Now basing the implementation on a component graph.

[utils] / system / general / src / main / java / org / wamblee / system / graph / component / RequiredProvidedEdgeFactory.java

diff --git a/system/general/src/main/java/org/wamblee/system/graph/component/RequiredProvidedEdgeFactory.java b/system/general/src/main/java/org/wamblee/system/graph/component/RequiredProvidedEdgeFactory.java
new file mode 100644 (file)
index 0000000..983acba
--- /dev/null
+++ b/system/general/src/main/java/org/wamblee/system/graph/component/RequiredProvidedEdgeFactory.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2008 the original author or authors.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.wamblee.system.graph.component;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.wamblee.system.graph.DefaultEdge;
+import org.wamblee.system.graph.Edge;
+import org.wamblee.system.graph.EdgeFactory;
+import org.wamblee.system.graph.Node;
+
+/**
+ * Factory that creates links between required and provided interfaces.
+ * 
+ * @author Erik Brakkee
+ * 
+ */
+public class RequiredProvidedEdgeFactory implements EdgeFactory {
+
+    public RequiredProvidedEdgeFactory() {
+        // Empty.
+    }
+
+    @Override
+    public List<Edge> create(Node aFrom, Node aTo) {
+        List<Edge> result = new ArrayList<Edge>();
+        if (aFrom instanceof RequiredInterfaceNode) {
+            RequiredInterfaceNode required = (RequiredInterfaceNode) aFrom;
+            if (aTo instanceof ProvidedInterfaceNode) {
+             
+                ProvidedInterfaceNode provided = (ProvidedInterfaceNode) aTo;
+                if (required.getRequired()
+                        .implementedBy(provided.getProvided())) {
+                    result.add(new DefaultEdge(required, provided));
+                }
+            } else if (aTo instanceof ExternalRequiredInterfaceNode) {
+                ExternalRequiredInterfaceNode external = (ExternalRequiredInterfaceNode) aTo;
+                if ( required.getRequired().equals(external.getRequired())) { 
+                    result.add(new DefaultEdge(required, external));
+                }
+            }
+        } else if ( aFrom instanceof ProvidedInterfaceNode) { 
+            ProvidedInterfaceNode provided = (ProvidedInterfaceNode)aFrom;
+            if ( aTo instanceof ExternalProvidedInterfaceNode) { 
+                ExternalProvidedInterfaceNode external = (ExternalProvidedInterfaceNode)aTo;
+                if ( provided.getProvided().equals(external.getProvided())) { 
+                    result.add(new DefaultEdge(external, provided));
+                }
+            }
+        }
+        return result;
+    }
+
+}