYPE_NAME + " manyToOne;").append(CR);
				sb.append(CR);				
			}
		});
	}
	
	private void createTestEntityWithMapsIdDerivedIdentity() throws Exception {
		createTestType(new DefaultAnnotationWriter() {
			@Override
			public Iterator<String> imports() {
				return new ArrayIterator<String>(JPA.ENTITY, JPA.MANY_TO_ONE, JPA2_0.MAPS_ID);
			}
			@Override
			public void appendTypeAnnotationTo(StringBuilder sb) {
				sb.append("@Entity").append(CR);
			}
			
			@Override
			public void appendIdFieldAnnotationTo(StringBuilder sb) {
				sb.append(CR);
				sb.append("    @ManyToOne @MapsId").append(CR);				
				sb.append("    private " + TYPE_NAME + " manyToOne;").append(CR);
				sb.append(CR);				
			}
		});
		OrmPersistentType ormPersistentType = getEntityMappings().addPersistentType(MappingKeys.ENTITY_TYPE_MAPPING_KEY, FULLY_QUALIFIED_TYPE_NAME);
		for (OrmReadOnlyPersistentAttribute each : ormPersistentType.getAttributes()) {
			each.addToXml();
		}
	}
	
	public void testUpdateDerivedId() throws Exception {
		createTestEntityWithIdDerivedIdentity();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		JavaResourceType resourceType = (JavaResourceType) getJpaProject().getJavaResourceType(FULLY_QUALIFIED_TYPE_NAME, Kind.TYPE);
		JavaResourceField resourceField = resourceType.getFields().iterator().next();
		JavaPersistentType contextType = getJavaPersistentType();
		JavaPersistentAttribute contextAttribute = contextType.getAttributeNamed("manyToOne");
		JavaManyToOneMapping2_0 contextMapping = (JavaManyToOneMapping2_0) contextAttribute.getMapping();
		
		assertNotNull(resourceField.getAnnotation(JPA.ID));
		assertTrue(contextMapping.getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
		
		resourceField.removeAnnotation(JPA.ID);
		getJpaProject().synchronizeContextModel();
		assertNull(resourceField.getAnnotation(JPA.ID));
		assertFalse(contextMapping.getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
		
		resourceField.addAnnotation(JPA.ID);
		getJpaProject().synchronizeContextModel();
		assertNotNull(resourceField.getAnnotation(JPA.ID));
		assertTrue(contextMapping.getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
	}
	
	public void testSetDerivedId() throws Exception {
		createTestEntityWithIdDerivedIdentity();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		JavaResourceType resourceType = (JavaResourceType) getJpaProject().getJavaResourceType(FULLY_QUALIFIED_TYPE_NAME, Kind.TYPE);
		JavaResourceField resourceField = resourceType.getFields().iterator().next();
		JavaPersistentType contextType = getJavaPersistentType();
		JavaPersistentAttribute contextAttribute = contextType.getAttributeNamed("manyToOne");
		JavaManyToOneMapping2_0 contextMapping = (JavaManyToOneMapping2_0) contextAttribute.getMapping();
		
		assertNotNull(resourceField.getAnnotation(JPA.ID));
		assertTrue(contextMapping.getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
		
		contextMapping.getDerivedIdentity().getIdDerivedIdentityStrategy().setValue(false);
		assertNull(resourceField.getAnnotation(JPA.ID));
		assertFalse(contextMapping.getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
		
		contextMapping.getDerivedIdentity().getIdDerivedIdentityStrategy().setValue(true);
		assertNotNull(resourceField.getAnnotation(JPA.ID));
		assertTrue(contextMapping.getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
	}
	
	public void testUpdateMapsId() throws Exception {
		createTestEntityWithMapsIdDerivedIdentity();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		JavaResourceType resourceType = (JavaResourceType) getJpaProject().getJavaResourceType(FULLY_QUALIFIED_TYPE_NAME, Kind.TYPE);
		JavaResourceField resourceField = resourceType.getFields().iterator().next();
		JavaPersistentType contextType = getJavaPersistentType();
		JavaPersistentAttribute contextAttribute = contextType.getAttributeNamed("manyToOne");
		JavaManyToOneMapping2_0 contextMapping = (JavaManyToOneMapping2_0) contextAttribute.getMapping();
		
		MapsId2_0Annotation annotation = 
				(MapsId2_0Annotation) resourceField.getAnnotation(JPA2_0.MAPS_ID);
		annotation.setValue("foo");
		getJpaProject().synchronizeContextModel();
		assertEquals("foo", annotation.getValue());
		assertEquals("foo", contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
		
		annotation.setValue("bar");
		getJpaProject().synchronizeContextModel();
		assertEquals("bar", annotation.getValue());
		assertEquals("bar", contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
		
		resourceField.removeAnnotation(JPA2_0.MAPS_ID);
		getJpaProject().synchronizeContextModel();
		assertNull(resourceField.getAnnotation(JPA2_0.MAPS_ID));
		assertNull(contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
	}
	
	public void testSetMapsId() throws Exception {
		createTestEntity();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		JavaResourceType resourceType = (JavaResourceType) getJpaProject().getJavaResourceType(FULLY_QUALIFIED_TYPE_NAME, Kind.TYPE);
		JavaResourceField resourceField = resourceType.getFields().iterator().next();
		JavaPersistentType contextType = getJavaPersistentType();
		JavaPersistentAttribute contextAttribute = contextType.getAttributeNamed("address");
		JavaManyToOneMapping2_0 contextMapping = (JavaManyToOneMapping2_0) contextAttribute.getMapping();
		
		assertNull(resourceField.getAnnotation(JPA2_0.MAPS_ID));
		assertNull(contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
		
		contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().setSpecifiedIdAttributeName("foo");
		MapsId2_0Annotation annotation = 
				(MapsId2_0Annotation) resourceField.getAnnotation(JPA2_0.MAPS_ID);
		assertNotNull(annotation);
		assertEquals("foo", annotation.getValue());
		assertEquals("foo", contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
		
		contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().setSpecifiedIdAttributeName("bar");
		assertEquals("bar", annotation.getValue());
		assertEquals("bar", contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
		
		contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().setSpecifiedIdAttributeName(null);
		assertNotNull(resourceField.getAnnotation(JPA2_0.MAPS_ID));
		assertNull(contextMapping.getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
	}
	
	public void testMorphMapping() throws Exception {
		createTestEntityWithMapsIdDerivedIdentity();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		JavaResourceType resourceType = (JavaResourceType) getJpaProject().getJavaResourceType(FULLY_QUALIFIED_TYPE_NAME, Kind.TYPE);
		JavaResourceField resourceField = resourceType.getFields().iterator().next();
		JavaPersistentType contextType = getJavaPersistentType();
		JavaPersistentAttribute contextAttribute = contextType.getAttributeNamed("manyToOne");
		
		((MapsId2_0Annotation) resourceField.getAnnotation(JPA2_0.MAPS_ID)).setValue("foo");
		getJpaProject().synchronizeContextModel();
		
		assertNull(resourceField.getAnnotation(JPA.ID));
		assertFalse(((JavaManyToOneMapping2_0) contextAttribute.getMapping()).
				getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
		assertNotNull(resourceField.getAnnotation(JPA2_0.MAPS_ID));
		assertEquals("foo", ((MapsId2_0Annotation) resourceField.getAnnotation(JPA2_0.MAPS_ID)).getValue());
		assertEquals("foo", ((JavaManyToOneMapping2_0) contextAttribute.getMapping()).
				getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
		
		contextAttribute.setMappingKey(MappingKeys.ONE_TO_ONE_ATTRIBUTE_MAPPING_KEY);
		assertFalse(((JavaOneToOneMapping2_0) contextAttribute.getMapping()).
				getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
		assertNotNull(resourceField.getAnnotation(JPA2_0.MAPS_ID));
		assertEquals("foo", ((MapsId2_0Annotation) resourceField.getAnnotation(JPA2_0.MAPS_ID)).getValue());
		assertEquals("foo", ((JavaOneToOneMapping2_0) contextAttribute.getMapping()).
				getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
		
		contextAttribute.setMappingKey(MappingKeys.MANY_TO_ONE_ATTRIBUTE_MAPPING_KEY);
		assertFalse(((JavaManyToOneMapping2_0) contextAttribute.getMapping()).
				getDerivedIdentity().getIdDerivedIdentityStrategy().getValue());
		assertNotNull(resourceField.getAnnotation(JPA2_0.MAPS_ID));
		assertEquals("foo", ((MapsId2_0Annotation) resourceField.getAnnotation(JPA2_0.MAPS_ID)).getValue());
		assertEquals("foo", ((JavaManyToOneMapping2_0) contextAttribute.getMapping()).
				getDerivedIdentity().getMapsIdDerivedIdentityStrategy().getSpecifiedIdAttributeName());
	}

	public void testModifyPredominantJoiningStrategy() throws Exception {
		createTestEntity();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);

		JavaResourceType resourceType = (JavaResourceType) getJpaProject().getJavaResourceType(FULLY_QUALIFIED_TYPE_NAME, Kind.TYPE);
		JavaResourceField resourceField = resourceType.getFields().iterator().next();
		PersistentAttribute contextAttribute = getJavaPersistentType().getAttributes().iterator().next();
		ManyToOneMapping2_0 mapping = (ManyToOneMapping2_0) contextAttribute.getMapping();
		ManyToOneRelationship2_0 rel = (ManyToOneRelationship2_0) mapping.getRelationship();

		assertNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertTrue(rel.strategyIsJoinColumn());
		assertFalse(rel.strategyIsJoinTable());

		rel.setStrategyToJoinColumn();
		assertNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertTrue(rel.strategyIsJoinColumn());
		assertFalse(rel.strategyIsJoinTable());

		rel.setStrategyToJoinTable();
		assertNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNotNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertFalse(rel.strategyIsJoinColumn());
		assertTrue(rel.strategyIsJoinTable());

		rel.setStrategyToJoinColumn();
		assertNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertTrue(rel.strategyIsJoinColumn());
		assertFalse(rel.strategyIsJoinTable());
	}

	public void testUpdatePredominantJoiningStrategy() throws Exception {
		createTestEntity();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);

		JavaResourceType resourceType = (JavaResourceType) getJpaProject().getJavaResourceType(FULLY_QUALIFIED_TYPE_NAME, Kind.TYPE);
		JavaResourceField resourceField = resourceType.getFields().iterator().next();
		PersistentAttribute contextAttribute = getJavaPersistentType().getAttributes().iterator().next();
		ManyToOneMapping2_0 mapping = (ManyToOneMapping2_0) contextAttribute.getMapping();
		ManyToOneRelationship2_0 rel = (ManyToOneRelationship2_0) mapping.getRelationship();

		assertNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertTrue(rel.strategyIsJoinColumn());
		assertFalse(rel.strategyIsJoinTable());

		resourceField.addAnnotation(0, JPA.JOIN_COLUMN);
		getJpaProject().synchronizeContextModel();
		assertNotNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertTrue(rel.strategyIsJoinColumn());
		assertFalse(rel.strategyIsJoinTable());

		resourceField.addAnnotation(JPA.JOIN_TABLE);
		getJpaProject().synchronizeContextModel();
		assertNotNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNotNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertFalse(rel.strategyIsJoinColumn());
		assertTrue(rel.strategyIsJoinTable());

		resourceField.removeAnnotation(0, JPA.JOIN_COLUMN);
		getJpaProject().synchronizeContextModel();
		assertNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNotNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertFalse(rel.strategyIsJoinColumn());
		assertTrue(rel.strategyIsJoinTable());

		resourceField.removeAnnotation(JPA.JOIN_TABLE);
		getJpaProject().synchronizeContextModel();
		assertNull(resourceField.getAnnotation(0, JPA.JOIN_COLUMN));
		assertNull(resourceField.getAnnotation(JPA.JOIN_TABLE));
		assertTrue(rel.strategyIsJoinColumn());
		assertFalse(rel.strategyIsJoinTable());
	}
}