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.interpolation;
20
21 import java.io.File;
22
23 import org.apache.maven.model.Model;
24 import org.apache.maven.model.building.ModelBuildingRequest;
25 import org.apache.maven.model.building.ModelProblemCollector;
26
27 /**
28 * Replaces expressions of the form <code>${token}</code> with their effective values. Effective values are basically
29 * calculated from the elements of the model itself and the execution properties from the building request.
30 *
31 * @author jdcasey
32 */
33 public interface ModelInterpolator {
34
35 /**
36 * Property key that may contain default Maven repository URL.
37 * This key is used in super POM.
38 *
39 * @since 3.10.0
40 */
41 String MAVEN_REPO_CENTRAL_KEY = "maven.repo.central";
42
43 /**
44 * Default value of Maven repository Central URL.
45 *
46 * @since 3.10.0
47 */
48 String DEFAULT_MAVEN_REPO_CENTRAL_URL = "https://repo.maven.apache.org/maven2";
49
50 /**
51 * Interpolates expressions in the specified model. Note that implementations are free to either interpolate the
52 * provided model directly or to create a clone of the model and interpolate the clone. Callers should always use
53 * the returned model and must not rely on the input model being updated.
54 *
55 * @param model The model to interpolate, must not be {@code null}.
56 * @param projectDir The project directory, may be {@code null} if the model does not belong to a local project but
57 * to some artifact's metadata.
58 * @param request The model building request that holds further settings, must not be {@code null}.
59 * @param problems The container used to collect problems that were encountered, must not be {@code null}.
60 * @return The interpolated model, never {@code null}.
61 */
62 Model interpolateModel(Model model, File projectDir, ModelBuildingRequest request, ModelProblemCollector problems);
63 }