* 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.
+ * 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.
*/
package mircoders.storage;
+import mir.entity.EntityList;
+import mir.log.LoggerWrapper;
+import mir.storage.Database;
+import mir.storage.DatabaseFailure;
+import mircoders.entity.EntityContent;
+import mircoders.entity.EntityTopics;
+
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
-import java.util.Vector;
-
-import mir.entity.EntityList;
-import mir.log.LoggerWrapper;
-import mir.storage.Database;
-import mir.storage.StorageObject;
-import mir.storage.StorageObjectFailure;
-import mircoders.entity.EntityContent;
-import mircoders.entity.EntityTopics;
/**
* <b>This class implements the 1-n-relation between
*
*/
-public class DatabaseContentToTopics extends Database implements StorageObject{
+public class DatabaseContentToTopics extends Database {
private static DatabaseContentToTopics instance;
- public static DatabaseContentToTopics getInstance() {
+ public synchronized static DatabaseContentToTopics getInstance() {
if (instance == null) {
- synchronized (DatabaseContentToTopics.class) {
- if (instance == null) {
- instance = new DatabaseContentToTopics();
- instance.myselfDatabase = instance;
- }
- }
+ instance = new DatabaseContentToTopics();
}
return instance;
}
super();
logger = new LoggerWrapper("Database.ContentToTopics");
-
- hasTimestamp = false;
- theTable="content_x_topic";
- theEntityClass = mir.entity.GenericEntity.class;
+ mainTable="content_x_topic";
+ entityClass = mir.entity.GenericEntity.class;
}
/**
* This class return an EntityList of Topics
- * @param EntityContent content
- * @returns EntityList
*/
public EntityList getTopics(EntityContent content) {
EntityList returnList=null;
if (content != null) {
- // get all to_topic from content_x_topic
- String id = content.getId();
- String subselect = "id in (select topic_id from " + theTable + " where content_id=" + id+")";
+ String id = content.getId();
try {
- returnList = DatabaseTopics.getInstance().selectByWhereClause(subselect,-1);
+ ArrayList extraTables = new ArrayList();
+ extraTables.add(mainTable+" cxt");
+ returnList = DatabaseTopics.getInstance()
+ .selectByWhereClauseWithExtraTables("t",extraTables,
+ "t.id=cxt.topic_id and cxt.content_id="+id );
}
catch (Exception e) {
logger.error("-- get topics failed " + e.toString());
}
/**
- * Returns a ArrayList of Integer-Objects from a content-id.
- * @returns ArrayList
+ * Returns a List of String-Objects from a content-id.
*/
public List getTopicsOfContent(String contentId)
- throws StorageObjectFailure {
+ throws DatabaseFailure {
ArrayList returnList = new ArrayList();
if (contentId != null) {
- String sql = "select topic_id from " + theTable + " where content_id=" + contentId;
+ String sql = "select topic_id from " + mainTable + " where content_id=" + contentId;
Connection con=null;Statement stmt=null;
try {
- con = getPooledCon();
+ con = obtainConnection();
+
// should be a preparedStatement because is faster
stmt = con.createStatement();
ResultSet rs = executeSql(stmt,sql);
if(rs!=null){
while(rs.next()){
- returnList.add(new Integer(rs.getInt("topic_id")));
+ returnList.add(Integer.toString(rs.getInt("topic_id")));
}
}
}
return result;
}
- public void setTopics(String anArticleId, String [] aTopics) throws StorageObjectFailure {
+ public void setTopics(String anArticleId, String [] aTopics) throws DatabaseFailure {
if (aTopics==null)
setTopics(anArticleId, (List) null);
else
setTopics(anArticleId, Arrays.asList(aTopics));
}
- public void setTopics(String anArticleId, List aTopics) throws StorageObjectFailure {
- List newTopics = new Vector();
+ public void setTopics(String anArticleId, List aTopics) throws DatabaseFailure {
+ List newTopics = new ArrayList();
if (aTopics!=null) {
Iterator i = aTopics.iterator();
List currentTopics = getTopicsOfContent(anArticleId);
logger.debug("New topics = " + newTopics.toString());
logger.debug("Current topics = " + currentTopics.toString());
- List topicsToDelete = new Vector(currentTopics);
+ List topicsToDelete = new ArrayList(currentTopics);
topicsToDelete.removeAll(newTopics);
- List topicsToAdd = new Vector(newTopics);
+ List topicsToAdd = new ArrayList(newTopics);
topicsToAdd.removeAll(currentTopics);
logger.debug("to delete = " + topicsToDelete.toString());
logger.debug("to add = " + topicsToAdd.toString());
if (!topicsToDelete.isEmpty()) {
String sql =
- "delete from " + theTable + " " +
+ "delete from " + mainTable + " " +
"where content_id=" + anArticleId +
" and topic_id in (" + getIdListExpression(topicsToDelete) + ")";
Connection connection=null;
Statement statement=null;
try {
- connection = getPooledCon();
+ connection = obtainConnection();
statement = connection.createStatement();
- int rs = executeUpdate(statement, sql);
+ executeUpdate(statement, sql);
}
catch (Exception e) {
logger.error("-- deleting topics failed");
while (i.hasNext()) {
Integer topicId = (Integer) i.next();
String sql =
- "insert into " + theTable + " (content_id, topic_id) "+
+ "insert into " + mainTable + " (content_id, topic_id) "+
"values (" + anArticleId + "," + topicId + ")";
Connection connection=null;
Statement statement=null;
try {
- connection = getPooledCon();
+ connection = obtainConnection();
// should be a preparedStatement because is faster
statement = connection.createStatement();
- int rs = executeUpdate(statement, sql);
+ executeUpdate(statement, sql);
}
catch (Exception e) {
logger.error("-- adding topics failed");
}
public void deleteByContentId(String contentId)
- throws StorageObjectFailure {
+ throws DatabaseFailure {
if (contentId == null) {
//theLog.printDebugInfo("-- delete topics failed -- no content id");
return;
}
//delete all row with content_id=contentId
- String sql = "delete from "+ theTable +" where content_id=" + contentId;
+ String sql = "delete from "+ mainTable +" where content_id=" + contentId;
Connection con=null;Statement stmt=null;
try {
- con = getPooledCon();
+ con = obtainConnection();
// should be a preparedStatement because is faster
stmt = con.createStatement();
- ResultSet rs = executeSql(stmt,sql);
+ executeSql(stmt,sql);
} catch (Exception e) {
//theLog.printDebugInfo("-- delete topics failed ");
} finally {
}
public void deleteByTopicId(String topicId)
- throws StorageObjectFailure {
+ throws DatabaseFailure {
if (topicId == null) {
//theLog.printDebugInfo("-- delete topics failed -- no topic id");
return;
}
//delete all row with content_id=contentId
- String sql = "delete from "+ theTable +" where topic_id=" + topicId;
+ String sql = "delete from "+ mainTable +" where topic_id=" + topicId;
Connection con=null;Statement stmt=null;
try {
- con = getPooledCon();
+ con = obtainConnection();
// should be a preparedStatement because is faster
stmt = con.createStatement();
- ResultSet rs = executeSql(stmt,sql);
+ executeSql(stmt,sql);
}
catch (Exception e) {
logger.error("-- delete topics failed ");
}
}
-
+/**
+ * Returns list of Content for a specific topic
+ * @param topic
+ * @return EntityList
+ * @throws DatabaseFailure
+ */
public EntityList getContent(EntityTopics topic)
- throws StorageObjectFailure {
+ throws DatabaseFailure {
EntityList returnList=null;
if (topic != null) {
String id = topic.getId();
- String select = "select content_id from " + theTable + " where topic_id=" + id;
-
- // execute select statement
- Connection con=null;Statement stmt=null;
try {
- con = getPooledCon();
- // should be a preparedStatement because is faster
- stmt = con.createStatement();
- ResultSet rs = executeSql(stmt,select);
- if (rs!=null) {
- String topicSelect= "id IN (";
- boolean first=true;
- while (rs.next()) {
- if (first==false) topicSelect+=",";
- topicSelect += rs.getString(1);
- first=false;
- }
- topicSelect+=")";
- if (first==false)
- returnList = DatabaseContent.getInstance().selectByWhereClause(topicSelect,-1);
- }
+ ArrayList extraTables = new ArrayList();
+ extraTables.add(mainTable+" cxt");
+ returnList = DatabaseContent.getInstance()
+ .selectByWhereClauseWithExtraTables("c",extraTables,
+ "c.id=cxt.content_id and cxt.topic_id="+id );
}
catch (Exception e) {
- logger.error("-- get contetn failed");
+ logger.error("-- get content failed");
}
- finally { freeConnection(con,stmt);}
}
return returnList;
}
projects / mir.git / blobdiff