org.zkoss.xel

Interface ExpressionX

All Superinterfaces:

Expression

All Known Implementing Classes:

BindXelExpression, BindXelExpressionEx, ELXelExpression, PropertyExpression

public interface ExpressionX
extends Expression

An extension of Expression to have more control to handle Expression Language EL 2.2 specs.

With ExpressionX, you are allow to set value into property resolved by this expression.

Notice it is available only ZEL 2.2 is used. Please refer to Expressions.newExpressionFactory() for more information.

Since:

6.0.0

Author:

henri

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getExpressionString() Returns the expression in String form.
java.lang.Class	getType(XelContext xelc) Returns the result type of this expression.
ValueReference	getValueReference(XelContext xelc) Returns the target bean and field name of this expression.
boolean	isReadOnly(XelContext ctx) Returns whether this is a read only (cannot setValue) expression.
void	setValue(XelContext ctx, java.lang.Object value) Set values into the property resolved by this expression.

Methods inherited from interface org.zkoss.xel.Expression

evaluate

Method Detail

isReadOnly

boolean isReadOnly(XelContext ctx)
                   throws XelException

Returns whether this is a read only (cannot setValue) expression.

Parameters:

ctx - the evaluation context

Returns:

whether this is a read only (cannot setValue) expression.

Throws:

XelException

setValue

void setValue(XelContext ctx,
            java.lang.Object value)
              throws XelException

Set values into the property resolved by this expression.

Parameters:

ctx - the evaluation context

value - the value to be set into the property resolved by this expression

Throws:

XelException

getExpressionString

java.lang.String getExpressionString()

Returns the expression in String form.

Returns:

the expression in String form.

getType

java.lang.Class getType(XelContext xelc)

Returns the result type of this expression.

Parameters:

xelc - the evaluation context

Returns:

the result type of this expression.

getValueReference

ValueReference getValueReference(XelContext xelc)

Returns the target bean and field name of this expression.

Parameters:

xelc - the evaluation context

Returns:

the target bean and field name of this expression.