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.inheritance;
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 inheritance of model values.
27 *
28 * @author Benjamin Bentmann
29 */
30 public interface InheritanceAssembler {
31
32 /**
33 * Merges values from the specified parent model into the given child model. Implementations are expected to keep
34 * parent and child completely decoupled by injecting deep copies of objects into the child rather than the original
35 * objects from the parent.
36 *
37 * @param child The child model into which to merge the values inherited from the parent, must not be
38 * <code>null</code>.
39 * @param parent The (read-only) parent model from which to inherit the values, may be <code>null</code>.
40 * @param request The model building request that holds further settings, must not be {@code null}.
41 * @param problems The container used to collect problems that were encountered, must not be {@code null}.
42 */
43 void assembleModelInheritance(
44 Model child, Model parent, ModelBuildingRequest request, ModelProblemCollector problems);
45 }