org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl Maven / Gradle / Ivy
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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.engine.jdbc.connections.internal;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Map;
import javax.sql.DataSource;
import org.hibernate.HibernateException;
import org.hibernate.cfg.Environment;
import org.hibernate.engine.jdbc.connections.spi.ConnectionProvider;
import org.hibernate.engine.jndi.spi.JndiService;
import org.hibernate.service.UnknownUnwrapTypeException;
import org.hibernate.service.spi.Configurable;
import org.hibernate.service.spi.InjectService;
import org.hibernate.service.spi.Stoppable;
/**
* A {@link org.hibernate.engine.jdbc.connections.spi.ConnectionProvider} that manages connections from an underlying {@link DataSource}.
*
* The {@link DataSource} to use may be specified by either:
* - injection via {@link #setDataSource}
* - decaring the {@link DataSource} instance using the {@link Environment#DATASOURCE} config property
* - decaring the JNDI name under which the {@link DataSource} can be found via {@link Environment#DATASOURCE} config property
*
*
* @author Gavin King
* @author Steve Ebersole
*/
public class DatasourceConnectionProviderImpl implements ConnectionProvider, Configurable, Stoppable {
private DataSource dataSource;
private String user;
private String pass;
private boolean useCredentials;
private JndiService jndiService;
private boolean available;
public DataSource getDataSource() {
return dataSource;
}
public void setDataSource(DataSource dataSource) {
this.dataSource = dataSource;
}
@InjectService( required = false )
@SuppressWarnings("UnusedDeclaration")
public void setJndiService(JndiService jndiService) {
this.jndiService = jndiService;
}
@Override
public boolean isUnwrappableAs(Class unwrapType) {
return ConnectionProvider.class.equals( unwrapType ) ||
DatasourceConnectionProviderImpl.class.isAssignableFrom( unwrapType ) ||
DataSource.class.isAssignableFrom( unwrapType );
}
@Override
@SuppressWarnings( {"unchecked"})
public T unwrap(Class unwrapType) {
if ( ConnectionProvider.class.equals( unwrapType ) ||
DatasourceConnectionProviderImpl.class.isAssignableFrom( unwrapType ) ) {
return (T) this;
}
else if ( DataSource.class.isAssignableFrom( unwrapType ) ) {
return (T) getDataSource();
}
else {
throw new UnknownUnwrapTypeException( unwrapType );
}
}
@Override
public void configure(Map configValues) {
if ( this.dataSource == null ) {
final Object dataSource = configValues.get( Environment.DATASOURCE );
if ( DataSource.class.isInstance( dataSource ) ) {
this.dataSource = (DataSource) dataSource;
}
else {
final String dataSourceJndiName = (String) dataSource;
if ( dataSourceJndiName == null ) {
throw new HibernateException(
"DataSource to use was not injected nor specified by [" + Environment.DATASOURCE
+ "] configuration property"
);
}
if ( jndiService == null ) {
throw new HibernateException( "Unable to locate JndiService to lookup Datasource" );
}
this.dataSource = (DataSource) jndiService.locate( dataSourceJndiName );
}
}
if ( this.dataSource == null ) {
throw new HibernateException( "Unable to determine appropriate DataSource to use" );
}
user = (String) configValues.get( Environment.USER );
pass = (String) configValues.get( Environment.PASS );
useCredentials = user != null || pass != null;
available = true;
}
@Override
public void stop() {
available = false;
dataSource = null;
}
@Override
public Connection getConnection() throws SQLException {
if ( !available ) {
throw new HibernateException( "Provider is closed!" );
}
return useCredentials ? dataSource.getConnection( user, pass ) : dataSource.getConnection();
}
@Override
public void closeConnection(Connection connection) throws SQLException {
connection.close();
}
@Override
public boolean supportsAggressiveRelease() {
return true;
}
}