1 files changed, 30 insertions, 0 deletions
diff --git a/src/main/java/com/c2kernel/gui/lifecycle/desc/WfEdgeDefFactory.java b/src/main/java/com/c2kernel/gui/lifecycle/desc/WfEdgeDefFactory.java
new file mode 100644
index 0000000..082a4a2
--- /dev/null
+++ b/src/main/java/com/c2kernel/gui/lifecycle/desc/WfEdgeDefFactory.java
@@ -0,0 +1,30 @@
+package com.c2kernel.gui.lifecycle.desc;
+import com.c2kernel.graph.model.DirectedEdge;
+import com.c2kernel.graph.model.EdgeFactory;
+import com.c2kernel.graph.model.GraphModelManager;
+import com.c2kernel.graph.model.TypeNameAndConstructionInfo;
+import com.c2kernel.graph.model.Vertex;
+import com.c2kernel.lifecycle.NextDef;
+import com.c2kernel.lifecycle.WfVertexDef;
+public class WfEdgeDefFactory implements EdgeFactory
+{
+	@Override
+	public void create(
+		GraphModelManager graphModelManager,
+		Vertex origin,
+		Vertex terminus,
+		TypeNameAndConstructionInfo typeNameAndConstructionInfo)
+	{
+		if (validCreation(graphModelManager, origin, terminus))
+				{
+					NextDef nextDef = new NextDef((WfVertexDef) origin, (WfVertexDef) terminus);
+					graphModelManager.getModel().addEdgeAndCreateId(nextDef, origin, terminus);
+				}
+	}
+	private static boolean validCreation(GraphModelManager graphModelManager, Vertex origin, Vertex terminus)
+	{
+		DirectedEdge[] connectingEdgesAToB = graphModelManager.getModel().getConnectingEdges(origin.getID(), terminus.getID());
+		DirectedEdge[] connectingEdgesBToA = graphModelManager.getModel().getConnectingEdges(terminus.getID(), origin.getID());
+		return (origin != terminus) && (connectingEdgesAToB.length == 0) && (connectingEdgesBToA.length == 0);
+	}
+}