Package jakarta.el
Class CompositeELResolver
java.lang.Object
jakarta.el.ELResolver
jakarta.el.CompositeELResolver
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Constructor Summary
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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 most generally acceptable type that may be used to set 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.- 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:
- This default implementation always returns
null
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getType
Description copied from class:ELResolver
Obtain the most generally acceptable type that may be used to set 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 most general type that maybe used to set the provided property or
null
if the resolver is read-only.
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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.- 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:
- This default implementation always returns
null
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