1 files changed, 108 insertions, 0 deletions
diff --git a/framework/src/maven/apache-maven-3.3.3/maven-aether-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGenerator.java b/framework/src/maven/apache-maven-3.3.3/maven-aether-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGenerator.java
new file mode 100644
index 00000000..e2f5e82d
--- /dev/null
+++ b/framework/src/maven/apache-maven-3.3.3/maven-aether-provider/src/main/java/org/apache/maven/repository/internal/VersionsMetadataGenerator.java
@@ -0,0 +1,108 @@
+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.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.deployment.DeployRequest;
+import org.eclipse.aether.impl.MetadataGenerator;
+import org.eclipse.aether.installation.InstallRequest;
+import org.eclipse.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();
+    }
+
+}