/*
* 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.
*/
package org.wamblee.system.graph.component;
-import java.util.List;
-
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
+
import org.wamblee.system.core.SystemAssemblyException;
import org.wamblee.system.graph.Edge;
import org.wamblee.system.graph.Graph;
import org.wamblee.system.graph.Node;
import org.wamblee.system.graph.Visitor;
+import java.util.List;
+
+
/**
- * Visitor that checks whether all required external interfaces of the container
- * are provided.
- *
+ * Visitor that checks whether all required external interfaces of the
+ * container are provided.
+ *
* @author Erik Brakkee
- *
*/
public class CheckExternallyRequiredVisitor implements Visitor {
-
+ /**
+ * DOCUMENT ME!
+ */
private Log LOG = LogFactory.getLog(CheckExternallyRequiredVisitor.class);
+ /**
+ * DOCUMENT ME!
+ */
private Graph graph;
+ /**
+ * Creates a new CheckExternallyRequiredVisitor object.
+ *
+ * @param aGraph DOCUMENT ME!
+ */
public CheckExternallyRequiredVisitor(Graph aGraph) {
graph = aGraph;
}
+ /**
+ * DOCUMENT ME!
+ *
+ * @param aEdge DOCUMENT ME!
+ */
@Override
public void visitEdge(Edge aEdge) {
// Empty.
}
+ /**
+ * DOCUMENT ME!
+ *
+ * @param aNode DOCUMENT ME!
+ */
@Override
public void visitNode(Node aNode) {
if (aNode instanceof ExternalRequiredInterfaceNode) {
ExternalRequiredInterfaceNode required = (ExternalRequiredInterfaceNode) aNode;
+
if (!required.getRequired().isOptional()
- && required.getRequired().getProvider() == null) {
+ && (required.getRequired().getProvider() == null)) {
throw new SystemAssemblyException(aNode
- + ": External required interface is not provided");
+ + ": External required interface is not provided");
}
List<Edge> edges = graph.findIncoming(aNode);
if (edges.isEmpty()) {
LOG.warn(aNode + ": Superfluous required interface");
}
+
for (Edge edge : edges) {
Node from = edge.getFrom();
assert from instanceof RequiredInterfaceNode;
- RequiredInterfaceNode reqNode = (RequiredInterfaceNode)from;
+
+ RequiredInterfaceNode reqNode = (RequiredInterfaceNode) from;
+
if (!reqNode.getRequired().isOptional()
&& required.getRequired().isOptional()) {
- throw new SystemAssemblyException(
- aNode
- + ": externally required interface is optional but a corresponding internal required interface is mandatory: "
- + reqNode);
+ throw new SystemAssemblyException(aNode
+ + ": externally required interface is optional but a corresponding internal required interface is mandatory: "
+ + reqNode);
}
}
}
}
-
}