source/mircoders/entity/EntityImages.java

   1 package mircoders.entity;
   2
   3 import java.lang.*;
   4 import java.io.*;
   5 import java.util.*;
   6 import java.sql.*;
   7
   8 /*
   9  * kind of hack for postgres non-standard LargeObjects that Poolman
  10  * doesn't know about. see all the casting, LargeObj stuff in getIcon, getImage
  11  * at some point when postgres has normal BLOB support, this should go.
  12  */
  13 import org.postgresql.Connection;
  14 import org.postgresql.largeobject.LargeObject;
  15 import org.postgresql.largeobject.LargeObjectManager;
  16
  17 import mir.entity.*;
  18 import mir.misc.*;
  19 import mir.storage.*;
  20
  21 /**
  22  * Diese Klasse enthält die Daten eines MetaObjekts
  23  *
  24  * @author RK
  25  * @version 11.11.2000
  26  */
  27
  28
  29 public class EntityImages extends EntityUploadedMedia
  30 {
  31         public EntityImages()
  32         {
  33                 super();
  34         }
  35
  36         public EntityImages(StorageObject theStorage) {
  37                 this();
  38                 setStorage(theStorage);
  39         }
  40
  41         //
  42         // methods
  43
  44
  45
  46         public byte[] getImage() throws StorageObjectException
  47         {
  48                 theLog.printDebugInfo("--getimage started");
  49                 java.sql.Connection con=null;Statement stmt=null;
  50                 byte[] img_data=null;
  51
  52                 try {
  53                         con = theStorageObject.getPooledCon();
  54                         con.setAutoCommit(false);
  55                         LargeObjectManager lom;
  56             java.sql.Connection jCon;
  57             stmt = con.createStatement();
  58                         ResultSet rs = theStorageObject.executeSql(stmt,
  59                             "select image_data from images where id="+getId());
  60             jCon = ((com.codestudio.sql.PoolManConnectionHandle)con)
  61                     .getNativeConnection();
  62             lom = ((org.postgresql.Connection)jCon).getLargeObjectAPI();
  63                         if(rs!=null) {
  64               if (rs.next()) {
  65                 LargeObject lob = lom.open(rs.getInt(1));
  66                 img_data = lob.read(lob.size());
  67                 lob.close();
  68                 //img_data = rs.getBytes(1);
  69               }
  70             rs.close();
  71                         }
  72                 } catch (Exception e) {
  73           e.printStackTrace();
  74           theLog.printError("EntityImages -- getImage failed"+e.toString());
  75           throwStorageObjectException(e, "EntityImages -- getImage failed: ");
  76         }
  77         finally {
  78           try {
  79             con.setAutoCommit(true);
  80           } catch (Exception e) {
  81             e.printStackTrace();
  82             theLog.printError(
  83                     "EntityImages -- getImage reseting transaction mode failed"
  84                     +e.toString());
  85           }
  86           theStorageObject.freeConnection(con,stmt);
  87         }
  88
  89                 return img_data;
  90         }
  91
  92         public void setImage(byte[] uploadData)
  93             throws StorageObjectException {
  94
  95                 if (uploadData!=null) {
  96                         java.sql.Connection con=null;PreparedStatement pstmt=null;
  97                         try {
  98
  99                                 theLog.printDebugInfo("settimage :: making internal representation of image");
 100                                 WebdbImage webdbImage= new WebdbImage(uploadData);
 101                                 theLog.printDebugInfo("settimage :: made internal representation of image");
 102                                 byte[] imageData = webdbImage.getImage();
 103                                 theLog.printDebugInfo("settimage :: getImage");
 104                                 byte[] iconData = webdbImage.getIcon();
 105                                 theLog.printDebugInfo("settimage :: getIcon");
 106
 107
 108                                 if (iconData!=null && imageData!=null) {
 109                                         con = theStorageObject.getPooledCon();
 110                                         con.setAutoCommit(false);
 111                                         theLog.printDebugInfo("settimage :: trying to insert image");
 112
 113                                         // setting values
 114                     LargeObjectManager lom;
 115                     java.sql.Connection jCon;
 116                     jCon = ((com.codestudio.sql.PoolManConnectionHandle)con)
 117                             .getNativeConnection();
 118                     lom = ((org.postgresql.Connection)jCon).getLargeObjectAPI();
 119                     int oidImage = lom.create();
 120                     int oidIcon = lom.create();
 121                     LargeObject lobImage = lom.open(oidImage);
 122                     LargeObject lobIcon = lom.open(oidIcon);
 123                     lobImage.write(imageData);
 124                     lobIcon.write(iconData);
 125                     lobImage.close();
 126                     lobIcon.close();
 127                     String sql = "update images set img_height='"
 128                         +webdbImage.getImageHeight() +
 129                                                 "',img_width='"   + webdbImage.getImageWidth() +
 130                                                 "',icon_height='" + webdbImage.getIconHeight() +
 131                                                 "',icon_width='"  + webdbImage.getIconWidth()
 132                         +  "', image_data="+oidImage+", icon_data="+oidIcon
 133                         +" where id="+getId();
 134                                         theLog.printDebugInfo("settimage :: updating sizes: "+ sql);
 135                                         pstmt = con.prepareStatement(sql);
 136                                         //pstmt.setBytes(1, imageData);
 137                                         //pstmt.setBytes(2, iconData);
 138                                         pstmt.executeUpdate();
 139                                         sql="update content set is_produced='0' where to_media="+getId();
 140                                         pstmt = con.prepareStatement(sql);
 141                                         pstmt.executeUpdate();
 142                                 }
 143                         }
 144                         catch (Exception e) {throwStorageObjectException(e, "settimage :: setImage gescheitert: ");}
 145                         finally {
 146                                 try { if (con!=null) con.setAutoCommit(true); } catch (Exception e) {;}
 147                                 theStorageObject.freeConnection(con,pstmt); }
 148                 }
 149         }
 150
 151         public void update() throws StorageObjectException {
 152                 super.update();
 153                 try {
 154                         theStorageObject.executeUpdate("update content set is_produced='0' where to_media="+getId());
 155                 } catch (SQLException e) {
 156                         throwStorageObjectException(e, "EntityImages :: update :: failed!! ");
 157                 }
 158         }
 159
 160         public void setValues(HashMap theStringValues)
 161         {
 162                 if (theStringValues != null) {
 163                         if (!theStringValues.containsKey("is_published"))
 164                          theStringValues.put("is_published","0");
 165                 }
 166                 super.setValues(theStringValues);
 167         }
 168
 169         public byte[] getIcon() throws StorageObjectException
 170         {
 171                 java.sql.Connection con=null;Statement stmt=null;
 172                 byte[] img_data=null;
 173
 174                 try {
 175                         con = theStorageObject.getPooledCon();
 176                         con.setAutoCommit(false);
 177             LargeObjectManager lom;
 178             java.sql.Connection jCon;
 179                         stmt = con.createStatement();
 180                         ResultSet rs = theStorageObject.executeSql(stmt,
 181                             "select icon_data from images where id="+getId());
 182             jCon = ((com.codestudio.sql.PoolManConnectionHandle)con)
 183                     .getNativeConnection();
 184             lom = ((org.postgresql.Connection)jCon).getLargeObjectAPI();
 185                         if(rs!=null) {
 186                                 if (rs.next()) {
 187                   LargeObject lob = lom.open(rs.getInt(1));
 188                   img_data = lob.read(lob.size());
 189                   lob.close();
 190                   //img_data = rs.getBytes(1);
 191                                 }
 192                 rs.close();
 193                         }
 194                 } catch (Exception e) {
 195           e.printStackTrace();
 196           theLog.printError("EntityImages -- getIcon failed"+e.toString());
 197           throwStorageObjectException(e, "EntityImages -- getIcon failed:");
 198                 } finally {
 199           try {
 200             con.setAutoCommit(true);
 201           } catch (Exception e) {
 202             e.printStackTrace();
 203             theLog.printError(
 204                     "EntityImages -- getIcon reseting transaction mode failed"
 205                     +e.toString());
 206           }
 207           theStorageObject.freeConnection(con,stmt);
 208        }
 209
 210        return img_data;
 211         }
 212
 213 }