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* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.cmp.component.interceptors;
import javax.ejb.EJBException;
import org.jboss.as.cmp.component.CmpEntityBeanComponentInstance;
import org.jboss.as.cmp.context.CmpEntityBeanContext;
import org.jboss.as.cmp.jdbc.bridge.CMRMessage;
import org.jboss.as.cmp.jdbc.bridge.JDBCCMRFieldBridge;
import org.jboss.as.cmp.jdbc.bridge.JDBCEntityBridge;
import org.jboss.as.ee.component.ComponentInstance;
import org.jboss.invocation.Interceptor;
import org.jboss.invocation.InterceptorContext;
import org.jboss.invocation.InterceptorFactory;
import org.jboss.invocation.InterceptorFactoryContext;
import org.jboss.logging.Logger;
/**
* @author John Bailey
*/
public class CmpEntityBeanJdbcRelationshipInterceptor implements Interceptor {
private static final Logger log = Logger.getLogger(CmpEntityBeanJdbcRelationshipInterceptor.class);
private static final CmpEntityBeanJdbcRelationshipInterceptor INSTANCE = new CmpEntityBeanJdbcRelationshipInterceptor();
public Object processInvocation(InterceptorContext context) throws Exception {
CMRMessage relationshipMessage = context.getPrivateData(CMRMessage.class);
if (relationshipMessage == null) {
// Not a relationship message. Invoke down the chain
return context.proceed();
}
final CmpEntityBeanComponentInstance instance = (CmpEntityBeanComponentInstance) context.getPrivateData(ComponentInstance.class);
final CmpEntityBeanContext ctx = instance.getEjbContext();
// We are going to work with the context a lot
JDBCCMRFieldBridge cmrField = (JDBCCMRFieldBridge) context.getParameters()[0];
if (CMRMessage.GET_RELATED_ID == relationshipMessage) {
// call getRelateId
if (log.isTraceEnabled()) {
log.trace("Getting related id: field=" + cmrField.getFieldName() + " id=" + ctx.getPrimaryKey());
}
return cmrField.getRelatedId(ctx);
} else if (CMRMessage.ADD_RELATION == relationshipMessage) {
// call addRelation
Object relatedId = context.getParameters()[1];
if (log.isTraceEnabled()) {
log.trace("Add relation: field=" + cmrField.getFieldName() +
" id=" + ctx.getPrimaryKey() +
" relatedId=" + relatedId);
}
cmrField.addRelation(ctx, relatedId);
return null;
} else if (CMRMessage.REMOVE_RELATION == relationshipMessage) {
// call removeRelation
Object relatedId = context.getParameters()[1];
if (log.isTraceEnabled()) {
log.trace("Remove relation: field=" + cmrField.getFieldName() +
" id=" + ctx.getPrimaryKey() +
" relatedId=" + relatedId);
}
cmrField.removeRelation(ctx, relatedId);
return null;
} else if (CMRMessage.SCHEDULE_FOR_CASCADE_DELETE == relationshipMessage) {
JDBCEntityBridge entity = (JDBCEntityBridge) cmrField.getEntity();
entity.scheduleForCascadeDelete(ctx);
return null;
} else if (CMRMessage.SCHEDULE_FOR_BATCH_CASCADE_DELETE == relationshipMessage) {
JDBCEntityBridge entity = (JDBCEntityBridge) cmrField.getEntity();
entity.scheduleForBatchCascadeDelete(ctx);
return null;
} else {
// this should not be possible we are using a type safe enum
throw new EJBException("Unknown cmp2.0-relationship-message=" + relationshipMessage);
}
}
public static InterceptorFactory FACTORY = new InterceptorFactory() {
public Interceptor create(InterceptorFactoryContext context) {
return INSTANCE;
}
};
}