- package org.apache.commons.jexl;
-
- /**
- * A Resolver allows custom resolution of the expression, and can be
- * added in front of the jexl engine, or after in the evaluation
- *
- * @todo This needs to be explained in detail. Why do this?
- * @author <a href="mailto:geirm@adeptra.com">Geir Magnusson Jr.</a>
- * @version $Id: JexlExprResolver.java,v 1.3 2004/08/23 13:53:34 dion Exp $
- */
- public interface JexlExprResolver
- {
- Object NO_VALUE = new Object();
-
- /**
- * evaluates an expression against the context
- *
- * @todo Must detail the expectations and effects of this resolver.
- * @param context current data context
- * @param expression expression to evauluate
- * @return value (may be null) po the NO_VALUE object to
- * indicate no resolution.
- */
- Object evaluate(JexlContext context, String expression);
- }