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.graph.Edge;
19 import org.wamblee.system.graph.EdgeFilter;
20 import org.wamblee.system.graph.EdgeSelector;
21 import org.wamblee.system.graph.Node;
24 * Filter used to explicitly connect required and provided interfaces within a
27 * @author Erik Brakkee
30 public class ConnectRequiredProvidedEdgeFilter implements EdgeFilter {
32 private String _client;
33 private String _required;
34 private String _server;
35 private String _provided;
37 public ConnectRequiredProvidedEdgeFilter(String aClient, String aRequired,
38 String aServer, String aProvided) {
40 _required = aRequired;
42 _provided = aProvided;
43 if ( _client == null ) {
44 throw new IllegalArgumentException("Client component must be specified");
49 public boolean isViolated(Edge aEdge) {
50 if (aEdge.getFrom() instanceof RequiredInterfaceNode
51 && aEdge.getTo() instanceof ProvidedInterfaceNode) {
52 return isViolated((RequiredInterfaceNode) aEdge.getFrom(),
53 (ProvidedInterfaceNode) aEdge.getTo());
58 private boolean isViolated(RequiredInterfaceNode aFrom,
59 ProvidedInterfaceNode aTo) {
60 if (_client.equals(aFrom.getComponent().getName())
61 && (_required == null || _required.equals(aFrom.getRequired()
64 if ( _server == null ) {
65 return true; // all connections are eliminated
67 if (_server.equals(aTo.getComponent().getName())
68 && (_provided == null || _provided.equals(aTo.getProvided()
70 // to part matches also
74 // From matches and to doesn't so edgefilter is violated.
78 // From part does not match, restriction does not apply.