Commons DBCP example source code file (TesterStatement.java)

This example Commons DBCP source code file (TesterStatement.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons DBCP tags/keywords

connection, jdbc, not, not, resultset, sql, sqlexception, sqlexception, statement, string, string, t, testerconnection, testerresultset, testerresultset, testerstatement

The Commons DBCP TesterStatement.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.dbcp;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;

/**
 * A dummy {@link Statement}, for testing purposes.
 * 
 * @author Rodney Waldhoff
 * @author Dirk Verbeeck
 * @version $Revision: 883942 $ $Date: 2009-11-24 20:00:03 -0500 (Tue, 24 Nov 2009) $
 */
public class TesterStatement implements Statement {
    public TesterStatement(Connection conn) {
        _connection = conn;
    }

    public TesterStatement(Connection conn, int resultSetType, int resultSetConcurrency) {
        _connection = conn;
        _resultSetType = resultSetType;
        _resultSetConcurrency = resultSetConcurrency;
    }
    
    protected Connection _connection = null;
    protected boolean _open = true;
    protected int _rowsUpdated = 1;
    protected boolean _executeResponse = true;
    protected int _maxFieldSize = 1024;
    protected int _maxRows = 1024;
    protected boolean _escapeProcessing = false;
    protected int _queryTimeout = 1000;
    protected String _cursorName = null;
    protected int _fetchDirection = 1;
    protected int _fetchSize = 1;
    protected int _resultSetConcurrency = 1;
    protected int _resultSetType = 1;
    protected ResultSet _resultSet = null;

    public ResultSet executeQuery(String sql) throws SQLException {
        checkOpen();
        if("null".equals(sql)) {
            return null;
        } 
        if("invalid".equals(sql)) {
            throw new SQLException("invalid query");
        }
        if ("broken".equals(sql)) {
            throw new SQLException("broken connection");
        }  
        if("select username".equals(sql)) {
            String username = ((TesterConnection) _connection).getUsername();
            Object[][] data = {{username}};
            return new TesterResultSet(this, data);
        } else {
            // Simulate timeout if queryTimout is set to less than 5 seconds
            if (_queryTimeout > 0 && _queryTimeout < 5) { 
                throw new SQLException("query timeout");
            }
            return new TesterResultSet(this);
        }
    }

    public int executeUpdate(String sql) throws SQLException {
        checkOpen();
        return _rowsUpdated;
    }

    public void close() throws SQLException {
        // calling close twice has no effect
        if (!_open) {
            return;
        }

        _open = false;
        if (_resultSet != null) {
            _resultSet.close();
            _resultSet = null;
        }
    }

    public int getMaxFieldSize() throws SQLException {
        checkOpen();
        return _maxFieldSize;
    }

    public void setMaxFieldSize(int max) throws SQLException {
        checkOpen();
        _maxFieldSize = max;
    }

    public int getMaxRows() throws SQLException {
        checkOpen();
        return _maxRows;
    }

    public void setMaxRows(int max) throws SQLException {
        checkOpen();
        _maxRows = max;
    }

    public void setEscapeProcessing(boolean enable) throws SQLException {
        checkOpen();
        _escapeProcessing = enable;
    }

    public int getQueryTimeout() throws SQLException {
        checkOpen();
        return _queryTimeout;
    }

    public void setQueryTimeout(int seconds) throws SQLException {
        checkOpen();
        _queryTimeout = seconds;
    }

    public void cancel() throws SQLException {
        checkOpen();
    }

    public SQLWarning getWarnings() throws SQLException {
        checkOpen();
        return null;
    }

    public void clearWarnings() throws SQLException {
        checkOpen();
    }

    public void setCursorName(String name) throws SQLException {
        checkOpen();
        _cursorName = name;
    }

    public boolean execute(String sql) throws SQLException {
        checkOpen();
        if("invalid".equals(sql)) {
            throw new SQLException("invalid query");
        }
        return _executeResponse;
    }

    public ResultSet getResultSet() throws SQLException {
        checkOpen();
        if (_resultSet == null) {
            _resultSet = new TesterResultSet(this); 
        }
        return _resultSet;
    }

    public int getUpdateCount() throws SQLException {
        checkOpen();
        return _rowsUpdated;
    }

    public boolean getMoreResults() throws SQLException {
        checkOpen();
        return false;
    }

    public void setFetchDirection(int direction) throws SQLException {
        checkOpen();
        _fetchDirection = direction;
    }

    public int getFetchDirection() throws SQLException {
        checkOpen();
        return _fetchDirection;
    }

    public void setFetchSize(int rows) throws SQLException {
        checkOpen();
        _fetchSize = rows;
    }

    public int getFetchSize() throws SQLException {
        checkOpen();
        return _fetchSize;
    }

    public int getResultSetConcurrency() throws SQLException {
        checkOpen();
        return _resultSetConcurrency;
    }

    public int getResultSetType() throws SQLException {
        checkOpen();
        return _resultSetType;
    }

    public void addBatch(String sql) throws SQLException {
        checkOpen();
    }

    public void clearBatch() throws SQLException {
        checkOpen();
    }

    public int[] executeBatch() throws SQLException {
        checkOpen();
        return new int[0];
    }

    public Connection getConnection() throws SQLException {
        checkOpen();
        return _connection;
    }

    protected void checkOpen() throws SQLException {
        if(!_open) {
            throw new SQLException("Connection is closed.");
        }
    }

    public boolean getMoreResults(int current) throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public ResultSet getGeneratedKeys() throws SQLException {
        return new TesterResultSet(this);
    }

    public int executeUpdate(String sql, int autoGeneratedKeys)
        throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public int executeUpdate(String sql, int columnIndexes[])
        throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public int executeUpdate(String sql, String columnNames[])
        throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public boolean execute(String sql, int autoGeneratedKeys)
        throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public boolean execute(String sql, int columnIndexes[])
        throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public boolean execute(String sql, String columnNames[])
        throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public int getResultSetHoldability() throws SQLException {
        checkOpen();
        throw new SQLException("Not implemented.");
    }

/* JDBC_4_ANT_KEY_BEGIN */

    public boolean isWrapperFor(Class<?> iface) throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public <T> T unwrap(Class iface) throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public boolean isClosed() throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public void setPoolable(boolean poolable) throws SQLException {
        throw new SQLException("Not implemented.");
    }

    public boolean isPoolable() throws SQLException {
        throw new SQLException("Not implemented.");
    }
/* JDBC_4_ANT_KEY_END */
}