001/* 002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the Eclipse Public License v1.0 006 * which accompanies this distribution, and is available at 007 * http://www.eclipse.org/legal/epl-v10.html 008 * 009 * Contributors: 010 * bstefanescu 011 */ 012package org.nuxeo.ecm.webengine.jaxrs.views; 013 014import java.net.URI; 015import java.net.URL; 016import java.security.Principal; 017import java.util.LinkedList; 018 019import javax.servlet.http.HttpServletRequest; 020import javax.ws.rs.core.UriInfo; 021 022import org.nuxeo.ecm.core.api.CoreSession; 023import org.nuxeo.ecm.webengine.jaxrs.ApplicationHost; 024import org.nuxeo.ecm.webengine.jaxrs.session.SessionFactory; 025import org.nuxeo.ecm.platform.rendering.api.RenderingEngine; 026import org.osgi.framework.Bundle; 027 028/** 029 * A resource request context. This class is not thread safe. 030 * 031 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 032 */ 033public class ResourceContext { 034 035 private static ThreadLocal<ResourceContext> perThreadContext = new ThreadLocal<ResourceContext>(); 036 037 public final static void setContext(ResourceContext context) { 038 perThreadContext.set(context); 039 } 040 041 public final static ResourceContext getContext() { 042 return perThreadContext.get(); 043 } 044 045 public final static void destroyContext() { 046 perThreadContext.remove(); 047 } 048 049 /** 050 * The JAX-RS application providing the resources. 051 */ 052 protected ApplicationHost app; 053 054 protected HttpServletRequest request; 055 056 protected UriInfo uriInfo; 057 058 private LinkedList<Bundle> bundleStack; 059 060 private CoreSession session; 061 062 protected ResourceContext() { 063 } 064 065 public ResourceContext(ApplicationHost app) { 066 // TODO rendering in app 067 this.app = app; 068 this.bundleStack = new LinkedList<Bundle>(); 069 // this.bundleStack.add(app.getBundle()); 070 } 071 072 public ApplicationHost getApplication() { 073 return app; 074 } 075 076 public final LinkedList<Bundle> getBundleStack() { 077 return bundleStack; 078 } 079 080 public void setUriInfo(UriInfo uriInfo) { 081 this.uriInfo = uriInfo; 082 } 083 084 public void setRequest(HttpServletRequest request) { 085 this.request = request; 086 } 087 088 public final Bundle getBundle() { 089 return bundleStack.isEmpty() ? null : bundleStack.get(bundleStack.size() - 1); 090 } 091 092 public final RenderingEngine getRenderingEngine() { 093 return app.getRendering(); 094 } 095 096 public HttpServletRequest getRequest() { 097 return request; 098 } 099 100 public Principal getPrincipal() { 101 return request.getUserPrincipal(); 102 } 103 104 public UriInfo getUriInfo() { 105 return uriInfo; 106 } 107 108 public CoreSession getSession() { 109 if (session == null) { 110 session = SessionFactory.getSession(request); 111 } 112 return session; 113 } 114 115 public URI getBaseUri() { 116 return uriInfo.getBaseUri(); 117 } 118 119 public void pushBundleFor(Object obj) { 120 Bundle b = getResourceBundle(obj); 121 if (b != null) { 122 pushBundle(b); 123 } 124 } 125 126 public void pushBundle(Bundle bundle) { 127 for (Bundle b : bundleStack) { 128 if (b == bundle) { 129 // already present 130 return; 131 } 132 } 133 bundleStack.add(bundle); 134 } 135 136 protected Bundle getResourceBundle(Object res) { 137 // return FrameworkUtil.getBundle(res.getClass()); 138 return app.getBundle(res.getClass()); 139 } 140 141 /** 142 * The prefix used to reference templates in template source locators 143 * 144 * @return 145 */ 146 public String getViewRoot() { 147 return bundleStack.isEmpty() ? "" : "view:" + bundleStack.get(bundleStack.size() - 1).getBundleId() + ":/"; 148 } 149 150 public URL findEntry(String path) { 151 if (path.startsWith("view:")) { 152 int p = path.indexOf(":/"); 153 if (p > -1) { 154 path = path.substring(p + 2); 155 } 156 } 157 for (int i = bundleStack.size() - 1; i >= 0; i--) { 158 URL url = bundleStack.get(i).getEntry(path); 159 if (url != null) { 160 return url; 161 } 162 } 163 return null; 164 } 165 166}