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org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider Maven / Gradle / Ivy
Integration for c3p0 Connection pooling into Hibernate O/RM
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2007-2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.service.jdbc.connections.internal;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import javax.sql.DataSource;
import com.mchange.v2.c3p0.DataSources;
import org.jboss.logging.Logger;
import org.hibernate.HibernateException;
import org.hibernate.cfg.Environment;
import org.hibernate.internal.util.config.ConfigurationHelper;
import org.hibernate.service.UnknownUnwrapTypeException;
import org.hibernate.service.classloading.spi.ClassLoaderService;
import org.hibernate.service.classloading.spi.ClassLoadingException;
import org.hibernate.service.jdbc.connections.spi.ConnectionProvider;
import org.hibernate.service.spi.Configurable;
import org.hibernate.service.spi.ServiceRegistryAwareService;
import org.hibernate.service.spi.ServiceRegistryImplementor;
import org.hibernate.service.spi.Stoppable;
/**
* A connection provider that uses a C3P0 connection pool. Hibernate will use this by
* default if the hibernate.c3p0.* properties are set.
*
* @author various people
* @see ConnectionProvider
*/
public class C3P0ConnectionProvider
implements ConnectionProvider, Configurable, Stoppable, ServiceRegistryAwareService {
private static final C3P0MessageLogger LOG = Logger.getMessageLogger(C3P0MessageLogger.class, C3P0ConnectionProvider.class.getName());
//swaldman 2006-08-28: define c3p0-style configuration parameters for properties with
// hibernate-specific overrides to detect and warn about conflicting
// declarations
private final static String C3P0_STYLE_MIN_POOL_SIZE = "c3p0.minPoolSize";
private final static String C3P0_STYLE_MAX_POOL_SIZE = "c3p0.maxPoolSize";
private final static String C3P0_STYLE_MAX_IDLE_TIME = "c3p0.maxIdleTime";
private final static String C3P0_STYLE_MAX_STATEMENTS = "c3p0.maxStatements";
private final static String C3P0_STYLE_ACQUIRE_INCREMENT = "c3p0.acquireIncrement";
private final static String C3P0_STYLE_IDLE_CONNECTION_TEST_PERIOD = "c3p0.idleConnectionTestPeriod";
//swaldman 2006-08-28: define c3p0-style configuration parameters for initialPoolSize, which
// hibernate sensibly lets default to minPoolSize, but we'll let users
// override it with the c3p0-style property if they want.
private final static String C3P0_STYLE_INITIAL_POOL_SIZE = "c3p0.initialPoolSize";
private DataSource ds;
private Integer isolation;
private boolean autocommit;
private ServiceRegistryImplementor serviceRegistry;
@Override
@SuppressWarnings("UnnecessaryUnboxing")
public Connection getConnection() throws SQLException {
final Connection c = ds.getConnection();
if ( isolation != null ) {
c.setTransactionIsolation( isolation.intValue() );
}
if ( c.getAutoCommit() != autocommit ) {
c.setAutoCommit( autocommit );
}
return c;
}
@Override
public void closeConnection(Connection conn) throws SQLException {
conn.close();
}
@Override
public boolean isUnwrappableAs(Class unwrapType) {
return ConnectionProvider.class.equals( unwrapType ) ||
C3P0ConnectionProvider.class.isAssignableFrom( unwrapType ) ||
DataSource.class.isAssignableFrom( unwrapType );
}
@Override
@SuppressWarnings( {"unchecked"})
public T unwrap(Class unwrapType) {
if ( ConnectionProvider.class.equals( unwrapType ) ||
C3P0ConnectionProvider.class.isAssignableFrom( unwrapType ) ) {
return (T) this;
}
else if ( DataSource.class.isAssignableFrom( unwrapType ) ) {
return (T) ds;
}
else {
throw new UnknownUnwrapTypeException( unwrapType );
}
}
@Override
@SuppressWarnings( {"unchecked"})
public void configure(Map props) {
String jdbcDriverClass = (String) props.get( Environment.DRIVER );
String jdbcUrl = (String) props.get( Environment.URL );
Properties connectionProps = ConnectionProviderInitiator.getConnectionProperties( props );
LOG.c3p0UsingDriver(jdbcDriverClass, jdbcUrl);
LOG.connectionProperties(ConfigurationHelper.maskOut(connectionProps, "password"));
autocommit = ConfigurationHelper.getBoolean( Environment.AUTOCOMMIT, props );
LOG.autoCommitMode( autocommit );
if (jdbcDriverClass == null) {
LOG.jdbcDriverNotSpecified(Environment.DRIVER);
}
else {
try {
serviceRegistry.getService( ClassLoaderService.class ).classForName( jdbcDriverClass );
}
catch ( ClassLoadingException e ) {
throw new ClassLoadingException( LOG.jdbcDriverNotFound(jdbcDriverClass), e );
}
}
try {
//swaldman 2004-02-07: modify to allow null values to signify fall through to c3p0 PoolConfig defaults
Integer minPoolSize = ConfigurationHelper.getInteger( Environment.C3P0_MIN_SIZE, props );
Integer maxPoolSize = ConfigurationHelper.getInteger( Environment.C3P0_MAX_SIZE, props );
Integer maxIdleTime = ConfigurationHelper.getInteger( Environment.C3P0_TIMEOUT, props );
Integer maxStatements = ConfigurationHelper.getInteger( Environment.C3P0_MAX_STATEMENTS, props );
Integer acquireIncrement = ConfigurationHelper.getInteger( Environment.C3P0_ACQUIRE_INCREMENT, props );
Integer idleTestPeriod = ConfigurationHelper.getInteger( Environment.C3P0_IDLE_TEST_PERIOD, props );
Properties c3props = new Properties();
// turn hibernate.c3p0.* into c3p0.*, so c3p0
// gets a chance to see all hibernate.c3p0.*
for ( Object o : props.keySet() ) {
if ( ! String.class.isInstance( o ) ) {
continue;
}
final String key = (String) o;
if ( key.startsWith( "hibernate.c3p0." ) ) {
String newKey = key.substring( 15 );
if ( props.containsKey( newKey ) ) {
warnPropertyConflict( key, newKey );
}
c3props.put( newKey, props.get( key ) );
}
}
setOverwriteProperty( Environment.C3P0_MIN_SIZE, C3P0_STYLE_MIN_POOL_SIZE, props, c3props, minPoolSize );
setOverwriteProperty( Environment.C3P0_MAX_SIZE, C3P0_STYLE_MAX_POOL_SIZE, props, c3props, maxPoolSize );
setOverwriteProperty( Environment.C3P0_TIMEOUT, C3P0_STYLE_MAX_IDLE_TIME, props, c3props, maxIdleTime );
setOverwriteProperty(
Environment.C3P0_MAX_STATEMENTS, C3P0_STYLE_MAX_STATEMENTS, props, c3props, maxStatements
);
setOverwriteProperty(
Environment.C3P0_ACQUIRE_INCREMENT, C3P0_STYLE_ACQUIRE_INCREMENT, props, c3props, acquireIncrement
);
setOverwriteProperty(
Environment.C3P0_IDLE_TEST_PERIOD, C3P0_STYLE_IDLE_CONNECTION_TEST_PERIOD, props, c3props, idleTestPeriod
);
// revert to traditional hibernate behavior of setting initialPoolSize to minPoolSize
// unless otherwise specified with a c3p0.*-style parameter.
Integer initialPoolSize = ConfigurationHelper.getInteger( C3P0_STYLE_INITIAL_POOL_SIZE, props );
if ( initialPoolSize == null && minPoolSize != null ) {
setOverwriteProperty( "", C3P0_STYLE_INITIAL_POOL_SIZE, props, c3props, minPoolSize );
}
/*DataSource unpooled = DataSources.unpooledDataSource(
jdbcUrl, props.getProperty(Environment.USER), props.getProperty(Environment.PASS)
);*/
DataSource unpooled = DataSources.unpooledDataSource( jdbcUrl, connectionProps );
Map allProps = new HashMap();
allProps.putAll( props );
allProps.putAll( c3props );
ds = DataSources.pooledDataSource( unpooled, allProps );
}
catch ( Exception e ) {
LOG.error(LOG.unableToInstantiateC3p0ConnectionPool(), e);
throw new HibernateException(LOG.unableToInstantiateC3p0ConnectionPool(), e);
}
String i = (String) props.get( Environment.ISOLATION );
if (i == null) isolation = null;
else {
isolation = Integer.valueOf( i );
LOG.jdbcIsolationLevel(Environment.isolationLevelToString(isolation));
}
}
public void close() {
try {
DataSources.destroy( ds );
}
catch ( SQLException sqle ) {
LOG.unableToDestroyC3p0ConnectionPool(sqle);
}
}
@Override
public boolean supportsAggressiveRelease() {
return false;
}
private void setOverwriteProperty(String hibernateStyleKey, String c3p0StyleKey, Map hibp, Properties c3p, Integer value) {
if ( value != null ) {
String peeledC3p0Key = c3p0StyleKey.substring(5);
c3p.put( peeledC3p0Key, String.valueOf( value ).trim() );
if ( hibp.containsKey( c3p0StyleKey ) ) {
warnPropertyConflict( hibernateStyleKey, c3p0StyleKey );
}
String longC3p0StyleKey = "hibernate." + c3p0StyleKey;
if ( hibp.containsKey( longC3p0StyleKey ) ) {
warnPropertyConflict( hibernateStyleKey, longC3p0StyleKey );
}
}
}
private void warnPropertyConflict(String hibernateStyle, String c3p0Style) {
LOG.bothHibernateAndC3p0StylesSet(hibernateStyle, c3p0Style, hibernateStyle, c3p0Style);
}
@Override
public void stop() {
close();
}
@Override
public void injectServices(ServiceRegistryImplementor serviceRegistry) {
this.serviceRegistry = serviceRegistry;
}
}
