/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, 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.aspects.tx;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.lang.reflect.Field;
import java.util.HashMap;
import org.jboss.aop.Advisor;
import org.jboss.aop.InstanceAdvisor;
import org.jboss.aop.joinpoint.ConstructorJoinpoint;
import org.jboss.aop.joinpoint.Joinpoint;
import org.jboss.aop.joinpoint.MethodJoinpoint;
import org.jboss.aop.joinpoint.FieldJoinpoint;
import org.jboss.tm.TransactionManagerLocator;
/**
* This interceptor handles transactions for AOP
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 57186 $
*/
public class TxInterceptorFactory implements org.jboss.aop.advice.AspectFactory
{
protected TxPolicy policy;
protected HashMap nameMap = new HashMap();
protected void initializePolicy()
{
policy = new TxPolicy();
}
public void initialize()
{
if (policy != null) return;
initializePolicy();
nameMap.put("NEVER", new TxInterceptor.Never(TransactionManagerLocator.getInstance().locate(), policy));
nameMap.put("NOTSUPPORTED", new TxInterceptor.NotSupported(TransactionManagerLocator.getInstance().locate(), policy));
nameMap.put("SUPPORTS", new TxInterceptor.Supports(TransactionManagerLocator.getInstance().locate(), policy));
nameMap.put("REQUIRED", new TxInterceptor.Required(TransactionManagerLocator.getInstance().locate(), policy));
nameMap.put("REQUIRESNEW", new TxInterceptor.RequiresNew(TransactionManagerLocator.getInstance().locate(), policy));
nameMap.put("MANDATORY", new TxInterceptor.Mandatory(TransactionManagerLocator.getInstance().locate(), policy));
}
protected String resolveTxType(Advisor advisor, Joinpoint jp)
{
if (jp instanceof ConstructorJoinpoint)
{
Constructor con = ((ConstructorJoinpoint)jp).getConstructor();
String txType = (String)advisor.getConstructorMetaData().getConstructorMetaData(con, "transaction", "trans-attribute");
if (txType != null) return txType;
txType = (String)advisor.getDefaultMetaData().getMetaData("transaction", "trans-attribute");
if (txType != null) return txType;
Tx tx = (Tx)advisor.resolveAnnotation(con, Tx.class);
if (tx == null)
{
tx = (Tx)advisor.resolveAnnotation(Tx.class);
}
if (tx == null) return "REQUIRED";
return tx.value().name();
}
else if (jp instanceof MethodJoinpoint)
{
Method con = ((MethodJoinpoint)jp).getMethod();
String txType = (String)advisor.getMethodMetaData().getMethodMetaData(con, "transaction", "trans-attribute");
if (txType != null) return txType;
txType = (String)advisor.getDefaultMetaData().getMetaData("transaction", "trans-attribute");
if (txType != null) return txType;
Tx tx = (Tx)advisor.resolveAnnotation(con, Tx.class);
if (tx == null)
{
tx = (Tx)advisor.resolveAnnotation(Tx.class);
}
if (tx == null) return "REQUIRED";
return tx.value().name();
}
else
{
Field con = ((FieldJoinpoint)jp).getField();
String txType = (String)advisor.getFieldMetaData().getFieldMetaData(con, "transaction", "trans-attribute");
if (txType != null) return txType;
txType = (String)advisor.getDefaultMetaData().getMetaData("transaction", "trans-attribute");
if (txType != null) return txType;
Tx tx = (Tx)advisor.resolveAnnotation(con, Tx.class);
if (tx == null)
{
tx = (Tx)advisor.resolveAnnotation(Tx.class);
}
if (tx == null) return "REQUIRED";
return tx.value().name();
}
}
public Object createPerJoinpoint(Advisor advisor, Joinpoint jp)
{
initialize();
String txType = resolveTxType(advisor, jp);
Object rtn = nameMap.get(txType.toUpperCase());
if (rtn == null) throw new RuntimeException("TX TYPE was null for: " + txType);
return rtn;
}
public Object createPerVM()
{
throw new IllegalStateException("Scope not allowed");
}
public Object createPerClass(Advisor advisor)
{
throw new IllegalStateException("Scope not allowed");
}
public Object createPerInstance(Advisor advisor, InstanceAdvisor instanceAdvisor)
{
throw new IllegalStateException("Scope not allowed");
}
public Object createPerJoinpoint(Advisor advisor, InstanceAdvisor instanceAdvisor, Joinpoint jp)
{
throw new IllegalStateException("Scope not allowed");
}
public String getName()
{
return getClass().getName();
}
}
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