Module lettuce.core

Package io.lettuce.core.dynamic.support

Class TypeVariableTypeInformation<T>

java.lang.Object

io.lettuce.core.dynamic.support.TypeVariableTypeInformation<T>

All Implemented Interfaces:

TypeInformation<T>

public class TypeVariableTypeInformation<T>
extends Object

Special TypeDiscoverer to determine the actual type for a TypeVariable. Will consider the context the TypeVariable is being used in.

Constructor Summary

Constructors

Constructor	Description
TypeVariableTypeInformation(TypeVariable<?> variable, Type owningType, io.lettuce.core.dynamic.support.TypeDiscoverer<?> parent, Map<TypeVariable<?>,Type> typeVariableMap)	Creates a bew TypeVariableTypeInformation for the given TypeVariable owning Type and parent TypeDiscoverer.

Method Summary

Modifier and Type	Method	Description
protected TypeInformation<?>	createInfo(Type fieldType)	Creates TypeInformation for the given Type.
protected TypeInformation<?>	doGetComponentType()
protected TypeInformation<?>	doGetMapValueType()
boolean	equals(Object obj)
TypeInformation<?>	getActualType()	Transparently returns the Map value type if the type is a Map, returns the component type if the type TypeInformation.isCollectionLike() or the simple type if none of this applies.
TypeInformation<?>	getComponentType()	Returns the component type for Collections or the key type for Maps.
Type	getGenericType()
TypeInformation<?>	getMapValueType()	Will return the type of the value in case the underlying type is a Map.
List<TypeInformation<?>>	getParameterTypes(Constructor<?> constructor)	Returns the TypeInformations for the parameters of the given Constructor.
List<TypeInformation<?>>	getParameterTypes(Method method)	Returns the TypeInformations for the parameters of the given Method.
ClassTypeInformation<?>	getRawTypeInformation()	Returns a ClassTypeInformation to represent the TypeInformation of the raw type of the current instance.
TypeInformation<?>	getReturnType(Method method)	Returns a TypeInformation for the return type of the given Method.
TypeInformation<?>	getSuperTypeInformation(Class<?> superType)	Returns the TypeInformation for the given raw super type.
Class<T>	getType()	Returns the type of the property.
TypeInformation<?>	getTypeArgument(Class<?> bound, int index)
List<TypeInformation<?>>	getTypeArguments()	Returns the TypeInformation for the type arguments of the current TypeInformation.
Map<TypeVariable<?>,Type>	getTypeVariableMap()	Returns the type variable map.
String	getVariableName()
int	hashCode()
boolean	isAssignableFrom(TypeInformation<?> target)	Returns if the current TypeInformation can be safely assigned to the given one.
boolean	isCollectionLike()	Returns whether the type can be considered a collection, which means it's a container of elements, e.g.
boolean	isMap()	Returns whether the property is a Map.
protected Class<T>	resolveClass(Type type)	Resolves the given type into a plain Class.
protected Type	resolveType(Type type)	Resolves the given type into a Type.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

TypeVariableTypeInformation

public TypeVariableTypeInformation(TypeVariable<?> variable,
Type owningType,
io.lettuce.core.dynamic.support.TypeDiscoverer<?> parent,
Map<TypeVariable<?>,Type> typeVariableMap)

Creates a bew TypeVariableTypeInformation for the given TypeVariable owning Type and parent TypeDiscoverer.

Parameters:

variable - must not be null

owningType - must not be null

parent - can be be null

typeVariableMap - must not be null

Method Details

getType

public Class<T> getType()

Description copied from interface: TypeInformation

Returns the type of the property. Will resolve generics and the generic context of

Specified by:

getType in interface TypeInformation<T>

Returns:

getTypeArguments

public List<TypeInformation<?>> getTypeArguments()

Description copied from interface: TypeInformation

Returns the TypeInformation for the type arguments of the current TypeInformation.

Specified by:

getTypeArguments in interface TypeInformation<T>

Returns:

equals

public boolean equals(Object obj)

hashCode

public int hashCode()

toString

public String toString()

Overrides:

toString in class Object

getVariableName

public String getVariableName()

createInfo

protected TypeInformation<?> createInfo(Type fieldType)

Creates TypeInformation for the given Type.

Returns:

getTypeVariableMap

public Map<TypeVariable<?>,Type> getTypeVariableMap()

Returns the type variable map.

Specified by:

getTypeVariableMap in interface TypeInformation<S>

Returns:

resolveClass

protected Class<T> resolveClass(Type type)

Resolves the given type into a plain Class.

Parameters:

type -

Returns:

resolveType

protected Type resolveType(Type type)

Resolves the given type into a Type.

Parameters:

type -

Returns:

getParameterTypes

public List<TypeInformation<?>> getParameterTypes(Constructor<?> constructor)

Description copied from interface: TypeInformation

Returns the TypeInformations for the parameters of the given Constructor.

Specified by:

getParameterTypes in interface TypeInformation<S>

Parameters:

constructor - must not be null.

Returns:

getGenericType

public Type getGenericType()

Specified by:

getGenericType in interface TypeInformation<S>

getRawTypeInformation

public ClassTypeInformation<?> getRawTypeInformation()

Description copied from interface: TypeInformation

Returns a ClassTypeInformation to represent the TypeInformation of the raw type of the current instance.

Specified by:

getRawTypeInformation in interface TypeInformation<S>

Returns:

getActualType

public TypeInformation<?> getActualType()

Description copied from interface: TypeInformation

Transparently returns the Map value type if the type is a Map, returns the component type if the type TypeInformation.isCollectionLike() or the simple type if none of this applies.

Specified by:

getActualType in interface TypeInformation<S>

Returns:

isMap

public boolean isMap()

Description copied from interface: TypeInformation

Returns whether the property is a Map. If this returns true you can expect TypeInformation.getComponentType() as well as TypeInformation.getMapValueType() to return something not null.

Specified by:

isMap in interface TypeInformation<S>

Returns:

getMapValueType

public TypeInformation<?> getMapValueType()

Description copied from interface: TypeInformation

Will return the type of the value in case the underlying type is a Map.

Specified by:

getMapValueType in interface TypeInformation<S>

Returns:

doGetMapValueType

protected TypeInformation<?> doGetMapValueType()

isCollectionLike

public boolean isCollectionLike()

Description copied from interface: TypeInformation

Returns whether the type can be considered a collection, which means it's a container of elements, e.g. a Collection and Array or anything implementing Iterable. If this returns true you can expect TypeInformation.getComponentType() to return a non-null value.

Specified by:

isCollectionLike in interface TypeInformation<S>

Returns:

getComponentType

public final TypeInformation<?> getComponentType()

Description copied from interface: TypeInformation

Returns the component type for Collections or the key type for Maps.

Specified by:

getComponentType in interface TypeInformation<S>

Returns:

doGetComponentType

protected TypeInformation<?> doGetComponentType()

getReturnType

public TypeInformation<?> getReturnType(Method method)

Description copied from interface: TypeInformation

Returns a TypeInformation for the return type of the given Method. Will potentially resolve generics information against the current types type parameter bindings.

Specified by:

getReturnType in interface TypeInformation<S>

Parameters:

method - must not be null.

Returns:

getParameterTypes

public List<TypeInformation<?>> getParameterTypes(Method method)

Description copied from interface: TypeInformation

Returns the TypeInformations for the parameters of the given Method.

Specified by:

getParameterTypes in interface TypeInformation<S>

Parameters:

method - must not be null.

Returns:

getSuperTypeInformation

public TypeInformation<?> getSuperTypeInformation(Class<?> superType)

Description copied from interface: TypeInformation

Returns the TypeInformation for the given raw super type.

Specified by:

getSuperTypeInformation in interface TypeInformation<S>

Parameters:

superType - must not be null.

Returns:

the TypeInformation for the given raw super type or null in case the current TypeInformation does not implement the given type.

isAssignableFrom

public boolean isAssignableFrom(TypeInformation<?> target)

Description copied from interface: TypeInformation

Returns if the current TypeInformation can be safely assigned to the given one. Mimics semantics of Class.isAssignableFrom(Class) but takes generics into account. Thus it will allow to detect that a List<Long> is assignable to List<? extends Number>.

Specified by:

isAssignableFrom in interface TypeInformation<S>

Returns:

getTypeArgument

public TypeInformation<?> getTypeArgument(Class<?> bound,
int index)