1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.model.normalization;
20
21 import org.apache.maven.model.Model;
22 import org.apache.maven.model.building.ModelBuildingRequest;
23 import org.apache.maven.model.building.ModelProblemCollector;
24
25 /**
26 * Handles normalization of a model. In this context, normalization is the process of producing a canonical
27 * representation for models that physically look different but are semantically equivalent.
28 *
29 * @author Benjamin Bentmann
30 */
31 public interface ModelNormalizer {
32
33 /**
34 * Merges duplicate elements like multiple declarations of the same build plugin in the specified model.
35 *
36 * @param model The model whose duplicate elements should be merged, must not be {@code null}.
37 * @param request The model building request that holds further settings, must not be {@code null}.
38 * @param problems The container used to collect problems that were encountered, must not be {@code null}.
39 */
40 void mergeDuplicates(Model model, ModelBuildingRequest request, ModelProblemCollector problems);
41
42 /**
43 * Sets default values in the specified model that for technical reasons cannot be set directly in the Modello
44 * definition.
45 *
46 * @param model The model in which to set the default values, must not be {@code null}.
47 * @param request The model building request that holds further settings, must not be {@code null}.
48 * @param problems The container used to collect problems that were encountered, must not be {@code null}.
49 */
50 void injectDefaultValues(Model model, ModelBuildingRequest request, ModelProblemCollector problems);
51 }