org.springframework.binding.expression
Interface Expression

All Known Subinterfaces:

SettableExpression

All Known Implementing Classes:

CollectionAddingExpression, CompositeStringExpression, StaticExpression

public interface Expression

Evaluates a single parsed expression on the provided input object in the specified context. This provides a common abstraction for expression evaluation independent of any language like OGNL or Spring's BeanWrapper.

Author:

Keith Donald

Method Summary

java.lang.Object

evaluate(java.lang.Object target, EvaluationContext context) Evaluate the expression encapsulated by this evaluator against the provided target object and return the result of the evaluation.

Method Detail

evaluate

java.lang.Object evaluate(java.lang.Object target,
                          EvaluationContext context)
                          throws EvaluationException

Evaluate the expression encapsulated by this evaluator against the provided target object and return the result of the evaluation.

Parameters:

target - the target of the expression

context - the expression evaluation context

Returns:

the evaluation result

Throws:

EvaluationException - an exception occured during evaluation