Package jakarta.servlet.jsp.el

Class NotFoundELResolver

java.lang.Object

jakarta.el.ELResolver

jakarta.servlet.jsp.el.NotFoundELResolver

public class NotFoundELResolver
extends ELResolver

The final resolver of the Jakarta Server Pages ELResolver chain. It always resolves the requested value, returning null when it does so.

Since:

JSP 3.1

Field Summary

Fields inherited from class jakarta.el.ELResolver

RESOLVABLE_AT_DESIGN_TIME, TYPE

Constructor Summary

Constructors

Constructor	Description
NotFoundELResolver()	Default constructor.

Method Summary

Modifier and Type	Method	Description
Class<String>	getCommonPropertyType(ELContext context, Object base)
Iterator<FeatureDescriptor>	getFeatureDescriptors(ELContext context, Object base)	Deprecated, for removal: This API element is subject to removal in a future version.
Class<Object>	getType(ELContext context, Object base, Object property)
Object	getValue(ELContext context, Object base, Object property)
boolean	isReadOnly(ELContext context, Object base, Object property)
void	setValue(ELContext context, Object base, Object property, Object value)

Methods inherited from class jakarta.el.ELResolver

convertToType, invoke

Methods inherited from class java.lang.Object

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

Constructor Details

NotFoundELResolver

public NotFoundELResolver()

Default constructor.

Method Details

getValue

public Object getValue(ELContext context,
 Object base,
 Object property)

Resolves the property and always returns null unless the provided context contains a Boolean object with value Boolean.TRUE as the value associated with the key jakarta.servlet.jsp.el.NotFoundELResolver.class in which case an exception is thrown. This is to support implementation of the errorOnELNotFound page/tag directive.

Specified by:

getValue in class ELResolver

Returns:

Always null

Throws:

PropertyNotFoundException - if the provided context contains a Boolean object with value Boolean.TRUE as the value associated with the key jakarta.servlet.jsp.el.NotFoundELResolver.class

getType

public Class<Object> getType(ELContext context,
 Object base,
 Object property)

In normal usage, ScopedAttributeELResolver will have responded.

Specified by:

getType in class ELResolver

Returns:

Always null

setValue

public void setValue(ELContext context,
 Object base,
 Object property,
 Object value)

No-op. In normal usage, ScopedAttributeELResolver will have responded.

Specified by:

setValue in class ELResolver

isReadOnly

public boolean isReadOnly(ELContext context,
 Object base,
 Object property)

In normal usage, ScopedAttributeELResolver will have responded.

Specified by:

isReadOnly in class ELResolver

Returns:

Always false

getFeatureDescriptors

@Deprecated(forRemoval=true,
            since="JSP 3.1")
public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context,
 Object base)

Deprecated, for removal: This API element is subject to removal in a future version.

Overrides:

getFeatureDescriptors in class ELResolver

getCommonPropertyType

public Class<String> getCommonPropertyType(ELContext context,
 Object base)

In normal usage, ScopedAttributeELResolver will have responded.

Specified by:

getCommonPropertyType in class ELResolver

Returns:

Always null