X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=src%2Fnepi%2Fresources%2Fns3%2Fns3application.py;h=64bacf7f8d9ef8f24e41c3bcf18a4b68fe2c8317;hb=94e7d9b143ab9ea609ef367cad7d49d45dabef8b;hp=1007c5f43eaf29628bb5c29972a12d898312b233;hpb=ac866efb762875550bdc0c05d693e5eb026f435e;p=nepi.git

diff --git a/src/nepi/resources/ns3/ns3application.py b/src/nepi/resources/ns3/ns3application.py
index 1007c5f4..64bacf7f 100644
--- a/src/nepi/resources/ns3/ns3application.py
+++ b/src/nepi/resources/ns3/ns3application.py
@@ -24,17 +24,24 @@ from nepi.resources.ns3.ns3base import NS3Base
 class NS3BaseApplication(NS3Base):
     _rtype = "abstract::ns3::Application"
 
+    def __init__(self, ec, guid):
+        super(NS3BaseApplication, self).__init__(ec, guid)
+        self._node = None
+ 
     @property
     def node(self):
-        from nepi.resources.ns3.ns3node import NS3BaseNode
-        nodes = self.get_connected(NS3BaseNode.get_rtype())
+        if not self._node:
+            from nepi.resources.ns3.ns3node import NS3BaseNode
+            nodes = self.get_connected(NS3BaseNode.get_rtype())
 
-        if not nodes: 
-            msg = "Application not connected to node"
-            self.error(msg)
-            raise RuntimeError, msg
+            if not nodes: 
+                msg = "Application not connected to node"
+                self.error(msg)
+                raise RuntimeError, msg
 
-        return nodes[0]
+            self._node = nodes[0]
+
+        return self._node
 
     @property
     def _rms_to_wait(self):