/*
* Copyright 2002-2009 the original author or authors.
*
* Licensed 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.springframework.orm.hibernate3;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
import javax.sql.DataSource;
import org.hibernate.HibernateException;
import org.hibernate.connection.ConnectionProvider;
import org.hibernate.util.JDBCExceptionReporter;
/**
* Hibernate connection provider for local DataSource instances
* in an application context. This provider will be used if
* LocalSessionFactoryBean's "dataSource" property is set
* without a Hibernate TransactionManagerLookup.
*
* @author Juergen Hoeller
* @since 1.2
* @see LocalSessionFactoryBean#setDataSource
*/
public class LocalDataSourceConnectionProvider implements ConnectionProvider {
private DataSource dataSource;
private DataSource dataSourceToUse;
public void configure(Properties props) throws HibernateException {
this.dataSource = LocalSessionFactoryBean.getConfigTimeDataSource();
// absolutely needs thread-bound DataSource to initialize
if (this.dataSource == null) {
throw new HibernateException("No local DataSource found for configuration - " +
"'dataSource' property must be set on LocalSessionFactoryBean");
}
this.dataSourceToUse = getDataSourceToUse(this.dataSource);
}
/**
* Return the DataSource to use for retrieving Connections.
* <p>This implementation returns the passed-in DataSource as-is.
* @param originalDataSource the DataSource as configured by the user
* on LocalSessionFactoryBean
* @return the DataSource to actually retrieve Connections from
* (potentially wrapped)
* @see LocalSessionFactoryBean#setDataSource
*/
protected DataSource getDataSourceToUse(DataSource originalDataSource) {
return originalDataSource;
}
/**
* Return the DataSource that this ConnectionProvider wraps.
*/
public DataSource getDataSource() {
return this.dataSource;
}
/**
* This implementation delegates to the underlying DataSource.
* @see javax.sql.DataSource#getConnection()
*/
public Connection getConnection() throws SQLException {
try {
return this.dataSourceToUse.getConnection();
}
catch (SQLException ex) {
JDBCExceptionReporter.logExceptions(ex);
throw ex;
}
}
/**
* This implementation simply calls <code>Connection.close</code>.
* @see java.sql.Connection#close()
*/
public void closeConnection(Connection con) throws SQLException {
try {
con.close();
}
catch (SQLException ex) {
JDBCExceptionReporter.logExceptions(ex);
throw ex;
}
}
/**
* This implementation does nothing:
* We're dealing with an externally managed DataSource.
*/
public void close() {
}
/**
* This implementation returns <code>false</code>: We cannot guarantee
* to receive the same Connection within a transaction, not even when
* dealing with a JNDI DataSource.
*/
public boolean supportsAggressiveRelease() {
return false;
}
}
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