2 * Copyright 2008 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;
28 * Visitor that checks whether all externally provided interfaces are
29 * actually provided by any of the internal components.
31 * @author Erik Brakkee
33 public class CheckExternallyProvidedVisitor implements Visitor {
40 * Constructs the visitor.
41 * @param aGraph Component graph.
43 public CheckExternallyProvidedVisitor(Graph aGraph) {
50 * @param aEdge DOCUMENT ME!
53 public void visitEdge(Edge aEdge) {
60 * @param aNode DOCUMENT ME!
63 public void visitNode(Node aNode) {
64 if (aNode instanceof ExternalProvidedInterfaceNode) {
65 ExternalProvidedInterfaceNode provided = (ExternalProvidedInterfaceNode) aNode;
66 List<Edge> edges = graph
67 .findOutgoing(provided);
69 if (edges.size() > 2) {
70 createDuplicateException("External provided interfaces has multiple internal matches",
74 if (edges.size() == 0) {
75 throw new SystemAssemblyException(aNode
76 + ": external provded interface is not provided by any of the internal components");
84 * @param aMsg DOCUMENT ME!
85 * @param aNode DOCUMENT ME!
86 * @param edges DOCUMENT ME!
88 private void createDuplicateException(String aMsg, Node aNode,
90 StringBuffer buf = new StringBuffer();
91 buf.append(aNode + ": " + aMsg + ": ");
93 for (Edge edge : edges) {
94 buf.append(edge.getTo() + "/ ");
97 throw new SystemAssemblyException(buf.toString());