/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.ivy.plugins.version;
import java.util.Comparator;
import java.util.List;
import org.apache.ivy.core.module.descriptor.ModuleDescriptor;
import org.apache.ivy.core.module.id.ModuleRevisionId;
import org.apache.ivy.core.module.status.Status;
import org.apache.ivy.core.module.status.StatusManager;
public class LatestVersionMatcher extends AbstractVersionMatcher {
public LatestVersionMatcher() {
super("latest");
}
public boolean isDynamic(ModuleRevisionId askedMrid) {
return askedMrid.getRevision().startsWith("latest.");
}
public boolean accept(ModuleRevisionId askedMrid, ModuleRevisionId foundMrid) {
return true;
}
public boolean needModuleDescriptor(ModuleRevisionId askedMrid, ModuleRevisionId foundMrid) {
List statuses = StatusManager.getCurrent().getStatuses();
Status lowest = (Status) statuses.get(statuses.size() - 1);
String latestLowest = "latest." + lowest.getName();
return !latestLowest.equals(askedMrid.getRevision());
}
public boolean accept(ModuleRevisionId askedMrid, ModuleDescriptor foundMD) {
String askedStatus = askedMrid.getRevision().substring("latest.".length());
return StatusManager.getCurrent().getPriority(askedStatus) >= StatusManager.getCurrent()
.getPriority(foundMD.getStatus());
}
/**
* If we don't need a module descriptor we can consider the dynamic revision to be greater. If
* we need a module descriptor then we can't know which one is greater and return 0.
*/
public int compare(ModuleRevisionId askedMrid, ModuleRevisionId foundMrid,
Comparator staticComparator) {
return needModuleDescriptor(askedMrid, foundMrid) ? 0 : 1;
}
}