Edge filter implemented for explicitly connecting required interfaces.

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

diff --git a/system/general/src/main/java/org/wamblee/system/graph/component/ConnectExternalProvidedProvidedFilter.java b/system/general/src/main/java/org/wamblee/system/graph/component/ConnectExternalProvidedProvidedFilter.java
new file mode 100644 (file)
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+++ b/system/general/src/main/java/org/wamblee/system/graph/component/ConnectExternalProvidedProvidedFilter.java
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+/*
+ * 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 org.wamblee.system.graph.Edge;
+import org.wamblee.system.graph.EdgeFilter;
+import org.wamblee.system.graph.EdgeSelector;
+import org.wamblee.system.graph.Node;
+
+/**
+ * Filter used to explicitly connect required and provided interfaces within a
+ * container.
+ * 
+ * @author Erik Brakkee
+ * 
+ */
+public class ConnectExternalProvidedProvidedFilter implements EdgeFilter {
+
+    private String _externalProvided;
+    private String _component;
+    private String _provided;
+
+    public ConnectExternalProvidedProvidedFilter(String aExternalProvided, String aComponent,
+            String aProvided) {
+        _externalProvided = aExternalProvided; 
+        _component = aComponent; 
+        _provided = aProvided; 
+        if ( _externalProvided == null ) { 
+            throw new IllegalArgumentException("External provided interface name must be specified."); 
+        }
+        if ( _component == null ) { 
+            throw new IllegalArgumentException("Component name must be specified");
+        }
+        if ( _provided == null ) { 
+            throw new IllegalArgumentException("Provided interface name of internal component must be specified");
+        }
+    }
+
+    @Override
+    public boolean isViolated(Edge aEdge) {
+        if (aEdge.getFrom() instanceof ExternalProvidedInterfaceNode
+                && aEdge.getTo() instanceof ProvidedInterfaceNode) {
+            return isViolated((ExternalProvidedInterfaceNode) aEdge.getFrom(),
+                    (ProvidedInterfaceNode) aEdge.getTo());
+        }
+        return false;
+    }
+
+    private boolean isViolated(ExternalProvidedInterfaceNode aFrom,
+            ProvidedInterfaceNode aTo) {
+        if ( !aFrom.getName().equals(_externalProvided)) { 
+            return false; // wrong provided interface.
+        }
+        if ( aTo.getComponent().getName().equals(_component) && 
+               aTo.getProvided().getName().equals(_provided) ) { 
+            return false; // ok 
+        }
+        return true; 
+    }
+}