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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.cayenne.jpa.enhancer;
import org.apache.cayenne.enhancer.EmbeddableVisitor;
import org.apache.cayenne.enhancer.EnhancerVisitorFactory;
import org.apache.cayenne.enhancer.PojoVisitor;
import org.apache.cayenne.jpa.map.JpaEmbeddable;
import org.apache.cayenne.jpa.map.JpaEntity;
import org.apache.cayenne.jpa.map.JpaEntityMap;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.commons.SerialVersionUIDAdder;
/**
* EnhancerVisitorFactory implementation based on JPA mapping.
*
* @since 3.0
*/
public class JpaEnhancerVisitorFactory implements EnhancerVisitorFactory {
private JpaEntityMap entityMap;
public JpaEnhancerVisitorFactory(JpaEntityMap entityMap) {
this.entityMap = entityMap;
}
public ClassVisitor createVisitor(String className, ClassVisitor out) {
String key = className.replace('/', '.');
JpaEntity entity = entityMap.entityForClass(key);
if (entity != null) {
// create enhancer chain
PojoVisitor e1 = new JpaPojoVisitor(out, entity);
JpaAccessorVisitor e2 = new JpaAccessorVisitor(e1, entity);
// this ensures that both enhanced and original classes have compatible
// serialized format even if no serialVersionUID is defined by the user
SerialVersionUIDAdder e3 = new SerialVersionUIDAdder(e2);
return e3;
}
JpaEmbeddable embeddable = entityMap.embeddableForClass(key);
if (embeddable != null) {
// create enhancer chain
EmbeddableVisitor e1 = new EmbeddableVisitor(out);
// this ensures that both enhanced and original classes have compatible
// serialized
// format even if no serialVersionUID is defined by the user
SerialVersionUIDAdder e2 = new SerialVersionUIDAdder(e1);
return e2;
}
return null;
}
}