/*
* Copyright 2005 Werner Guttmann
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.castor.jdo.jpa.processors.fieldprocessors;
import java.lang.annotation.Annotation;
import java.lang.reflect.AnnotatedElement;
import javax.persistence.Id;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.castor.core.nature.BaseNature;
import org.castor.jdo.jpa.natures.JPAFieldNature;
import org.castor.jdo.jpa.processors.BaseJPAAnnotationProcessor;
/**
* Processes the JPA annotation {@link Id}. After this processor is done, the
* annotated field will be treaded as an ID field and
* {@link JPAFieldNature#isId()} returns true.
*
* @author Martin Kandler
* @version 2008-12-08
*/
public class JPAIdProcessor extends BaseJPAAnnotationProcessor {
/**
* The <a href="http://jakarta.apache.org/commons/logging/">Jakarta Commons
* Logging</a> instance used for all logging.
*/
private static Log _log = LogFactory.getLog(JPAIdProcessor.class);
/**
* {@inheritDoc}
*
* @see org.castor.core.annotationprocessing.AnnotationProcessor#forAnnotationClass()
*/
public Class<? extends Annotation> forAnnotationClass() {
return Id.class;
}
/**
* {@inheritDoc}
*
* @see org.castor.core.annotationprocessing.TargetAwareAnnotationProcessor#
* processAnnotation(BaseNature, Annotation, AnnotatedElement)
*/
public <I extends BaseNature, A extends Annotation> boolean processAnnotation(
final I info, final A annotation, final AnnotatedElement target) {
if ((info instanceof JPAFieldNature) && (annotation instanceof Id)) {
_log.debug("processing field annotation " + annotation.toString());
JPAFieldNature jpaFieldNature = (JPAFieldNature) info;
jpaFieldNature.setId(true);
return true;
}
return false;
}
}