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 org.apache.oozie.CoordinatorActionBean;
021    import org.apache.oozie.ErrorCode;
022    import org.apache.oozie.command.CommandException;
023    import org.apache.oozie.command.PreconditionException;
024    import org.apache.oozie.executor.jpa.CoordActionGetForInfoJPAExecutor;
025    import org.apache.oozie.executor.jpa.CoordActionGetJPAExecutor;
026    import org.apache.oozie.executor.jpa.JPAExecutorException;
027    import org.apache.oozie.service.JPAService;
028    import org.apache.oozie.service.Services;
029    import org.apache.oozie.util.ParamChecker;
030    
031    public class CoordActionInfoXCommand extends CoordinatorXCommand<CoordinatorActionBean> {
032        /**
033         * This class gets the Coordinator action info based on coordinator action id.
034         */
035        private final String id;
036    
037        public CoordActionInfoXCommand(String id) {
038            super("action.info", "action.info", 1);
039            this.id = ParamChecker.notEmpty(id, "id");
040        }
041    
042        /* (non-Javadoc)
043         * @see org.apache.oozie.command.XCommand#execute()
044         */
045        @Override
046        protected CoordinatorActionBean execute() throws CommandException {
047            JPAService jpaService = Services.get().get(JPAService.class);
048            if (jpaService != null) {
049                CoordinatorActionBean action;
050                try {
051                    action = jpaService.execute(new CoordActionGetForInfoJPAExecutor(this.id));
052                }
053                catch (JPAExecutorException e) {
054                    throw new CommandException(e);
055                }
056                return action;
057            }
058            else {
059                LOG.error(ErrorCode.E0610);
060                return null;
061            }
062        }
063    
064        /* (non-Javadoc)
065         * @see org.apache.oozie.command.XCommand#getEntityKey()
066         */
067        @Override
068        public String getEntityKey() {
069            return null;
070        }
071    
072        /* (non-Javadoc)
073         * @see org.apache.oozie.command.XCommand#loadState()
074         */
075        @Override
076        protected void loadState() throws CommandException {
077        }
078    
079        /* (non-Javadoc)
080         * @see org.apache.oozie.command.XCommand#verifyPrecondition()
081         */
082        @Override
083        protected void verifyPrecondition() throws CommandException, PreconditionException {
084        }
085    
086        /* (non-Javadoc)
087         * @see org.apache.oozie.command.XCommand#isLockRequired()
088         */
089        @Override
090        protected boolean isLockRequired() {
091            return false;
092        }
093    }