    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}