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1   /**
2    * Copyright 2005-2011 The Kuali Foundation
3    *
4    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
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.kuali.rice.ksb.messaging.resourceloader;
17  
18  import javax.xml.namespace.QName;
19  
20  import org.kuali.rice.core.api.config.CoreConfigHelper;
21  import org.kuali.rice.core.api.config.property.ConfigContext;
22  import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
23  import org.kuali.rice.core.api.resourceloader.ResourceLoader;
24  import org.kuali.rice.core.framework.resourceloader.BaseResourceLoader;
25  import org.kuali.rice.core.impl.resourceloader.SpringResourceLoader;
26  import org.kuali.rice.ksb.api.KsbApiServiceLocator;
27  import org.kuali.rice.ksb.api.bus.ServiceBus;
28  
29  
30  
31  /**
32   * Creates KSBs root resource loader with all the correct children attached ready for starting.
33   * Uses config object to store QNames so everything is good with the current context classloader.
34   *
35   * Can grab any KSB specific resource loader from the resource loading stack.
36   *
37   *
38   * @author Kuali Rice Team (rice.collab@kuali.org)
39   *
40   */
41  public class KSBResourceLoaderFactory {
42  	
43  	private static final String KSB_ROOT_RESOURCE_LOACER_NAME = "KSB_ROOT_RESOURCE_LOADER";
44  	private static final String KSB_REMOTE_RESOURCE_LOADER_LOCAL_NAME = "KSB_REMOTE_RESOURCE_LOADER";
45  
46  	private static void initialize() {
47  		String applicationId = CoreConfigHelper.getApplicationId();
48  		if (getRootResourceLoaderName() == null) {
49  			setRootResourceLoaderName(new QName(applicationId, KSB_ROOT_RESOURCE_LOACER_NAME));
50  		}
51  		if (getRemoteResourceLoaderName() == null) {
52  			setRemoteResourceLoaderName(new QName(applicationId, KSB_REMOTE_RESOURCE_LOADER_LOCAL_NAME));
53  		}
54  	}
55  
56  	public static ResourceLoader createRootKSBRemoteResourceLoader() {
57  		initialize();
58  		ResourceLoader rootResourceLoader = new BaseResourceLoader(getRootResourceLoaderName());
59  		ServiceBus serviceBus = KsbApiServiceLocator.getServiceBus();
60  		if (serviceBus == null) {
61  			throw new IllegalStateException("Failed to locate the ServiceBus");
62  		}
63  		rootResourceLoader.addResourceLoader(new ServiceBusResourceLoader(getRemoteResourceLoaderName(), serviceBus));
64  		return rootResourceLoader;
65  	}
66  
67  	public static ResourceLoader createThinClientKSBResourceLoader() {
68  		ResourceLoader resourceLoader = new SpringResourceLoader(new QName("", "KSB_THIN_CLIENT_RESOURCE_LOADER"), "classpath:org/kuali/rice/ksb/config/KSBThinClientSpringBeans.xml", null);
69  		GlobalResourceLoader.addResourceLoader(resourceLoader);
70  		return resourceLoader;
71  	}
72  
73  	public static BaseResourceLoader getRootResourceLoader() {
74  		return (BaseResourceLoader)GlobalResourceLoader.getResourceLoader(getRootResourceLoaderName());
75  	}
76  
77  	public static QName getRootResourceLoaderName() {
78  		return (QName)ConfigContext.getCurrentContextConfig().getObject(KSB_ROOT_RESOURCE_LOACER_NAME);
79  	}
80  
81  	public static void setRootResourceLoaderName(QName name) {
82  		ConfigContext.getCurrentContextConfig().putObject(KSB_ROOT_RESOURCE_LOACER_NAME, name);
83  	}
84  
85  	public static QName getRemoteResourceLoaderName() {
86  		return (QName)ConfigContext.getCurrentContextConfig().getObject(KSB_REMOTE_RESOURCE_LOADER_LOCAL_NAME);
87  	}
88  
89  	public static void setRemoteResourceLoaderName(QName remoteResourceLoaderName) {
90  		ConfigContext.getCurrentContextConfig().putObject(KSB_REMOTE_RESOURCE_LOADER_LOCAL_NAME, remoteResourceLoaderName);
91  	}
92  
93  }