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.internal.impl.version;
020
021import javax.inject.Inject;
022import javax.inject.Named;
023import javax.inject.Singleton;
024
025import java.util.Collections;
026import java.util.Map;
027
028import org.eclipse.aether.ConfigurationProperties;
029import org.eclipse.aether.RepositorySystemSession;
030import org.eclipse.aether.spi.version.VersionSchemeSelector;
031import org.eclipse.aether.util.ConfigUtils;
032import org.eclipse.aether.version.VersionScheme;
033
034import static java.util.Objects.requireNonNull;
035
036/**
037 * Default implementation.
038 *
039 * @since 2.0.0
040 */
041@Singleton
042@Named
043public class DefaultVersionSchemeSelector implements VersionSchemeSelector {
044    static final String CONFIG_PROPS_PREFIX = ConfigurationProperties.PREFIX_AETHER + "versionScheme.";
045
046    /**
047     * The name of the version scheme to be used in session.
048     *
049     * @configurationSource {@link RepositorySystemSession#getConfigProperties()}
050     * @configurationType {@link java.lang.String}
051     * @configurationDefaultValue {@link #DEFAULT_VERSION_SCHEME_NAME}
052     */
053    public static final String CONFIG_PROP_VERSION_SCHEME_NAME = CONFIG_PROPS_PREFIX + "name";
054
055    public static final String DEFAULT_VERSION_SCHEME_NAME = GenericVersionSchemeProvider.NAME;
056
057    private final Map<String, VersionScheme> versionSchemes;
058
059    @Inject
060    public DefaultVersionSchemeSelector(Map<String, VersionScheme> versionSchemes) {
061        this.versionSchemes = requireNonNull(versionSchemes);
062    }
063
064    @Override
065    public VersionScheme selectVersionScheme(String schemeName) {
066        requireNonNull(schemeName, "null schemeName");
067        VersionScheme versionScheme = versionSchemes.get(schemeName);
068        if (versionScheme == null) {
069            throw new IllegalArgumentException("scheme not supported");
070        }
071        return versionScheme;
072    }
073
074    @Override
075    public VersionScheme selectVersionScheme(RepositorySystemSession session) {
076        return selectVersionScheme(
077                ConfigUtils.getString(session, DEFAULT_VERSION_SCHEME_NAME, CONFIG_PROP_VERSION_SCHEME_NAME));
078    }
079
080    @Override
081    public Map<String, VersionScheme> getVersionSchemes() {
082        return Collections.unmodifiableMap(versionSchemes);
083    }
084}