001 /** 002 * Copyright (c) 2010 Yahoo! Inc. All rights reserved. 003 * Licensed under the Apache License, Version 2.0 (the "License"); 004 * you may not use this file except in compliance with the License. 005 * You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software 010 * distributed under the License is distributed on an "AS IS" BASIS, 011 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 * See the License for the specific language governing permissions and 013 * limitations under the License. See accompanying LICENSE file. 014 */ 015 package org.apache.oozie.command.wf; 016 017 import org.apache.oozie.ErrorCode; 018 import org.apache.oozie.XException; 019 import org.apache.oozie.service.JPAService; 020 import org.apache.oozie.service.Services; 021 import org.apache.oozie.util.ParamChecker; 022 import org.apache.oozie.command.CommandException; 023 import org.apache.oozie.command.PreconditionException; 024 import org.apache.oozie.executor.jpa.WorkflowIdGetForExternalIdJPAExecutor; 025 026 public class ExternalIdXCommand extends WorkflowXCommand<String> { 027 private String externalId; 028 029 public ExternalIdXCommand(String externalId) { 030 super("externalId", "externalId", 1); 031 this.externalId = ParamChecker.notEmpty(externalId, "externalId"); 032 } 033 034 @Override 035 protected boolean isLockRequired() { 036 return false; 037 } 038 039 @Override 040 protected String getEntityKey() { 041 return this.externalId; 042 } 043 044 @Override 045 protected void loadState() throws CommandException { 046 } 047 048 @Override 049 protected void verifyPrecondition() throws CommandException, PreconditionException { 050 } 051 052 @Override 053 protected String execute() throws CommandException { 054 try { 055 JPAService jpaService = Services.get().get(JPAService.class); 056 String wfId = null; 057 if (jpaService != null) { 058 wfId = jpaService.execute(new WorkflowIdGetForExternalIdJPAExecutor(externalId)); 059 } 060 else { 061 LOG.error(ErrorCode.E0610); 062 } 063 return wfId; 064 } 065 catch (XException ex) { 066 throw new CommandException(ex); 067 } 068 } 069 070 }