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* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt 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.infinispan.interceptors;
import org.infinispan.batch.BatchContainer;
import org.infinispan.commands.VisitableCommand;
import org.infinispan.context.InvocationContext;
import org.infinispan.context.InvocationContextContainer;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.interceptors.base.CommandInterceptor;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
/**
* Interceptor that captures batched calls and attaches contexts.
*
* @author Manik Surtani (<a href="mailto:manik@jboss.org">manik@jboss.org</a>)
* @since 4.0
*/
public class BatchingInterceptor extends CommandInterceptor {
BatchContainer batchContainer;
TransactionManager transactionManager;
InvocationContextContainer icc;
private static final Log log = LogFactory.getLog(BatchingInterceptor.class);
@Override
protected Log getLog() {
return log;
}
@Inject
private void inject(BatchContainer batchContainer, TransactionManager transactionManager, InvocationContextContainer icc) {
this.batchContainer = batchContainer;
this.transactionManager = transactionManager;
this.icc = icc;
}
/**
* Simply check if there is an ongoing tx. <ul> <li>If there is one, this is a no-op and just passes the call up the
* chain.</li> <li>If there isn't one and there is a batch in progress, resume the batch's tx, pass up, and finally
* suspend the batch's tx.</li> <li>If there is no batch in progress, just pass the call up the chain.</li> </ul>
*/
@Override
protected Object handleDefault(InvocationContext ctx, VisitableCommand command) throws Throwable {
Transaction tx;
if (!ctx.isOriginLocal()) return invokeNextInterceptor(ctx, command);
// if in a batch, attach tx
if (transactionManager.getTransaction() == null && (tx = batchContainer.getBatchTransaction()) != null) {
try {
transactionManager.resume(tx);
//If there's no ongoing tx then BatchingInterceptor creates one and then invokes next interceptor,
// so that all interceptors in the stack will be executed in a transactional context.
// This is where a new context (TxInvocationContext) is created, as the existing context is not transactional: NonTxInvocationContext.
InvocationContext txContext = icc.createInvocationContext(true, -1);
txContext.setFlags(ctx.getFlags());
return invokeNextInterceptor(txContext, command);
} finally {
if (transactionManager.getTransaction() != null && batchContainer.isSuspendTxAfterInvocation())
transactionManager.suspend();
}
} else {
return invokeNextInterceptor(ctx, command);
}
}
}