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 package org.apache.oozie.command.coord; 019 020 import java.util.List; 021 022 import org.apache.oozie.ErrorCode; 023 import org.apache.oozie.SLAEventBean; 024 import org.apache.oozie.XException; 025 import org.apache.oozie.command.CommandException; 026 import org.apache.oozie.command.PreconditionException; 027 import org.apache.oozie.command.XCommand; 028 import org.apache.oozie.executor.jpa.SLAEventsGetForSeqIdJPAExecutor; 029 import org.apache.oozie.service.JPAService; 030 import org.apache.oozie.service.Services; 031 032 /** 033 * The command to get a list of SLAEvents which are greater than given seqId. 034 * 035 */ 036 public class SLAEventsXCommand extends XCommand<List<SLAEventBean>> { 037 038 private long seqId = 0; 039 private int maxNoEvents = 100; // Default 040 private long lastSeqId = -1; 041 042 public SLAEventsXCommand(long seqId, int maxNoEvnts) { 043 super("SLAEventsXCommand", "SLAEventsXCommand", 1); 044 this.seqId = seqId; 045 this.maxNoEvents = maxNoEvnts; 046 } 047 048 /* (non-Javadoc) 049 * @see org.apache.oozie.command.XCommand#isLockRequired() 050 */ 051 @Override 052 protected boolean isLockRequired() { 053 return false; 054 } 055 056 /* (non-Javadoc) 057 * @see org.apache.oozie.command.XCommand#getEntityKey() 058 */ 059 @Override 060 public String getEntityKey() { 061 return Long.toString(seqId); 062 } 063 064 /* (non-Javadoc) 065 * @see org.apache.oozie.command.XCommand#loadState() 066 */ 067 @Override 068 protected void loadState() throws CommandException { 069 } 070 071 /* (non-Javadoc) 072 * @see org.apache.oozie.command.XCommand#verifyPrecondition() 073 */ 074 @Override 075 protected void verifyPrecondition() throws CommandException, PreconditionException { 076 } 077 078 /* (non-Javadoc) 079 * @see org.apache.oozie.command.XCommand#execute() 080 */ 081 @Override 082 protected List<SLAEventBean> execute() throws CommandException { 083 try { 084 JPAService jpaService = Services.get().get(JPAService.class); 085 List<SLAEventBean> slaEventList = null; 086 long lastSeqId[] = new long[1]; 087 if (jpaService != null) { 088 slaEventList = jpaService.execute(new SLAEventsGetForSeqIdJPAExecutor(seqId, maxNoEvents, lastSeqId)); 089 } 090 else { 091 LOG.error(ErrorCode.E0610); 092 } 093 setLastSeqId(lastSeqId[0]); 094 return slaEventList; 095 } 096 catch (XException ex) { 097 throw new CommandException(ex); 098 } 099 } 100 101 /** 102 * Set lastSeqId 103 * 104 * @param lastSeqId 105 */ 106 public void setLastSeqId(long lastSeqId) { 107 this.lastSeqId = lastSeqId; 108 } 109 110 /** 111 * Get lastSeqId 112 * 113 * @return lastSeqId 114 */ 115 public long getLastSeqId() { 116 return lastSeqId; 117 } 118 119 }