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/*******************************************************************************
* Copyright (c) 2006, 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.core.internal.context.java;
import org.eclipse.jpt.core.JpaFactory;
import org.eclipse.jpt.core.context.java.JavaPersistentType;
import org.eclipse.jpt.core.context.java.JavaTypeMapping;
import org.eclipse.jpt.core.context.java.JavaTypeMappingProvider;
/**
* This mapping provider implementation is used to create a JavaNullAttributeMapping.
* A JavaNullAttributeMapping should be used when no "mapping" annotation
* exists on a Java type.
*/
public class JavaNullTypeMappingProvider
implements JavaTypeMappingProvider
{
// singleton
private static final JavaNullTypeMappingProvider INSTANCE = new JavaNullTypeMappingProvider();
/**
* Return the singleton.
*/
public static JavaTypeMappingProvider instance() {
return INSTANCE;
}
/**
* Ensure non-instantiability.
*/
private JavaNullTypeMappingProvider() {
super();
}
public String getKey() {
return null;
}
public String getAnnotationName() {
return null;
}
public JavaTypeMapping buildMapping(JavaPersistentType parent, JpaFactory factory) {
return factory.buildJavaNullTypeMapping(parent);
}
}
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