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
019package org.apache.oozie.executor.jpa;
020
021import java.sql.Timestamp;
022import java.util.ArrayList;
023import java.util.List;
024import java.util.Map;
025
026import javax.persistence.EntityManager;
027import javax.persistence.Query;
028
029import org.apache.oozie.BundleJobBean;
030import org.apache.oozie.BundleJobInfo;
031import org.apache.oozie.StringBlob;
032import org.apache.oozie.client.Job;
033import org.apache.oozie.client.BundleJob.Timeunit;
034import org.apache.oozie.store.StoreStatusFilter;
035import org.apache.oozie.util.ParamChecker;
036import org.apache.openjpa.persistence.OpenJPAPersistence;
037import org.apache.openjpa.persistence.OpenJPAQuery;
038import org.apache.openjpa.persistence.jdbc.FetchDirection;
039import org.apache.openjpa.persistence.jdbc.JDBCFetchPlan;
040import org.apache.openjpa.persistence.jdbc.LRSSizeAlgorithm;
041import org.apache.openjpa.persistence.jdbc.ResultSetType;
042
043/**
044 * Load the BundleInfo and return it.
045 */
046public class BundleJobInfoGetJPAExecutor implements JPAExecutor<BundleJobInfo> {
047
048    public static final String DEFAULT_ORDER_BY = " order by w.createdTimestamp desc ";
049    private Map<String, List<String>> filter;
050    private int start = 1;
051    private int len = 50;
052
053    /**
054     * The constructor for BundleJobInfoGetJPAExecutor
055     *
056     * @param filter the filter string
057     * @param start start location for paging
058     * @param len total length to get
059     */
060    public BundleJobInfoGetJPAExecutor(Map<String, List<String>> filter, int start, int len) {
061        ParamChecker.notNull(filter, "filter");
062        this.filter = filter;
063        this.start = start;
064        this.len = len;
065    }
066
067    /* (non-Javadoc)
068     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
069     */
070    @Override
071    public String getName() {
072        return "BundleJobInfoGetJPAExecutor";
073    }
074
075    /* (non-Javadoc)
076     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
077     */
078    @Override
079    @SuppressWarnings("unchecked")
080    public BundleJobInfo execute(EntityManager em) throws JPAExecutorException {
081        List<String> orArray = new ArrayList<String>();
082        List<String> colArray = new ArrayList<String>();
083        List<Object> valArray = new ArrayList<Object>();
084        StringBuilder sb = new StringBuilder("");
085        String orderBy = DEFAULT_ORDER_BY;
086
087        StoreStatusFilter.filter(filter, orArray, colArray, valArray, sb, StoreStatusFilter.bundleSeletStr,
088                                 StoreStatusFilter.bundleCountStr);
089        orderBy = StoreStatusFilter.getSortBy(filter, orderBy);
090
091        int realLen = 0;
092
093        Query q = null;
094        Query qTotal = null;
095        if (orArray.size() == 0 && orderBy.equals(DEFAULT_ORDER_BY)) {
096            q = em.createNamedQuery("GET_BUNDLE_JOBS_COLUMNS");
097            q.setFirstResult(start - 1);
098            q.setMaxResults(len);
099            qTotal = em.createNamedQuery("GET_BUNDLE_JOBS_COUNT");
100        }
101        else {
102            sb = sb.toString().trim().length() == 0 ? sb.append(StoreStatusFilter.bundleSeletStr) : sb;
103            String sbTotal = sb.toString();
104            sb.append(orderBy);
105            q = em.createQuery(sb.toString());
106            q.setFirstResult(start - 1);
107            q.setMaxResults(len);
108            qTotal = em.createQuery(sbTotal.replace(StoreStatusFilter.bundleSeletStr,
109                                                                          StoreStatusFilter.bundleCountStr));
110        }
111
112        for (int i = 0; i < orArray.size(); i++) {
113            q.setParameter(colArray.get(i), valArray.get(i));
114            qTotal.setParameter(colArray.get(i), valArray.get(i));
115        }
116
117        OpenJPAQuery kq = OpenJPAPersistence.cast(q);
118        JDBCFetchPlan fetch = (JDBCFetchPlan) kq.getFetchPlan();
119        fetch.setFetchBatchSize(20);
120        fetch.setResultSetType(ResultSetType.SCROLL_INSENSITIVE);
121        fetch.setFetchDirection(FetchDirection.FORWARD);
122        fetch.setLRSSizeAlgorithm(LRSSizeAlgorithm.LAST);
123        List<?> resultList = q.getResultList();
124        List<Object[]> objectArrList = (List<Object[]>) resultList;
125        List<BundleJobBean> bundleBeansList = new ArrayList<BundleJobBean>();
126
127        for (Object[] arr : objectArrList) {
128            BundleJobBean bean = getBeanForBundleJobFromArray(arr);
129            bundleBeansList.add(bean);
130        }
131
132        realLen = ((Long) qTotal.getSingleResult()).intValue();
133
134        return new BundleJobInfo(bundleBeansList, start, len, realLen);
135    }
136
137    private BundleJobBean getBeanForBundleJobFromArray(Object[] arr) {
138
139        BundleJobBean bean = new BundleJobBean();
140        bean.setId((String) arr[0]);
141        if (arr[1] != null) {
142            bean.setAppName((String) arr[1]);
143        }
144        if (arr[2] != null) {
145            bean.setAppPath((String) arr[2]);
146        }
147        if (arr[3] != null) {
148            bean.setConfBlob((StringBlob) arr[3]);
149        }
150        if (arr[4] != null) {
151            bean.setStatus(Job.Status.valueOf((String) arr[4]));
152        }
153        if (arr[5] != null) {
154            bean.setKickoffTime((Timestamp) arr[5]);
155        }
156        if (arr[6] != null) {
157            bean.setStartTime((Timestamp) arr[6]);
158        }
159        if (arr[7] != null) {
160            bean.setEndTime((Timestamp) arr[7]);
161        }
162        if (arr[8] != null) {
163            bean.setPauseTime((Timestamp) arr[8]);
164        }
165        if (arr[9] != null) {
166            bean.setCreatedTime((Timestamp) arr[9]);
167        }
168        if (arr[10] != null) {
169            bean.setUser((String) arr[10]);
170        }
171        if (arr[11] != null) {
172            bean.setGroup((String) arr[11]);
173        }
174        if (arr[12] != null) {
175            bean.setTimeUnit(Timeunit.valueOf((String) arr[12]));
176        }
177        if (arr[13] != null) {
178            bean.setTimeOut((Integer) arr[13]);
179        }
180
181        return bean;
182    }
183}