1 files changed, 45 insertions, 0 deletions
diff --git a/src/main/java/com/c2kernel/collection/AggregationInstance.java b/src/main/java/com/c2kernel/collection/AggregationInstance.java
new file mode 100644
index 0000000..47e7c41
--- /dev/null
+++ b/src/main/java/com/c2kernel/collection/AggregationInstance.java
@@ -0,0 +1,45 @@
+package com.c2kernel.collection;
+
+/**
+ * @version $Revision: 1.30 $ $Date: 2003/06/04 13:21:24 $
+ * @author  $Author: abranson $
+ */
+
+import com.c2kernel.graph.model.GraphPoint;
+import com.c2kernel.utils.CastorHashMap;
+
+public class AggregationInstance extends Aggregation
+{
+
+    public AggregationInstance()
+    {
+    	setName("AggregationInstance");
+    }
+
+    public AggregationInstance(String name)
+    {
+    	setName(name);
+    }
+
+
+    @Override
+	public AggregationMember addMember(int entityKey, CastorHashMap props, String classProps)
+        throws MembershipException
+    {
+        if( entityKey!=-1 && exists(entityKey))
+            throw new MembershipException(entityKey+" already exists in this collection.");
+        else
+            return super.addMember(entityKey, props, classProps);
+    }
+
+    @Override
+	public AggregationMember addMember(int entityKey, CastorHashMap props, String classProps, GraphPoint location, int w, int h)
+        throws MembershipException
+    {
+        if( entityKey!=-1 && exists(entityKey))
+			throw new MembershipException(entityKey+" already exists in this collection.");
+        else
+            return super.addMember(entityKey, props, classProps, location, w, h);
+    }
+}
+