ExpressionCache


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  /**
18   * Cache of compiled OGNL expressions.
19   * 
20   * @author Howard M. Lewis Ship
21   * @since 4.0
22   */
23  public interface ExpressionCache
24  {
25      /**
26       * Returns the compiled form of the OGNL expression. 
27       * 
28       * @throws org.apache.hivemind.ApplicationRuntimeException if the expression is not valid
29       */
30      public Object   getCompiledExpression(String   expression);
31  }

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