| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.eclipse.aether.util.graph.version; |
| |
| import org.eclipse.aether.RepositorySystemSession; |
| import org.eclipse.aether.artifact.Artifact; |
| import org.eclipse.aether.collection.DependencyCollectionContext; |
| import org.eclipse.aether.collection.VersionFilter; |
| import org.eclipse.aether.util.ConfigUtils; |
| |
| /** |
| * A version filter that blocks "*-SNAPSHOT" versions if the |
| * {@link org.eclipse.aether.collection.CollectRequest#getRootArtifact() root artifact} of the dependency graph is not a |
| * snapshot. Alternatively, this filter can be forced to always ban snapshot versions by setting the boolean |
| * {@link RepositorySystemSession#getConfigProperties() configuration property} {@link #CONFIG_PROP_ENABLE} to |
| * {@code true}. |
| */ |
| public final class ContextualSnapshotVersionFilter implements VersionFilter { |
| |
| /** |
| * The key in the repository session's {@link RepositorySystemSession#getConfigProperties() configuration |
| * properties} used to store a {@link Boolean} flag whether this filter should be forced to ban snapshots. By |
| * default, snapshots are only filtered if the root artifact is not a snapshot. |
| */ |
| public static final String CONFIG_PROP_ENABLE = "aether.snapshotFilter"; |
| |
| private final SnapshotVersionFilter filter; |
| |
| /** |
| * Creates a new instance of this version filter. |
| */ |
| public ContextualSnapshotVersionFilter() { |
| filter = new SnapshotVersionFilter(); |
| } |
| |
| private boolean isEnabled(RepositorySystemSession session) { |
| return ConfigUtils.getBoolean(session, false, CONFIG_PROP_ENABLE); |
| } |
| |
| public void filterVersions(VersionFilterContext context) { |
| if (isEnabled(context.getSession())) { |
| filter.filterVersions(context); |
| } |
| } |
| |
| public VersionFilter deriveChildFilter(DependencyCollectionContext context) { |
| if (!isEnabled(context.getSession())) { |
| Artifact artifact = context.getArtifact(); |
| if (artifact == null) { |
| // no root artifact to test, allow snapshots and recheck once we reach the direct dependencies |
| return this; |
| } |
| if (artifact.isSnapshot()) { |
| // root is a snapshot, allow snapshots all the way down |
| return null; |
| } |
| } |
| // artifact is a non-snapshot or filter explicitly enabled, block snapshots all the way down |
| return filter; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } else if (null == obj || !getClass().equals(obj.getClass())) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| return getClass().hashCode(); |
| } |
| } |