- } catch (SQLException sqe){
- throwSQLException(sqe,"selectById"); return null;
- } catch (NumberFormatException e) {
- theLog.printError("ID ist keine Zahl: " + id);
- } finally {
- freeConnection(con,stmt);
- }
-
- return returnEntity;
- }
-
- /**
- * select-Operator um Datensaetze zu bekommen, die key = value erfuellen.
- * @param key Datenbankfeld der Bedingung.
- * @param value Wert die der key anehmen muss.
- * @return EntityList mit den gematchten Entities
- */
-
- public EntityList selectByFieldValue(String aField, String aValue)
- throws StorageObjectException {
-
- return selectByFieldValue(aField, aValue, 0);
- }
-
- /**
- * select-Operator um Datensaetze zu bekommen, die key = value erfuellen.
- * @param key Datenbankfeld der Bedingung.
- * @param value Wert die der key anehmen muss.
- * @param offset Gibt an ab welchem Datensatz angezeigt werden soll.
- * @return EntityList mit den gematchten Entities
- */
-
- public EntityList selectByFieldValue(String aField, String aValue, int offset)
- throws StorageObjectException {
-
- return selectByWhereClause(aField + "=" + aValue, offset);
- }
-
-
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
- * Also offset wird der erste Datensatz genommen.
- *
- * @param wc where-Clause
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectException
- */
- public EntityList selectByWhereClause(String where)
- throws StorageObjectException {
-
- return selectByWhereClause(where, 0);
- }
-
-
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
- *
- * @param wc where-Clause
- * @param offset ab welchem Datensatz.
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectException
- */
- public EntityList selectByWhereClause(String whereClause, int offset)
- throws StorageObjectException {
-
- return selectByWhereClause(whereClause, null, offset);
- }
-
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
- * Also offset wird der erste Datensatz genommen.
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
- *
- * @param wc where-Clause
- * @param ob orderBy-Clause
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectException
- */
-
- public EntityList selectByWhereClause(String where, String order)
- throws StorageObjectException {
-
- return selectByWhereClause(where, order, 0);
- }
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
- * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
- *
- * @param wc where-Clause
- * @param ob orderBy-Clause
- * @param offset ab welchem Datensatz
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectException
- */
-
- public EntityList selectByWhereClause(String whereClause, String orderBy, int offset)
- throws StorageObjectException {
-
- return selectByWhereClause(whereClause, orderBy, offset, defaultLimit);
- }
-
-
- /**
- * select-Operator liefert eine EntityListe mit den gematchten Datensätzen zurück.
- * @param wc where-Clause
- * @param ob orderBy-Clause
- * @param offset ab welchem Datensatz
- * @param limit wieviele Datensätze
- * @return EntityList mit den gematchten Entities
- * @exception StorageObjectException
- */
-
- public EntityList selectByWhereClause(String wc, String ob, int offset, int limit)
- throws StorageObjectException {
-
- // local
- EntityList theReturnList=null;
- Connection con=null;
- Statement stmt=null;
- ResultSet rs;
- int offsetCount = 0;
- int count=0;
-
-
- // build sql-statement
- if (wc != null && wc.length() == 0) {
- wc = null;
- }
- StringBuffer countSql = new StringBuffer("select count(*) from ").append(theTable);
- StringBuffer selectSql = new StringBuffer("select * from ").append(theTable);
- if (wc != null) {
- selectSql.append(" where ").append(wc);
- countSql.append(" where ").append(wc);
- }
- if (ob != null && !(ob.length() == 0)) {
- selectSql.append(" order by ").append(ob);
- }
- if (theAdaptor.hasLimit()) {
- if (limit > -1 && offset > -1) {
- selectSql.append(" limit ");
- if (theAdaptor.reverseLimit()) {
- selectSql.append(limit).append(",").append(offset);
- }
- else {
- selectSql.append(offset).append(",").append(limit);
- }
- }
- }
-
- // execute sql
- try {
- con = getPooledCon();
- stmt = con.createStatement();
- // counting rows
- if (theAdaptor.hasLimit()) {
- rs = executeSql(stmt, countSql.toString());
- if (rs != null) {
- if (rs.next())
- count = rs.getInt(1);
- rs.close();
- }
- else
- theLog.printError("Mh. Konnte nicht zaehlen: " + countSql);
- }
- // hier select
- rs = executeSql(stmt, selectSql.toString());
- if (rs != null) {
- theReturnList = new EntityList();
- if (evaluatedMetaData == false) {
- evalMetaData(rs.getMetaData());
- }
- Entity theResultEntity;
- while (rs.next()) {
- theResultEntity = makeEntityFromResultSet(rs);
- theReturnList.add(theResultEntity);
- offsetCount++;
- }
- rs.close();
- }
- // making entitylist
- if (!(theAdaptor.hasLimit()))
- count = offsetCount;
- if (theReturnList != null) {
- theReturnList.setCount(count);
- theReturnList.setOffset(offset);
- theReturnList.setWhere(wc);
- theReturnList.setOrder(ob);
- if (offset >= limit) {
- theReturnList.setPrevBatch(offset - limit);
- }
- if (offset + offsetCount < count) {
- theReturnList.setNextBatch(offset + limit);
- }
- }
- } catch (SQLException sqe) {
- throwSQLException(sqe, "selectByWhereClause");
- } finally {
- freeConnection(con, stmt);
- }
- return theReturnList;
- }
-
- /**
- * Bastelt aus einer Zeile der Datenbank ein EntityObjekt.
- *
- * @param rs Das ResultSetObjekt.
- * @return Entity Die Entity.
- */
-
- public Entity makeEntityFromResultSet (ResultSet rs) throws StorageObjectException {
- HashMap theResultHash = new HashMap();
- String theResult = null;
- int theType;
- Entity returnEntity = null;
- try {
- int size = metadataFields.size();
- for (int i = 0; i < size; i++) {
- // alle durchlaufen bis nix mehr da
- theType = metadataTypes[i];
- if (theType == java.sql.Types.LONGVARBINARY) {
- InputStream us = rs.getAsciiStream(i + 1);
- if (us != null) {
- InputStreamReader is = new InputStreamReader(us);
- char[] data = new char[32768];
- StringBuffer theResultString = new StringBuffer();
- int len;
- while ((len = is.read(data)) > 0) {
- theResultString.append(data, 0, len);
- }
- is.close();
- theResult = theResultString.toString();
- }
- else {
- theResult = null;
- }
- }
- else {
- theResult = getValueAsString(rs, (i + 1), theType);
- }
- if (theResult != null) {
- theResultHash.put(metadataFields.get(i), theResult);
- }
- }
- if (cache != null && theResultHash.containsKey(thePKeyName) && cache.containsKey((String)theResultHash.get(thePKeyName))) {
- //theLog.printDebugInfo("CACHE: (out) "+ theResultHash.get(thePKeyName)+ " :"+theTable);
- returnEntity = (Entity)cache.get((String)theResultHash.get(thePKeyName));
- }
- else {
- if (theEntityClass != null) {
- returnEntity = (Entity)theEntityClass.newInstance();
- returnEntity.setValues(theResultHash);
- returnEntity.setStorage(myselfDatabase);
- if (cache != null) {
- //theLog.printDebugInfo("CACHE: ( in) " + returnEntity.getId() + " :"+theTable);
- cache.put(returnEntity.getId(), returnEntity);
- }
- }
- else {
- throwStorageObjectException("Interner Fehler theEntityClass nicht gesetzt!");
- }
- }
- } // try
- catch (IllegalAccessException e) {
- throwStorageObjectException("Kein Zugriff! -- " + e.toString());
- } catch (IOException e) {
- throwStorageObjectException("IOException! -- " + e.toString());
- } catch (InstantiationException e) {
- throwStorageObjectException("Keine Instantiiierung! -- " + e.toString());
- } catch (SQLException sqe) {
- throwSQLException(sqe, "makeEntityFromResultSet");
- return null;
- }
- return returnEntity;
- }
-
- /**
- * insert-Operator: fügt eine Entity in die Tabelle ein. Eine Spalte WEBDB_CREATE
- * wird automatisch mit dem aktuellen Datum gefuellt.
- *
- * @param theEntity
- * @return der Wert des Primary-keys der eingefügten Entity
- */
- public String insert (Entity theEntity) throws StorageObjectException {
- String returnId = "0";
- Connection con = null;
- PreparedStatement pstmt = null;
- //cache
- invalidatePopupCache();
- try {
- HashMap theEntityValues = theEntity.getValues();
- ArrayList streamedInput = theEntity.streamedInput();
- StringBuffer f = new StringBuffer();
- StringBuffer v = new StringBuffer();
- String aField, aValue;
- boolean firstField = true;
- // make sql-string
- for (int i = 0; i < getFields().size(); i++) {
- aField = (String)getFields().get(i);
- if (!aField.equals(thePKeyName)) {
- aValue = null;
- // sonderfaelle
- if (aField.equals("webdb_create")) {
- aValue = "NOW()";
- }
- else {
- if (streamedInput != null && streamedInput.contains(aField)) {
- aValue = "?";
- }
- else {
- if (theEntityValues.containsKey(aField)) {
- aValue = "'" + StringUtil.quote((String)theEntityValues.get(aField))
- + "'";
- }
- }
- }
- // wenn Wert gegeben, dann einbauen
- if (aValue != null) {
- if (firstField == false) {
- f.append(",");
- v.append(",");
- }
- else {
- firstField = false;
- }
- f.append(aField);
- v.append(aValue);
- }
- }
- } // end for
- // insert into db
- StringBuffer sqlBuf = new StringBuffer("insert into ").append(theTable).append("(").append(f).append(") values (").append(v).append(")");
- String sql = sqlBuf.toString();
- theLog.printInfo("INSERT: " + sql);
- con = getPooledCon();
- con.setAutoCommit(false);
- pstmt = con.prepareStatement(sql);
- if (streamedInput != null) {
- for (int i = 0; i < streamedInput.size(); i++) {
- String inputString = (String)theEntityValues.get(streamedInput.get(i));
- pstmt.setBytes(i + 1, inputString.getBytes());
- }
- }
- pstmt.execute();
- pstmt = con.prepareStatement(theAdaptor.getLastInsertSQL((Database)myselfDatabase));
- ResultSet rs = pstmt.executeQuery();
- rs.next();
- returnId = rs.getString(1);
- theEntity.setId(returnId);
- } catch (SQLException sqe) {
- throwSQLException(sqe, "insert");
- } finally {
- try {
- con.setAutoCommit(true);
- } catch (Exception e) {
- ;
- }
- freeConnection(con, pstmt);
- }
- return returnId;
- }
-
- /**
- * update-Operator: aktualisiert eine Entity. Eine Spalte WEBDB_LASTCHANGE
- * wird automatisch mit dem aktuellen Datum gefuellt.
- *
- * @param theEntity
- */
- public void update (Entity theEntity) throws StorageObjectException {
- Connection con = null;
- PreparedStatement pstmt = null;
- ArrayList streamedInput = theEntity.streamedInput();
- HashMap theEntityValues = theEntity.getValues();
- String id = theEntity.getId();
- String aField;
- StringBuffer fv = new StringBuffer();
- boolean firstField = true;
- //cache
- invalidatePopupCache();
- // build sql statement
- for (int i = 0; i < getFields().size(); i++) {
- aField = (String)metadataFields.get(i);
- // only normal cases
- if (!(aField.equals(thePKeyName) || aField.equals("webdb_create") ||
- aField.equals("webdb_lastchange") || (streamedInput != null && streamedInput.contains(aField)))) {
- if (theEntityValues.containsKey(aField)) {
- if (firstField == false) {
- fv.append(", ");
- }
- else {
- firstField = false;
- }
- fv.append(aField).append("='").append(StringUtil.quote((String)theEntityValues.get(aField))).append("'");
- }
- }
- }
- StringBuffer sql = new StringBuffer("update ").append(theTable).append(" set ").append(fv);
- // exceptions
- if (metadataFields.contains("webdb_lastchange")) {
- sql.append(",webdb_lastchange=NOW()");
- }
- if (streamedInput != null) {
- for (int i = 0; i < streamedInput.size(); i++) {
- sql.append(",").append(streamedInput.get(i)).append("=?");
- }
- }
- sql.append(" where id=").append(id);
- theLog.printInfo("UPDATE: " + sql);
- // execute sql
- try {
- con = getPooledCon();
- con.setAutoCommit(false);
- pstmt = con.prepareStatement(sql.toString());
- if (streamedInput != null) {
- for (int i = 0; i < streamedInput.size(); i++) {
- String inputString = (String)theEntityValues.get(streamedInput.get(i));
- pstmt.setBytes(i + 1, inputString.getBytes());
- }
- }
- pstmt.executeUpdate();
- } catch (SQLException sqe) {
- throwSQLException(sqe, "update");
- } finally {
- try {
- con.setAutoCommit(true);
- } catch (Exception e) {
- ;
- }
- freeConnection(con, pstmt);
- }
- }
-
- /*
- * delete-Operator
- * @param id des zu loeschenden Datensatzes
- * @return boolean liefert true zurueck, wenn loeschen erfolgreich war.
- */
- public boolean delete (String id) throws StorageObjectException {
- Statement stmt = null;
- Connection con = null;
- String sql;
- int res = 0;
- // loeschen des caches
- invalidatePopupCache();
- sql = "delete from " + theTable + " where " + thePKeyName + "='" + id +
- "'";
- theLog.printInfo("DELETE " + sql);
- try {
- con = getPooledCon();
- stmt = con.createStatement();
- res = stmt.executeUpdate(sql);
- } catch (SQLException sqe) {
- throwSQLException(sqe, "delete");
- } finally {
- freeConnection(con, stmt);
- }
- if (cache != null) {
- theLog.printInfo("CACHE: deleted " + id);
- cache.remove(id);
- }
- return (res > 0) ? true : false;
- }
-
- /* noch nicht implementiert.
- * @return immer false
- */
- public boolean delete (EntityList theEntityList) {
- invalidatePopupCache();
- return false;
- }
-
- /**
- * Diese Methode sollte ueberschrieben werden, wenn fuer die abgeleitete Database-Klasse
- * eine SimpleList mit Standard-Popupdaten erzeugt werden koennen soll.
- * @return null
- */
- public SimpleList getPopupData () {
- return null;
- }
-
- /**
- * Holt Daten fuer Popups.
- * @param name Name des Feldes.
- * @param hasNullValue Wenn true wird eine leerer Eintrag fuer die Popups erzeugt.
- * @return SimpleList Gibt freemarker.template.SimpleList zurueck.
- */
- public SimpleList getPopupData (String name, boolean hasNullValue) {
- return getPopupData(name, hasNullValue, null);
- }
-
- /**
- * Holt Daten fuer Popups.
- * @param name Name des Feldes.
- * @param hasNullValue Wenn true wird eine leerer Eintrag fuer die Popups erzeugt.
- * @param where Schraenkt die Selektion der Datensaetze ein.
- * @return SimpleList Gibt freemarker.template.SimpleList zurueck.
- */
- public SimpleList getPopupData (String name, boolean hasNullValue, String where) {
- return getPopupData(name, hasNullValue, where, null);
- }
-
- /**
- * Holt Daten fuer Popups.
- * @param name Name des Feldes.
- * @param hasNullValue Wenn true wird eine leerer Eintrag fuer die Popups erzeugt.
- * @param where Schraenkt die Selektion der Datensaetze ein.
- * @param order Gibt ein Feld als Sortierkriterium an.
- * @return SimpleList Gibt freemarker.template.SimpleList zurueck.
- */
- public SimpleList getPopupData (String name, boolean hasNullValue, String where,
- String order) {
- // caching
- if (hasPopupCache && popupCache != null)
- return popupCache;
- SimpleList simpleList = null;
- Connection con = null;
- Statement stmt = null;
- // build sql
- StringBuffer sql = new StringBuffer("select ").append(thePKeyName).append(",").append(name).append(" from ").append(theTable);
- if (where != null && !(where.length() == 0))
- sql.append(" where ").append(where);
- sql.append(" order by ");
- if (order != null && !(order.length() == 0))
- sql.append(order);
- else
- sql.append(name);
- // execute sql
- try {
- con = getPooledCon();
- stmt = con.createStatement();
- ResultSet rs = executeSql(stmt, sql.toString());
- if (rs != null) {
- if (evaluatedMetaData == false)
- get_meta_data();
- simpleList = new SimpleList();
- SimpleHash popupDict;
- if (hasNullValue) {
- popupDict = new SimpleHash();
- popupDict.put("key", "");
- popupDict.put("value", "--");
- simpleList.add(popupDict);
- }
- while (rs.next()) {
- popupDict = new SimpleHash();
- popupDict.put("key", getValueAsString(rs, 1, thePKeyType));
- popupDict.put("value", rs.getString(2));
- simpleList.add(popupDict);
- }
- rs.close();
- }
- } catch (Exception e) {
- theLog.printDebugInfo(e.toString());
- } finally {
- freeConnection(con, stmt);
- }
- if (hasPopupCache) {
- popupCache = simpleList;
- }
- return simpleList;
- }
-
- /**
- * Liefert alle Daten der Tabelle als SimpleHash zurueck. Dies wird verwandt,
- * wenn in den Templates ein Lookup-Table benoetigt wird. Sollte nur bei kleinen
- * Tabellen Verwendung finden.
- * @return SimpleHash mit den Tabellezeilen.
- */
- public SimpleHash getHashData () {
- if (hashCache == null) {
- try {
- hashCache = HTMLTemplateProcessor.makeSimpleHash(selectByWhereClause("",
- -1));
- } catch (StorageObjectException e) {
- theLog.printDebugInfo(e.toString());
- }
- }
- return hashCache;
- }
-
- /* invalidates the popupCache
- */
- private void invalidatePopupCache () {
-
- /** @todo invalidates toooo much */
- popupCache = null;
- hashCache = null;
- }
-
- /**
- * Diese Methode fuehrt den Sqlstring <i>sql</i> aus und timed im Logfile.
- * @param stmt Statemnt
- * @param sql Sql-String
- * @return ResultSet
- * @exception StorageObjectException, SQLException
- */
- public ResultSet executeSql (Statement stmt, String sql) throws StorageObjectException,
- SQLException {
- long startTime = (new java.util.Date()).getTime();
- ResultSet rs = stmt.executeQuery(sql);
- theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: "
- + sql);
- return rs;
- }
-
- /**
- * Fuehrt Statement stmt aus und liefert Resultset zurueck. Das SQL-Statment wird
- * getimed und geloggt.
- * @param stmt PreparedStatement mit der SQL-Anweisung
- * @return Liefert ResultSet des Statements zurueck.
- * @exception StorageObjectException, SQLException
- */
- public ResultSet executeSql (PreparedStatement stmt) throws StorageObjectException,
- SQLException {
- long startTime = (new java.util.Date()).getTime();
- ResultSet rs = stmt.executeQuery();
- theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms.");
- return rs;
- }
-
- /**
- * returns the number of rows in the table
- */
- public int getSize(String where)
- throws SQLException,StorageObjectException
- {
- long startTime = (new java.util.Date()).getTime();
- String sql = "SELECT count(*) FROM "+ theTable + " where " + where;
- //theLog.printDebugInfo("trying: "+ sql);
- Connection con = null;
- Statement stmt = null;
- int result = 0;
-
- try {
- con = getPooledCon();
- stmt = con.createStatement();
- ResultSet rs = executeSql(stmt,sql);
- while(rs.next()){
- result = rs.getInt(1);
- }
- } catch (SQLException e) {
- theLog.printError(e.toString());
- } finally {
- freeConnection(con,stmt);
- }
- theLog.printInfo(theTable + " has "+ result +" rows where " + where);
- theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql);
- return result;
- }
-
- public int executeUpdate(Statement stmt, String sql)
- throws StorageObjectException, SQLException
- {
- long startTime = (new java.util.Date()).getTime();
- //theLog.printDebugInfo("trying: "+ sql);
- int rs = stmt.executeUpdate(sql);
- theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql);
- return rs;
- }
-
- public int executeUpdate(String sql)
- throws StorageObjectException, SQLException
- {
- int result=-1;
- long startTime = (new java.util.Date()).getTime();
- Connection con=null;PreparedStatement pstmt=null;
- try {
- con=getPooledCon();
- pstmt = con.prepareStatement(sql);
- result = pstmt.executeUpdate();
- }
- catch (Exception e) {theLog.printDebugInfo("settimage :: setImage gescheitert: "+e.toString());}
- finally { freeConnection(con,pstmt); }
- theLog.printInfo((new java.util.Date().getTime() - startTime) + "ms. for: " + sql);
- return result;
- }
-
- /**
- * Wertet ResultSetMetaData aus und setzt interne Daten entsprechend
- * @param md ResultSetMetaData
- * @exception StorageObjectException
- */
- private void evalMetaData (ResultSetMetaData md) throws StorageObjectException {
- this.evaluatedMetaData = true;
- this.metadataFields = new ArrayList();
- this.metadataLabels = new ArrayList();
- this.metadataNotNullFields = new ArrayList();
- try {
- int numFields = md.getColumnCount();
- this.metadataTypes = new int[numFields];
- String aField;
- int aType;
- for (int i = 1; i <= numFields; i++) {
- aField = md.getColumnName(i);
- metadataFields.add(aField);
- metadataLabels.add(md.getColumnLabel(i));
- aType = md.getColumnType(i);
- metadataTypes[i - 1] = aType;
- if (aField.equals(thePKeyName)) {
- thePKeyType = aType;
- }
- if (md.isNullable(i) == md.columnNullable) {
- metadataNotNullFields.add(aField);
- }
- }
- } catch (SQLException e) {
- throwSQLException(e, "evalMetaData");
- }
- }
-
- /**
- * Wertet die Metadaten eines Resultsets fuer eine Tabelle aus,
- * um die alle Columns und Typen einer Tabelle zu ermitteln.
- */
- private void get_meta_data () throws StorageObjectException {
- Connection con = null;
- PreparedStatement pstmt = null;
- String sql = "select * from " + theTable + " where 0=1";
- try {
- con = getPooledCon();
- pstmt = con.prepareStatement(sql);
- theLog.printInfo("METADATA: " + sql);
- ResultSet rs = pstmt.executeQuery();
- evalMetaData(rs.getMetaData());
- rs.close();
- } catch (SQLException e) {
- throwSQLException(e, "get_meta_data");
- } finally {
- freeConnection(con, pstmt);
- }
- }
-
- /**
- * Datenbankverbindung wird geschlossen
- */
- public void disconnectPool () {
- try {
- myBroker.destroy(100);
- } catch (SQLException sqe) {
- ;
- }
- }
-
- /**
- * Liefert ein Connection-Objekt aus dem ConnectionPool.
- * @return Connection Objekt.
- */
- public Connection getPooledCon () throws StorageObjectException {
- if (myBroker != null) {
- Connection con = myBroker.getConnection();
- if (con != null)
- return con;
- }
- throw new StorageObjectException("KEINE VERBINDUNG ZUR DATENBANK");
- }
-
- /**
- * Connection und StatementObjekt werden geschlossen und an den Connectionpool
- * zurückgeben
- * @param con Connection zur Datenbank
- * @param stmt Statement-Objekt
- */
- public void freeConnection (Connection con, Statement stmt) {
- try {
- if (stmt != null)
- stmt.close();
- } catch (SQLException e1) {
- theLog.printDebugInfo(e1.toString());
- }
- if (con != null)
- myBroker.freeConnection(con);
- else
- theLog.printDebugInfo("Con was null!");
- }
-
- /**
- * Wertet SQLException aus und wirft dannach eine StorageObjectException
- * @param sqe SQLException
- * @param wo Funktonsname, in der die SQLException geworfen wurde
- * @exception StorageObjectException
- */
- void throwSQLException (SQLException sqe, String wo) throws StorageObjectException {
- String state = "";
- String message = "";
- int vendor = 0;
- if (sqe != null) {
- state = sqe.getSQLState();
- message = sqe.getMessage();
- vendor = sqe.getErrorCode();
- }
- theLog.printError(state + ": " + vendor + " : " + message + " Funktion: "
- + wo);
- throw new StorageObjectException((sqe == null) ? "undefined sql exception" :
- sqe.toString());
- }
-
- /**
- * Loggt Fehlermeldung mit dem Parameter Message und wirft dannach eine StorageObjectException
- * @param message Nachricht mit dem Fehler
- * @exception StorageObjectException
- */
- void throwStorageObjectException (String message) throws StorageObjectException {
- theLog.printError(message);
- throw new StorageObjectException(message);
- }
-}
+ }
+
+ return outValue;
+ }
+
+ /**
+ * select-Operator um einen Datensatz zu bekommen.
+ * @param id Primaerschluessel des Datensatzes.
+ * @return liefert EntityObject des gefundenen Datensatzes oder null.
+ */
+ public Entity selectById(String id) throws StorageObjectExc {
+ if ((id == null) || id.equals("")) {
+ throw new StorageObjectExc("Database.selectById: Missing id");
+ }
+
+ // ask object store for object
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
+ String uniqueId = id;
+
+ if (entityClass.equals(StorableObjectEntity.class)) {
+ uniqueId += ("@" + mainTable);
+ }
+
+ StoreIdentifier search_sid = new StoreIdentifier(entityClass, uniqueId);
+ logger.debug("CACHE: (dbg) looking for sid " + search_sid.toString());
+
+ Entity hit = (Entity) o_store.use(search_sid);
+
+ if (hit != null) {
+ return hit;
+ }
+ }
+
+ Statement stmt = null;
+ Connection con = obtainConnection();
+ Entity returnEntity = null;
+
+ try {
+ ResultSet rs;
+
+ /** todo better prepared statement */
+ String selectSql =
+ "select * from " + mainTable + " where " + primaryKeyField + "=" + id;
+ stmt = con.createStatement();
+ rs = executeSql(stmt, selectSql);
+
+ if (rs != null) {
+ if (rs.next()) {
+ returnEntity = makeEntityFromResultSet(rs);
+ }
+ else {
+ logger.warn("No data for id: " + id + " in table " + mainTable);
+ }
+
+ rs.close();
+ }
+ else {
+ logger.warn("No Data for Id " + id + " in Table " + mainTable);
+ }
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "selectById");
+ return null;
+ }
+ catch (NumberFormatException e) {
+ logger.error("ID is no number: " + id);
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+
+ return returnEntity;
+ }
+
+ /**
+ * This method makes it possible to make selects across multiple tables
+ *
+ * @param mainTablePrefix prefix for the mainTable
+ * @param extraTables a vector of tables for relational select
+ * @param aWhereClause whereClause
+ * @return EntityList of selected Objects
+ * @throws StorageObjectFailure
+ */
+
+ public EntityList selectByWhereClauseWithExtraTables(String mainTablePrefix,
+ List extraTables, String aWhereClause )
+ throws StorageObjectFailure {
+ return selectByWhereClause( mainTablePrefix, extraTables, aWhereClause, "", 0, defaultLimit);
+ }
+
+ public EntityList selectByFieldValue(String aField, String aValue) throws StorageObjectFailure {
+ return selectByFieldValue(aField, aValue, 0);
+ }
+
+ public EntityList selectByFieldValue(String aField, String aValue, int offset) throws StorageObjectFailure {
+ return selectByWhereClause(aField + "='" + JDBCStringRoutines.escapeStringLiteral(aValue)+"'", offset);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Also offset wird der erste Datensatz genommen.
+ *
+ * @param where where-Clause
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String where) throws StorageObjectFailure {
+ return selectByWhereClause(where, 0);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
+ *
+ * @param whereClause where-Clause
+ * @param offset ab welchem Datensatz.
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String whereClause, int offset) throws StorageObjectFailure {
+ return selectByWhereClause(whereClause, null, offset);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Also offset wird der erste Datensatz genommen.
+ * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
+ *
+ * @param where where-Clause
+ * @param order orderBy-Clause
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String where, String order) throws StorageObjectFailure {
+ return selectByWhereClause(where, order, 0);
+ }
+
+ public EntityList selectByWhereClause(String mainTablePrefix, List extraTables, String where, String order) throws StorageObjectFailure {
+ return selectByWhereClause(mainTablePrefix, extraTables, where, order, 0, defaultLimit);
+ }
+
+ /**
+ * select-Operator liefert eine EntityListe mit den gematchten Datens?tzen zur?ck.
+ * Als maximale Anzahl wird das Limit auf der Konfiguration genommen.
+ *
+ * @param whereClause where-Clause
+ * @param orderBy orderBy-Clause
+ * @param offset ab welchem Datensatz
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String whereClause, String orderBy, int offset) throws StorageObjectFailure {
+ return selectByWhereClause(whereClause, orderBy, offset, defaultLimit);
+ }
+
+ /**
+ * select-Operator returns EntityList with matching rows in Database.
+ * @param aWhereClause where-Clause
+ * @param anOrderByClause orderBy-Clause
+ * @param offset ab welchem Datensatz
+ * @param limit wieviele Datens?tze
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(String aWhereClause, String anOrderByClause,
+ int offset, int limit) throws StorageObjectFailure {
+ return selectByWhereClause("", null, aWhereClause, anOrderByClause, offset, limit);
+ }
+
+
+ /**
+ * select-Operator returns EntityList with matching rows in Database.
+ * @param aWhereClause where-Clause
+ * @param anOrderByClause orderBy-Clause
+ * @param anOffset ab welchem Datensatz
+ * @param aLimit wieviele Datens?tze
+ * @return EntityList mit den gematchten Entities
+ * @exception StorageObjectFailure
+ */
+ public EntityList selectByWhereClause(
+ String aMainTablePrefix, List anExtraTables,
+ String aWhereClause, String anOrderByClause,
+ int anOffset, int aLimit) throws StorageObjectFailure {
+
+ // TODO get rid of emtpy Strings in anExtraTables
+ // make anExtraTables null, if single empty String in it
+ // cause StringUtil.splitString puts in emptyString
+
+ if (anExtraTables!=null && ((String) anExtraTables.get(0)).trim().equals("")){
+ anExtraTables=null;
+ }
+
+ String useTable = mainTable;
+ String selection = "*";
+
+ if (aMainTablePrefix != null && aMainTablePrefix.trim().length() > 0) {
+ useTable += " " + aMainTablePrefix;
+ selection = aMainTablePrefix.trim() + ".*";
+ }
+
+ // check o_store for entitylist
+ // only if no relational select
+ if (anExtraTables==null) {
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
+ StoreIdentifier searchSid = new StoreIdentifier(entityClass,
+ StoreContainerType.STOC_TYPE_ENTITYLIST,
+ StoreUtil.getEntityListUniqueIdentifierFor(mainTable,
+ aWhereClause, anOrderByClause, anOffset, aLimit));
+ EntityList hit = (EntityList) o_store.use(searchSid);
+
+ if (hit != null) {
+ return hit;
+ }
+ }
+ }
+
+ // local
+ EntityList theReturnList = null;
+ Connection connection = null;
+ Statement statement = null;
+ ResultSet resultSet;
+
+ // build sql-statement
+
+ if ((aWhereClause != null) && (aWhereClause.trim().length() == 0)) {
+ aWhereClause = null;
+ }
+
+ StringBuffer selectSql =
+ new StringBuffer("select "+selection+" from ").append(useTable);
+
+ // append extratables, if necessary
+ if (anExtraTables!=null) {
+ for (int i=0;i < anExtraTables.size();i++) {
+ if (!anExtraTables.get(i).equals("")) {
+ selectSql.append( ", " + anExtraTables.get(i));
+ }
+ }
+ }
+
+ if (aWhereClause != null) {
+ selectSql.append(" where ").append(aWhereClause);
+ }
+
+ if ((anOrderByClause != null) && !(anOrderByClause.trim().length() == 0)) {
+ selectSql.append(" order by ").append(anOrderByClause);
+ }
+
+ if ((aLimit > -1) && (anOffset > -1)) {
+ selectSql.append(" LIMIT ").append(aLimit+1).append(" OFFSET ").append(anOffset);
+ }
+
+ // execute sql
+ try {
+ connection = obtainConnection();
+ statement = connection.createStatement();
+ boolean hasMore = false;
+
+ // selecting...
+ resultSet = executeSql(statement, selectSql.toString());
+
+ if (resultSet != null) {
+ theReturnList = new EntityList();
+ Entity theResultEntity;
+ int position = 0;
+ while (((aLimit == -1) || (position<aLimit)) && resultSet.next()) {
+ theResultEntity = makeEntityFromResultSet(resultSet);
+ theReturnList.add(theResultEntity);
+ position++;
+ }
+ hasMore = resultSet.next();
+ resultSet.close();
+ }
+
+ if (theReturnList != null) {
+ // now we decide if we have to know an overall count...
+ theReturnList.setOffset(anOffset);
+ theReturnList.setWhere(aWhereClause);
+ theReturnList.setOrder(anOrderByClause);
+ theReturnList.setStorage(this);
+ theReturnList.setLimit(aLimit);
+
+ if (hasMore) {
+ theReturnList.setNextBatch(anOffset + aLimit);
+ }
+
+ if (anExtraTables==null && StoreUtil.extendsStorableEntity(entityClass)) {
+ StoreIdentifier sid = theReturnList.getStoreIdentifier();
+ logger.debug("CACHE (add): " + sid.toString());
+ o_store.add(sid);
+ }
+ }
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "selectByWhereClause");
+ }
+ finally {
+ try {
+ if (connection != null) {
+ freeConnection(connection, statement);
+ }
+ } catch (Throwable t) {
+ }
+ }
+
+ return theReturnList;
+ }
+
+ private Entity makeEntityFromResultSet(ResultSet rs)
+ throws StorageObjectFailure {
+ Map theResultHash = new HashMap();
+ String theResult = null;
+ int type;
+ Entity returnEntity = null;
+
+ try {
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
+ StoreIdentifier searchSid = StorableObjectEntity.getStoreIdentifier(this,
+ entityClass, rs);
+ Entity hit = (Entity) o_store.use(searchSid);
+ if (hit != null) return hit;
+ }
+
+ for (int i = 0; i < getFieldNames().size(); i++) {
+ // alle durchlaufen bis nix mehr da
+ type = fieldTypes[i];
+
+ if (type == java.sql.Types.LONGVARBINARY) {
+ InputStreamReader is =
+ (InputStreamReader) rs.getCharacterStream(i + 1);
+
+ if (is != null) {
+ char[] data = new char[32768];
+ StringBuffer theResultString = new StringBuffer();
+ int len;
+
+ while ((len = is.read(data)) > 0) {
+ theResultString.append(data, 0, len);
+ }
+
+ is.close();
+ theResult = theResultString.toString();
+ }
+ else {
+ theResult = null;
+ }
+ }
+ else {
+ theResult = getValueAsString(rs, (i + 1), type);
+ }
+
+ if (theResult != null) {
+ theResultHash.put(getFieldNames().get(i), theResult);
+ }
+ }
+
+ if (entityClass != null) {
+ returnEntity = createNewEntity();
+ returnEntity.setFieldValues(theResultHash);
+
+ if (returnEntity instanceof StorableObject) {
+ logger.debug("CACHE: ( in) " + returnEntity.getId() + " :" + mainTable);
+ o_store.add(((StorableObject) returnEntity).getStoreIdentifier());
+ }
+ } else {
+ throwStorageObjectException("Internal Error: entityClass not set!");
+ }
+ }
+ catch (IOException e) {
+ throwStorageObjectException("IOException! -- " + e.getMessage());
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "makeEntityFromResultSet");
+
+ return null;
+ }
+
+ return returnEntity;
+ }
+
+ /**
+ * Inserts an entity into the database.
+ *
+ * @param anEntity
+ * @return der Wert des Primary-keys der eingef?gten Entity
+ */
+ public String insert(Entity anEntity) throws StorageObjectFailure {
+ invalidateStore();
+
+ String returnId = null;
+ Connection con = null;
+ PreparedStatement pstmt = null;
+
+ try {
+ StringBuffer f = new StringBuffer();
+ StringBuffer v = new StringBuffer();
+ String aField;
+ String aValue;
+ boolean firstField = true;
+
+ // make sql-string
+ for (int i = 0; i < getFieldNames().size(); i++) {
+ aField = (String) getFieldNames().get(i);
+
+ if (!aField.equals(primaryKeyField)) {
+ aValue = null;
+
+ // exceptions
+ if (!anEntity.hasFieldValue(aField) && (
+ aField.equals("webdb_create") ||
+ aField.equals("webdb_lastchange"))) {
+ aValue = "NOW()";
+ }
+ else {
+ if (anEntity.hasFieldValue(aField)) {
+ aValue =
+ "'" +
+ JDBCStringRoutines.escapeStringLiteral(anEntity.getFieldValue(aField)) + "'";
+ }
+ }
+
+ // wenn Wert gegeben, dann einbauen
+ if (aValue != null) {
+ if (firstField == false) {
+ f.append(",");
+ v.append(",");
+ }
+ else {
+ firstField = false;
+ }
+
+ f.append(aField);
+ v.append(aValue);
+ }
+ }
+ }
+ // end for
+
+ // insert into db
+ StringBuffer sqlBuf =
+ new StringBuffer("insert into ").append(mainTable).append("(").append(f)
+ .append(") values (").append(v).append(")");
+ String sql = sqlBuf.toString();
+
+ logQueryBefore(sql);
+ con = obtainConnection();
+ con.setAutoCommit(false);
+ pstmt = con.prepareStatement(sql);
+
+ int ret = pstmt.executeUpdate();
+
+ if (ret == 0) {
+ //insert failed
+ return null;
+ }
+
+// pstmt = con.prepareStatement("select currval('" + + "_id_seq')");
+
+ returnId = getLatestInsertedId(con);
+ anEntity.setId(returnId);
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "insert");
+ }
+ finally {
+ try {
+ con.setAutoCommit(true);
+ }
+ catch (Exception e) {
+ }
+
+ freeConnection(con, pstmt);
+ }
+
+ /** todo store entity in o_store */
+ return returnId;
+ }
+
+ /**
+ * Updates an entity in the database
+ *
+ * @param theEntity
+ */
+ public void update(Entity theEntity) throws StorageObjectFailure {
+ Connection con = null;
+ PreparedStatement pstmt = null;
+
+ /** todo this is stupid: why do we prepare statement, when we
+ * throw it away afterwards. should be regular statement
+ * update/insert could better be one routine called save()
+ * that chooses to either insert or update depending if we
+ * have a primary key in the entity. i don't know if we
+ * still need the streamed input fields. // rk */
+
+ /** todo extension: check if Entity did change, otherwise we don't need
+ * the roundtrip to the database */
+ /** invalidating corresponding entitylists in o_store*/
+
+ invalidateStore();
+
+ String id = theEntity.getId();
+ String aField;
+ StringBuffer fv = new StringBuffer();
+ boolean firstField = true;
+
+ // build sql statement
+ for (int i = 0; i < getFieldNames().size(); i++) {
+ aField = (String) getFieldNames().get(i);
+
+ // only normal cases
+ // todo if entity.hasFieldValue returns false, then the value should be stored as null
+ if (!(aField.equals(primaryKeyField) ||
+ aField.equals("webdb_create") ||
+ aField.equals("webdb_lastchange"))) {
+ if (theEntity.hasFieldValue(aField)) {
+ if (firstField == false) {
+ fv.append(", ");
+ }
+ else {
+ firstField = false;
+ }
+
+ fv.append(aField).append("='").append(JDBCStringRoutines.escapeStringLiteral(theEntity.getFieldValue(aField))).append("'");
+
+ // fv.append(aField).append("='").append(StringUtil.quote((String)theEntity.getFieldValue(aField))).append("'");
+ }
+ }
+ }
+
+ StringBuffer sql =
+ new StringBuffer("update ").append(mainTable).append(" set ").append(fv);
+
+ // exceptions
+ if (getFieldNames().contains("webdb_lastchange")) {
+ sql.append(",webdb_lastchange=NOW()");
+ }
+
+ // special case: the webdb_create requires the field in yyyy-mm-dd HH:mm
+ // format so anything extra will be ignored. -mh
+ if (getFieldNames().contains("webdb_create") &&
+ theEntity.hasFieldValue("webdb_create")) {
+ // minimum of 10 (yyyy-mm-dd)...
+ if (theEntity.getFieldValue("webdb_create").length() >= 10) {
+ String dateString = theEntity.getFieldValue("webdb_create");
+
+ // if only 10, then add 00:00 so it doesn't throw a ParseException
+ if (dateString.length() == 10) {
+ dateString = dateString + " 00:00";
+ }
+
+ // TimeStamp stuff
+ try {
+ java.util.Date d = userInputDateFormat.parse(dateString);
+// Timestamp tStamp = new Timestamp(d.getTime());
+ sql.append(",webdb_create='" + JDBCStringRoutines.formatDate(d) + "'");
+ }
+ catch (ParseException e) {
+ throw new StorageObjectFailure(e);
+ }
+ }
+ }
+
+ sql.append(" where id=").append(id);
+ logQueryBefore(sql.toString());
+
+ try {
+ con = obtainConnection();
+ con.setAutoCommit(false);
+ pstmt = con.prepareStatement(sql.toString());
+
+ pstmt.executeUpdate();
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "update");
+ }
+ finally {
+ try {
+ con.setAutoCommit(true);
+ }
+ catch (Exception e) {
+
+
+ }
+
+ freeConnection(con, pstmt);
+ }
+ }
+
+ /*
+ * delete-Operator
+ * @param id des zu loeschenden Datensatzes
+ * @return boolean liefert true zurueck, wenn loeschen erfolgreich war.
+ */
+ public boolean delete(String id) throws StorageObjectFailure {
+ // ostore send notification
+ if (StoreUtil.extendsStorableEntity(entityClass)) {
+ String uniqueId = id;
+
+ if (entityClass.equals(StorableObjectEntity.class)) {
+ uniqueId += ("@" + mainTable);
+ }
+
+ logger.debug("CACHE: (del) " + id);
+
+ StoreIdentifier search_sid =
+ new StoreIdentifier(entityClass,
+ StoreContainerType.STOC_TYPE_ENTITY, uniqueId);
+ o_store.invalidate(search_sid);
+ }
+
+ /** todo could be prepared Statement */
+ Statement stmt = null;
+ Connection con = null;
+ int res = 0;
+ String sql =
+ "delete from " + mainTable + " where " + primaryKeyField + "='" + id + "'";
+
+ logQueryBefore(sql);
+ try {
+ con = obtainConnection();
+ stmt = con.createStatement();
+ res = stmt.executeUpdate(sql);
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "delete");
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+
+ invalidateStore();
+
+ return (res > 0) ? true : false;
+ }
+
+ /**
+ * Deletes entities based on a where clause
+ */
+ public int deleteByWhereClause(String aWhereClause) throws StorageObjectFailure {
+ invalidateStore();
+
+ Statement stmt = null;
+ Connection con = null;
+ int res = 0;
+ String sql =
+ "delete from " + mainTable + " where " + aWhereClause;
+
+ //theLog.printInfo("DELETE " + sql);
+ try {
+ con = obtainConnection();
+ stmt = con.createStatement();
+ res = stmt.executeUpdate(sql);
+ }
+ catch (SQLException sqe) {
+ throwSQLException(sqe, "delete");
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+
+ return res;
+ }
+
+ /* noch nicht implementiert.
+ * @return immer false
+ */
+ public boolean delete(EntityList theEntityList) {
+ return false;
+ }
+
+ /**
+ * Diese Methode fuehrt den Sqlstring <i>sql</i> aus und timed im Logfile.
+ * @param stmt Statemnt
+ * @param sql Sql-String
+ */
+ public ResultSet executeSql(Statement stmt, String sql)
+ throws StorageObjectFailure, SQLException {
+ ResultSet rs;
+ logQueryBefore(sql);
+ long startTime = System.currentTimeMillis();
+ try {
+ rs = stmt.executeQuery(sql);
+
+ logQueryAfter(sql, (System.currentTimeMillis() - startTime));
+ }
+ catch (SQLException e) {
+ logQueryError(sql, (System.currentTimeMillis() - startTime), e);
+ throw e;
+ }
+
+ return rs;
+ }
+
+ private Map processRow(ResultSet aResultSet) throws StorageObjectFailure {
+ try {
+ Map result = new HashMap();
+ ResultSetMetaData metaData = aResultSet.getMetaData();
+ int nrColumns = metaData.getColumnCount();
+ for (int i=0; i<nrColumns; i++) {
+ result.put(metaData.getColumnName(i+1), getValueAsString(aResultSet, i+1, metaData.getColumnType(i+1)));
+ }
+
+ return result;
+ }
+ catch (Throwable e) {
+ throw new StorageObjectFailure(e);
+ }
+ }
+
+ /**
+ * Executes 1 sql statement and returns the results as a <code>List</code> of
+ * <code>Map</code>s
+ */
+ public List executeFreeSql(String sql, int aLimit) throws StorageObjectFailure, StorageObjectExc {
+ Connection connection = null;
+ Statement statement = null;
+ try {
+ List result = new ArrayList();
+ connection = obtainConnection();
+ statement = connection.createStatement();
+ ResultSet resultset = executeSql(statement, sql);
+ try {
+ while (resultset.next() && result.size() < aLimit) {
+ result.add(processRow(resultset));
+ }
+ }
+ finally {
+ resultset.close();
+ }
+
+ return result;
+ }
+ catch (Throwable e) {
+ throw new StorageObjectFailure(e);
+ }
+ finally {
+ if (connection!=null) {
+ freeConnection(connection, statement);
+ }
+ }
+ }
+
+ /**
+ * Executes 1 sql statement and returns the first result row as a <code>Map</code>s
+ * (<code>null</code> if there wasn't any row)
+ */
+ public Map executeFreeSingleRowSql(String anSqlStatement) throws StorageObjectFailure, StorageObjectExc {
+ try {
+ List resultList = executeFreeSql(anSqlStatement, 1);
+ try {
+ if (resultList.size()>0)
+ return (Map) resultList.get(0);
+ return null;
+ }
+ finally {
+ }
+ }
+ catch (Throwable t) {
+ throw new StorageObjectFailure(t);
+ }
+ }
+
+ /**
+ * Executes 1 sql statement and returns the first column of the first result row as a <code>String</code>s
+ * (<code>null</code> if there wasn't any row)
+ */
+ public String executeFreeSingleValueSql(String sql) throws StorageObjectFailure, StorageObjectExc {
+ Map row = executeFreeSingleRowSql(sql);
+
+ if (row==null)
+ return null;
+
+ Iterator i = row.values().iterator();
+ if (i.hasNext())
+ return (String) i.next();
+ return null;
+ }
+
+ public int getSize(String where) throws SQLException, StorageObjectFailure {
+ return getSize("", null, where);
+ }
+ /**
+ * returns the number of rows in the table
+ */
+ public int getSize(String mainTablePrefix, List extraTables, String where) throws SQLException, StorageObjectFailure {
+
+ String useTable = mainTable;
+ if (mainTablePrefix!=null && mainTablePrefix.trim().length()>0) {
+ useTable+=" "+mainTablePrefix;
+ }
+ StringBuffer countSql =
+ new StringBuffer("select count(*) from ").append(useTable);
+ // append extratables, if necessary
+ if (extraTables!=null) {
+ for (int i=0;i < extraTables.size();i++) {
+ if (!extraTables.get(i).equals("")) {
+ countSql.append( ", " + extraTables.get(i));
+ }
+ }
+ }
+
+ if ((where != null) && (where.length() != 0)) {
+ countSql.append( " where " + where);
+ }
+
+ Connection con = null;
+ Statement stmt = null;
+ int result = 0;
+ logQueryBefore(countSql.toString());
+ long startTime = System.currentTimeMillis();
+
+ try {
+ con = obtainConnection();
+ stmt = con.createStatement();
+
+ ResultSet rs = executeSql(stmt, countSql.toString());
+
+ while (rs.next()) {
+ result = rs.getInt(1);
+ }
+ }
+ catch (SQLException e) {
+ logger.error("Database.getSize: " + e.getMessage());
+ }
+ finally {
+ freeConnection(con, stmt);
+ }
+ logQueryAfter(countSql.toString(), (System.currentTimeMillis() - startTime));
+
+ return result;
+ }