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16 package org.apache.cocoon.webapps.portal.context;
17
18 import java.io.IOException  ;
19 import java.util.HashMap ;
20 import java.util.Map ;
21
22 import org.apache.avalon.framework.activity.Disposable;
23 import org.apache.avalon.framework.component.Component;
24 import org.apache.avalon.framework.context.Context;
25 import org.apache.avalon.framework.context.ContextException;
26 import org.apache.avalon.framework.context.Contextualizable;
27 import org.apache.avalon.framework.logger.AbstractLogEnabled;
28 import org.apache.avalon.framework.service.ServiceException;
29 import org.apache.avalon.framework.service.ServiceManager;
30 import org.apache.avalon.framework.service.Serviceable;
31 import org.apache.avalon.framework.thread.ThreadSafe;
32 import org.apache.cocoon.ProcessingException;
33 import org.apache.cocoon.components.ContextHelper;
34 import org.apache.cocoon.environment.ObjectModelHelper;
35 import org.apache.cocoon.environment.Request;
36 import org.apache.cocoon.environment.Session;
37 import org.apache.cocoon.webapps.portal.PortalConstants;
38 import org.apache.cocoon.webapps.portal.components.PortalManager;
39 import org.apache.cocoon.webapps.session.context.SessionContext;
40 import org.apache.cocoon.webapps.session.context.SessionContextProvider;
41 import org.apache.excalibur.source.SourceParameters;
42 import org.apache.excalibur.xml.xpath.XPathProcessor;
43 import org.xml.sax.SAXException ;
44
45
51 public final class SessionContextProviderImpl extends AbstractLogEnabled
52 implements SessionContextProvider, ThreadSafe, Component, Serviceable, Contextualizable, Disposable {
53
54 private ServiceManager manager;
55 private Context context;
56
57
58 protected XPathProcessor xpathProcessor;
59
60
66 public SessionContext getSessionContext(String name)
67 throws ProcessingException {
68 Map objectModel = ContextHelper.getObjectModel(this.context);
69
70 SessionContext context = this.getContext( objectModel, name );
71 if (name.equals(PortalConstants.SESSION_CONTEXT_NAME) && context == null) {
72 Request req = ObjectModelHelper.getRequest(objectModel);
73 Session session = req.getSession(false);
74 if (session != null) {
75
76 PortalManager portal = null;
77 try {
78 portal = (PortalManager)manager.lookup(PortalManager.ROLE);
79 String value = req.getParameter("portalcontext");
81 if (value != null) {
82 int sepOne, sepTwo;
83 sepOne = value.indexOf('_');
84 if (sepOne != -1) {
85 sepTwo = value.indexOf('_', sepOne+1);
86 if (sepTwo != -1) {
87 String copletIdentifier = value.substring(0, sepOne);
88 String copletID = value.substring(sepOne+1, sepTwo);
89 String copletNumber = value.substring(sepTwo+1);
90
91 if (copletIdentifier.equals("coplet")) {
92 Map info = new HashMap (3);
93 SessionContextImpl.copletInfo.set(info);
94
95 SourceParameters pars = new SourceParameters();
96 info.put(PortalConstants.COPLETINFO_PARAMETERS, pars);
97 pars.setSingleParameterValue(PortalConstants.PARAMETER_ID, copletID);
98 pars.setSingleParameterValue(PortalConstants.PARAMETER_NUMBER, copletNumber);
99 pars.setSingleParameterValue(PortalConstants.PARAMETER_MEDIA, portal.getMediaType());
100
101 info.put(PortalConstants.COPLETINFO_STATUSPROFILE, portal.getStatusProfile());
102 info.put(PortalConstants.COPLETINFO_PORTALURI, req.getRequestURI());
103 }
104 }
105 }
106 } else {
107 if (SessionContextImpl.copletInfo.get() == null) {
108 throw new ProcessingException("Portal context not available outside a coplet.");
109 }
110 }
111 context = new SessionContextImpl(name, objectModel, portal, this.xpathProcessor);
112 objectModel.put(this.getClass().getName()+name, context);
113 } catch (SAXException se) {
114 throw new ProcessingException("SAXException", se);
115 } catch (IOException ioe) {
116 throw new ProcessingException("IOException", ioe);
117 } catch (ServiceException se) {
118 throw new ProcessingException("Unable to lookup portal.", se);
119 } finally {
120 manager.release(portal);
121 }
122 }
123 }
124 return context;
125 }
126
127
130 public boolean existsSessionContext(String name)
131 throws ProcessingException {
132 final Map objectModel = ContextHelper.getObjectModel(this.context);
133 return (this.getContext( objectModel, name) != null);
134 }
135
136 private SessionContext getContext(Map objectModel, String name) {
137 SessionContext context = (SessionContext) objectModel.get(this.getClass().getName()+name);
138 if ( context != null ) {
139 SessionContextImpl r = (SessionContextImpl)context;
140 if (!(r.getRequest() == ObjectModelHelper.getRequest( objectModel))) {
141 context = null;
142 objectModel.remove(this.getClass().getName()+name);
143 }
144 }
145 return context;
146 }
147
148
151 public void service(ServiceManager manager) throws ServiceException {
152 this.manager = manager;
153 this.xpathProcessor = (XPathProcessor)this.manager.lookup(XPathProcessor.ROLE);
154 }
155
156
159 public void contextualize(Context context) throws ContextException {
160 this.context = context;
161 }
162
163
166 public void dispose() {
167 if ( this.manager != null ) {
168 this.manager.release(this.xpathProcessor);
169 this.xpathProcessor = null;
170 this.manager = null;
171 }
172 }
173 }
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