SymbolSource


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;
16  
17  /**
18   * Used to define an object that can provide a value for a substitution symbol
19   * (substitution symbol can appear in HiveMind module deployment descriptors).
20   *
21   * @author Howard Lewis Ship
22   */
23  
24  public interface SymbolSource
25  {
26      /**
27       * Returns the value for the symbol, if this source can provide one.
28       * Returns null if the source can not provide a value.
29       */
30      public String   valueForSymbol(String   name);
31  }
32

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