001package org.eclipse.aether.util.graph.version;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 * 
012 *  http://www.apache.org/licenses/LICENSE-2.0
013 * 
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.util.Iterator;
023
024import org.eclipse.aether.collection.DependencyCollectionContext;
025import org.eclipse.aether.collection.VersionFilter;
026import org.eclipse.aether.version.Version;
027
028/**
029 * A version filter that (unconditionally) blocks "*-SNAPSHOT" versions. For practical purposes,
030 * {@link ContextualSnapshotVersionFilter} is usually more desirable.
031 */
032public final class SnapshotVersionFilter
033    implements VersionFilter
034{
035
036    /**
037     * Creates a new instance of this version filter.
038     */
039    public SnapshotVersionFilter()
040    {
041    }
042
043    public void filterVersions( VersionFilterContext context )
044    {
045        for ( Iterator<Version> it = context.iterator(); it.hasNext(); )
046        {
047            String version = it.next().toString();
048            if ( version.endsWith( "SNAPSHOT" ) )
049            {
050                it.remove();
051            }
052        }
053    }
054
055    public VersionFilter deriveChildFilter( DependencyCollectionContext context )
056    {
057        return this;
058    }
059
060    @Override
061    public boolean equals( Object obj )
062    {
063        if ( this == obj )
064        {
065            return true;
066        }
067        else if ( null == obj || !getClass().equals( obj.getClass() ) )
068        {
069            return false;
070        }
071        return true;
072    }
073
074    @Override
075    public int hashCode()
076    {
077        return getClass().hashCode();
078    }
079
080}