001/**
002 * Licensed under the Apache License, Version 2.0 (the "License");
003 * you may not use this file except in compliance with the License.
004 * You may obtain a copy of the License at
005 *
006 *     http://www.apache.org/licenses/LICENSE-2.0
007 *
008 * Unless required by applicable law or agreed to in writing, software
009 * distributed under the License is distributed on an "AS IS" BASIS,
010 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
011 * See the License for the specific language governing permissions and
012 * limitations under the License.
013 */
014package org.apache.tapestry5.jpa;
015
016import org.apache.tapestry5.ioc.Invokable;
017
018public interface EntityTransactionManager
019{
020
021    void runInTransaction(String unitName, Runnable runnable);
022
023    <T> T invokeInTransaction(String unitName, Invokable<T> invokable);
024
025    void invokeBeforeCommit(String unitName, Invokable<Boolean> invokable);
026
027    void invokeAfterCommit(String unitName, Invokable<Boolean> invokable);
028
029    @SuppressWarnings("rawtypes")
030    public static class VoidInvokable implements Invokable
031    {
032        private final Runnable runnable;
033
034        public VoidInvokable(Runnable runnable)
035        {
036            this.runnable = runnable;
037        }
038
039        @Override
040        public Object invoke()
041        {
042            runnable.run();
043            return null;
044        }
045
046    }
047}