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.executor.jpa;
019    
020    import java.util.List;
021    
022    import javax.persistence.EntityManager;
023    
024    import org.apache.oozie.ErrorCode;
025    import org.apache.oozie.WorkflowActionBean;
026    import org.apache.oozie.WorkflowJobBean;
027    import org.apache.oozie.command.CommandException;
028    import org.apache.oozie.service.JPAService;
029    import org.apache.oozie.service.Services;
030    import org.apache.oozie.util.ParamChecker;
031    
032    /**
033     * This JPA Executor is responsible for getting the Workflow job with actions in certain range.
034     */
035    public class WorkflowInfoWithActionsSubsetGetJPAExecutor implements JPAExecutor<WorkflowJobBean> {
036    
037        private String wfJobId = null;
038        private WorkflowJobBean workflow;
039        private final int start;
040        private final int len;
041    
042        /**
043         * This will create the WorkflowInfoWithActionsSubsetGetJPAExecutor object. which is responsible for getting the
044         * Workflow job with actions in certain range.
045         * 
046         * @param wfJobId
047         * @param start
048         * @param len
049         */
050        public WorkflowInfoWithActionsSubsetGetJPAExecutor(String wfJobId, int start, int len) {
051            ParamChecker.notNull(wfJobId, "wfJobId");
052            this.wfJobId = wfJobId;
053            this.start = start;
054            this.len = len;
055        }
056    
057        /* (non-Javadoc)
058         * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
059         */
060        @Override
061        public WorkflowJobBean execute(EntityManager em) throws JPAExecutorException {
062            try {
063                JPAService jpaService = Services.get().get(JPAService.class);
064                if (jpaService != null) {
065                    this.workflow = jpaService.execute(new WorkflowJobGetJPAExecutor(this.wfJobId));
066                }
067                else {
068                    throw new JPAExecutorException(ErrorCode.E0610, this.wfJobId);
069                }
070            }
071            catch (Exception ex) {
072                if (ex instanceof JPAExecutorException) {
073                    throw (JPAExecutorException) ex;
074                }
075                else {
076                    throw new JPAExecutorException(ErrorCode.E0603, ex.getMessage(), ex);
077                }
078            }
079    
080            if (this.workflow != null) {
081                JPAService jpaService = Services.get().get(JPAService.class);
082                List<WorkflowActionBean> actionList;
083                if (jpaService != null) {
084                    actionList = jpaService.execute(new WorkflowActionSubsetGetJPAExecutor(this.wfJobId, start, len));
085                }
086                else {
087                    throw new JPAExecutorException(ErrorCode.E0610, this.wfJobId);
088                }
089                this.workflow.setActions(actionList);
090            }
091            else {
092                throw new JPAExecutorException(ErrorCode.E0604, wfJobId);
093            }
094    
095            return this.workflow;
096        }
097    
098        /* (non-Javadoc)
099         * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
100         */
101        @Override
102        public String getName() {
103            return "WorkflowInfoWithActionsSubsetGetJPAExecutor";
104        }
105    }