001package org.eclipse.aether.impl;
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 org.eclipse.aether.RepositorySystem;
023import org.eclipse.aether.RepositorySystemSession;
024import org.eclipse.aether.resolution.VersionRequest;
025import org.eclipse.aether.resolution.VersionResolutionException;
026import org.eclipse.aether.resolution.VersionResult;
027
028/**
029 * Evaluates artifact meta/pseudo versions.
030 * 
031 * @provisional This type is provisional and can be changed, moved or removed without prior notice.
032 */
033public interface VersionResolver
034{
035
036    /**
037     * Resolves an artifact's meta version (if any) to a concrete version. For example, resolves "1.0-SNAPSHOT" to
038     * "1.0-20090208.132618-23" or "RELEASE"/"LATEST" to "2.0".
039     * 
040     * @param session The repository session, must not be {@code null}.
041     * @param request The version request, must not be {@code null}
042     * @return The version result, never {@code null}.
043     * @throws VersionResolutionException If the metaversion could not be resolved.
044     * @see RepositorySystem#resolveVersion(RepositorySystemSession, VersionRequest)
045     */
046    VersionResult resolveVersion( RepositorySystemSession session, VersionRequest request )
047        throws VersionResolutionException;
048
049}