InjectedValueProvider


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.tapestry.services;
16  
17  import org.apache.hivemind.Location;
18  
19  /**
20   * @author Howard M. Lewis Ship
21   * @since 4.0
22   */
23  public interface InjectedValueProvider
24  {
25      /**
26       * Looks up a value in HiveMind using the object reference (as with HiveMind's built-in object
27       * translator). The module will always be the Tapestry module (which means that most service ids
28       * or configurations will have to be fully qualified.
29       * 
30       * @param objectReference
31       *            the reference to the HiveMind object to obtain, with a leading prefix indicating
32       *            type (i.e., "service:", "configuration:", etc.
33       * @param location
34       *            the location of the value, used if an error must be reported.
35       * @return the value
36       */
37  
38      public Object   obtainValue(String   objectReference, Location location);
39  }

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