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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.locator;
20  
21  import java.io.File;
22  import java.nio.file.Path;
23  
24  /**
25   * Locates a POM file within a project base directory.
26   *
27   */
28  public interface ModelLocator {
29  
30      /**
31       * Locates the POM file within the specified project directory. In case the given project directory does not exist
32       * or does not contain a POM file, the return value indicates the expected path to the POM file. Subdirectories of
33       * the project directory will not be considered when locating the POM file. The return value will be an absolute
34       * path if the project directory is given as an absolute path.
35       *
36       * @param projectDirectory The (possibly non-existent) base directory to locate the POM file in, must not be {@code
37       *            null}.
38       * @return The path to the (possibly non-existent) POM file, never {@code null}.
39       * @deprecated Use {@link #locatePom(Path)} instead.
40       */
41      @Deprecated
42      File locatePom(File projectDirectory);
43  
44      /**
45       * Locates the POM file within the specified project directory. In case the given project directory does not exist
46       * or does not contain a POM file, the return value indicates the expected path to the POM file. Subdirectories of
47       * the project directory will not be considered when locating the POM file. The return value will be an absolute
48       * path if the project directory is given as an absolute path.
49       *
50       * @param projectDirectory The (possibly non-existent) base directory to locate the POM file in, must not be {@code
51       *            null}.
52       * @return The path to the (possibly non-existent) POM file, never {@code null}.
53       * @since 4.0.0
54       */
55      Path locatePom(Path projectDirectory);
56  
57      /**
58       * Returns the file containing the pom or null if a pom can not be found at the given file or in the given directory.
59       *
60       * @deprecated Use {@link #locateExistingPom(Path)} instead.
61       */
62      @Deprecated
63      default File locateExistingPom(File project) {
64          Path path = locateExistingPom(project != null ? project.toPath() : null);
65          return path != null ? path.toFile() : null;
66      }
67  
68      /**
69       * Returns the file containing the pom or null if a pom can not be found at the given file or in the given directory.
70       *
71       * @since 4.0.0
72       */
73      Path locateExistingPom(Path project);
74  }