Class GenericsResolverImpl
java.lang.Object
org.apache.tapestry5.commons.internal.services.GenericsResolverImpl
- All Implemented Interfaces:
GenericsResolver
Implementation copied from Tapestry 5.4's GenericUtils (commons package).
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Nested Class Summary
Nested classes/interfaces inherited from interface org.apache.tapestry5.commons.services.GenericsResolver
GenericsResolver.Provider
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionGet the class represented by the reflected type.extractActualType
(Type containingType, Field field) Analyzes the method in the context of containingClass and returns the Class that is represented by the method's generic return type.extractActualType
(Type containingType, Method method) Analyzes the method in the context of containingClass and returns the Class that is represented by the method's generic return type.extractGenericFieldType
(Class containingClass, Field field) Analyzes the field in the context of containingClass and returns the Class that is represented by the field's generic type.Class<?>
extractGenericReturnType
(Class<?> containingClass, Method method) Analyzes the method in the context of containingClass and returns the Class that is represented by the method's generic return type.Resolves the type parameter based on the context of the containingType.static String
Convert the type into a string.
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Constructor Details
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GenericsResolverImpl
public GenericsResolverImpl()
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Method Details
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extractGenericReturnType
Analyzes the method in the context of containingClass and returns the Class that is represented by the method's generic return type. Any parameter information in the generic return type is lost. If you want to preserve the type parameters of the return type consider usingextractActualType(java.lang.reflect.Type, java.lang.reflect.Method)
.- Specified by:
extractGenericReturnType
in interfaceGenericsResolver
- Parameters:
containingClass
- class which either contains or inherited the methodmethod
- method from which to extract the return type- Returns:
- the class represented by the methods generic return type, resolved based on the context .
- See Also:
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extractGenericFieldType
Analyzes the field in the context of containingClass and returns the Class that is represented by the field's generic type. Any parameter information in the generic type is lost, if you want to preserve the type parameters of the return type consider usinggetTypeVariableIndex(java.lang.reflect.TypeVariable)
.- Specified by:
extractGenericFieldType
in interfaceGenericsResolver
- Parameters:
containingClass
- class which either contains or inherited the fieldfield
- field from which to extract the type- Returns:
- the class represented by the field's generic type, resolved based on the containingClass.
- See Also:
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extractActualType
Analyzes the method in the context of containingClass and returns the Class that is represented by the method's generic return type. Any parameter information in the generic return type is lost.- Specified by:
extractActualType
in interfaceGenericsResolver
- Parameters:
containingType
- Type which is/represents the class that either contains or inherited the methodmethod
- method from which to extract the generic return type- Returns:
- the generic type represented by the methods generic return type, resolved based on the containingType.
- See Also:
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extractActualType
Analyzes the method in the context of containingClass and returns the Class that is represented by the method's generic return type. Any parameter information in the generic return type is lost.- Specified by:
extractActualType
in interfaceGenericsResolver
- Parameters:
containingType
- Type which is/represents the class that either contains or inherited the fieldfield
- field from which to extract the generic return type- Returns:
- the generic type represented by the methods generic return type, resolved based on the containingType.
- See Also:
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resolve
Resolves the type parameter based on the context of the containingType.TypeVariable
will be unwrapped to the type argument resolved form the class hierarchy. This may be something other than a simple Class if the type argument is a ParameterizedType for instance (e.g.List<E>; List<Map<Long, String>>
, E would be returned as a ParameterizedType with the raw type Map and type arguments Long and String.- Specified by:
resolve
in interfaceGenericsResolver
- Parameters:
type
- the generic type (ParameterizedType, GenericArrayType, WildcardType, TypeVariable) to be resolvedcontainingType
- the type which his- Returns:
- the type resolved to the best of our ability.
- Since:
- 5.2.?
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asClass
Get the class represented by the reflected type. This method is lossy; You cannot recover the type information from the class that is returned.TypeVariable
the first bound is returned. If your type variable extends multiple interfaces that information is lost.WildcardType
the first lower bound is returned. If the wildcard is defined with upper bounds thenObject
is returned.- Specified by:
asClass
in interfaceGenericsResolver
- Parameters:
actualType
- a Class, ParameterizedType, GenericArrayType- Returns:
- the un-parameterized class associated with the type.
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toString
Convert the type into a string. The string representation approximates the code that would be used to define the type.- Parameters:
type
- - the type.- Returns:
- a string representation of the type, similar to how it was declared.
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