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 */
018package org.apache.oozie.executor.jpa;
019
020import java.util.List;
021
022import javax.persistence.EntityManager;
023import javax.persistence.Query;
024
025import org.apache.oozie.ErrorCode;
026import org.apache.oozie.WorkflowActionBean;
027import org.apache.oozie.util.ParamChecker;
028import org.apache.oozie.util.XLog;
029
030/**
031 * Load the WorkflowAction into a Bean and return it.
032 */
033public class WorkflowActionGetJPAExecutor implements JPAExecutor<WorkflowActionBean> {
034
035    private String wfActionId = null;
036
037    public WorkflowActionGetJPAExecutor(String wfActionId) {
038        ParamChecker.notNull(wfActionId, "wfActionId");
039        this.wfActionId = wfActionId;
040    }
041
042    /* (non-Javadoc)
043     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
044     */
045    @Override
046    public String getName() {
047        return "WorkflowActionGetJPAExecutor";
048    }
049
050    /* (non-Javadoc)
051     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
052     */
053    @Override
054    @SuppressWarnings("unchecked")
055    public WorkflowActionBean execute(EntityManager em) throws JPAExecutorException {
056        List<WorkflowActionBean> waBeans;
057        try {
058            Query q = em.createNamedQuery("GET_ACTION");
059            q.setParameter("id", wfActionId);
060            waBeans = q.getResultList();
061        }
062        catch (Exception e) {
063            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
064        }
065        WorkflowActionBean bean = null;
066        if (waBeans != null && waBeans.size() > 0) {
067            bean = waBeans.get(0);
068            return bean;
069        }
070        else {
071            throw new JPAExecutorException(ErrorCode.E0605, wfActionId);
072        }
073    }
074}