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    import java.util.Map;
022    
023    import org.apache.oozie.CoordinatorJobInfo;
024    import org.apache.oozie.ErrorCode;
025    import org.apache.oozie.XException;
026    import org.apache.oozie.command.CommandException;
027    import org.apache.oozie.command.PreconditionException;
028    import org.apache.oozie.executor.jpa.CoordJobInfoGetJPAExecutor;
029    import org.apache.oozie.service.JPAService;
030    import org.apache.oozie.service.Services;
031    
032    /**
033     * The command to get a job info for a list of coordinator jobs by given filters.
034     */
035    public class CoordJobsXCommand extends CoordinatorXCommand<CoordinatorJobInfo> {
036        private Map<String, List<String>> filter;
037        private int start = 1;
038        private int len = 50;
039    
040        public CoordJobsXCommand(Map<String, List<String>> filter, int start, int length) {
041            super("coord.job.info", "coord.job.info", 1);
042            this.filter = filter;
043            this.start = start;
044            this.len = length;
045        }
046    
047        /* (non-Javadoc)
048         * @see org.apache.oozie.command.XCommand#isLockRequired()
049         */
050        @Override
051        protected boolean isLockRequired() {
052            return false;
053        }
054    
055        /* (non-Javadoc)
056         * @see org.apache.oozie.command.XCommand#getEntityKey()
057         */
058        @Override
059        public String getEntityKey() {
060            return null;
061        }
062    
063        /* (non-Javadoc)
064         * @see org.apache.oozie.command.XCommand#loadState()
065         */
066        @Override
067        protected void loadState() throws CommandException {
068        }
069    
070        /* (non-Javadoc)
071         * @see org.apache.oozie.command.XCommand#verifyPrecondition()
072         */
073        @Override
074        protected void verifyPrecondition() throws CommandException, PreconditionException {
075        }
076    
077        /* (non-Javadoc)
078         * @see org.apache.oozie.command.XCommand#execute()
079         */
080        @Override
081        protected CoordinatorJobInfo execute() throws CommandException {
082            try {
083                JPAService jpaService = Services.get().get(JPAService.class);
084                CoordinatorJobInfo coordInfo = null;
085                if (jpaService != null) {
086                    coordInfo = jpaService.execute(new CoordJobInfoGetJPAExecutor(filter, start, len));
087                }
088                else {
089                    LOG.error(ErrorCode.E0610);
090                }
091                return coordInfo;
092            }
093            catch (XException ex) {
094                throw new CommandException(ex);
095            }
096        }
097    
098    }