2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
32 package mircoders.entity;
40 * kind of hack for postgres non-standard LargeObjects that Poolman
41 * doesn't know about. see all the casting, LargeObj stuff in getIcon, getImage
42 * at some point when postgres has normal BLOB support, this should go.
44 import org.postgresql.Connection;
45 import org.postgresql.largeobject.LargeObject;
46 import org.postgresql.largeobject.LargeObjectManager;
47 import org.postgresql.largeobject.BlobInputStream;
54 * Diese Klasse enthält die Daten eines MetaObjekts
57 * @version $Id: EntityImages.java,v 1.6.4.2 2002/11/01 05:38:20 mh Exp $
61 public class EntityImages extends EntityUploadedMedia
64 Random r = new Random();
71 public EntityImages(StorageObject theStorage) {
73 setStorage(theStorage);
80 public InputStream getImage() throws StorageObjectException
82 theLog.printDebugInfo("--getimage started");
83 java.sql.Connection con=null;Statement stmt=null;
84 BlobInputStream in; InputStream img_in = null;
87 con = theStorageObject.getPooledCon();
88 con.setAutoCommit(false);
89 LargeObjectManager lom;
90 java.sql.Connection jCon;
91 stmt = con.createStatement();
92 ResultSet rs = theStorageObject.executeSql(stmt,
93 "select image_data from images where id="+getId());
94 jCon = ((com.codestudio.sql.PoolManConnectionHandle)con)
95 .getNativeConnection();
96 lom = ((org.postgresql.Connection)jCon).getLargeObjectAPI();
99 LargeObject lob = lom.open(rs.getInt(1));
100 in = (BlobInputStream)lob.getInputStream();
101 img_in = new ImageInputStream(in, con, stmt);
105 } catch (Exception e) {
107 theLog.printError("EntityImages -- getImage failed"+e.toString());
108 throwStorageObjectException(e, "EntityImages -- getImage failed: ");
110 con.setAutoCommit(true);
111 } catch (Exception e2) {
114 "EntityImages -- getImage reseting transaction mode failed"
117 theStorageObject.freeConnection(con,stmt);
123 public void setImage(InputStream in, String type)
124 throws StorageObjectException {
127 java.sql.Connection con=null;PreparedStatement pstmt=null;
131 theLog.printDebugInfo("settimage :: making internal representation of image");
133 String fName = MirConfig.getProp("TempDir")+File.separator+r.nextInt();
135 FileUtil.write(f, in);
136 WebdbImage webdbImage= new WebdbImage(f, type);
137 theLog.printDebugInfo("settimage :: made internal representation of image");
139 con = theStorageObject.getPooledCon();
140 con.setAutoCommit(false);
141 theLog.printDebugInfo("settimage :: trying to insert image");
144 LargeObjectManager lom;
145 java.sql.Connection jCon;
146 jCon = ((com.codestudio.sql.PoolManConnectionHandle)con)
147 .getNativeConnection();
148 lom = ((org.postgresql.Connection)jCon).getLargeObjectAPI();
149 int oidImage = lom.create();
150 int oidIcon = lom.create();
151 LargeObject lobImage = lom.open(oidImage);
152 LargeObject lobIcon = lom.open(oidIcon);
153 webdbImage.setImage(lobImage.getOutputStream());
154 webdbImage.setIcon(lobIcon.getOutputStream());
157 String sql = "update images set img_height='"
158 +webdbImage.getImageHeight() +
159 "',img_width='" + webdbImage.getImageWidth() +
160 "',icon_height='" + webdbImage.getIconHeight() +
161 "',icon_width='" + webdbImage.getIconWidth()
162 + "', image_data="+oidImage+", icon_data="+oidIcon
163 +" where id="+getId();
164 theLog.printDebugInfo("settimage :: updating sizes: "+ sql);
165 pstmt = con.prepareStatement(sql);
166 //pstmt.setBytes(1, imageData);
167 //pstmt.setBytes(2, iconData);
168 pstmt.executeUpdate();
169 sql="update content set is_produced='0' where to_media="+getId();
170 pstmt = con.prepareStatement(sql);
171 pstmt.executeUpdate();
173 catch (Exception e) {throwStorageObjectException(e, "settimage :: setImage gescheitert: ");}
177 con.setAutoCommit(true);
178 // get rid of the temp. file
180 } catch (Exception e) {;}
181 theStorageObject.freeConnection(con,pstmt);
186 public void update() throws StorageObjectException {
189 theStorageObject.executeUpdate("update content set is_produced='0' where to_media="+getId());
190 } catch (SQLException e) {
191 throwStorageObjectException(e, "EntityImages :: update :: failed!! ");
195 public void setValues(HashMap theStringValues)
197 if (theStringValues != null) {
198 if (!theStringValues.containsKey("is_published"))
199 theStringValues.put("is_published","0");
201 super.setValues(theStringValues);
205 * Takes an OutputStream as an argument and reads in the data
206 * from the DB and writes it to the OutputStream.
208 * It will also take care of closing the OutputStream.
210 public InputStream getIcon() throws StorageObjectException
212 java.sql.Connection con=null;Statement stmt=null;
213 BlobInputStream in=null;ImageInputStream img_in=null;
216 con = theStorageObject.getPooledCon();
217 con.setAutoCommit(false);
218 LargeObjectManager lom;
219 java.sql.Connection jCon;
220 stmt = con.createStatement();
221 ResultSet rs = theStorageObject.executeSql(stmt,
222 "select icon_data from images where id="+getId());
223 jCon = ((com.codestudio.sql.PoolManConnectionHandle)con)
224 .getNativeConnection();
225 lom = ((org.postgresql.Connection)jCon).getLargeObjectAPI();
228 LargeObject lob = lom.open(rs.getInt(1));
229 in = (BlobInputStream)lob.getInputStream();
230 img_in = new ImageInputStream( in, con ,stmt);
231 //img_data = rs.getBytes(1);
235 } catch (Exception e) {
237 theLog.printError("EntityImages -- getIcon failed"+e.toString());
238 throwStorageObjectException(e, "EntityImages -- getIcon failed:");
240 con.setAutoCommit(true);
241 } catch (Exception e2) {
244 "EntityImages -- getIcon reseting transaction mode failed"
247 theStorageObject.freeConnection(con,stmt);
254 * a small wrapper class that allows us to store the DB connection resources
255 * that the BlobInputStream is using and free them upon closing of the stream
257 private class ImageInputStream extends InputStream {
260 java.sql.Connection _con;
263 public ImageInputStream(BlobInputStream in, java.sql.Connection con,
271 public void close () throws IOException {
275 _con.setAutoCommit(true);
276 theStorageObject.freeConnection(_con,_stmt);
277 } catch (Exception e) {
278 throw new IOException("close(): "+e.toString());
282 public int read() throws IOException {