Package org.zkoss.bind.xel.zel

Class DynamicPropertiedELResolver

java.lang.Object

org.zkoss.zel.ELResolver

org.zkoss.zel.BeanELResolver

org.zkoss.bind.xel.zel.DynamicPropertiedELResolver

public class DynamicPropertiedELResolver
extends BeanELResolver

A resolver to resolve value base on BeanELResolver and DynamicPropertied. It only handle evaluation when a base object's type is DynamicPropertied

Since:

6.5.1

Author:

dennis

Field Summary

Fields inherited from class org.zkoss.zel.ELResolver

RESOLVABLE_AT_DESIGN_TIME, TYPE

Constructor Summary

Constructors

Constructor	Description
DynamicPropertiedELResolver()

Method Summary

Modifier and Type	Method	Description
java.lang.Class<?>	getCommonPropertyType(ELContext context, java.lang.Object base)
java.util.Iterator<java.beans.FeatureDescriptor>	getFeatureDescriptors(ELContext context, java.lang.Object base)
java.lang.Class<?>	getType(ELContext context, java.lang.Object base, java.lang.Object property)
java.lang.Object	getValue(ELContext context, java.lang.Object base, java.lang.Object property)
java.lang.Object	invoke(ELContext context, 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 context, java.lang.Object base, java.lang.Object property)
void	setValue(ELContext context, 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

Constructor Detail

DynamicPropertiedELResolver

public DynamicPropertiedELResolver()

Method Detail

getValue

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

Overrides:

getValue in class BeanELResolver

Parameters:

context - 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:

java.lang.NullPointerException - If the supplied context is null

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

getType

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

Overrides:

getType in class BeanELResolver

Parameters:

context - 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:

java.lang.NullPointerException - If the supplied context is null

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 context,
                     java.lang.Object base,
                     java.lang.Object property,
                     java.lang.Object value)
              throws java.lang.NullPointerException,
                     PropertyNotFoundException,
                     PropertyNotWritableException,
                     ELException

Overrides:

setValue in class BeanELResolver

Parameters:

context - 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:

java.lang.NullPointerException - If the supplied context is null

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 context,
                          java.lang.Object base,
                          java.lang.Object property)
                   throws java.lang.NullPointerException,
                          PropertyNotFoundException,
                          ELException

Overrides:

isReadOnly in class BeanELResolver

Parameters:

context - 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:

java.lang.NullPointerException - If the supplied context is null

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 context,
                                                                              java.lang.Object base)

Overrides:

getFeatureDescriptors in class BeanELResolver

getCommonPropertyType

public java.lang.Class<?> getCommonPropertyType(ELContext context,
                                                java.lang.Object base)

Overrides:

getCommonPropertyType in class BeanELResolver

invoke

public java.lang.Object invoke(ELContext context,
                               java.lang.Object base,
                               java.lang.Object method,
                               java.lang.Class<?>[] paramTypes,
                               java.lang.Object[] params)

Description copied from class: ELResolver

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

Overrides:

invoke in class BeanELResolver

Parameters:

context - 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