ExpressionX (zk 10.0.0 API)

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

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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.