diff -r bb594abac796 -r 4e0998805276 src/java/de/uapcore/lightpit/Constants.java
--- a/src/java/de/uapcore/lightpit/Constants.java	Tue Dec 26 19:45:31 2017 +0100
+++ b/src/java/de/uapcore/lightpit/Constants.java	Sat Dec 30 20:35:23 2017 +0100
@@ -49,6 +49,16 @@
     public static final String CTX_ATTR_LANGUAGES = "available-languages";
     
     /**
+     * Name for the context parameter optionally specifying the JNDI context;
+     */
+    public static final String CTX_ATTR_JNDI_CONTEXT = "jndi-context";
+    
+    /**
+     * Name for the context parameter optionally specifying a database schema.
+     */
+    public static final String CTX_ATTR_DB_SCHEMA = "db-schema";
+    
+    /**
      * Key for the request attribute containing the class name of the currently dispatching module.
      */
     public static final String REQ_ATTR_MODULE_CLASSNAME = fqn(AbstractLightPITServlet.class, "moduleClassname");