org.zkoss.bind.sys
Interface BindEvaluatorX

All Superinterfaces:
Evaluator, java.io.Serializable
All Known Implementing Classes:
BindEvaluatorXImpl

public interface BindEvaluatorX
extends Evaluator

An extension of Evaluator to have more control to handle Binding via EL.

With BindEvaluatorX, you are allow to parse a Method expression or set value into property resolved by the provided expression.

Since:
6.0.0
Author:
henrichen

Method Summary
 java.lang.Class<?> getType(BindContext ctx, Component comp, ExpressionX expression)
          Returns the result type of the specified expression.
 java.lang.Object getValue(BindContext ctx, Component comp, ExpressionX expression)
          Sets the specified value to the property resolved from the specified expression.
 ValueReference getValueReference(BindContext ctx, Component comp, ExpressionX expression)
          Returns the result reference of the specified expression.
 boolean isReadOnly(BindContext ctx, Component comp, ExpressionX expression)
          Returns whether the specified expression a read only expression.
 ExpressionX parseExpressionX(BindContext ctx, java.lang.String expression, java.lang.Class<?> expectedType)
          Prepares the expressionX.
 void setValue(BindContext ctx, Component comp, ExpressionX expression, java.lang.Object value)
          Sets the specified value to the property resolved from the specified expression.
 
Methods inherited from interface org.zkoss.zk.xel.Evaluator
evaluate, evaluate, parseExpression
 

Method Detail

parseExpressionX

ExpressionX parseExpressionX(BindContext ctx,
                             java.lang.String expression,
                             java.lang.Class<?> expectedType)
                             throws XelException
Prepares the expressionX.

Parameters:
expression - the expression to be prepared for being evaluated later.
expectedType - the expected type of the result of the evaluation
Throws:
XelException

setValue

void setValue(BindContext ctx,
              Component comp,
              ExpressionX expression,
              java.lang.Object value)
              throws XelException
Sets the specified value to the property resolved from the specified expression.

Parameters:
ctx - the scoped bind context of this operation
comp - the scoped component context of this operation
expression - the expression that will resolve a property
value - the value to be set into the resolved property
Throws:
XelException

getValue

java.lang.Object getValue(BindContext ctx,
                          Component comp,
                          ExpressionX expression)
                          throws XelException
Sets the specified value to the property resolved from the specified expression.

Parameters:
ctx - the scoped bind context of this operation
comp - the scoped component context of this operation
expression - the expression that will resolve a property
Throws:
XelException

getType

java.lang.Class<?> getType(BindContext ctx,
                           Component comp,
                           ExpressionX expression)
                           throws XelException
Returns the result type of the specified expression.

Parameters:
ctx - BindContext
comp - evaluation context
expression - the expression that will resolve a property
Throws:
XelException

getValueReference

ValueReference getValueReference(BindContext ctx,
                                 Component comp,
                                 ExpressionX expression)
                                 throws XelException
Returns the result reference of the specified expression.

Parameters:
ctx - BindContext
comp - evaluation context
expression - the expression that will resolve a property
Throws:
XelException

isReadOnly

boolean isReadOnly(BindContext ctx,
                   Component comp,
                   ExpressionX expression)
                   throws XelException
Returns whether the specified expression a read only expression.

Parameters:
ctx - BindContext
comp - evaluation context
expression - the expression that will resolve a property
Returns:
whether the specified expression a read only expression.
Throws:
XelException


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