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.util.ParamChecker; 027 028/** 029 * Get the Workflow ID with given external ID which will be assigned for the subworkflows. 030 */ 031public class WorkflowIdGetForExternalIdJPAExecutor implements JPAExecutor<String> { 032 033 private String externalId = null; 034 035 public WorkflowIdGetForExternalIdJPAExecutor(String externalId) { 036 ParamChecker.notNull(externalId, "externalId"); 037 this.externalId = externalId; 038 } 039 040 /* (non-Javadoc) 041 * @see org.apache.oozie.executor.jpa.JPAExecutor#getName() 042 */ 043 @Override 044 public String getName() { 045 return "WorkflowIdGetForExternalIdJPAExecutor"; 046 } 047 048 /* (non-Javadoc) 049 * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager) 050 */ 051 @Override 052 @SuppressWarnings("unchecked") 053 public String execute(EntityManager em) throws JPAExecutorException { 054 String id = ""; 055 Query q = em.createNamedQuery("GET_WORKFLOW_ID_FOR_EXTERNAL_ID"); 056 q.setParameter("externalId", externalId); 057 List<String> w = q.getResultList(); 058 if (w.size() > 0) { 059 int index = w.size() - 1; 060 id = w.get(index); 061 } 062 return id; 063 } 064}