Work on JCR remoting

[lgpl/argeo-commons.git] / server / runtime / org.argeo.server.jackrabbit / src / main / java / org / argeo / server / jackrabbit / webdav / CachingSessionProvider.java

diff --git a/server/runtime/org.argeo.server.jackrabbit/src/main/java/org/argeo/server/jackrabbit/webdav/CachingSessionProvider.java b/server/runtime/org.argeo.server.jackrabbit/src/main/java/org/argeo/server/jackrabbit/webdav/CachingSessionProvider.java
new file mode 100644 (file)
index 0000000..ad30187
--- /dev/null
+++ b/server/runtime/org.argeo.server.jackrabbit/src/main/java/org/argeo/server/jackrabbit/webdav/CachingSessionProvider.java
@@ -0,0 +1,57 @@
+package org.argeo.server.jackrabbit.webdav;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.jcr.LoginException;
+import javax.jcr.Repository;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.jackrabbit.server.SessionProvider;
+
+public class CachingSessionProvider implements SessionProvider {
+       private static final String JCR_SESSIONS_ATTRIBUTE = "jcrSessions";
+
+       private final static Log log = LogFactory
+                       .getLog(CachingSessionProvider.class);
+
+       @SuppressWarnings("unchecked")
+       public Session getSession(HttpServletRequest request, Repository rep,
+                       String workspace) throws LoginException, ServletException,
+                       RepositoryException {
+               HttpSession httpSession = request.getSession();
+
+               if (httpSession.getAttribute(JCR_SESSIONS_ATTRIBUTE) == null) {
+                       httpSession
+                                       .setAttribute(JCR_SESSIONS_ATTRIBUTE, Collections
+                                                       .synchronizedMap(new HashMap<String, Session>()));
+               }
+               Map<String, Session> sessions = (Map<String, Session>) httpSession
+                               .getAttribute(JCR_SESSIONS_ATTRIBUTE);
+               if (!sessions.containsKey(workspace)) {
+                       Session session = rep.login(workspace);
+                       sessions.put(workspace, session);
+                       return session;
+               } else {
+                       Session session = sessions.get(workspace);
+                       if (!session.isLive()) {
+                               session = rep.login(workspace);
+                       }
+                       return session;
+               }
+       }
+
+       public void releaseSession(Session session) {
+               if (log.isDebugEnabled())
+                       log.debug("Releasing JCR session " + session);
+               session.logout();
+       }
+
+}