/*
* Copyright 2011 Objectos, Fábrica de Software LTDA.
*
* 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 br.com.objectos.comuns.relational.jdbc;
import java.beans.PropertyVetoException;
import br.com.objectos.comuns.sql.JdbcCredentials;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.mchange.v2.c3p0.ComboPooledDataSource;
/**
* @author marcio.endo@objectos.com.br (Marcio Endo)
*/
public class C3P0PoolProvider implements Provider<ComboPooledDataSource> {
private final JdbcCredentials credentials;
@Inject
public C3P0PoolProvider(@C3P0 JdbcCredentials credentials) {
this.credentials = credentials;
}
@Override
public final ComboPooledDataSource get() {
ComboPooledDataSource dataSource = new ComboPooledDataSource();
try {
dataSource.setDriverClass(credentials.getDriverClass());
dataSource.setJdbcUrl(credentials.getUrl());
dataSource.setUser(credentials.getUser());
dataSource.setPassword(credentials.getPassword());
configureDataSource(dataSource);
} catch (PropertyVetoException e) {
// it is the very first set for the driverClass
// on a side note: that is why immutability is cool and the opposite
// (sometimes) is not.
}
return dataSource;
}
protected void configureDataSource(ComboPooledDataSource dataSource) {
dataSource.setInitialPoolSize(0);
dataSource.setMinPoolSize(0);
dataSource.setMaxPoolSize(50);
dataSource.setIdleConnectionTestPeriod(3600);
dataSource.setMaxIdleTime(120);
dataSource.setPreferredTestQuery("select 1");
}
}