statementwrapper.java

mysql5.0 JDBC 驱动 放在glassfish或者tomcat的lib文件夹下就可以了

/*
 Copyright  2002-2007 MySQL AB, 2008 Sun Microsystems

 This program is free software; you can redistribute it and/or modify
 it under the terms of version 2 of the GNU General Public License as 
 published by the Free Software Foundation.

 There are special exceptions to the terms and conditions of the GPL 
 as it is applied to this software. View the full text of the 
 exception in file EXCEPTIONS-CONNECTOR-J in the directory of this 
 software distribution.

 This program 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 this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



 */
package com.mysql.jdbc.jdbc2.optional;

import java.lang.reflect.Constructor;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;

import com.mysql.jdbc.SQLError;
import com.mysql.jdbc.Util;

/**
 * Wraps statements so that errors can be reported correctly to
 * ConnectionEventListeners.
 * 
 * @author Mark Matthews
 * 
 * @version $Id: StatementWrapper.java,v 1.1.2.1 2005/05/13 18:58:38 mmatthews
 *          Exp $
 */
public class StatementWrapper extends WrapperBase implements Statement {
	private static final Constructor JDBC_4_STATEMENT_WRAPPER_CTOR;
	
	static {
		if (Util.isJdbc4()) {
			try {
				JDBC_4_STATEMENT_WRAPPER_CTOR = Class.forName(
						"com.mysql.jdbc.jdbc2.optional.JDBC4StatementWrapper").getConstructor(
						new Class[] { ConnectionWrapper.class, 
								MysqlPooledConnection.class, 
								Statement.class });
			} catch (SecurityException e) {
				throw new RuntimeException(e);
			} catch (NoSuchMethodException e) {
				throw new RuntimeException(e);
			} catch (ClassNotFoundException e) {
				throw new RuntimeException(e);
			}
		} else {
			JDBC_4_STATEMENT_WRAPPER_CTOR = null;
		}
	}
	
	protected static StatementWrapper getInstance(ConnectionWrapper c, 
			MysqlPooledConnection conn,
			Statement toWrap) throws SQLException {
		if (!Util.isJdbc4()) {
			return new StatementWrapper(c, 
					conn, toWrap);
		}

		return (StatementWrapper) Util.handleNewInstance(
				JDBC_4_STATEMENT_WRAPPER_CTOR,
				new Object[] {c, 
						conn, toWrap });
	}
	
	protected Statement wrappedStmt;

	protected ConnectionWrapper wrappedConn;

	public StatementWrapper(ConnectionWrapper c, MysqlPooledConnection conn,
			Statement toWrap) {
		this.pooledConnection = conn;
		this.wrappedStmt = toWrap;
		this.wrappedConn = c;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getConnection()
	 */
	public Connection getConnection() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedConn;
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return null; // we actually never get here, but the compiler can't
						// figure

		// that out
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#setCursorName(java.lang.String)
	 */
	public void setCursorName(String name) throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				this.wrappedStmt.setCursorName(name);
			} else {
				throw SQLError.createSQLException("Statement already closed",
						SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
			}
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#setEscapeProcessing(boolean)
	 */
	public void setEscapeProcessing(boolean enable) throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				this.wrappedStmt.setEscapeProcessing(enable);
			} else {
				throw SQLError.createSQLException("Statement already closed",
						SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
			}
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#setFetchDirection(int)
	 */
	public void setFetchDirection(int direction) throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				this.wrappedStmt.setFetchDirection(direction);
			} else {
				throw SQLError.createSQLException("Statement already closed",
						SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
			}
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getFetchDirection()
	 */
	public int getFetchDirection() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedStmt.getFetchDirection();
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return ResultSet.FETCH_FORWARD; // we actually never get here, but the
										// compiler can't figure

		// that out
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#setFetchSize(int)
	 */
	public void setFetchSize(int rows) throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				this.wrappedStmt.setFetchSize(rows);
			} else {
				throw SQLError.createSQLException("Statement already closed",
						SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
			}
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getFetchSize()
	 */
	public int getFetchSize() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedStmt.getFetchSize();
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return 0; // we actually never get here, but the compiler can't figure

		// that out
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getGeneratedKeys()
	 */
	public ResultSet getGeneratedKeys() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedStmt.getGeneratedKeys();
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return null; // we actually never get here, but the compiler can't
						// figure

		// that out
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#setMaxFieldSize(int)
	 */
	public void setMaxFieldSize(int max) throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				this.wrappedStmt.setMaxFieldSize(max);
			} else {
				throw SQLError.createSQLException("Statement already closed",
						SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
			}
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getMaxFieldSize()
	 */
	public int getMaxFieldSize() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedStmt.getMaxFieldSize();
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return 0; // we actually never get here, but the compiler can't figure

		// that out
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#setMaxRows(int)
	 */
	public void setMaxRows(int max) throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				this.wrappedStmt.setMaxRows(max);
			} else {
				throw SQLError.createSQLException("Statement already closed",
						SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
			}
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getMaxRows()
	 */
	public int getMaxRows() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedStmt.getMaxRows();
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return 0; // we actually never get here, but the compiler can't figure

		// that out
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getMoreResults()
	 */
	public boolean getMoreResults() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedStmt.getMoreResults();
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return false;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getMoreResults(int)
	 */
	public boolean getMoreResults(int current) throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedStmt.getMoreResults(current);
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return false;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#setQueryTimeout(int)
	 */
	public void setQueryTimeout(int seconds) throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				this.wrappedStmt.setQueryTimeout(seconds);
			} else {
				throw SQLError.createSQLException("Statement already closed",
						SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
			}
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getQueryTimeout()
	 */
	public int getQueryTimeout() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				return this.wrappedStmt.getQueryTimeout();
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}

		return 0;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.sql.Statement#getResultSet()
	 */
	public ResultSet getResultSet() throws SQLException {
		try {
			if (this.wrappedStmt != null) {
				ResultSet rs = this.wrappedStmt.getResultSet();

				((com.mysql.jdbc.ResultSetInternalMethods) rs).setWrapperStatement(this);

				return rs;
			}

			throw SQLError.createSQLException("Statement already closed",
					SQLError.SQL_STATE_ILLEGAL_ARGUMENT);
		} catch (SQLException sqlEx) {
			checkAndFireConnectionError(sqlEx);
		}