1.1 restoration

[mir.git] / source / mircoders / storage / DatabaseContent.java

diff --git a/source/mircoders/storage/DatabaseContent.java b/source/mircoders/storage/DatabaseContent.java
index 624b116..53c00f7 100755 (executable)
--- a/source/mircoders/storage/DatabaseContent.java
+++ b/source/mircoders/storage/DatabaseContent.java
@@ -1,17 +1,42 @@
-package mircoders.storage;
-
-import java.lang.*;
-import java.sql.*;
-import java.io.*;
-import java.util.*;
+/*
+ * Copyright (C) 2001, 2002 The Mir-coders group
+ *
+ * This file is part of Mir.
+ *
+ * Mir is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Mir is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mir; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * In addition, as a special exception, The Mir-coders gives permission to link
+ * the code of this program with  any library licensed under the Apache Software License,
+ * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
+ * (or with modified versions of the above that use the same license as the above),
+ * and distribute linked combinations including the two.  You must obey the
+ * GNU General Public License in all respects for all of the code used other than
+ * the above mentioned libraries.  If you modify this file, you may extend this
+ * exception to your version of the file, but you are not obligated to do so.
+ * If you do not wish to do so, delete this exception statement from your version.
+ */
 
-import freemarker.template.*;
+package mircoders.storage;
 
-import mir.storage.*;
-import mir.entity.*;
-import mir.misc.*;
+import java.sql.Connection;
+import java.sql.Statement;
 
-import mircoders.entity.*;
+import mir.log.LoggerWrapper;
+import mir.storage.Database;
+import mir.storage.StorageObject;
+import mir.storage.StorageObjectFailure;
 
 /**
  * <b>this class implements the access to the content-table</b>
@@ -22,32 +47,28 @@ import mircoders.entity.*;
 public class DatabaseContent extends Database implements StorageObject {
 
   private static DatabaseContent      instance;
-  private static EntityRelation       relationComments;
-  private static EntityRelation       relationFeature;
 
   // Contructors / Singleton
 
-  public static DatabaseContent getInstance()
-    throws StorageObjectException {
+  // the following *has* to be sychronized cause this static method
+  // could get preemted and we could end up with 2 instances of DatabaseFoo.
+  // see the "Singletons with needles and thread" article at JavaWorld -mh
+  public synchronized static DatabaseContent getInstance() {
 
     if (instance == null ) {
       instance = new DatabaseContent();
-      instance.myselfDatabase = instance;
     }
     return instance;
   }
 
-  private DatabaseContent()
-    throws StorageObjectException {
+  private DatabaseContent() throws StorageObjectFailure {
 
     super();
-    this.theTable="content";
-    this.theCoreTable="media";
+    mainTable="content";
+    primaryKeySequence="media_id_seq";
+    logger = new LoggerWrapper("Database.Content");
 
-    relationComments = new EntityRelation("id", "to_media", DatabaseComment.getInstance(), EntityRelation.TO_MANY);
-    relationFeature = new EntityRelation("id", "to_feature", DatabaseFeature.getInstance(), EntityRelation.TO_ONE);
-    try { this.theEntityClass = Class.forName("mircoders.entity.EntityContent"); }
-    catch (Exception e) { throw new StorageObjectException(e.toString()); }
+    theEntityClass = mircoders.entity.EntityContent.class;
   }
 
   // methods
@@ -56,40 +77,38 @@ public class DatabaseContent extends Database implements StorageObject {
    * sets the database flag is_produced to unproduced
    */
 
-  public void setUnproduced(String where) throws StorageObjectException
+  public void setUnproduced(String where) throws StorageObjectFailure
   {
     Connection con=null;Statement stmt=null;
     String sql = "update content set is_produced='0' where " + where;
+    logger.debug("set unproduced: "+where);
     try {
-      con = getPooledCon();
+      con = obtainConnection();
       // should be a preparedStatement because is faster
       stmt = con.createStatement();
       executeUpdate(stmt,sql);
+      logger.debug("set unproduced: "+where);
+    }
+    catch (Exception e) {
+      _throwStorageObjectException(e, "-- set unproduced failed");
     }
-    catch (Exception e) {_throwStorageObjectException(e, "-- set unproduced failed");}
     finally { freeConnection(con,stmt);}
   }
 
   /**
-   * returns the comments that belong to the article (via entityrelation)
-   * where db-flag is_published is true
-   */
-  public EntityList getComments(EntityContent entC) throws StorageObjectException {
-    return relationComments.getMany(entC,"webdb_create","is_published='1'");
-  }
-
-  /**
-   * returns the features that belong to the article (via entityrelation)
+   *
+   * @param id
+   * @return
+   * @throws StorageObjectFailure
    */
-  public EntityList getFeature(EntityContent entC) throws StorageObjectException {
-    return relationFeature.getMany(entC);
-  }
 
-  public boolean delete(String id) throws StorageObjectException
+  public boolean delete(String id) throws StorageObjectFailure
   {
     DatabaseComment.getInstance().deleteByContentId(id);
-    super.delete(id);
-    return true;
+    DatabaseContentToTopics.getInstance().deleteByContentId(id);
+    DatabaseContentToMedia.getInstance().deleteByContentId(id);
+
+    return super.delete(id);
   }
 
 }