/* Copyright 2004-2005 Graeme Rocher
 *
 * 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.codehaus.groovy.grails.commons;

import javax.persistence.Entity;
import java.util.HashSet;
import java.util.Set;

/**
 * Detects annotated domain classes for EJB3 style mappings
 *
 * @author Graeme Rocher
 * @since 1.0
 *        <p/>
 *        Created: Dec 6, 2007
 */
public class AnnotationDomainClassArtefactHandler extends DomainClassArtefactHandler{
    private static final String JPA_MAPPING_STRATEGY = "JPA";

    private Set<String> jpaClassNames = new HashSet<String>();

    public Set<String> getJpaClassNames() {
        return jpaClassNames;
    }

    public boolean isArtefactClass(Class clazz) {
        final boolean isJpaDomainClass = isJPADomainClass(clazz);
        if(isJpaDomainClass) {
             jpaClassNames.add(clazz.getName());
        }
        return super.isArtefactClass(clazz) ;
    }

    public static boolean isJPADomainClass(Class clazz){
        return clazz != null && clazz.getAnnotation(Entity.class) != null;
    }

    public GrailsClass newArtefactClass(Class artefactClass) {
        GrailsDomainClass grailsClass = (GrailsDomainClass) super.newArtefactClass(artefactClass);
        if(isJPADomainClass(artefactClass))
            grailsClass.setMappingStrategy(JPA_MAPPING_STRATEGY);        
        return grailsClass;
    }
}
