| /******************************************************************************* |
| * Copyright (c) 2005, 2007 Cognos Incorporated, IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Cognos Incorporated - initial API and implementation |
| * IBM Corporation - bug fixes and enhancements |
| *******************************************************************************/ |
| |
| package org.eclipse.equinox.http.registry.internal; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.eclipse.core.runtime.*; |
| import org.osgi.framework.*; |
| |
| public class ResourceManager implements ExtensionPointTracker.Listener { |
| |
| private static final String RESOURCES_EXTENSION_POINT = "org.eclipse.equinox.http.registry.resources"; //$NON-NLS-1$ |
| |
| private static final String HTTPCONTEXT_NAME = "httpcontext-name"; //$NON-NLS-1$ |
| |
| private static final String BASE_NAME = "base-name"; //$NON-NLS-1$ |
| |
| private static final String ALIAS = "alias"; //$NON-NLS-1$ |
| |
| private static final String RESOURCE = "resource"; //$NON-NLS-1$ |
| |
| private static final String HTTPCONTEXT_ID = "httpcontextId"; //$NON-NLS-1$ |
| |
| private static final String SERVICESELECTOR = "serviceSelector"; //$NON-NLS-1$ |
| |
| private static final String CLASS = "class"; //$NON-NLS-1$ |
| |
| private static final String FILTER = "filter"; //$NON-NLS-1$ |
| |
| private ExtensionPointTracker tracker; |
| |
| private List registered = new ArrayList(); |
| |
| private HttpRegistryManager httpRegistryManager; |
| |
| private ServiceReference reference; |
| |
| public ResourceManager(HttpRegistryManager httpRegistryManager, ServiceReference reference, IExtensionRegistry registry) { |
| this.httpRegistryManager = httpRegistryManager; |
| this.reference = reference; |
| tracker = new ExtensionPointTracker(registry, RESOURCES_EXTENSION_POINT, this); |
| } |
| |
| public void start() { |
| tracker.open(); |
| } |
| |
| public void stop() { |
| tracker.close(); |
| } |
| |
| public void added(IExtension extension) { |
| IConfigurationElement[] elements = extension.getConfigurationElements(); |
| for (int i = 0; i < elements.length; i++) { |
| IConfigurationElement serviceSelectorElement = elements[i]; |
| if (!SERVICESELECTOR.equals(serviceSelectorElement.getName())) |
| continue; |
| |
| org.osgi.framework.Filter serviceSelector = null; |
| String clazz = serviceSelectorElement.getAttribute(CLASS); |
| if (clazz != null) { |
| try { |
| serviceSelector = (org.osgi.framework.Filter) serviceSelectorElement.createExecutableExtension(CLASS); |
| } catch (CoreException e) { |
| // log it. |
| e.printStackTrace(); |
| return; |
| } |
| } else { |
| String filter = serviceSelectorElement.getAttribute(FILTER); |
| if (filter == null) |
| return; |
| |
| try { |
| serviceSelector = FrameworkUtil.createFilter(filter); |
| } catch (InvalidSyntaxException e) { |
| // log it. |
| e.printStackTrace(); |
| return; |
| } |
| } |
| |
| if (! serviceSelector.match(reference)) |
| return; |
| |
| break; |
| } |
| |
| |
| for (int i = 0; i < elements.length; i++) { |
| IConfigurationElement resourceElement = elements[i]; |
| if (!RESOURCE.equals(resourceElement.getName())) |
| continue; |
| |
| String alias = resourceElement.getAttribute(ALIAS); |
| if (alias == null) |
| continue; // alias is mandatory - ignore this. |
| |
| String baseName = resourceElement.getAttribute(BASE_NAME); |
| if (baseName == null) |
| baseName = ""; //$NON-NLS-1$ |
| |
| String httpContextId = resourceElement.getAttribute(HTTPCONTEXT_ID); |
| if (httpContextId == null) { |
| httpContextId = resourceElement.getAttribute(HTTPCONTEXT_NAME); |
| } |
| |
| if (httpContextId != null && httpContextId.indexOf('.') == -1) |
| httpContextId = resourceElement.getNamespaceIdentifier() + "." + httpContextId; //$NON-NLS-1$ |
| |
| if (httpRegistryManager.addResourcesContribution(alias, baseName, httpContextId, extension.getContributor())) |
| registered.add(resourceElement); |
| } |
| } |
| |
| public void removed(IExtension extension) { |
| IConfigurationElement[] elements = extension.getConfigurationElements(); |
| for (int i = 0; i < elements.length; i++) { |
| IConfigurationElement resourceElement = elements[i]; |
| if (registered.remove(resourceElement)) { |
| String alias = resourceElement.getAttribute(ALIAS); |
| httpRegistryManager.removeContribution(alias); |
| } |
| } |
| } |
| } |