X-Git-Url: http://wamblee.org/gitweb/?a=blobdiff_plain;f=system%2Fgeneral%2Fsrc%2Fmain%2Fjava%2Forg%2Fwamblee%2Fsystem%2Fgraph%2Fcomponent%2FComponentGraph.java;h=f772299bcc53ad990c1be9d0593ac8f9608a80c1;hb=0d8d8f24656e585ee75558cfd6a4c661f8f14985;hp=008f0026c1127750598fcde2c5f5b296f299951c;hpb=32a8562695029cf13d915bc7941a61fe07ff0005;p=utils

diff --git a/system/general/src/main/java/org/wamblee/system/graph/component/ComponentGraph.java b/system/general/src/main/java/org/wamblee/system/graph/component/ComponentGraph.java
index 008f0026..f772299b 100644
--- a/system/general/src/main/java/org/wamblee/system/graph/component/ComponentGraph.java
+++ b/system/general/src/main/java/org/wamblee/system/graph/component/ComponentGraph.java
@@ -36,13 +36,15 @@ import org.wamblee.system.graph.Node;
  */
 public class ComponentGraph extends Graph {
     
-    private CompositeEdgeFilter _edgeFilter; 
+    private boolean isLinked; 
+    private CompositeEdgeFilter edgeFilter; 
 
     /**
      * Constructs an empty component graph. 
      */
     public ComponentGraph() {
-        _edgeFilter = new CompositeEdgeFilter(); 
+        isLinked = false; 
+        edgeFilter = new CompositeEdgeFilter(); 
     }
     
     /**
@@ -71,7 +73,7 @@ public class ComponentGraph extends Graph {
      */
     public void validate() { 
         extend(new RequiredProvidedEdgeFactory());
-        applyFilter(_edgeFilter);
+        applyFilter(edgeFilter);
         accept(new CheckRequiredProvidedMultiplicityVisitor(this));
         accept(new CheckExternallyRequiredVisitor(this)); 
         accept(new CheckExternallyProvidedVisitor(this));
@@ -82,8 +84,12 @@ public class ComponentGraph extends Graph {
      * Links provided and required interfaces together in the component
      * model based on the graph model. 
      */
-    public void link() { 
+    public void link() {
+        if ( isLinked ) { 
+            return; 
+        }
         accept(new LinkVisitor());
+        isLinked = true; 
     }
     
     /**
@@ -143,6 +149,6 @@ public class ComponentGraph extends Graph {
     }
 
     public void addEdgeFilter(CompositeEdgeFilter aEdgeFilter) {
-        _edgeFilter.add(aEdgeFilter);    
+        edgeFilter.add(aEdgeFilter);    
     }
 }