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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.myfaces.view.facelets;
20  
21  public enum ELExpressionCacheMode
22  {
23      /**
24       * Does not cache expressions.
25       */
26      noCache,
27      
28      /**
29       * Does not cache expressions on these cases:
30       * - A c:set tag with only var and value properties was used on the current page.
31       * - ui:param was used on the current template context
32       * - Inside user tags
33       * - An expression uses a variable resolved through VariableMapper
34       */
35      strict,
36  
37      /**
38       * Does not cache expressions on these cases:
39       * - ui:param was used on the current template context
40       * - Inside user tags
41       * - An expression uses a variable resolved through VariableMapper
42       * 
43       * In this case, c:set is assumed to be always on the parent node.
44       */
45      allowCset,
46      
47      /**
48       * Does not cache expressions on these cases:
49       * - Inside user tags
50       * - An expression uses a variable resolved through VariableMapper
51       * 
52       * Note if ui:param is used, each template call should define the same
53       * param count, even if only just a few are used. 
54       */
55      always
56  }