    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.dbcp2.managed;
    019
    020import java.sql.Connection;
    021
    022import javax.management.ObjectName;
    023
    024import org.apache.commons.dbcp2.Constants;
    025import org.apache.commons.dbcp2.DelegatingPreparedStatement;
    026import org.apache.commons.dbcp2.PStmtKey;
    027import org.apache.commons.dbcp2.PoolableConnection;
    028import org.apache.commons.dbcp2.PoolableConnectionFactory;
    029import org.apache.commons.dbcp2.PoolingConnection;
    030import org.apache.commons.pool2.KeyedObjectPool;
    031import org.apache.commons.pool2.PooledObject;
    032import org.apache.commons.pool2.impl.GenericKeyedObjectPool;
    033import org.apache.commons.pool2.impl.GenericKeyedObjectPoolConfig;
    034import org.apache.commons.pool2.impl.DefaultPooledObject;
    035
    036/**
    037 * A {@link PoolableConnectionFactory} that creates {@link PoolableManagedConnection}s.
    038 *
    039 * @since 2.0
    040 */
    041public class PoolableManagedConnectionFactory extends PoolableConnectionFactory {
    042
    043    /** Transaction registry associated with connections created by this factory */
    044    private final TransactionRegistry transactionRegistry;
    045
    046    /**
    047     * Creates a PoolableManagedConnectionFactory and attach it to a connection pool.
    048     *
    049     * @param connFactory
    050     *            XAConnectionFactory
    051     * @param dataSourceJmxName
    052     *            The data source name.
    053     */
    054    public PoolableManagedConnectionFactory(final XAConnectionFactory connFactory, final ObjectName dataSourceJmxName) {
    055        super(connFactory, dataSourceJmxName);
    056        this.transactionRegistry = connFactory.getTransactionRegistry();
    057    }
    058
    059    /**
    060     * Uses the configured XAConnectionFactory to create a {@link PoolableManagedConnection}. Throws
    061     * <code>IllegalStateException</code> if the connection factory returns null. Also initializes the connection using
    062     * configured initialization SQL (if provided) and sets up a prepared statement pool associated with the
    063     * PoolableManagedConnection if statement pooling is enabled.
    064     */
    065    @Override
    066    synchronized public PooledObject<PoolableConnection> makeObject() throws Exception {
    067        Connection conn = getConnectionFactory().createConnection();
    068        if (conn == null) {
    069            throw new IllegalStateException("Connection factory returned null from createConnection");
    070        }
    071        initializeConnection(conn);
    072        if (getPoolStatements()) {
    073            conn = new PoolingConnection(conn);
    074            final GenericKeyedObjectPoolConfig config = new GenericKeyedObjectPoolConfig();
    075            config.setMaxTotalPerKey(-1);
    076            config.setBlockWhenExhausted(false);
    077            config.setMaxWaitMillis(0);
    078            config.setMaxIdlePerKey(1);
    079            config.setMaxTotal(getMaxOpenPreparedStatements());
    080            final ObjectName dataSourceJmxName = getDataSourceJmxName();
    081            final long connIndex = getConnectionIndex().getAndIncrement();
    082            if (dataSourceJmxName != null) {
    083                final StringBuilder base = new StringBuilder(dataSourceJmxName.toString());
    084                base.append(Constants.JMX_CONNECTION_BASE_EXT);
    085                base.append(Long.toString(connIndex));
    086                config.setJmxNameBase(base.toString());
    087                config.setJmxNamePrefix(Constants.JMX_STATEMENT_POOL_PREFIX);
    088            } else {
    089                config.setJmxEnabled(false);
    090            }
    091            final KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> stmtPool = new GenericKeyedObjectPool<>(
    092                    (PoolingConnection) conn, config);
    093            ((PoolingConnection) conn).setStatementPool(stmtPool);
    094            ((PoolingConnection) conn).setCacheState(getCacheState());
    095        }
    096        final PoolableManagedConnection pmc = new PoolableManagedConnection(transactionRegistry, conn, getPool(),
    097                getDisconnectionSqlCodes(), isFastFailValidation());
    098        pmc.setCacheState(getCacheState());
    099        return new DefaultPooledObject<PoolableConnection>(pmc);
    100    }
    101}