org.zkoss.xel.zel
Class XelELResolver

java.lang.Object
  org.zkoss.zel.ELResolver
      org.zkoss.xel.zel.XelELResolver

Direct Known Subclasses:

BindELResolver

public class XelELResolver
extends ELResolver

An XEL implementation of ZEL ELResolver.

Since:

6.0.0

Nested Class Summary

protected static class

XelELResolver.StandardBeanNameResolver It's a class copied from StandardELContext

Field Summary

protected XelContext

_ctx

Fields inherited from class org.zkoss.zel.ELResolver

RESOLVABLE_AT_DESIGN_TIME, TYPE

Constructor Summary

XelELResolver(XelContext ctx)
Constructor.

Method Summary

java.lang.Class	getCommonPropertyType(ELContext ctx, java.lang.Object base)
protected ELResolver	getELResolver()
java.util.Iterator<java.beans.FeatureDescriptor>	getFeatureDescriptors(ELContext ctx, java.lang.Object base)
java.lang.Class<?>	getType(ELContext ctx, java.lang.Object base, java.lang.Object property)
java.lang.Object	getValue(ELContext ctx, java.lang.Object base, java.lang.Object property)
protected XelContext	getXelContext()
java.lang.Object	invoke(ELContext ctx, java.lang.Object base, java.lang.Object method, java.lang.Class[] paramTypes, java.lang.Object[] params) Invokes a method on the the given object.
boolean	isReadOnly(ELContext ctx, java.lang.Object base, java.lang.Object property)
protected java.lang.Object	resolve(ELContext ctx, java.lang.Object base, java.lang.Object property)
void	setValue(ELContext ctx, java.lang.Object base, java.lang.Object property, java.lang.Object value)

Methods inherited from class org.zkoss.zel.ELResolver

convertToType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_ctx

protected final XelContext _ctx

Constructor Detail

XelELResolver

public XelELResolver(XelContext ctx)

Constructor.

Method Detail

getELResolver

protected ELResolver getELResolver()

getXelContext

protected XelContext getXelContext()

getValue

public java.lang.Object getValue(ELContext ctx,
                                 java.lang.Object base,
                                 java.lang.Object property)
                          throws PropertyNotFoundException,
                                 ELException

Specified by:

getValue in class ELResolver

Parameters:

ctx - The EL context for this evaluation

base - The base object on which the property is to be found

property - The property whose value is to be returned

Returns:

the value of the provided property

Throws:

PropertyNotFoundException - If the base/property combination provided to the resolver is one that the resolver can handle but no match was found or a match was found but was not readable

ELException - Wraps any exception throw whilst resolving the property

resolve

protected java.lang.Object resolve(ELContext ctx,
                                   java.lang.Object base,
                                   java.lang.Object property)

getType

public java.lang.Class<?> getType(ELContext ctx,
                                  java.lang.Object base,
                                  java.lang.Object property)
                           throws PropertyNotFoundException,
                                  ELException

Specified by:

getType in class ELResolver

Parameters:

ctx - The EL context for this evaluation

base - The base object on which the property is to be found

property - The property whose type is to be returned

Returns:

the type of the provided property

Throws:

PropertyNotFoundException - If the base/property combination provided to the resolver is one that the resolver can handle but no match was found or a match was found but was not readable

ELException - Wraps any exception throw whilst resolving the property

setValue

public void setValue(ELContext ctx,
                     java.lang.Object base,
                     java.lang.Object property,
                     java.lang.Object value)
              throws PropertyNotFoundException,
                     PropertyNotWritableException,
                     ELException

Specified by:

setValue in class ELResolver

Parameters:

ctx - The EL context for this evaluation

base - The base object on which the property is to be found

property - The property whose value is to be set

value - The value to set the property to

Throws:

PropertyNotFoundException - If the base/property combination provided to the resolver is one that the resolver can handle but no match was found

PropertyNotWritableException - If the base/property combination provided to the resolver is one that the resolver can handle but the property was not writable

ELException - Wraps any exception throw whilst resolving the property

isReadOnly

public boolean isReadOnly(ELContext ctx,
                          java.lang.Object base,
                          java.lang.Object property)
                   throws PropertyNotFoundException,
                          ELException

Specified by:

isReadOnly in class ELResolver

Parameters:

ctx - The EL context for this evaluation

base - The base object on which the property is to be found

property - The property to be checked for read only status

Returns:

true if the identified property is read only, otherwise false

Throws:

PropertyNotFoundException - If the base/property combination provided to the resolver is one that the resolver can handle but no match was found

ELException - Wraps any exception throw whilst resolving the property

getFeatureDescriptors

public java.util.Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors(ELContext ctx,
                                                                              java.lang.Object base)

Specified by:

getFeatureDescriptors in class ELResolver

getCommonPropertyType

public java.lang.Class getCommonPropertyType(ELContext ctx,
                                             java.lang.Object base)

Specified by:

getCommonPropertyType in class ELResolver

invoke

public java.lang.Object invoke(ELContext ctx,
                               java.lang.Object base,
                               java.lang.Object method,
                               java.lang.Class[] paramTypes,
                               java.lang.Object[] params)
                        throws MethodNotFoundException

Description copied from class: ELResolver

Invokes a method on the the given object. This default implementation always returns null.

Overrides:

invoke in class ELResolver

Parameters:

ctx - The EL context for this evaluation

base - The base object on which the method is to be found

method - The method to invoke

paramTypes - The types of the parameters of the method to invoke

params - The parameters with which to invoke the method

Returns:

Always null

Throws:

MethodNotFoundException