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1   /*
2    * Copyright 2006-2011 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  
17  package org.kuali.rice.ksb.messaging.resourceloader;
18  
19  import javax.xml.namespace.QName;
20  
21  import org.kuali.rice.core.api.config.CoreConfigHelper;
22  import org.kuali.rice.core.api.config.property.ConfigContext;
23  import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
24  import org.kuali.rice.core.api.resourceloader.ResourceLoader;
25  import org.kuali.rice.core.framework.resourceloader.BaseResourceLoader;
26  import org.kuali.rice.core.impl.resourceloader.SpringResourceLoader;
27  import org.kuali.rice.ksb.api.KsbApiServiceLocator;
28  import org.kuali.rice.ksb.api.bus.ServiceBus;
29  
30  
31  
32  /**
33   * Creates KSBs root resource loader with all the correct children attached ready for starting.
34   * Uses config object to store QNames so everything is good with the current context classloader.
35   *
36   * Can grab any KSB specific resource loader from the resource loading stack.
37   *
38   *
39   * @author Kuali Rice Team (rice.collab@kuali.org)
40   *
41   */
42  public class KSBResourceLoaderFactory {
43  	
44  	private static final String KSB_ROOT_RESOURCE_LOACER_NAME = "KSB_ROOT_RESOURCE_LOADER";
45  	private static final String KSB_REMOTE_RESOURCE_LOADER_LOCAL_NAME = "KSB_REMOTE_RESOURCE_LOADER";
46  
47  	private static void initialize() {
48  		String applicationId = CoreConfigHelper.getApplicationId();
49  		if (getRootResourceLoaderName() == null) {
50  			setRootResourceLoaderName(new QName(applicationId, KSB_ROOT_RESOURCE_LOACER_NAME));
51  		}
52  		if (getRemoteResourceLoaderName() == null) {
53  			setRemoteResourceLoaderName(new QName(applicationId, KSB_REMOTE_RESOURCE_LOADER_LOCAL_NAME));
54  		}
55  	}
56  
57  	public static ResourceLoader createRootKSBRemoteResourceLoader() {
58  		initialize();
59  		ResourceLoader rootResourceLoader = new BaseResourceLoader(getRootResourceLoaderName());
60  		ServiceBus serviceBus = KsbApiServiceLocator.getServiceBus();
61  		if (serviceBus == null) {
62  			throw new IllegalStateException("Failed to locate the ServiceBus");
63  		}
64  		rootResourceLoader.addResourceLoader(new ServiceBusResourceLoader(getRemoteResourceLoaderName(), serviceBus));
65  		return rootResourceLoader;
66  	}
67  
68  	public static ResourceLoader createThinClientKSBResourceLoader() {
69  		ResourceLoader resourceLoader = new SpringResourceLoader(new QName("", "KSB_THIN_CLIENT_RESOURCE_LOADER"), "classpath:org/kuali/rice/ksb/config/KSBThinClientSpringBeans.xml", null);
70  		GlobalResourceLoader.addResourceLoader(resourceLoader);
71  		return resourceLoader;
72  	}
73  
74  	public static BaseResourceLoader getRootResourceLoader() {
75  		return (BaseResourceLoader)GlobalResourceLoader.getResourceLoader(getRootResourceLoaderName());
76  	}
77  
78  	public static QName getRootResourceLoaderName() {
79  		return (QName)ConfigContext.getCurrentContextConfig().getObject(KSB_ROOT_RESOURCE_LOACER_NAME);
80  	}
81  
82  	public static void setRootResourceLoaderName(QName name) {
83  		ConfigContext.getCurrentContextConfig().putObject(KSB_ROOT_RESOURCE_LOACER_NAME, name);
84  	}
85  
86  	public static QName getRemoteResourceLoaderName() {
87  		return (QName)ConfigContext.getCurrentContextConfig().getObject(KSB_REMOTE_RESOURCE_LOADER_LOCAL_NAME);
88  	}
89  
90  	public static void setRemoteResourceLoaderName(QName remoteResourceLoaderName) {
91  		ConfigContext.getCurrentContextConfig().putObject(KSB_REMOTE_RESOURCE_LOADER_LOCAL_NAME, remoteResourceLoaderName);
92  	}
93  
94  }