org.eclipse.aether.util.graph.version.HighestVersionFilter Maven / Gradle / Ivy
/*
* 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.eclipse.aether.util.graph.version;
import java.util.Iterator;
import org.eclipse.aether.collection.DependencyCollectionContext;
import org.eclipse.aether.collection.VersionFilter;
import org.eclipse.aether.version.Version;
/**
* A version filter that excludes any version except the highest one.
*/
public final class HighestVersionFilter implements VersionFilter {
/**
* Creates a new instance of this version filter.
*/
public HighestVersionFilter() {}
public void filterVersions(VersionFilterContext context) {
Iterator it = context.iterator();
for (boolean hasNext = it.hasNext(); hasNext; ) {
it.next();
hasNext = it.hasNext();
if (hasNext) {
it.remove();
}
}
}
public VersionFilter deriveChildFilter(DependencyCollectionContext context) {
return this;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
} else if (null == obj || !getClass().equals(obj.getClass())) {
return false;
}
return true;
}
@Override
public int hashCode() {
return getClass().hashCode();
}
}