jpa/plugins/org.eclipse.jpt.jpa.core/src/org/eclipse/jpt/jpa/core/internal/resource/java/source/SourceOverrideAnnotation.java

/*******************************************************************************
 * Copyright (c) 2007, 2010 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.core.internal.resource.java.source;

import java.util.Map;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jpt.common.core.utility.TextRange;
import org.eclipse.jpt.common.core.utility.jdt.AnnotationAdapter;
import org.eclipse.jpt.common.core.utility.jdt.AnnotationElementAdapter;
import org.eclipse.jpt.common.core.utility.jdt.DeclarationAnnotationAdapter;
import org.eclipse.jpt.common.core.utility.jdt.DeclarationAnnotationElementAdapter;
import org.eclipse.jpt.common.core.utility.jdt.Member;
import org.eclipse.jpt.jpa.core.resource.java.JavaResourceNode;
import org.eclipse.jpt.jpa.core.resource.java.OverrideAnnotation;

/**
 * <ul>
 * <li><code>javax.persistence.AttributeOverride</code>
 * <li><code>javax.persistence.AssociationOverride</code>
 * </ul>
 */
abstract class SourceOverrideAnnotation
	extends SourceAnnotation<Member>  
	implements OverrideAnnotation
{		
	DeclarationAnnotationElementAdapter<String> nameDeclarationAdapter;
	AnnotationElementAdapter<String> nameAdapter;
	String name;
		

	SourceOverrideAnnotation(JavaResourceNode parent, Member member, DeclarationAnnotationAdapter daa, AnnotationAdapter annotationAdapter) {
		super(parent, member, daa, annotationAdapter);
		this.nameDeclarationAdapter = this.buildNameDeclarationAdapter();
		this.nameAdapter = this.buildNameAdapter();
	}

	public void initialize(CompilationUnit astRoot) {
		this.name = this.buildName(astRoot);
	}
	
	public void synchronizeWith(CompilationUnit astRoot) {
		this.syncName(this.buildName(astRoot));
	}
	

	// ********** OverrideAnnotation implementation **********

	// ***** name
	public String getName() {
		return this.name;
	}

	public void setName(String name) {
		if (this.attributeValueHasChanged(this.name, name)) {
			this.name = name;
			this.nameAdapter.setValue(name);
		}
	}

	private void syncName(String astName) {
		String old = this.name;
		this.name = astName;
		this.firePropertyChanged(NAME_PROPERTY, old, astName);
	}

	private String buildName(CompilationUnit astRoot) {
		return this.nameAdapter.getValue(astRoot);
	}

	public TextRange getNameTextRange(CompilationUnit astRoot) {
		return this.getElementTextRange(this.nameDeclarationAdapter, astRoot);
	}

	public boolean nameTouches(int pos, CompilationUnit astRoot) {
		return this.elementTouches(this.nameDeclarationAdapter, pos, astRoot);
	}

	private DeclarationAnnotationElementAdapter<String> buildNameDeclarationAdapter() {
		return this.buildStringElementAdapter(this.getNameElementName());
	}

	private AnnotationElementAdapter<String> buildNameAdapter() {
		return this.buildStringElementAdapter(this.nameDeclarationAdapter);
	}

	protected abstract String getNameElementName();


	// ********** NestableAnnotation implementation **********

	/**
	 * Convenience implementation of
	 * {@link org.eclipse.jpt.jpa.core.resource.java.NestableAnnotation#moveAnnotation(int)}
	 * used by subclasses.
	 */
	public void moveAnnotation(int index) {
		this.getIndexedAnnotationAdapter().moveAnnotation(index);
	}
	

	// ********** misc **********

	@Override
	public boolean isUnset() {
		return super.isUnset() &&
				(this.name == null);
	}

	@Override
	protected void rebuildAdapters() {
		super.rebuildAdapters();
		this.nameDeclarationAdapter = this.buildNameDeclarationAdapter();
		this.nameAdapter = this.buildNameAdapter();
	}

	@Override
	public void storeOn(Map<String, Object> map) {
		super.storeOn(map);
		map.put(NAME_PROPERTY, this.name);
		this.name = null;
	}

	@Override
	public void restoreFrom(Map<String, Object> map) {
		super.restoreFrom(map);
		this.setName((String) map.get(NAME_PROPERTY));
	}

	@Override
	public void toString(StringBuilder sb) {
		sb.append(this.name);
	}
}