public CoreConnection() 
{

}

 public CoreConnection(Connection con) 
{
		this.con = con;
}

Constructor

 abstract public  void catchInvoke(SQLException e) throws SQLException

 public  void clearWarnings() throws SQLException 
{
		preInvoke();
		try {
			con.clearWarnings();
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void close() throws SQLException 
{
		preInvoke();
		try {
			con.close();
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void commit() throws SQLException 
{
		preInvoke();
		try {
			con.commit();
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public Statement createStatement() throws SQLException 
{
		preInvoke();
		try {
			return con.createStatement();
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public Statement createStatement(int resultSetType,
    int resultSetConcurrency) throws SQLException 
{
		preInvoke();
		try {
			return con.createStatement(resultSetType, resultSetConcurrency);
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public Statement createStatement(int resultSetType,
    int resultSetConcurrency,
    int resultSetHoldability) throws SQLException 
{
		preInvoke();
		try {
         return con.createStatement(resultSetType,resultSetConcurrency,resultSetHoldability);
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return null;
}

 public boolean getAutoCommit() throws SQLException 
{
		preInvoke();
		try {
			return con.getAutoCommit();
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return false;
}

 public String getCatalog() throws SQLException 
{
		preInvoke();
		try {
			return con.getCatalog();
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public int getHoldability() throws SQLException 
{
		preInvoke();
		try {
			return con.getHoldability();
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return 0;
}

 public DatabaseMetaData getMetaData() throws SQLException 
{
		preInvoke();
		try {
			return con.getMetaData();
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public int getTransactionIsolation() throws SQLException 
{
		preInvoke();
		try {
			return con.getTransactionIsolation();
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return 0;
}

 public Map getTypeMap() throws SQLException 
{
		preInvoke();
		try {
			return con.getTypeMap();
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public SQLWarning getWarnings() throws SQLException 
{
		preInvoke();
		try {
			return con.getWarnings();
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public boolean isReadOnly() throws SQLException 
{
		preInvoke();
		try {
			return con.isReadOnly();
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return false;
}

 public String nativeSQL(String sql) throws SQLException 
{
		preInvoke();
		try {
			return con.nativeSQL(sql);
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 abstract public  void preInvoke() throws SQLException
Methods used to do some works before and during the catch
clause, to prevent the pool that a connection is broken.

 public CallableStatement prepareCall(String sql) throws SQLException 
{
		preInvoke();
		try {
			return con.prepareCall(sql);
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public CallableStatement prepareCall(String sql,
    int resultSetType,
    int resultSetConcurrency,
    int resultSetHoldability) throws SQLException 
{
		preInvoke();
		try {
         return con.prepareCall(sql,resultSetType,resultSetConcurrency,resultSetHoldability);
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return null;
}

 public PreparedStatement prepareStatement(String sql) throws SQLException 
{
		preInvoke();
		try {
			return con.prepareStatement(sql);
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public PreparedStatement prepareStatement(String sql,
    int autoGeneratedKeys) throws SQLException 
{
		preInvoke();
		try {
			return con.prepareStatement(sql,autoGeneratedKeys);
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return null;
}

 public PreparedStatement prepareStatement(String sql,
    int[] columnIndexes) throws SQLException 
{
		preInvoke();
		try {
         return con.prepareStatement(sql,columnIndexes);
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return null;
}

 public PreparedStatement prepareStatement(String sql,
    String[] columnNames) throws SQLException 
{
		preInvoke();
		try {
         return con.prepareStatement(sql,columnNames);
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return null;
}

 public PreparedStatement prepareStatement(String sql,
    int resultSetType,
    int resultSetConcurrency) throws SQLException 
{
		preInvoke();
		try {
			return con.prepareStatement(
				sql,
				resultSetType,
				resultSetConcurrency);
		} catch (SQLException e) {
			catchInvoke(e);
		}
		return null;
}

 public PreparedStatement prepareStatement(String sql,
    int resultSetType,
    int resultSetConcurrency,
    int resultSetHoldability) throws SQLException 
{
      preInvoke();
		try {
         return prepareStatement(sql,resultSetType,resultSetConcurrency,resultSetHoldability);
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return null;
}

 public  void releaseSavepoint(Savepoint savepoint) throws SQLException 
{
		preInvoke();
		try {
         con.releaseSavepoint(savepoint);
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void rollback() throws SQLException 
{
		preInvoke();
		try {
			con.rollback();
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void rollback(Savepoint savepoint) throws SQLException 
{
		preInvoke();
		try {
         con.rollback(savepoint);
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void setAutoCommit(boolean autoCommit) throws SQLException 
{
		log.debug("CoreConnection:Setautocommit autoCommit was = " + con.getAutoCommit());
		log.debug("CoreConnection:Setautocommit = " + autoCommit);
		preInvoke();
		try {
			con.setAutoCommit(autoCommit);
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void setCatalog(String catalog) throws SQLException 
{
		preInvoke();
		try {
			con.setCatalog(catalog);
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void setHoldability(int holdability) throws SQLException 
{
		preInvoke();
		try {
         con.setHoldability(holdability);
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void setReadOnly(boolean readOnly) throws SQLException 
{
		preInvoke();
		try {
			con.setReadOnly(readOnly);
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public Savepoint setSavepoint() throws SQLException 
{
		preInvoke();
		try {
         return con.setSavepoint();
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return null;
}

 public Savepoint setSavepoint(String name) throws SQLException 
{
		preInvoke();
		try {
         return con.setSavepoint(name);
		} catch (SQLException e) {
			catchInvoke(e);
		}
      return null;
}

 public  void setTransactionIsolation(int level) throws SQLException 
{
		preInvoke();
		try {
			con.setTransactionIsolation(level);
		} catch (SQLException e) {
			catchInvoke(e);
		}
}

 public  void setTypeMap(Map map) throws SQLException 
{
		preInvoke();
		try {
			con.setTypeMap(map);
		} catch (SQLException e) {
			catchInvoke(e);
		}
}