package org.apache.maven.repository.internal;
/*
* 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.
*/
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import org.sonatype.aether.RepositorySystemSession;
import org.sonatype.aether.artifact.Artifact;
import org.sonatype.aether.deployment.DeployRequest;
import org.sonatype.aether.impl.MetadataGenerator;
import org.sonatype.aether.installation.InstallRequest;
import org.sonatype.aether.metadata.Metadata;
/**
* @author Benjamin Bentmann
*/
class VersionsMetadataGenerator
implements MetadataGenerator
{
private Map<Object, VersionsMetadata> versions;
private Map<Object, VersionsMetadata> processedVersions;
public VersionsMetadataGenerator( RepositorySystemSession session, InstallRequest request )
{
this( session, request.getMetadata() );
}
public VersionsMetadataGenerator( RepositorySystemSession session, DeployRequest request )
{
this( session, request.getMetadata() );
}
private VersionsMetadataGenerator( RepositorySystemSession session, Collection<? extends Metadata> metadatas )
{
versions = new LinkedHashMap<Object, VersionsMetadata>();
processedVersions = new LinkedHashMap<Object, VersionsMetadata>();
/*
* NOTE: This should be considered a quirk to support interop with Maven's legacy ArtifactDeployer which
* processes one artifact at a time and hence cannot associate the artifacts from the same project to use the
* same version index. Allowing the caller to pass in metadata from a previous deployment allows to re-establish
* the association between the artifacts of the same project.
*/
for ( Iterator<? extends Metadata> it = metadatas.iterator(); it.hasNext(); )
{
Metadata metadata = it.next();
if ( metadata instanceof VersionsMetadata )
{
it.remove();
VersionsMetadata versionsMetadata = (VersionsMetadata) metadata;
processedVersions.put( versionsMetadata.getKey(), versionsMetadata );
}
}
}
public Collection<? extends Metadata> prepare( Collection<? extends Artifact> artifacts )
{
return Collections.emptyList();
}
public Artifact transformArtifact( Artifact artifact )
{
return artifact;
}
public Collection<? extends Metadata> finish( Collection<? extends Artifact> artifacts )
{
for ( Artifact artifact : artifacts )
{
Object key = VersionsMetadata.getKey( artifact );
if ( processedVersions.get( key ) == null )
{
VersionsMetadata versionsMetadata = versions.get( key );
if ( versionsMetadata == null )
{
versionsMetadata = new VersionsMetadata( artifact );
versions.put( key, versionsMetadata );
}
}
}
return versions.values();
}
}