001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *      http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.oozie.executor.jpa;
020
021import java.util.List;
022
023import javax.persistence.EntityManager;
024import javax.persistence.Query;
025
026import org.apache.oozie.ErrorCode;
027import org.apache.oozie.WorkflowActionBean;
028import org.apache.oozie.util.ParamChecker;
029import org.apache.oozie.util.XLog;
030
031/**
032 * Load the WorkflowAction into a Bean and return it.
033 */
034public class WorkflowActionGetJPAExecutor implements JPAExecutor<WorkflowActionBean> {
035
036    private String wfActionId = null;
037
038    public WorkflowActionGetJPAExecutor(String wfActionId) {
039        ParamChecker.notNull(wfActionId, "wfActionId");
040        this.wfActionId = wfActionId;
041    }
042
043    /* (non-Javadoc)
044     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
045     */
046    @Override
047    public String getName() {
048        return "WorkflowActionGetJPAExecutor";
049    }
050
051    /* (non-Javadoc)
052     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
053     */
054    @Override
055    @SuppressWarnings("unchecked")
056    public WorkflowActionBean execute(EntityManager em) throws JPAExecutorException {
057        List<WorkflowActionBean> waBeans;
058        try {
059            Query q = em.createNamedQuery("GET_ACTION");
060            q.setParameter("id", wfActionId);
061            waBeans = q.getResultList();
062        }
063        catch (Exception e) {
064            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
065        }
066        WorkflowActionBean bean = null;
067        if (waBeans != null && waBeans.size() > 0) {
068            bean = waBeans.get(0);
069            return bean;
070        }
071        else {
072            throw new JPAExecutorException(ErrorCode.E0605, wfActionId);
073        }
074    }
075}