1   /**
2    * Copyright (c) 2000-2007 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portlet.documentlibrary.service.persistence;
24  
25  import com.liferay.portal.SystemException;
26  import com.liferay.portal.kernel.util.StringMaker;
27  import com.liferay.portal.kernel.util.StringUtil;
28  import com.liferay.portal.spring.hibernate.CustomSQLUtil;
29  import com.liferay.portal.spring.hibernate.HibernateUtil;
30  import com.liferay.util.dao.hibernate.QueryPos;
31  import com.liferay.util.dao.hibernate.QueryUtil;
32  
33  import java.util.ArrayList;
34  import java.util.Iterator;
35  import java.util.List;
36  
37  import org.hibernate.Hibernate;
38  import org.hibernate.SQLQuery;
39  import org.hibernate.Session;
40  
41  /**
42   * <a href="DLFileEntryAndShortcutFinder.java.html"><b><i>View Source</i></b>
43   * </a>
44   *
45   * @author Brian Wing Shun Chan
46   *
47   */
48  public class DLFileEntryAndShortcutFinder {
49  
50      public static String COUNT_BY_FOLDER_IDS =
51          DLFileEntryAndShortcutFinder.class.getName() + ".countByFolderIds";
52  
53      public static String FIND_BY_FOLDER_IDS =
54          DLFileEntryAndShortcutFinder.class.getName() + ".findByFolderIds";
55  
56      public static int countByFolderIds(List folderIds) throws SystemException {
57          Session session = null;
58  
59          try {
60              session = HibernateUtil.openSession();
61  
62              String sql = CustomSQLUtil.get(COUNT_BY_FOLDER_IDS);
63  
64              sql = StringUtil.replace(
65                  sql, "[$FILE_ENTRY_FOLDER_ID$]",
66                  _getFolderIds(folderIds, "DLFileEntry"));
67              sql = StringUtil.replace(
68                  sql, "[$FILE_SHORTCUT_FOLDER_ID$]",
69                  _getFolderIds(folderIds, "DLFileShortcut"));
70  
71              SQLQuery q = session.createSQLQuery(sql);
72  
73              q.addScalar(HibernateUtil.getCountColumnName(), Hibernate.LONG);
74  
75              QueryPos qPos = QueryPos.getInstance(q);
76  
77              for (int i = 0; i < folderIds.size(); i++) {
78                  Long folderId = (Long)folderIds.get(i);
79  
80                  qPos.add(folderId);
81              }
82  
83              for (int i = 0; i < folderIds.size(); i++) {
84                  Long folderId = (Long)folderIds.get(i);
85  
86                  qPos.add(folderId);
87              }
88  
89              int count = 0;
90  
91              Iterator itr = q.list().iterator();
92  
93              while (itr.hasNext()) {
94                  Long l = (Long)itr.next();
95  
96                  if (l != null) {
97                      count += l.intValue();
98                  }
99              }
100 
101             return count;
102         }
103         catch (Exception e) {
104             throw new SystemException(e);
105         }
106         finally {
107             HibernateUtil.closeSession(session);
108         }
109     }
110 
111     public static List findByFolderIds(List folderIds, int begin, int end)
112         throws SystemException {
113 
114         Session session = null;
115 
116         try {
117             session = HibernateUtil.openSession();
118 
119             String sql = CustomSQLUtil.get(FIND_BY_FOLDER_IDS);
120 
121             sql = StringUtil.replace(
122                 sql, "[$FILE_ENTRY_FOLDER_ID$]",
123                 _getFolderIds(folderIds, "DLFileEntry"));
124             sql = StringUtil.replace(
125                 sql, "[$FILE_SHORTCUT_FOLDER_ID$]",
126                 _getFolderIds(folderIds, "DLFileShortcut"));
127 
128             SQLQuery q = session.createSQLQuery(sql);
129 
130             q.addScalar("folderId", Hibernate.LONG);
131             q.addScalar("name", Hibernate.STRING);
132             q.addScalar("title", Hibernate.STRING);
133             q.addScalar("fileShortcutId", Hibernate.LONG);
134 
135             QueryPos qPos = QueryPos.getInstance(q);
136 
137             for (int i = 0; i < folderIds.size(); i++) {
138                 Long folderId = (Long)folderIds.get(i);
139 
140                 qPos.add(folderId);
141             }
142 
143             for (int i = 0; i < folderIds.size(); i++) {
144                 Long folderId = (Long)folderIds.get(i);
145 
146                 qPos.add(folderId);
147             }
148 
149             List list = new ArrayList();
150 
151             Iterator itr = QueryUtil.iterate(
152                 q, HibernateUtil.getDialect(), begin, end);
153 
154             while (itr.hasNext()) {
155                 Object[] array = (Object[])itr.next();
156 
157                 Long folderId = (Long)array[0];
158                 String name = (String)array[1];
159                 //String title = (String)array[2];
160                 long fileShortcutId = ((Long)array[3]).longValue();
161 
162                 Object obj = null;
163 
164                 if (fileShortcutId > 0) {
165                     obj = DLFileShortcutUtil.findByPrimaryKey(fileShortcutId);
166                 }
167                 else {
168                     obj = DLFileEntryUtil.findByF_N(folderId.longValue(), name);
169                 }
170 
171                 list.add(obj);
172             }
173 
174             return list;
175         }
176         catch (Exception e) {
177             throw new SystemException(e);
178         }
179         finally {
180             HibernateUtil.closeSession(session);
181         }
182     }
183 
184     private static String _getFolderIds(List folderIds, String table) {
185         StringMaker sm = new StringMaker();
186 
187         for (int i = 0; i < folderIds.size(); i++) {
188             sm.append(table);
189             sm.append(".folderId = ? ");
190 
191             if ((i + 1) != folderIds.size()) {
192                 sm.append("OR ");
193             }
194         }
195 
196         return sm.toString();
197     }
198 
199 }