com.goldencode.p2j.persist.orm

Class TempTableDataSourceProvider.DataSourceImpl

java.lang.Object

com.goldencode.p2j.persist.orm.TempTableDataSourceProvider.DataSourceImpl

All Implemented Interfaces:

java.sql.Wrapper, javax.sql.CommonDataSource, javax.sql.DataSource

Enclosing class:

TempTableDataSourceProvider

private static class TempTableDataSourceProvider.DataSourceImpl
extends java.lang.Object
implements javax.sql.DataSource

Implementation of the DataSource interface, which maintains context-local data for each private temp-table connection.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	TempTableDataSourceProvider.DataSourceImpl.Context Context-specific data.
class	TempTableDataSourceProvider.DataSourceImpl.TempProxyConnection A proxy connection for the temporary database.

Field Summary

Fields

Modifier and Type	Field and Description
private static ContextLocal<TempTableDataSourceProvider.DataSourceImpl.Context>	context Context local variable to hold context-specific data
private static CentralLogger	LOG Logger

Constructor Summary

Constructors

Modifier	Constructor and Description
private	DataSourceImpl()

Method Summary

Modifier and Type	Method and Description
void	close() Intercept close requests to close the physical database connection only when there is no temp-table which still needs it.
java.sql.Connection	getConnection() Attempts to establish a connection with the data source of the _temp database.
java.sql.Connection	getConnection(java.lang.String username, java.lang.String password) Attempts to establish a connection with the data source of the _temp database.
int	getLoginTimeout()
java.io.PrintWriter	getLogWriter()
java.util.logging.Logger	getParentLogger()
boolean	isWrapperFor(java.lang.Class<?> iface)
void	setLoginTimeout(int seconds)
void	setLogWriter(java.io.PrintWriter out)
<T> T	unwrap(java.lang.Class<T> iface)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final CentralLogger LOG

Logger

context

private static final ContextLocal<TempTableDataSourceProvider.DataSourceImpl.Context> context

Context local variable to hold context-specific data

Constructor Detail

DataSourceImpl

private DataSourceImpl()

Method Detail

getConnection

public java.sql.Connection getConnection()
                                  throws java.sql.SQLException

Attempts to establish a connection with the data source of the _temp database. Uses the credentials from the DatabaseManager configuration.

Specified by:

getConnection in interface javax.sql.DataSource

Returns:

a connection to the data source.

Throws:

java.sql.SQLException - if a database access error occurs.

getConnection

public java.sql.Connection getConnection(java.lang.String username,
                                         java.lang.String password)
                                  throws java.sql.SQLException

Attempts to establish a connection with the data source of the _temp database. If credentials are null, the DatabaseManager configuration is inspected for their values.

Specified by:

getConnection in interface javax.sql.DataSource

Parameters:

username - The database user on whose behalf the connection is made. If null, the value is read form @code DatabaseManager}'s configuration.

password - The password of the database user on whose behalf the connection is made. If null, the value is read form @code DatabaseManager}'s configuration.

Returns:

a connection to the data source.

Throws:

java.sql.SQLException - if a database access error occurs.

isWrapperFor

public boolean isWrapperFor(java.lang.Class<?> iface)
                     throws java.sql.SQLException

Specified by:

isWrapperFor in interface java.sql.Wrapper

Throws:

java.sql.SQLException

unwrap

public <T> T unwrap(java.lang.Class<T> iface)
             throws java.sql.SQLException

Specified by:

unwrap in interface java.sql.Wrapper

Throws:

java.sql.SQLException

getLogWriter

public java.io.PrintWriter getLogWriter()

Specified by:

getLogWriter in interface javax.sql.CommonDataSource

setLogWriter

public void setLogWriter(java.io.PrintWriter out)

Specified by:

setLogWriter in interface javax.sql.CommonDataSource

setLoginTimeout

public void setLoginTimeout(int seconds)

Specified by:

setLoginTimeout in interface javax.sql.CommonDataSource

getLoginTimeout

public int getLoginTimeout()

Specified by:

getLoginTimeout in interface javax.sql.CommonDataSource

getParentLogger

public java.util.logging.Logger getParentLogger()
                                         throws java.sql.SQLFeatureNotSupportedException

Specified by:

getParentLogger in interface javax.sql.CommonDataSource

Throws:

java.sql.SQLFeatureNotSupportedException

close

public void close()
           throws java.sql.SQLException

Intercept close requests to close the physical database connection only when there is no temp-table which still needs it.

Throws:

java.sql.SQLException - if there is an error closing the connection.