Changeset 4152 for trunk

Timestamp:

2003-04-15T12:32:24+12:00 (21 years ago)

Author:

kjdon

Message:

there are now two optional init-params for the servlet: receptionist and messagerouter. These specify the class name of a recept or MR subclass to use instead of the normal ones

File:

• trunk/gsdl3/src/java/org/greenstone/gsdl3/LibraryServlet.java (modified) (1 diff)

trunk/gsdl3/src/java/org/greenstone/gsdl3/LibraryServlet.java

@@ -68 +68 @@
     config_vars.createXML();
     
+    converter_ = new XMLConverter();
+    doc_ = converter_.newDOM();
+
+    // now try and create MR and recpt
     // new message router - create it and pass reference to recept.
     // the servlet wont use this directly
-    MessageRouter message_router = new MessageRouter();
+    String mr_name = (String)config.getInitParameter("messagerouter");
+    MessageRouter message_router = null;
+    if (mr_name == null) { // just use the normal MR
+        message_router = new MessageRouter();
+    } else { // try the specified one
+        try {
+        message_router = (MessageRouter)Class.forName("org.greenstone.gsdl3.core."+mr_name).newInstance();
+        } catch (Exception e) { // cant use this new one, so use normal one
+        System.out.println("LibraryServlet configure exception when trying to use a new MessageRouter "+mr_name+": "+e.getMessage());
+        e.printStackTrace();
+        message_router = new MessageRouter();
+        }
+        
+    }
     message_router.setSiteHome(GSFile.siteHome(config_vars.gsdl3_home_, 
-                            config_vars.site_name_));
+                           config_vars.site_name_));
     message_router.configure();
-
+    
     // the receptionist -the servlet will talk to this
-    recept_ = new Receptionist();
+    String recept_name = (String)config.getInitParameter("receptionist");
+    if (recept_name == null) {
+        recept_ = new Receptionist();
+    } else {
+        try {
+        recept_ = (Receptionist)Class.forName("org.greenstone.gsdl3.core."+recept_name).newInstance();
+        } catch (Exception e) { // cant use this new one, so use normal one
+        System.out.println("LibraryServlet configure exception when trying to use a new Receptionist "+recept_name+": "+e.getMessage());
+        e.printStackTrace();
+        recept_ = new Receptionist();
+        }
+    }
     recept_.setConfigVars(config_vars);
     recept_.setMessageRouter(message_router);
     recept_.configure();
-
-    converter_ = new XMLConverter();
-    doc_ = converter_.newDOM();
-
+    
     }