1 files changed, 132 insertions, 0 deletions
diff --git a/framework/src/maven/apache-maven-3.3.3/maven-model-builder/src/main/java/org/apache/maven/model/building/ModelCacheTag.java b/framework/src/maven/apache-maven-3.3.3/maven-model-builder/src/main/java/org/apache/maven/model/building/ModelCacheTag.java
new file mode 100644
index 00000000..8452f967
--- /dev/null
+++ b/framework/src/maven/apache-maven-3.3.3/maven-model-builder/src/main/java/org/apache/maven/model/building/ModelCacheTag.java
@@ -0,0 +1,132 @@
+package org.apache.maven.model.building;
+
+/*
+ * 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 org.apache.maven.model.DependencyManagement;
+import org.apache.maven.model.Model;
+
+/**
+ * Describes a tag used by the model builder to access a {@link ModelCache}. This interface basically aggregates a name
+ * and a class to provide some type safety when working with the otherwise untyped cache.
+ *
+ * @author Benjamin Bentmann
+ * @param <T> The type of data associated with the tag.
+ */
+interface ModelCacheTag<T>
+{
+
+    /**
+     * Gets the name of the tag.
+     *
+     * @return The name of the tag, must not be {@code null}.
+     */
+    String getName();
+
+    /**
+     * Gets the type of data associated with this tag.
+     *
+     * @return The type of data, must not be {@code null}.
+     */
+    Class<T> getType();
+
+    /**
+     * Creates a copy of the data suitable for storage in the cache. The original data to store can be mutated after the
+     * cache is populated but the state of the cache must not change so we need to make a copy.
+     *
+     * @param data The data to store in the cache, must not be {@code null}.
+     * @return The data being stored in the cache, never {@code null}.
+     */
+    T intoCache( T data );
+
+    /**
+     * Creates a copy of the data suitable for retrieval from the cache. The retrieved data can be mutated after the
+     * cache is queried but the state of the cache must not change so we need to make a copy.
+     *
+     * @param data The data to retrieve from the cache, must not be {@code null}.
+     * @return The data being retrieved from the cache, never {@code null}.
+     */
+    T fromCache( T data );
+
+    /**
+     * The tag used to denote raw model data.
+     */
+    ModelCacheTag<ModelData> RAW = new ModelCacheTag<ModelData>()
+    {
+
+        @Override
+        public String getName()
+        {
+            return "raw";
+        }
+
+        @Override
+        public Class<ModelData> getType()
+        {
+            return ModelData.class;
+        }
+
+        @Override
+        public ModelData intoCache( ModelData data )
+        {
+            Model model = ( data.getModel() != null ) ? data.getModel().clone() : null;
+            return new ModelData( data.getSource(), model, data.getGroupId(), data.getArtifactId(), data.getVersion() );
+        }
+
+        @Override
+        public ModelData fromCache( ModelData data )
+        {
+            return intoCache( data );
+        }
+
+    };
+
+    /**
+     * The tag used to denote an effective dependency management section from an imported model.
+     */
+    ModelCacheTag<DependencyManagement> IMPORT = new ModelCacheTag<DependencyManagement>()
+    {
+
+        @Override
+        public String getName()
+        {
+            return "import";
+        }
+
+        @Override
+        public Class<DependencyManagement> getType()
+        {
+            return DependencyManagement.class;
+        }
+
+        @Override
+        public DependencyManagement intoCache( DependencyManagement data )
+        {
+            return ( data != null ) ? data.clone() : null;
+        }
+
+        @Override
+        public DependencyManagement fromCache( DependencyManagement data )
+        {
+            return intoCache( data );
+        }
+
+    };
+
+}