001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.eclipse.aether.util.graph.version;
020
021import java.util.Iterator;
022
023import org.eclipse.aether.collection.DependencyCollectionContext;
024import org.eclipse.aether.collection.VersionFilter;
025import org.eclipse.aether.version.Version;
026
027/**
028 * A version filter that (unconditionally) blocks "*-SNAPSHOT" versions. For practical purposes,
029 * {@link ContextualSnapshotVersionFilter} is usually more desirable.
030 */
031public final class SnapshotVersionFilter implements VersionFilter {
032
033    /**
034     * Creates a new instance of this version filter.
035     */
036    public SnapshotVersionFilter() {}
037
038    public void filterVersions(VersionFilterContext context) {
039        for (Iterator<Version> it = context.iterator(); it.hasNext(); ) {
040            String version = it.next().toString();
041            if (version.endsWith("SNAPSHOT")) {
042                it.remove();
043            }
044        }
045    }
046
047    public VersionFilter deriveChildFilter(DependencyCollectionContext context) {
048        return this;
049    }
050
051    @Override
052    public boolean equals(Object obj) {
053        if (this == obj) {
054            return true;
055        } else if (null == obj || !getClass().equals(obj.getClass())) {
056            return false;
057        }
058        return true;
059    }
060
061    @Override
062    public int hashCode() {
063        return getClass().hashCode();
064    }
065}