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1   package org.eclipse.aether.resolution;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   * 
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   * 
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.eclipse.aether.RepositorySystemSession;
23  
24  /**
25   * Controls the handling of errors related to reading an artifact descriptor.
26   * 
27   * @see RepositorySystemSession#getArtifactDescriptorPolicy()
28   */
29  public interface ArtifactDescriptorPolicy
30  {
31  
32      /**
33       * Bit mask indicating that errors while reading the artifact descriptor should not be tolerated.
34       */
35      int STRICT = 0x00;
36  
37      /**
38       * Bit flag indicating that missing artifact descriptors should be silently ignored.
39       */
40      int IGNORE_MISSING = 0x01;
41  
42      /**
43       * Bit flag indicating that existent but invalid artifact descriptors should be silently ignored.
44       */
45      int IGNORE_INVALID = 0x02;
46  
47      /**
48       * Bit mask indicating that all errors should be silently ignored.
49       */
50      int IGNORE_ERRORS = IGNORE_MISSING | IGNORE_INVALID;
51  
52      /**
53       * Gets the error policy for an artifact's descriptor.
54       * 
55       * @param session The repository session during which the policy is determined, must not be {@code null}.
56       * @param request The policy request holding further details, must not be {@code null}.
57       * @return The bit mask describing the desired error policy.
58       */
59      int getPolicy( RepositorySystemSession session, ArtifactDescriptorPolicyRequest request );
60  
61  }