/*******************************************************************************
 * Copyright (c) 2007, 2008 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.eclipselink.core.tests.internal.context.java;

import java.util.Iterator;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jpt.core.context.Converter;
import org.eclipse.jpt.core.context.PersistentAttribute;
import org.eclipse.jpt.core.context.TemporalConverter;
import org.eclipse.jpt.core.context.TemporalType;
import org.eclipse.jpt.core.context.VersionMapping;
import org.eclipse.jpt.core.resource.java.JPA;
import org.eclipse.jpt.core.resource.java.JavaResourcePersistentAttribute;
import org.eclipse.jpt.core.resource.java.JavaResourcePersistentType;
import org.eclipse.jpt.core.resource.java.TemporalAnnotation;
import org.eclipse.jpt.eclipselink.core.context.EclipseLinkConvert;
import org.eclipse.jpt.eclipselink.core.resource.java.ConvertAnnotation;
import org.eclipse.jpt.eclipselink.core.resource.java.EclipseLinkJPA;
import org.eclipse.jpt.utility.internal.iterators.ArrayIterator;

public class EclipseLinkJavaVersionMappingTests extends EclipseLinkJavaContextModelTestCase
{

	private void createConvertAnnotation() throws Exception{
		this.createAnnotationAndMembers(EclipseLinkJPA.PACKAGE, "Convert", "String value() default \"none\";");		
	}
	
	private ICompilationUnit createTestEntityWithVersionMapping() throws Exception {
		createConvertAnnotation();
		
		return this.createTestType(new DefaultAnnotationWriter() {
			@Override
			public Iterator<String> imports() {
				return new ArrayIterator<String>(JPA.ENTITY, JPA.VERSION);
			}
			@Override
			public void appendTypeAnnotationTo(StringBuilder sb) {
				sb.append("@Entity").append(CR);
			}
			
			@Override
			public void appendIdFieldAnnotationTo(StringBuilder sb) {
				sb.append("@Version").append(CR);
			}
		});
	}

	
	private ICompilationUnit createTestEntityWithConvert() throws Exception {
		createConvertAnnotation();
	
		return this.createTestType(new DefaultAnnotationWriter() {
			@Override
			public Iterator<String> imports() {
				return new ArrayIterator<String>(JPA.ENTITY, JPA.VERSION, EclipseLinkJPA.CONVERT);
			}
			@Override
			public void appendTypeAnnotationTo(StringBuilder sb) {
				sb.append("@Entity").append(CR);
			}
			
			@Override
			public void appendIdFieldAnnotationTo(StringBuilder sb) {
				sb.append("@Version").append(CR);
				sb.append("@Convert(\"class-instance\")").append(CR);
			}
		});
	}
		
	public EclipseLinkJavaVersionMappingTests(String name) {
		super(name);
	}

	public void testGetConvert() throws Exception {
		createTestEntityWithVersionMapping();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		
		JavaResourcePersistentType typeResource = jpaProject().getJavaResourcePersistentType(FULLY_QUALIFIED_TYPE_NAME);
		JavaResourcePersistentAttribute attributeResource = typeResource.attributes().next();
		attributeResource.addAnnotation(ConvertAnnotation.ANNOTATION_NAME);
		
		PersistentAttribute persistentAttribute = javaPersistentType().attributes().next();
		VersionMapping versionMapping = (VersionMapping) persistentAttribute.getSpecifiedMapping();

		assertEquals(EclipseLinkConvert.ECLIPSE_LINK_CONVERTER, versionMapping.getConverter().getType());
	}
	
	public void testGetConvert2() throws Exception {
		createTestEntityWithConvert();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		
		PersistentAttribute persistentAttribute = javaPersistentType().attributes().next();
		VersionMapping versionMapping = (VersionMapping) persistentAttribute.getMapping();

		assertEquals(EclipseLinkConvert.ECLIPSE_LINK_CONVERTER, versionMapping.getConverter().getType());
		assertEquals(EclipseLinkConvert.CLASS_INSTANCE_CONVERTER, ((EclipseLinkConvert) versionMapping.getConverter()).getConverterName());
	}

	public void testSetConvert() throws Exception {
		createTestEntityWithVersionMapping();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		
		PersistentAttribute persistentAttribute = javaPersistentType().attributes().next();
		VersionMapping versionMapping = (VersionMapping) persistentAttribute.getSpecifiedMapping();
		assertEquals(Converter.NO_CONVERTER, versionMapping.getConverter().getType());
		
		versionMapping.setSpecifiedConverter(Converter.TEMPORAL_CONVERTER);
		((TemporalConverter) versionMapping.getSpecifiedConverter()).setTemporalType(TemporalType.TIME);
		
		JavaResourcePersistentType typeResource = jpaProject().getJavaResourcePersistentType(FULLY_QUALIFIED_TYPE_NAME);
		JavaResourcePersistentAttribute attributeResource = typeResource.attributes().next();
		TemporalAnnotation temporal = (TemporalAnnotation) attributeResource.getAnnotation(TemporalAnnotation.ANNOTATION_NAME);
		
		assertEquals(org.eclipse.jpt.core.resource.java.TemporalType.TIME, temporal.getValue());
		
		versionMapping.setSpecifiedConverter(null);
		assertNull(attributeResource.getAnnotation(TemporalAnnotation.ANNOTATION_NAME));
	}
	
	public void testGetConvertUpdatesFromResourceModelChange() throws Exception {
		createTestEntityWithVersionMapping();
		addXmlClassRef(FULLY_QUALIFIED_TYPE_NAME);
		
		PersistentAttribute persistentAttribute = javaPersistentType().attributes().next();
		VersionMapping versionMapping = (VersionMapping) persistentAttribute.getSpecifiedMapping();

		assertEquals(Converter.NO_CONVERTER, versionMapping.getConverter().getType());
		
		
		JavaResourcePersistentType typeResource = jpaProject().getJavaResourcePersistentType(FULLY_QUALIFIED_TYPE_NAME);
		JavaResourcePersistentAttribute attributeResource = typeResource.attributes().next();
		ConvertAnnotation convert = (ConvertAnnotation) attributeResource.addAnnotation(ConvertAnnotation.ANNOTATION_NAME);
		convert.setValue("foo");
		
		assertEquals(EclipseLinkConvert.ECLIPSE_LINK_CONVERTER, versionMapping.getConverter().getType());
		assertEquals("foo", ((EclipseLinkConvert) versionMapping.getConverter()).getConverterName());
		
		attributeResource.removeAnnotation(ConvertAnnotation.ANNOTATION_NAME);
		
		assertEquals(Converter.NO_CONVERTER, versionMapping.getConverter().getType());
		assertFalse(versionMapping.isDefault());
		assertSame(versionMapping, persistentAttribute.getSpecifiedMapping());
	}
}