| 1 | /* |
| 2 | * Copyright 2004 The Apache Software Foundation. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.apache.pluto.driver.config; |
| 17 | |
| 18 | import javax.servlet.ServletContext; |
| 19 | |
| 20 | import org.apache.commons.logging.Log; |
| 21 | import org.apache.commons.logging.LogFactory; |
| 22 | import org.springframework.beans.factory.BeanFactory; |
| 23 | import org.springframework.beans.factory.NoSuchBeanDefinitionException; |
| 24 | import org.springframework.beans.factory.access.BeanFactoryLocator; |
| 25 | import org.springframework.beans.factory.access.BeanFactoryReference; |
| 26 | import org.springframework.beans.factory.access.SingletonBeanFactoryLocator; |
| 27 | |
| 28 | /** |
| 29 | * |
| 30 | * @see DriverConfiguration |
| 31 | * @see AdminConfiguration |
| 32 | * @author <a href="mailto:ddewolf@apache.org">David H. DeWolf</a> |
| 33 | * @author <a href="mailto:zheng@apache.org">ZHENG Zhong</a> |
| 34 | * @version 1.0 |
| 35 | * @since Sep 23, 2004 |
| 36 | */ |
| 37 | public class DriverConfigurationFactory { |
| 38 | |
| 39 | /** Logger. */ |
| 40 | private static final Log LOG = LogFactory.getLog(DriverConfigurationFactory.class); |
| 41 | |
| 42 | /** Portal driver services configuration file name. */ |
| 43 | private static final String DRIVER_CONFIG_FILE = "/WEB-INF/pluto-portal-driver-services-config.xml"; |
| 44 | |
| 45 | /** The singleton factory instance. */ |
| 46 | private static final DriverConfigurationFactory factory = new DriverConfigurationFactory(); |
| 47 | |
| 48 | // Private Member Variables ------------------------------------------------ |
| 49 | |
| 50 | private BeanFactory beanFactory = null; |
| 51 | |
| 52 | // Constructor ------------------------------------------------------------- |
| 53 | |
| 54 | /** |
| 55 | * Private constructor that prevents external instantiation. |
| 56 | */ |
| 57 | private DriverConfigurationFactory() { |
| 58 | // Do nothing. |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Returns the singleton factory instance. |
| 63 | * |
| 64 | * @return the singleton factory instance. |
| 65 | */ |
| 66 | public static DriverConfigurationFactory getFactory() { |
| 67 | return factory; |
| 68 | } |
| 69 | |
| 70 | // Public Methods ---------------------------------------------------------- |
| 71 | |
| 72 | public DriverConfiguration getConfig(ServletContext servletContext) { |
| 73 | if (LOG.isDebugEnabled()) { |
| 74 | LOG.debug("Retrieving driver config from: " + DRIVER_CONFIG_FILE); |
| 75 | } |
| 76 | try { |
| 77 | DriverConfiguration driverConfig = (DriverConfiguration) getBeanFactory(servletContext).getBean("DriverConfiguration"); |
| 78 | driverConfig.init(servletContext); |
| 79 | if (LOG.isDebugEnabled()) { |
| 80 | LOG.debug("Driver config of type " + driverConfig.getClass() + " Initialized and Ready For Service."); |
| 81 | } |
| 82 | return driverConfig; |
| 83 | } catch (NoSuchBeanDefinitionException ex) { |
| 84 | throw new DriverConfigurationException("Unable to find Driver Configuration.", ex); |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | public AdminConfiguration getAdminConfig(ServletContext servletContext) { |
| 89 | if (LOG.isDebugEnabled()) { |
| 90 | LOG.debug("Retrieving admin config from: " + DRIVER_CONFIG_FILE); |
| 91 | } |
| 92 | try { |
| 93 | AdminConfiguration adminConfig = (AdminConfiguration) getBeanFactory(servletContext).getBean("AdminConfiguration"); |
| 94 | adminConfig.init(servletContext); |
| 95 | if (LOG.isDebugEnabled()) { |
| 96 | LOG.debug("Admin config of type " + adminConfig.getClass() + "Initialized and ready for service."); |
| 97 | } |
| 98 | return adminConfig; |
| 99 | } catch (NoSuchBeanDefinitionException ex) { |
| 100 | return null; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | // Private Methods --------------------------------------------------------- |
| 105 | |
| 106 | private BeanFactory getBeanFactory(ServletContext servletContext) { |
| 107 | BeanFactoryLocator bfLocator = SingletonBeanFactoryLocator.getInstance("Spring.xml"); |
| 108 | BeanFactoryReference bfReference = bfLocator.useBeanFactory("appContext"); |
| 109 | BeanFactory factory = bfReference.getFactory(); |
| 110 | return factory; |
| 111 | // |
| 112 | // if (beanFactory == null) { |
| 113 | // InputStream is = servletContext.getResourceAsStream( |
| 114 | // DRIVER_CONFIG_FILE); |
| 115 | // beanFactory = new XmlBeanFactory(new InputStreamResource( |
| 116 | // is, "Driver Configuration")); |
| 117 | // } |
| 118 | // return beanFactory; |
| 119 | } |
| 120 | |
| 121 | } |