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1   package org.codehaus.modello.metadata;
2   
3   /*
4    * Copyright (c) 2004, Codehaus.org
5    *
6    * Permission is hereby granted, free of charge, to any person obtaining a copy of
7    * this software and associated documentation files (the "Software"), to deal in
8    * the Software without restriction, including without limitation the rights to
9    * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10   * of the Software, and to permit persons to whom the Software is furnished to do
11   * so, subject to the following conditions:
12   *
13   * The above copyright notice and this permission notice shall be included in all
14   * copies or substantial portions of the Software.
15   *
16   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22   * SOFTWARE.
23   */
24  
25  import java.util.Map;
26  
27  import org.codehaus.plexus.util.StringUtils;
28  import org.slf4j.Logger;
29  import org.slf4j.LoggerFactory;
30  
31  /**
32   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
33   */
34  public abstract class AbstractMetadataPlugin implements MetadataPlugin {
35      private final Logger logger = LoggerFactory.getLogger(getClass());
36  
37      protected Logger getLogger() {
38          return logger;
39      }
40  
41      protected boolean getBoolean(Map<String, String> data, String key, boolean defaultValue) {
42          String value = data.get(key);
43  
44          if (StringUtils.isEmpty(value)) {
45              return defaultValue;
46          }
47  
48          return Boolean.valueOf(value).booleanValue();
49      }
50  
51      protected String getString(Map<String, String> data, String key) {
52          String value = data.get(key);
53  
54          return StringUtils.isEmpty(value) ? null : value;
55      }
56  }