ValueSuffix


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55  
56  package org.apache.commons.el;
57  
58  import javax.servlet.jsp.el.ELException  ;
59  import javax.servlet.jsp.el.VariableResolver  ;
60  import javax.servlet.jsp.el.FunctionMapper  ;
61  
62  /**
63   *
64   * <p>Represents an element that can appear as a suffix in a complex
65   * value, such as a property or index operator, or a method call (should
66   * they ever need to be supported).
67   * 
68   * @author Nathan Abramson - Art Technology Group
69   * @author Shawn Bayern
70   * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
71   **/
72  
73  public abstract class ValueSuffix
74  {
75    //-------------------------------------
76    /**
77     *
78     * Returns the expression in the expression language syntax
79     **/
80    public abstract String   getExpressionString ();
81  
82    //-------------------------------------
83    /**
84     *
85     * Evaluates the expression in the given context, operating on the
86     * given value.
87     **/
88    public abstract Object   evaluate (Object   pValue,
89                     VariableResolver   pResolver,
90                     FunctionMapper   functions,
91                     Logger pLogger)
92      throws ELException  ;
93  
94    //-------------------------------------
95  }
96
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