1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.start.graph;
20
21 import java.util.HashSet;
22 import java.util.Set;
23
24 /**
25 * Should match against the provided set of {@link Selection#getCriteria()} values.
26 * <p>
27 * Incomplete set is considered to be no-match.
28 */
29 public class CriteriaSetPredicate implements Predicate
30 {
31 private final Set<String> criteriaSet;
32
33 public CriteriaSetPredicate(String... criterias)
34 {
35 this.criteriaSet = new HashSet<>();
36
37 for (String name : criterias)
38 {
39 this.criteriaSet.add(name);
40 }
41 }
42
43 @Override
44 public boolean match(Node<?> node)
45 {
46 Set<Selection> selections = node.getSelections();
47 if (selections == null)
48 {
49 // empty sources list
50 return false;
51 }
52
53 Set<String> actualCriterias = node.getSelectedCriteriaSet();
54
55 if (actualCriterias.size() != criteriaSet.size())
56 {
57 // non-equal sized set
58 return false;
59 }
60
61 for (String actualCriteria : actualCriterias)
62 {
63 if (!this.criteriaSet.contains(actualCriteria))
64 {
65 return false;
66 }
67 }
68 return true;
69 }
70
71 }