Spring Framework example source code file (LocalConnectionFactoryBean.java)

This example Spring Framework source code file (LocalConnectionFactoryBean.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

class, connectionmanager, connectionmanager, factorybean, illegalargumentexception, illegalargumentexception, initializingbean, initializingbean, localconnectionfactorybean, managedconnectionfactory, object, object, property, resourceexception

The Spring Framework LocalConnectionFactoryBean.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * 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 org.springframework.jca.support;

import javax.resource.ResourceException;
import javax.resource.spi.ConnectionManager;
import javax.resource.spi.ManagedConnectionFactory;

import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;

/**
 * {@link org.springframework.beans.factory.FactoryBean} that creates
 * a local JCA connection factory in "non-managed" mode (as defined by the
 * Java Connector Architecture specification). This is a direct alternative
 * to a {@link org.springframework.jndi.JndiObjectFactoryBean} definition that
 * obtains a connection factory handle from a J2EE server's naming environment.
 *
 * <p>The type of the connection factory is dependent on the actual connector:
 * the connector can either expose its native API (such as a JDBC
 * {@link javax.sql.DataSource} or a JMS {@link javax.jms.ConnectionFactory})
 * or follow the standard Common Client Interface (CCI), as defined by the JCA spec.
 * The exposed interface in the CCI case is {@link javax.resource.cci.ConnectionFactory}.
 *
 * <p>In order to use this FactoryBean, you must specify the connector's
 * {@link #setManagedConnectionFactory "managedConnectionFactory"} (usually
 * configured as separate JavaBean), which will be used to create the actual
 * connection factory reference as exposed to the application. Optionally,
 * you can also specify a {@link #setConnectionManager "connectionManager"},
 * in order to use a custom ConnectionManager instead of the connector's default.
 *
 * <p>NOTE: In non-managed mode, a connector is not deployed on an
 * application server, or more specificially not interacting with an application
 * server. Consequently, it cannot use a J2EE server's system contracts:
 * connection management, transaction management, and security management.
 * A custom ConnectionManager implementation has to be used for applying those
 * services in conjunction with a standalone transaction coordinator etc.
 *
 * <p>The connector will use a local ConnectionManager (included in the connector)
 * by default, which cannot participate in global transactions due to the lack
 * of XA enlistment. You need to specify an XA-capable ConnectionManager in
 * order to make the connector interact with an XA transaction coordinator.
 * Alternatively, simply use the native local transaction facilities of the
 * exposed API (e.g. CCI local transactions), or use a corresponding
 * implementation of Spring's PlatformTransactionManager SPI
 * (e.g. {@link org.springframework.jca.cci.connection.CciLocalTransactionManager})
 * to drive local transactions.
 *
 * @author Juergen Hoeller
 * @since 1.2
 * @see #setManagedConnectionFactory
 * @see #setConnectionManager
 * @see javax.resource.cci.ConnectionFactory
 * @see javax.resource.cci.Connection#getLocalTransaction
 * @see org.springframework.jca.cci.connection.CciLocalTransactionManager
 */
public class LocalConnectionFactoryBean implements FactoryBean, InitializingBean {

	private ManagedConnectionFactory managedConnectionFactory;

	private ConnectionManager connectionManager;

	private Object connectionFactory;


	/**
	 * Set the JCA ManagerConnectionFactory that should be used to create
	 * the desired connection factory.
	 * <p>The ManagerConnectionFactory will usually be set up as separate bean
	 * (potentially as inner bean), populated with JavaBean properties:
	 * a ManagerConnectionFactory is encouraged to follow the JavaBean pattern
	 * by the JCA specification, analogous to a JDBC DataSource and a JDO
	 * PersistenceManagerFactory.
	 * <p>Note that the ManagerConnectionFactory implementation might expect
	 * a reference to its JCA 1.5 ResourceAdapter, expressed through the
	 * {@link javax.resource.spi.ResourceAdapterAssociation} interface.
	 * Simply inject the corresponding ResourceAdapter instance into its
	 * "resourceAdapter" bean property in this case, before passing the
	 * ManagerConnectionFactory into this LocalConnectionFactoryBean.
	 * @see javax.resource.spi.ManagedConnectionFactory#createConnectionFactory()
	 */
	public void setManagedConnectionFactory(ManagedConnectionFactory managedConnectionFactory) {
		this.managedConnectionFactory = managedConnectionFactory;
	}

	/**
	 * Set the JCA ConnectionManager that should be used to create the
	 * desired connection factory.
	 * <p>A ConnectionManager implementation for local usage is often
	 * included with a JCA connector. Such an included ConnectionManager
	 * might be set as default, with no need to explicitly specify one.
	 * @see javax.resource.spi.ManagedConnectionFactory#createConnectionFactory(javax.resource.spi.ConnectionManager)
	 */
	public void setConnectionManager(ConnectionManager connectionManager) {
		this.connectionManager = connectionManager;
	}

	public void afterPropertiesSet() throws ResourceException {
		if (this.managedConnectionFactory == null) {
			throw new IllegalArgumentException("Property 'managedConnectionFactory' is required");
		}
		if (this.connectionManager != null) {
			this.connectionFactory = this.managedConnectionFactory.createConnectionFactory(this.connectionManager);
		}
		else {
			this.connectionFactory = this.managedConnectionFactory.createConnectionFactory();
		}
	}


	public Object getObject() {
		return this.connectionFactory;
	}

	public Class getObjectType() {
		return (this.connectionFactory != null ? this.connectionFactory.getClass() : null);
	}

	public boolean isSingleton() {
		return true;
	}

}