org.milyn.expression

Interface ExecutionContextExpressionEvaluator

All Superinterfaces:

ExpressionEvaluator

All Known Implementing Classes:

BeanMapExpressionEvaluator

public interface ExecutionContextExpressionEvaluator
extends ExpressionEvaluator

ExecutionContext based expression evaluator.

Author:

tom.fennelly@gmail.com

Nested Class Summary

Nested classes/interfaces inherited from interface org.milyn.expression.ExpressionEvaluator

ExpressionEvaluator.Factory

Method Summary

Modifier and Type	Method and Description
boolean	eval(ExecutionContext context) Evaluate an expression based on the supplied ExecutionContext.
Object	getValue(ExecutionContext context) Evaluate an expression based on the supplied ExecutionContext and return the value.

Methods inherited from interface org.milyn.expression.ExpressionEvaluator

eval, getExpression, getValue, setExpression

Method Detail

eval

boolean eval(ExecutionContext context)
      throws ExpressionEvaluationException

Evaluate an expression based on the supplied ExecutionContext.

Parameters:

context - The context.

Returns:

True if the condition evaluates successfully, otherwise false.

Throws:

ExpressionEvaluationException - Invalid expression evaluation (implementation specific).

getValue

Object getValue(ExecutionContext context)
         throws ExpressionEvaluationException

Evaluate an expression based on the supplied ExecutionContext and return the value.

Parameters:

context - The context.

Returns:

Expression evaluation result.

Throws:

ExpressionEvaluationException - Invalid expression evaluation (implementation specific).