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/**
* Copyright (C) 2000-2010 Atomikos
*
* This code ("Atomikos TransactionsEssentials"), by itself,
* is being distributed under the
* Apache License, Version 2.0 ("License"), a copy of which may be found at
* http://www.atomikos.com/licenses/apache-license-2.0.txt .
* You may not use this file except in compliance with the License.
*
* While the License grants certain patent license rights,
* those patent license rights only extend to the use of
* Atomikos TransactionsEssentials by itself.
*
* This code (Atomikos TransactionsEssentials) contains certain interfaces
* in package (namespace) com.atomikos.icatch
* (including com.atomikos.icatch.Participant) which, if implemented, may
* infringe one or more patents held by Atomikos.
* It should be appreciated that you may NOT implement such interfaces;
* licensing to implement these interfaces must be obtained separately from Atomikos.
*
* 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.
*/
package com.atomikos.jdbc;
import java.io.PrintWriter;
import java.io.Serializable;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.naming.Reference;
import javax.naming.Referenceable;
import javax.sql.XADataSource;
import com.atomikos.datasource.TransactionalResource;
import com.atomikos.datasource.xa.DefaultXidFactory;
import com.atomikos.datasource.xa.XidFactory;
import com.atomikos.icatch.HeuristicMessage;
import com.atomikos.icatch.system.Configuration;
/**
*
*
* @deprecated As of release 3.3, the {@link AtomikosDataSourceBean} should be used instead.
*
*/
public class DataSourceBean implements HeuristicDataSource, Serializable,
Referenceable
{
private transient JtaDataSourceImp ds_;
// the data source to delegate to
private XADataSource xads_;
// the hook to the JDBC database, needed to
// reconstruct the transient datasource
private String xadsJndiName_;
// optionally allow the xads to be specified through the
// JNDI name on which it is intalled
private String resourceName_;
// the unique name for the resource associated with us
private String xidFactory_;
// the name of the XID factory, needed to reconstruct ds_
private int poolSize_;
// the pool size for the ds_
private int connectionTimeout_;
// needed for the pool
private boolean exclusive_;
// true if not reusable before 2PC
private String validatingQuery_;
// an optional query for validating all settings
private boolean testOnBorrow_;
//should connections be tested when gotten?
public DataSourceBean ()
{
ds_ = null;
xads_ = null;
resourceName_ = "someUniqueName";
xidFactory_ = "Default";
poolSize_ = 2;
connectionTimeout_ = 30;
exclusive_ = true;
xadsJndiName_ = "";
validatingQuery_ = "";
testOnBorrow_ = false;
}
private synchronized void checkSetup ( boolean validation )
throws SQLException
{
// try if there has been a previous bean setup; return the DS if so
ds_ = JtaDataSourceImp.getInstance ( getUniqueResourceName () );
// return if found, but ONLY if validation is NOT true
// since validation requires asserting XA settings and creation
if ( ds_ != null && !validation )
return;
if ( xads_ == null && getDataSourceName ().equals ( "" ) )
throw new SQLException ( "DataSourceBean: xaDataSource not set." );
if ( xidFactory_ == null )
throw new SQLException ( "DataSourceBean: xidFormat not set." );
if ( !validation && !getDataSourceName ().equals ( "" ) ) {
// XADataSource is specified through its JNDI name -> look it up
try {
Context ctx = new InitialContext ();
Context envCtx = (Context) ctx.lookup ( "java:comp/env" );
xads_ = (XADataSource) envCtx.lookup ( getDataSourceName () );
} catch ( Exception e ) {
// e.printStackTrace();
throw new SQLException ( "DataSourceBean: setup error: "
+ e.getClass ().getName () + " " + e.getMessage () );
}
}
XidFactory xidFactory = null;
xidFactory = new DefaultXidFactory ();
XAConnectionFactory factory = new XAConnectionFactory ( resourceName_,
"", "", xads_, xidFactory );
factory.setExclusive ( exclusive_ );
ds_ = new JtaDataSourceImp ( factory, poolSize_, connectionTimeout_,
validation, !validation, validatingQuery_ , testOnBorrow_ );
// the application does not know the Jta datasource and hence can not
// shut it down. therefore, add a shutdown hook to do this job
DataSourceShutdownHook hook = new DataSourceShutdownHook ( ds_ );
Configuration.addShutdownHook ( hook );
}
private synchronized void checkSetup () throws SQLException
{
checkSetup ( false );
}
public void setTestOnBorrow ( String value )
{
testOnBorrow_ = "true".equals ( value );
}
public String getTestOnBorrow()
{
return testOnBorrow_ + "";
}
public void setDataSourceName ( String name )
{
xadsJndiName_ = name;
}
public String getDataSourceName ()
{
return xadsJndiName_;
}
public void setXaDataSource ( XADataSource xads )
{
xads_ = xads;
}
public XADataSource getXaDataSource ()
{
return xads_;
}
public void setUniqueResourceName ( String resourceName )
{
resourceName_ = resourceName;
}
public String getUniqueResourceName ()
{
return resourceName_;
}
public void setXidFormat ( String factory )
{
xidFactory_ = factory;
}
public String getXidFormat ()
{
return xidFactory_;
}
public void setConnectionPoolSize ( String poolSize )
{
poolSize_ = Integer.parseInt ( poolSize );
}
public String getConnectionPoolSize ()
{
return "" + poolSize_;
}
public void setConnectionTimeout ( String timeout )
{
connectionTimeout_ = Integer.parseInt ( timeout );
}
public String getConnectionTimeout ()
{
return "" + connectionTimeout_;
}
public void setExclusiveConnectionMode ( String mode )
{
exclusive_ = "true".equals ( mode );
}
public String isExclusiveConnectionMode ()
{
return "" + exclusive_;
}
public TransactionalResource getTransactionalResource ()
{
try {
checkSetup ();
} catch ( SQLException err ) {
err.printStackTrace ();
throw new RuntimeException ( err.getMessage () );
}
return ds_.getTransactionalResource ();
}
public void setValidatingQuery ( String query )
{
validatingQuery_ = query;
}
public String getValidatingQuery ()
{
return validatingQuery_;
}
/**
* Perform validation based on the validating query. This method does
* nothing if no query was specified.
*
* @throws SQLException
* If validation fails.
*/
public void validate () throws SQLException
{
checkSetup ( true );
String query = getValidatingQuery ();
if ( query == null || query.equals ( "" ) )
return;
Connection c = null;
Statement s = null;
try {
// don't use our own getConnection since it will
// call checkSetup without validation flag!
c = ds_.getConnection ();
try {
s = c.createStatement ();
ResultSet rs = s.executeQuery ( query );
s.close ();
} finally {
if ( s != null )
s.close ();
// this will also close the resultsets if any
}
}
finally {
if ( c != null )
c.close ();
}
}
//
//
// IMPLEMENTATION OF HEURISTICDATASOURCE
//
//
public Connection getConnection () throws SQLException
{
checkSetup ();
return ds_.getConnection ();
}
public Connection getConnection ( String user , String pw )
throws SQLException
{
checkSetup ();
return ds_.getConnection ( user, pw );
}
public Connection getConnection ( HeuristicMessage msg )
throws SQLException
{
checkSetup ();
return ds_.getConnection ( msg );
}
public Connection getConnection ( String msg ) throws SQLException
{
checkSetup ();
return ds_.getConnection ( msg );
}
public Connection getConnection ( String user , String passwd , String msg )
throws SQLException
{
checkSetup ();
return ds_.getConnection ( user, passwd, msg );
}
public Connection getConnection ( String user , String pw ,
HeuristicMessage msg ) throws SQLException
{
checkSetup ();
return ds_.getConnection ( user, pw, msg );
}
public int getLoginTimeout () throws SQLException
{
checkSetup ();
return ds_.getLoginTimeout ();
}
public PrintWriter getLogWriter () throws SQLException
{
checkSetup ();
return ds_.getLogWriter ();
}
public void setLoginTimeout ( int seconds ) throws SQLException
{
checkSetup ();
ds_.setLoginTimeout ( seconds );
}
public void setLogWriter ( PrintWriter out ) throws SQLException
{
checkSetup ();
ds_.setLogWriter ( out );
}
// close the datasources
public void close () throws SQLException
{
//see case 21666: don't call setup
//checkSetup ();
if ( ds_ != null ) ds_.close ();
}
//
//
// IMPLEMENTATION OF REFERENCEABLE
//
//
public Reference getReference () throws NamingException
{
return JtaDataSourceImp.createReference ( getUniqueResourceName () );
}
}
