Package org.apache.openejb.resource.jdbc.dbcp

Source Code of org.apache.openejb.resource.jdbc.dbcp.DbcpManagedDataSource

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.openejb.resource.jdbc.dbcp;

import org.apache.commons.dbcp.ConnectionFactory;
import org.apache.commons.dbcp.DataSourceConnectionFactory;
import org.apache.commons.dbcp.managed.DataSourceXAConnectionFactory;
import org.apache.commons.dbcp.managed.LocalXAConnectionFactory;
import org.apache.commons.dbcp.managed.TransactionRegistry;
import org.apache.commons.dbcp.managed.XAConnectionFactory;
import org.apache.openejb.resource.jdbc.DataSourceHelper;

import javax.sql.CommonDataSource;
import javax.sql.DataSource;
import javax.sql.XADataSource;
import java.lang.reflect.Field;
import java.sql.SQLException;

public class DbcpManagedDataSource extends BasicManagedDataSource {

    private final CommonDataSource ds;

    public DbcpManagedDataSource(final String name, final CommonDataSource dataSource) {
        super(name);
        this.ds = dataSource;
        if (XADataSource.class.isInstance(dataSource)) {
            setXaDataSourceInstance(XADataSource.class.cast(ds));
        }
    }

    @Override
    public void setJdbcUrl(final String url) {
        try {
            DataSourceHelper.setUrl(this.ds, url);
        } catch (final Throwable e1) {
            super.setUrl(url);
        }
    }

    @Override
    protected ConnectionFactory createConnectionFactory() throws SQLException {
        if (ds instanceof XADataSource) {

            // Create the XAConectionFactory using the XA data source
            final XADataSource xaDataSourceInstance = (XADataSource) ds;
            final XAConnectionFactory xaConnectionFactory = new DataSourceXAConnectionFactory(getTransactionManager(), xaDataSourceInstance, username, password);
            setTransactionRegistry(xaConnectionFactory.getTransactionRegistry());
            return xaConnectionFactory;

        }

        // If xa data source is not specified a DriverConnectionFactory is created and wrapped with a LocalXAConnectionFactory
        final ConnectionFactory connectionFactory = new DataSourceConnectionFactory(DataSource.class.cast(ds), username, password);
        final XAConnectionFactory xaConnectionFactory = new LocalXAConnectionFactory(getTransactionManager(), connectionFactory);
        setTransactionRegistry(xaConnectionFactory.getTransactionRegistry());
        return xaConnectionFactory;
    }

    public void setTransactionRegistry(final TransactionRegistry registry) {
        try {
            final Field field = org.apache.commons.dbcp.managed.BasicManagedDataSource.class.getDeclaredField("transactionRegistry");
            field.setAccessible(true);
            field.set(this, registry);
        } catch (final Throwable e) {
            throw new IllegalStateException(e);
        }
    }
}
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