pl.kernelpanic.dbmonster.connection
Class Transaction

java.lang.Object
  pl.kernelpanic.dbmonster.connection.Transaction

public class Transaction
extends Object

This class provides an unified interface for JDBC connections. It wraps standard JDBC calls.

Version:

$Id: Transaction.java,v 1.2 2006/01/05 16:29:37 majek Exp $

Author:

Piotr Maj <pm@jcake.com>

Constructor Summary

Transaction(ConnectionProvider cp)
Constructs a new connection provider.

Method Summary

void	abort() Aborts the connection.
Connection	begin() Starts the JDBC transaction.
void	close() Closes the connection.
void	commit() Commits the transaction.
void	execute() Executes a prepared statement.
ResultSet	executeQuery(String query) Executes query.
PreparedStatement	prepareStatement(String query) Prepares statement.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Transaction

public Transaction(ConnectionProvider cp)

Constructs a new connection provider.

Parameters:

cp - a connection provider

Method Detail

begin

public Connection begin()
                 throws SQLException

Starts the JDBC transaction.

Returns:

a connection

Throws:

SQLException - if connection cannot be established

commit

public void commit()
            throws SQLException

Commits the transaction.

Throws:

SQLException - if connection cannot be established

abort

public void abort()

Aborts the connection.

close

public final void close()

Closes the connection.

executeQuery

public ResultSet executeQuery(String query)
                       throws SQLException

Executes query.

Parameters:

query - the query string

Returns:

result set

Throws:

SQLException - if somethig goes wrong

prepareStatement

public PreparedStatement prepareStatement(String query)
                                   throws SQLException

Prepares statement.

Parameters:

query - the query

Returns:

a statement

Throws:

SQLException - if query cannot be prepared

execute

public void execute()
             throws SQLException

Executes a prepared statement. Used only for updates.

Throws:

SQLException - if query could not be executed.