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()
Default constructor.
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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)
Obtain the most generally acceptable type that may be used to set the given property on the given object using the given context.java.lang.Object
getValue(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property)
Obtain the value of the given property on the given object using the given context.boolean
isReadOnly(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property)
Determine if the given property on the given object is read-only using the given context.void
setValue(jakarta.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)
Set the value of the given property on the given object using the given context.
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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)
Obtain the value of the given property on the given object using the given context.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)
Obtain the most generally acceptable type that may be used to set the given property on the given object using the given context.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)
Set the value of the given property on the given object using the given context.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)
Determine if the given property on the given object is read-only using the given context.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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