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## org.apache.commons.jexl
Interface JexlExprResolver

All Known Implementing Classes:
  FlatResolver

public interface JexlExprResolver

A Resolver allows custom resolution of the expression, and can be added in front of the jexl engine, or after in the evaluation.

Since:
  1.0
Version:
  $Id: JexlExprResolver.java 397092 2006-04-26 05:11:28Z dion $

Field Summary
`static Object` | `NO_VALUE` represents an expression result of no value.

Method Summary
`Object` | `evaluate(JexlContext context, String expression)` Evaluates an expression against the context.

Field Detail

### NO_VALUE

    public static final Object NO_VALUE

  represents an expression result of no value.

Method Detail

### evaluate

    public Object evaluate(JexlContext context,
                           String expression)

  Evaluates an expression against the context.
  Parameters:
    `context` - current data context
    `expression` - expression to evauluate
  Returns:
    value (may be null) or the NO_VALUE object to indicate no resolution.

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