--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/org/dive4elements/river/artifacts/context/SessionCallContextListener.java	Thu Apr 25 12:06:39 2013 +0200
@@ -0,0 +1,68 @@
+package org.dive4elements.river.artifacts.context;
+
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+
+import org.hibernate.Session;
+
+import org.dive4elements.river.backend.SessionHolder;
+
+import org.dive4elements.artifacts.CallContext;
+import org.dive4elements.artifacts.CallContext.Listener;
+
+
+/**
+ * This CallContextListener is used to initialize a ThreadLocal variable in
+ * each CallContext (for each request) that holds Sessions.
+ *
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public class SessionCallContextListener implements Listener {
+
+    public static final String SESSION_KEY = "context.session";
+
+    /** The logger that is used in this class.*/
+    private static Logger logger =
+        Logger.getLogger(SessionCallContextListener.class);
+
+
+    public SessionCallContextListener() {
+    }
+
+
+    public void setup(Document config, Node listenerConfig) {
+        // nothing to do here
+    }
+
+
+    /**
+     * Initializes a ThreadLocal variable that is used to hold sessions.
+     *
+     * @param context The CallContext.
+     */
+    public void init(CallContext context) {
+        logger.debug("SessionCallContextListener.init");
+
+        Session session = SessionHolder.acquire();
+
+        context.putContextValue(SESSION_KEY, session);
+    }
+
+
+    /**
+     * Closes open sessions of the ThreadLocal variable opened in init().
+     *
+     * @param context The CallContext.
+     */
+    public void close(CallContext context) {
+        logger.debug("SessionCallContextListener.close");
+
+        Session session = (Session)context.getContextValue(SESSION_KEY);
+        session.close();
+
+        SessionHolder.release();
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :