1 files changed, 54 insertions, 0 deletions
diff --git a/framework/src/maven/apache-maven-3.3.3/maven-model-builder/src/main/java/org/apache/maven/model/normalization/ModelNormalizer.java b/framework/src/maven/apache-maven-3.3.3/maven-model-builder/src/main/java/org/apache/maven/model/normalization/ModelNormalizer.java
new file mode 100644
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+++ b/framework/src/maven/apache-maven-3.3.3/maven-model-builder/src/main/java/org/apache/maven/model/normalization/ModelNormalizer.java
@@ -0,0 +1,54 @@
+package org.apache.maven.model.normalization;
+
+/*
+ * 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.Model;
+import org.apache.maven.model.building.ModelBuildingRequest;
+import org.apache.maven.model.building.ModelProblemCollector;
+
+/**
+ * Handles normalization of a model. In this context, normalization is the process of producing a canonical
+ * representation for models that physically look different but are semantically equivalent.
+ *
+ * @author Benjamin Bentmann
+ */
+public interface ModelNormalizer
+{
+
+    /**
+     * Merges duplicate elements like multiple declarations of the same build plugin in the specified model.
+     *
+     * @param model The model whose duplicate elements should be merged, must not be {@code null}.
+     * @param request The model building request that holds further settings, must not be {@code null}.
+     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
+     */
+    void mergeDuplicates( Model model, ModelBuildingRequest request, ModelProblemCollector problems );
+
+    /**
+     * Sets default values in the specified model that for technical reasons cannot be set directly in the Modello
+     * definition.
+     *
+     * @param model The model in which to set the default values, must not be {@code null}.
+     * @param request The model building request that holds further settings, must not be {@code null}.
+     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
+     */
+    void injectDefaultValues( Model model, ModelBuildingRequest request, ModelProblemCollector problems );
+
+}