01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18: package org.apache.ivy.plugins.version;
19:
20: import java.util.Comparator;
21:
22: import org.apache.ivy.core.module.descriptor.ModuleDescriptor;
23: import org.apache.ivy.core.module.id.ModuleRevisionId;
24: import org.apache.ivy.core.module.status.StatusManager;
25:
26: public class LatestVersionMatcher extends AbstractVersionMatcher {
27: public LatestVersionMatcher() {
28: super ("latest");
29: }
30:
31: public boolean isDynamic(ModuleRevisionId askedMrid) {
32: return askedMrid.getRevision().startsWith("latest.");
33: }
34:
35: public boolean accept(ModuleRevisionId askedMrid,
36: ModuleRevisionId foundMrid) {
37: return true;
38: }
39:
40: public boolean needModuleDescriptor(ModuleRevisionId askedMrid,
41: ModuleRevisionId foundMrid) {
42: return !"latest.integration".equals(askedMrid.getRevision());
43: }
44:
45: public boolean accept(ModuleRevisionId askedMrid,
46: ModuleDescriptor foundMD) {
47: String askedStatus = askedMrid.getRevision().substring(
48: "latest.".length());
49: return StatusManager.getCurrent().getPriority(askedStatus) >= StatusManager
50: .getCurrent().getPriority(foundMD.getStatus());
51: }
52:
53: /**
54: * If we don't need a module descriptor we can consider the dynamic revision to be greater. If
55: * we need a module descriptor then we can't know which one is greater and return 0.
56: */
57: public int compare(ModuleRevisionId askedMrid,
58: ModuleRevisionId foundMrid, Comparator staticComparator) {
59: return needModuleDescriptor(askedMrid, foundMrid) ? 0 : 1;
60: }
61: }
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