de.hybris.platform.print.util.expression

Interface ExpressionEvaluator

All Known Implementing Classes:

JexlExpressionEvaluator

public interface ExpressionEvaluator

The expression evaluator is used to translate expressions written in expression language.

Method Summary

Modifier and Type	Method and Description
ExpressionContext	createContext() Creates and returns the expression context in which you can set variables which will be used during evaluation.
String	displayVariable(String variable) Returns given variable in the syntax of the expression language (like $product) for display purposes.
Object	evaluate(String expression, ExpressionContext context) Evaluates given expression using given expression context.

Method Detail

createContext

ExpressionContext createContext()

Creates and returns the expression context in which you can set variables which will be used during evaluation.

Returns:

the expression context

evaluate

Object evaluate(String expression,
                ExpressionContext context)
         throws ExpressionEvaluationException

Evaluates given expression using given expression context.

Parameters:

expression - the expression to evaluate

context - the expression context to be used during evaluation

Returns:

result of the evaluation

Throws:

ExpressionEvaluationException

displayVariable

String displayVariable(String variable)

Returns given variable in the syntax of the expression language (like $product) for display purposes.

Parameters:

variable -

Returns:

the variable in the syntax of the expression language