Glassfish example source code file (JdbcObjectsFactory.java)

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Java - Glassfish tags/keywords

class, connection, connection, exception, invocationhandler, io, jdbc, jdbcobjectsfactory, jdbcobjectsfactory, log, logging, object, object, reflection, serializable, sql, sqltracedelegator, sqltracerecord, t, t

The Glassfish JdbcObjectsFactory.java source code

/*
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 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
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 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package com.sun.gjc.spi;

import com.sun.gjc.common.DataSourceObjectBuilder;
import com.sun.gjc.spi.base.ConnectionHolder;
import com.sun.gjc.util.SQLTraceDelegator;
import com.sun.logging.LogDomains;

import java.io.Serializable;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.Connection;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.api.jdbc.SQLTraceRecord;


/**
 * Factory to create JDBC objects
 */
public abstract class JdbcObjectsFactory implements Serializable {

    protected final static Logger _logger;

    static {
        _logger = LogDomains.getLogger(JdbcObjectsFactory.class, LogDomains.RSR_LOGGER);
    }

    /**
     * Returns JDBC Objet Factory for JDBC 3.0 or JDBC 4.0 depending upon the jdbc version<br>
     * available in JDK.<br>
     *
     * @return JdbcObjectsFactory
     */
    public static JdbcObjectsFactory getInstance() {
        boolean jdbc40 = DataSourceObjectBuilder.isJDBC40();
        JdbcObjectsFactory factory = null;
        try {
            if (jdbc40) {
                factory = (JdbcObjectsFactory) Class.forName("com.sun.gjc.spi.jdbc40.Jdbc40ObjectsFactory").newInstance();
            } else {
                factory = (JdbcObjectsFactory) Class.forName("com.sun.gjc.spi.jdbc30.Jdbc30ObjectsFactory").newInstance();
            }
        } catch (Exception e) {
            _logger.log(Level.WARNING, "jdbc.jdbc_factory_class_load_exception", e);
        }
        return factory;
    }

    /**
     * Returns a DataSource instance.
     *
     * @param mcfObject Managed Connection Factory
     * @param cmObject  Connection Manager
     * @return DataSource
     */
    public abstract javax.sql.DataSource getDataSourceInstance(ManagedConnectionFactory mcfObject,
                                                               javax.resource.spi.ConnectionManager cmObject);

    /**
     * To get an instance of ConnectionHolder.<br>
     * Will return a ConnectionHolder with or without wrapper<br>
     *
     * @param conObject         Connection
     * @param mcObject          ManagedConnection
     * @param criObject         Connection Request Info
     * @param statementWrapping Whether to wrap statement objects or not.
     * @return ConnectionHolder
     */
    public abstract ConnectionHolder getConnection(Connection conObject,
                                                   ManagedConnection mcObject,
                                                   javax.resource.spi.ConnectionRequestInfo criObject,
                                                   boolean statementWrapping,
                                                   SQLTraceDelegator sqlTraceDelegator);

    protected Connection getProxiedConnection(final Object conObject, Class[] connIntf,
            final SQLTraceDelegator sqlTraceDelegator) {
        Connection proxiedConn = null;
        try {

            proxiedConn = (Connection) getProxyObject(conObject, connIntf, sqlTraceDelegator);
        } catch (Exception ex) {
            _logger.log(Level.SEVERE, "jdbc.jdbc_proxied_connection_get_exception", ex.getMessage());
        }
        return proxiedConn;
    }
    
    protected <T> T getProxyObject(final Object actualObject, Class[] ifaces, 
            final SQLTraceDelegator sqlTraceDelegator) throws Exception {
        
        T result;
        InvocationHandler ih = new InvocationHandler() {

            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                SQLTraceRecord record = new SQLTraceRecord();
                record.setMethodName(method.getName());
                record.setParams(args);
                record.setClassName(actualObject.getClass().getName());
                record.setThreadName(Thread.currentThread().getName());
                record.setThreadID(Thread.currentThread().getId());
                record.setTimeStamp(System.currentTimeMillis());
                sqlTraceDelegator.sqlTrace(record);
                return method.invoke(actualObject, args);
            }
        };
        result = (T) Proxy.newProxyInstance(actualObject.getClass().getClassLoader(), ifaces, ih);        
        return result;
    }    

}