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.impl;
020
021import org.eclipse.aether.RepositorySystem;
022import org.eclipse.aether.RepositorySystemSession;
023import org.eclipse.aether.resolution.VersionRequest;
024import org.eclipse.aether.resolution.VersionResolutionException;
025import org.eclipse.aether.resolution.VersionResult;
026
027/**
028 * Evaluates artifact meta/pseudo versions.
029 *
030 * @provisional This type is provisional and can be changed, moved or removed without prior notice.
031 */
032public interface VersionResolver {
033
034    /**
035     * Resolves an artifact's meta version (if any) to a concrete version. For example, resolves "1.0-SNAPSHOT" to
036     * "1.0-20090208.132618-23" or "RELEASE"/"LATEST" to "2.0".
037     *
038     * @param session The repository session, must not be {@code null}.
039     * @param request The version request, must not be {@code null}
040     * @return The version result, never {@code null}.
041     * @throws VersionResolutionException If the metaversion could not be resolved.
042     * @see RepositorySystem#resolveVersion(RepositorySystemSession, VersionRequest)
043     */
044    VersionResult resolveVersion(RepositorySystemSession session, VersionRequest request)
045            throws VersionResolutionException;
046}