/**
* Copyright (c) 2010 Yahoo! Inc. All rights reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License. See accompanying LICENSE file.
*/
package org.apache.oozie.command.coord;
import java.util.List;
import org.apache.oozie.ErrorCode;
import org.apache.oozie.SLAEventBean;
import org.apache.oozie.XException;
import org.apache.oozie.command.CommandException;
import org.apache.oozie.command.PreconditionException;
import org.apache.oozie.command.XCommand;
import org.apache.oozie.executor.jpa.SLAEventsGetForSeqIdJPAExecutor;
import org.apache.oozie.service.JPAService;
import org.apache.oozie.service.Services;
/**
* The command to get a list of SLAEvents which are greater than given seqId.
*
*/
public class SLAEventsXCommand extends XCommand<List<SLAEventBean>> {
private long seqId = 0;
private int maxNoEvents = 100; // Default
private long lastSeqId = -1;
public SLAEventsXCommand(long seqId, int maxNoEvnts) {
super("SLAEventsXCommand", "SLAEventsXCommand", 1);
this.seqId = seqId;
this.maxNoEvents = maxNoEvnts;
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#isLockRequired()
*/
@Override
protected boolean isLockRequired() {
return false;
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#getEntityKey()
*/
@Override
protected String getEntityKey() {
return Long.toString(seqId);
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#loadState()
*/
@Override
protected void loadState() throws CommandException {
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#verifyPrecondition()
*/
@Override
protected void verifyPrecondition() throws CommandException, PreconditionException {
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#execute()
*/
@Override
protected List<SLAEventBean> execute() throws CommandException {
try {
JPAService jpaService = Services.get().get(JPAService.class);
List<SLAEventBean> slaEventList = null;
long lastSeqId[] = new long[1];
if (jpaService != null) {
slaEventList = jpaService.execute(new SLAEventsGetForSeqIdJPAExecutor(seqId, maxNoEvents, lastSeqId));
}
else {
LOG.error(ErrorCode.E0610);
}
setLastSeqId(lastSeqId[0]);
return slaEventList;
}
catch (XException ex) {
throw new CommandException(ex);
}
}
/**
* Set lastSeqId
*
* @param lastSeqId
*/
public void setLastSeqId(long lastSeqId) {
this.lastSeqId = lastSeqId;
}
/**
* Get lastSeqId
*
* @return lastSeqId
*/
public long getLastSeqId() {
return lastSeqId;
}
}