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1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.tika.parser;
18  
19  import java.util.HashMap;
20  import java.util.Map;
21  
22  /**
23   * Parse context. Used to pass context information to Tika parsers.
24   *
25   * @since Apache Tika 0.5
26   * @see <a href="https://issues.apache.org/jira/browse/TIKA-275">TIKA-275</a>
27   */
28  public class ParseContext {
29  
30      private final Map<Class<?>, Object> context =
31          new HashMap<Class<?>, Object>();
32   
33      public <T> void set(Class<T> key, T value) {
34          context.put(key, value);
35      }
36  
37      @SuppressWarnings("unchecked")
38      public <T> T get(Class<T> key) {
39          return (T) context.get(key);
40      }
41  
42      public <T> T get(Class<T> key, T defaultValue) {
43          T value = get(key);
44          if (value != null) {
45              return value;
46          } else {
47              return defaultValue;
48          }
49      }
50  
51  }