SystemPropertiesSymbolSource


1   // Copyright 2004, 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.hivemind.impl;
16  
17  import org.apache.hivemind.SymbolSource;
18  
19  /**
20   * Implementation of {@link org.apache.hivemind.SymbolSource} that
21   * accesses {@link java.lang.System#getProperty(java.lang.String)}.
22   *
23   * @author Howard Lewis Ship
24   */
25  public class SystemPropertiesSymbolSource implements SymbolSource
26  {
27  
28      /**
29       * Returns the value for the named system property, or null
30       * if no such system property exists.
31       */
32      public String   valueForSymbol(String   name)
33      {
34          return System.getProperty(name);
35      }
36  
37  }
38

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