| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.oozie.executor.jpa; |
| |
| import java.sql.SQLException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| import javax.persistence.EntityManager; |
| import javax.persistence.Query; |
| |
| import org.apache.oozie.ErrorCode; |
| import org.apache.oozie.WorkflowActionBean; |
| import org.apache.openjpa.persistence.OpenJPAPersistence; |
| |
| /** |
| * JPA Command to get subset of workflow actions for a particular workflow. |
| */ |
| public class WorkflowActionSubsetGetJPAExecutor implements JPAExecutor<List<WorkflowActionBean>> { |
| |
| private final String wfId; |
| private final int start; |
| private final int length; |
| |
| /** |
| * This Constructor creates the WorkflowActionSubsetGetJPAExecutor object Which gets the List of wrokflow action |
| * bean. |
| * |
| * @param wfId WF id |
| * @param start first result |
| * @param length length |
| */ |
| public WorkflowActionSubsetGetJPAExecutor(String wfId, int start, int length) { |
| Objects.requireNonNull(wfId, "wfJobId cannot be null"); |
| this.wfId = wfId; |
| this.start = start; |
| this.length = length; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public List<WorkflowActionBean> execute(EntityManager em) throws JPAExecutorException { |
| List<WorkflowActionBean> actions; |
| List<WorkflowActionBean> actionList = new ArrayList<WorkflowActionBean>(); |
| try { |
| Query q = em.createNamedQuery("GET_ACTIONS_FOR_WORKFLOW"); |
| OpenJPAPersistence.cast(q); |
| q.setParameter("wfId", wfId); |
| q.setFirstResult(start - 1); |
| q.setMaxResults(length); |
| actions = q.getResultList(); |
| } |
| catch (Exception e) { |
| throw new JPAExecutorException(ErrorCode.E0605, "null", e); |
| } |
| return actions; |
| } |
| |
| @Override |
| public String getName() { |
| return "WorkflowActionSubsetGetJPAExecutor"; |
| } |
| } |