org.zkoss.xel
Interface ExpressionX

All Superinterfaces:
Expression
All Known Implementing Classes:
BindXelExpression, ELXelExpression

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
 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.


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