Package jakarta.servlet.jsp.el
Class NotFoundELResolver
- java.lang.Object
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- jakarta.el.ELResolver
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- jakarta.servlet.jsp.el.NotFoundELResolver
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public class NotFoundELResolver extends jakarta.el.ELResolver
The final resolver of the Jakarta Server Pages ELResolver chain. It always resolves the requested value, returningnull
when it does so.- Since:
- JSP 3.1
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Constructor Summary
Constructors Constructor Description NotFoundELResolver()
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description java.lang.Class<java.lang.String>
getCommonPropertyType(jakarta.el.ELContext context, java.lang.Object base)
Obtain the most common type that is acceptable for the given base object.java.util.Iterator<java.beans.FeatureDescriptor>
getFeatureDescriptors(jakarta.el.ELContext context, java.lang.Object base)
Deprecated, for removal: This API element is subject to removal in a future version.java.lang.Class<java.lang.Object>
getType(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property)
java.lang.Object
getValue(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property)
boolean
isReadOnly(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property)
void
setValue(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)
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Method Detail
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getValue
public java.lang.Object getValue(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property)
Resolves the property and always returns
null
unless the provided context contains a Boolean object with valueBoolean.TRUE
as the value associated with the keyjakarta.servlet.jsp.el.NotFoundELResolver.class
in which case an exception is thrown. This is to support implementation of theerrorOnELNotFound
page/tag directive.- Specified by:
getValue
in classjakarta.el.ELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the property is to be foundproperty
- The property whose value is to be returned- Returns:
- Always
null
- Throws:
jakarta.el.PropertyNotFoundException
- if the provided context contains a Boolean object with valueBoolean.TRUE
as the value associated with the keyjakarta.servlet.jsp.el.NotFoundELResolver.class
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getType
public java.lang.Class<java.lang.Object> getType(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property)
In normal usage,
ScopedAttributeELResolver
will have responded.- Specified by:
getType
in classjakarta.el.ELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the property is to be foundproperty
- The property whose type is to be returned- Returns:
- Always
null
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setValue
public void setValue(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)
No-op. In normal usage,
ScopedAttributeELResolver
will have responded.- Specified by:
setValue
in classjakarta.el.ELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the property is to be foundproperty
- The property whose value is to be setvalue
- The value to set the property to
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isReadOnly
public boolean isReadOnly(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property)
In normal usage,
ScopedAttributeELResolver
will have responded.- Specified by:
isReadOnly
in classjakarta.el.ELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the property is to be foundproperty
- The property to be checked for read only status- Returns:
- Always
false
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getFeatureDescriptors
@Deprecated(forRemoval=true, since="JSP 3.1") public java.util.Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors(jakarta.el.ELContext context, java.lang.Object base)
Deprecated, for removal: This API element is subject to removal in a future version.Description copied from class:jakarta.el.ELResolver
Obtain the feature descriptors for the resolvable properties of the given object.The default implementation returns
null
.- Overrides:
getFeatureDescriptors
in classjakarta.el.ELResolver
- Parameters:
context
- The context in which the examination takes placebase
- The object to examine- Returns:
- An iterator, possibly empty, of feature descriptors of the given object
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getCommonPropertyType
public java.lang.Class<java.lang.String> getCommonPropertyType(jakarta.el.ELContext context, java.lang.Object base)
Obtain the most common type that is acceptable for the given base object.In normal usage,
ScopedAttributeELResolver
will have responded.- Specified by:
getCommonPropertyType
in classjakarta.el.ELResolver
- Parameters:
context
- The context in which the examination takes placebase
- The object to examine- Returns:
- Always
null
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