Package jakarta.el
Class CompositeELResolver
java.lang.Object
jakarta.el.ELResolver
jakarta.el.CompositeELResolver
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Field Summary
Fields inherited from class jakarta.el.ELResolver
RESOLVABLE_AT_DESIGN_TIME, TYPE
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
add
(ELResolver elResolver) <T> T
convertToType
(ELContext context, Object obj, Class<T> type) Converts the given object to the given type.Class<?>
getCommonPropertyType
(ELContext context, Object base) Obtain the most common type that is acceptable for the given base object.Class<?>
Obtain the type of the given property on the given object using the given context.Obtain the value of the given property on the given object using the given context.Invokes a method on the the given object.boolean
isReadOnly
(ELContext context, Object base, Object property) Determine if the given property on the given object is read-only using the given context.void
Set the value of the given property on the given object using the given context.
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Constructor Details
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CompositeELResolver
public CompositeELResolver()
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Method Details
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add
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getValue
Description copied from class:ELResolver
Obtain the value of the given property on the given object using the given context.- Specified by:
getValue
in classELResolver
- 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:
- the value of the provided property
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invoke
public Object invoke(ELContext context, Object base, Object method, Class<?>[] paramTypes, Object[] params) Description copied from class:ELResolver
Invokes a method on the the given object. This default implementation always returnsnull
.- Overrides:
invoke
in classELResolver
- Parameters:
context
- The EL context for this evaluationbase
- The base object on which the method is to be foundmethod
- The method to invokeparamTypes
- The types of the parameters of the method to invokeparams
- The parameters with which to invoke the method- Returns:
- Always
null
- Since:
- EL 2.2
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getType
Description copied from class:ELResolver
Obtain the type of the given property on the given object using the given context.- Specified by:
getType
in classELResolver
- 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:
- the type of the provided property
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setValue
Description copied from class:ELResolver
Set the value of the given property on the given object using the given context.- Specified by:
setValue
in classELResolver
- 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
Description copied from class:ELResolver
Determine if the given property on the given object is read-only using the given context.- Specified by:
isReadOnly
in classELResolver
- 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:
true
if the identified property is read only, otherwisefalse
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getCommonPropertyType
Description copied from class:ELResolver
Obtain the most common type that is acceptable for the given base object.- Specified by:
getCommonPropertyType
in classELResolver
- Parameters:
context
- The context in which the examination takes placebase
- The object to examine- Returns:
- {code null} if the most common type cannot be determine, otherwise the most common type
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convertToType
Description copied from class:ELResolver
Converts the given object to the given type. This default implementation always returnsnull
.- Overrides:
convertToType
in classELResolver
- Type Parameters:
T
- The type to which the object should be converted- Parameters:
context
- The EL context for this evaluationobj
- The object to converttype
- The type to which the object should be converted- Returns:
- Always
null
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