Package org.zkoss.bind.sys

Interface BindEvaluatorX

All Superinterfaces:
org.zkoss.zk.xel.Evaluator, Serializable
All Known Implementing Classes:
BindEvaluatorXImpl
public interface BindEvaluatorX extends org.zkoss.zk.xel.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

    Modifier and Type
    Method
    Description
    Class<?>
    getType(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression)
    Returns the result type of the specified expression.
    Object
    getValue(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression)
    Sets the specified value to the property resolved from the specified expression.
    org.zkoss.xel.ValueReference
    getValueReference(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression)
    Returns the result reference of the specified expression.
    boolean
    isReadOnly(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression)
    Returns whether the specified expression a read only expression.
    org.zkoss.xel.ExpressionX
    parseExpressionX(BindContext ctx, String expression, Class<?> expectedType)
    Prepares the expressionX.
    void
    setValue(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression, 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 Details

    • parseExpressionX

      org.zkoss.xel.ExpressionX parseExpressionX(BindContext ctx, String expression, Class<?> expectedType) throws org.zkoss.xel.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:
      org.zkoss.xel.XelException

    • setValue

      void setValue(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression, Object value) throws org.zkoss.xel.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:
      org.zkoss.xel.XelException

    • getValue

      Object getValue(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression) throws org.zkoss.xel.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:
      org.zkoss.xel.XelException

    • getType

      Class<?> getType(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression) throws org.zkoss.xel.XelException
      Returns the result type of the specified expression.
      Parameters:
      ctx - BindContext
      comp - evaluation context
      expression - the expression that will resolve a property
      Throws:
      org.zkoss.xel.XelException

    • getValueReference

      org.zkoss.xel.ValueReference getValueReference(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression) throws org.zkoss.xel.XelException
      Returns the result reference of the specified expression.
      Parameters:
      ctx - BindContext
      comp - evaluation context
      expression - the expression that will resolve a property
      Throws:
      org.zkoss.xel.XelException

    • isReadOnly

      boolean isReadOnly(BindContext ctx, org.zkoss.zk.ui.Component comp, org.zkoss.xel.ExpressionX expression) throws org.zkoss.xel.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:
      org.zkoss.xel.XelException