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Java > Open Source Codes > org > eclipse > osgi > internal > module > GenericConstraint


1 /*******************************************************************************
2  * Copyright (c) 2006 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.osgi.internal.module;
12
13 import java.util.ArrayList JavaDoc;
14 import org.eclipse.osgi.service.resolver.VersionConstraint;
15
16 public class GenericConstraint extends ResolverConstraint {
17     private ArrayList JavaDoc matchingCapability;
18
19     GenericConstraint(ResolverBundle bundle, VersionConstraint constraint) {
20         super(bundle, constraint);
21     }
22
23     boolean isOptional() {
24         return false;
25     }
26
27     boolean isSatisfiedBy(VersionSupplier vs) {
28         return getVersionConstraint().isSatisfiedBy(vs.getBaseDescription());
29     }
30
31     public void setMatchingCapability(GenericCapability capability) {
32         if (capability == null) {
33             matchingCapability = null;
34             return;
35         }
36         if (matchingCapability == null)
37             matchingCapability = new ArrayList JavaDoc(1);
38         matchingCapability.add(capability);
39     }
40
41     public GenericCapability[] getMatchingCapabilities() {
42         return matchingCapability == null || matchingCapability.size() == 0 ? null : (GenericCapability[]) matchingCapability.toArray(new GenericCapability[matchingCapability.size()]);
43     }
44
45     void removeMatchingCapability(GenericCapability capability) {
46         if (matchingCapability != null)
47             matchingCapability.remove(capability);
48     }
49 }
50
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