2 * Copyright 2005-2010 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.system.graph.component;
18 import org.wamblee.system.core.SystemAssemblyException;
19 import org.wamblee.system.graph.Edge;
20 import org.wamblee.system.graph.Graph;
21 import org.wamblee.system.graph.Node;
22 import org.wamblee.system.graph.Visitor;
24 import java.util.List;
27 * Visitor that checks whether all externally provided interfaces are actually
28 * provided by any of the internal components.
30 * @author Erik Brakkee
32 public class CheckExternallyProvidedVisitor implements Visitor {
36 * Constructs the visitor.
41 public CheckExternallyProvidedVisitor(Graph aGraph) {
46 public void visitEdge(Edge aEdge) {
51 public void visitNode(Node aNode) {
52 if (aNode instanceof ExternalProvidedInterfaceNode) {
53 ExternalProvidedInterfaceNode provided = (ExternalProvidedInterfaceNode) aNode;
54 List<Edge> edges = graph.findOutgoing(provided);
56 if (edges.size() > 2) {
57 createDuplicateException(
58 "External provided interfaces has multiple internal matches",
62 if (edges.size() == 0) {
63 throw new SystemAssemblyException(
65 ": external provded interface is not provided by any of the internal components");
70 private void createDuplicateException(String aMsg, Node aNode,
72 StringBuffer buf = new StringBuffer();
73 buf.append(aNode + ": " + aMsg + ": ");
75 for (Edge edge : aEdges) {
76 buf.append(edge.getTo() + "/ ");
79 throw new SystemAssemblyException(buf.toString());