类的使用
cn.taketoday.core.TypeDescriptor

使用TypeDescriptor的程序包

程序包	说明
cn.taketoday.core	Provides core helpers that are not specific to any part of the framework.
cn.taketoday.core.conversion	Type Conversion System
cn.taketoday.core.conversion.support	Default implementation of the type conversion system.
cn.taketoday.expression	Core abstractions behind the Spring Expression Language.
cn.taketoday.expression.common	Common utility classes behind the Spring Expression Language.
cn.taketoday.expression.spel	SpEL's central implementation package.
cn.taketoday.expression.spel.standard	SpEL's standard parser implementation.
cn.taketoday.expression.spel.support	SpEL's default implementations for various core abstractions.
cn.taketoday.reflect	Optimised Reflection System

cn.taketoday.core中TypeDescriptor的使用

返回TypeDescriptor的cn.taketoday.core中的方法

修饰符和类型	方法	说明
static TypeDescriptor	TypeDescriptor.array(TypeDescriptor elementDescriptor)	Create a new type descriptor as an array of the specified type.
static TypeDescriptor	TypeDescriptor.collection(Class<?> collectionType, TypeDescriptor elementDescriptor)	Create a new type descriptor from a Collection type.
static TypeDescriptor	TypeDescriptor.collection(Class<?> collectionType, Class<?> element)
TypeDescriptor	TypeDescriptor.elementDescriptor(Object element)	If this type is a Collection or an array, creates a element TypeDescriptor from the provided collection or array element.
static TypeDescriptor	TypeDescriptor.forParameter(Executable executable, int parameterIndex)
static TypeDescriptor	TypeDescriptor.fromField(Field beanProperty)
static TypeDescriptor	TypeDescriptor.fromObject(Object source)	Create a new type descriptor for an object.
static TypeDescriptor	TypeDescriptor.fromParameter(Parameter parameter)
TypeDescriptor	TypeDescriptor.getElementDescriptor()	If this type is an array, returns the array's component type.
TypeDescriptor	TypeDescriptor.getMapKeyDescriptor()	If this type is a Map and its key type is parameterized, returns the map's key type.
TypeDescriptor	TypeDescriptor.getMapKeyDescriptor(Object mapKey)	If this type is a Map, creates a mapKey TypeDescriptor from the provided map key.
TypeDescriptor	TypeDescriptor.getMapValueDescriptor()	If this type is a Map and its value type is parameterized, returns the map's value type.
TypeDescriptor	TypeDescriptor.getMapValueDescriptor(Object mapValue)	If this type is a Map, creates a mapValue TypeDescriptor from the provided map value.
static TypeDescriptor	TypeDescriptor.map(Class<?> mapType, TypeDescriptor keyDescriptor, TypeDescriptor valueDescriptor)	Create a new type descriptor from a Map type.
static TypeDescriptor	TypeDescriptor.map(Class<?> mapType, Class<?> key, Class<?> value)
TypeDescriptor	TypeDescriptor.narrow(Object value)	Narrows this TypeDescriptor by setting its type to the class of the provided value.
static TypeDescriptor	TypeDescriptor.nested(MethodParameter methodParameter, int nestingLevel)	Create a type descriptor for a nested type declared within the method parameter.
static TypeDescriptor	TypeDescriptor.nested(TypeDescriptor typeDescriptor, int nestingLevel)
static TypeDescriptor	TypeDescriptor.nested(Field field, int nestingLevel)	Create a type descriptor for a nested type declared within the field.
TypeDescriptor	TypeDescriptor.upcast(Class<?> superType)	Cast this TypeDescriptor to a superclass or implemented interface preserving annotations and nested type context.
static TypeDescriptor	TypeDescriptor.valueOf(Class<?> type)	Create a new type descriptor from the given type.

参数类型为TypeDescriptor的cn.taketoday.core中的方法

修饰符和类型	方法	说明
static TypeDescriptor	TypeDescriptor.array(TypeDescriptor elementDescriptor)	Create a new type descriptor as an array of the specified type.
static TypeDescriptor	TypeDescriptor.collection(Class<?> collectionType, TypeDescriptor elementDescriptor)	Create a new type descriptor from a Collection type.
boolean	TypeDescriptor.isAssignableTo(TypeDescriptor typeDescriptor)	Returns true if an object of this type descriptor can be assigned to the location described by the given type descriptor.
static TypeDescriptor	TypeDescriptor.map(Class<?> mapType, TypeDescriptor keyDescriptor, TypeDescriptor valueDescriptor)	Create a new type descriptor from a Map type.
static TypeDescriptor	TypeDescriptor.nested(TypeDescriptor typeDescriptor, int nestingLevel)

cn.taketoday.core.conversion中TypeDescriptor的使用

返回TypeDescriptor的cn.taketoday.core.conversion中的方法

修饰符和类型	方法	说明
TypeDescriptor	ConversionFailedException.getSourceType()	Return the source type we tried to convert the value from.
TypeDescriptor	ConverterNotFoundException.getSourceType()	Return the source type that was requested to convert from.
TypeDescriptor	ConversionFailedException.getTargetType()	Return the target type we tried to convert the value to.
TypeDescriptor	ConverterNotFoundException.getTargetType()	Return the target type that was requested to convert to.

参数类型为TypeDescriptor的cn.taketoday.core.conversion中的方法

修饰符和类型	方法	说明
boolean	ConversionService.canConvert(TypeDescriptor sourceType, TypeDescriptor targetType)	Return true if objects of sourceType can be converted to the targetType.
<T> T	ConversionService.convert(Object source, TypeDescriptor targetType)	Convert the given source to the specified targetType.
Object	ConversionService.convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType)	Convert the given source to the specified targetType.
Object	GenericConverter.convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType)	Convert the source object to the targetType described by the TypeDescriptor.
GenericConverter	ConversionService.getConverter(TypeDescriptor sourceType, TypeDescriptor targetType)	Hook method to lookup the converter for a given sourceType/targetType pair.
default GenericConverter	ConversionService.getConverter(Class<?> sourceType, TypeDescriptor targetType)	Hook method to lookup the converter for a given sourceType/targetType pair.
default GenericConverter	ConversionService.getConverter(Object sourceObject, TypeDescriptor targetType)	Hook method to lookup the converter for a given sourceType/targetType pair.
boolean	ConditionalConverter.matches(TypeDescriptor sourceType, TypeDescriptor targetType)	Should the conversion from sourceType to targetType currently under consideration be selected?

参数类型为TypeDescriptor的cn.taketoday.core.conversion中的构造器

限定符	构造器	说明
	ConversionFailedException(TypeDescriptor sourceType, TypeDescriptor targetType, Object value, Throwable cause)	Create a new conversion exception.
	ConverterNotFoundException(TypeDescriptor sourceType, TypeDescriptor targetType)	Create a new conversion executor not found exception.

cn.taketoday.core.conversion.support中TypeDescriptor的使用

参数类型为TypeDescriptor的cn.taketoday.core.conversion.support中的方法

修饰符和类型	方法	说明
boolean	GenericConversionService.canBypassConvert(TypeDescriptor sourceType, TypeDescriptor targetType)	Return whether conversion between the source type and the target type can be bypassed.
boolean	GenericConversionService.canConvert(TypeDescriptor sourceType, TypeDescriptor targetType)
<T> T	GenericConversionService.convert(Object source, TypeDescriptor targetType)	Convenience operation for converting a source object to the specified targetType, where the target type is a descriptor that provides additional conversion context.
Object	GenericConversionService.convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType)
protected Object	GenericConversionService.convertNullSource(TypeDescriptor sourceType, TypeDescriptor targetType)	Template method to convert a null source.
GenericConverter	GenericConversionService.getConverter(TypeDescriptor sourceType, TypeDescriptor targetType)	Hook method to lookup the converter for a given sourceType/targetType pair.
protected GenericConverter	GenericConversionService.getDefaultConverter(TypeDescriptor sourceType, TypeDescriptor targetType)	Return the default converter if no converter is found for the given sourceType/targetType pair.

参数类型为TypeDescriptor的cn.taketoday.core.conversion.support中的构造器

限定符	构造器	说明
	ConvertingPropertyEditorAdapter(ConversionService conversionService, TypeDescriptor targetDescriptor)	Create a new ConvertingPropertyEditorAdapter for a given ConversionService and the given target type.

cn.taketoday.expression中TypeDescriptor的使用

返回TypeDescriptor的cn.taketoday.expression中的方法

修饰符和类型	方法	说明
TypeDescriptor	TypedValue.getTypeDescriptor()
TypeDescriptor	Expression.getValueTypeDescriptor()	Return the most general type that can be passed to a Expression.setValue(java.lang.Object, java.lang.Object) method using the default context.
TypeDescriptor	Expression.getValueTypeDescriptor(EvaluationContext context)	Return the most general type that can be passed to the Expression.setValue(EvaluationContext, Object) method for the given context.
TypeDescriptor	Expression.getValueTypeDescriptor(EvaluationContext context, Object rootObject)	Return the most general type that can be passed to the Expression.setValue(EvaluationContext, Object, Object) method for the given context.
TypeDescriptor	Expression.getValueTypeDescriptor(Object rootObject)	Return the most general type that can be passed to the Expression.setValue(Object, Object) method using the default context.

参数类型为TypeDescriptor的cn.taketoday.expression中的方法

修饰符和类型	方法	说明
boolean	TypeConverter.canConvert(TypeDescriptor sourceType, TypeDescriptor targetType)	Return true if the type converter can convert the specified type to the desired target type.
Object	TypeConverter.convertValue(Object value, TypeDescriptor sourceType, TypeDescriptor targetType)	Convert (or coerce) a value from one type to another, for example from a boolean to a String.

类型变量类型为TypeDescriptor的cn.taketoday.expression中的方法参数

修饰符和类型	方法	说明
ConstructorExecutor	ConstructorResolver.resolve(EvaluationContext context, String typeName, List<TypeDescriptor> argumentTypes)	Within the supplied context determine a suitable constructor on the supplied type that can handle the specified arguments.
MethodExecutor	MethodResolver.resolve(EvaluationContext context, Object targetObject, String name, List<TypeDescriptor> argumentTypes)	Within the supplied context determine a suitable method on the supplied object that can handle the specified arguments.

参数类型为TypeDescriptor的cn.taketoday.expression中的构造器

限定符	构造器	说明
	TypedValue(Object value, TypeDescriptor typeDescriptor)	Create a TypedValue for a particular value with a particular TypeDescriptor which may contain additional generic declarations.

cn.taketoday.expression.common中TypeDescriptor的使用

返回TypeDescriptor的cn.taketoday.expression.common中的方法

修饰符和类型	方法	说明
TypeDescriptor	CompositeStringExpression.getValueTypeDescriptor()
TypeDescriptor	CompositeStringExpression.getValueTypeDescriptor(EvaluationContext context)
TypeDescriptor	CompositeStringExpression.getValueTypeDescriptor(EvaluationContext context, Object rootObject)
TypeDescriptor	CompositeStringExpression.getValueTypeDescriptor(Object rootObject)
TypeDescriptor	LiteralExpression.getValueTypeDescriptor()
TypeDescriptor	LiteralExpression.getValueTypeDescriptor(EvaluationContext context)
TypeDescriptor	LiteralExpression.getValueTypeDescriptor(EvaluationContext context, Object rootObject)
TypeDescriptor	LiteralExpression.getValueTypeDescriptor(Object rootObject)

cn.taketoday.expression.spel中TypeDescriptor的使用

参数类型为TypeDescriptor的cn.taketoday.expression.spel中的方法

修饰符和类型	方法	说明
Object	ExpressionState.convertValue(TypedValue value, TypeDescriptor targetTypeDescriptor)
Object	ExpressionState.convertValue(Object value, TypeDescriptor targetTypeDescriptor)

cn.taketoday.expression.spel.standard中TypeDescriptor的使用

返回TypeDescriptor的cn.taketoday.expression.spel.standard中的方法

修饰符和类型	方法	说明
TypeDescriptor	SpelExpression.getValueTypeDescriptor()
TypeDescriptor	SpelExpression.getValueTypeDescriptor(EvaluationContext context)
TypeDescriptor	SpelExpression.getValueTypeDescriptor(EvaluationContext context, Object rootObject)
TypeDescriptor	SpelExpression.getValueTypeDescriptor(Object rootObject)

cn.taketoday.expression.spel.support中TypeDescriptor的使用

参数类型为TypeDescriptor的cn.taketoday.expression.spel.support中的方法

修饰符和类型	方法	说明
boolean	StandardTypeConverter.canConvert(TypeDescriptor sourceType, TypeDescriptor targetType)
Object	StandardTypeConverter.convertValue(Object value, TypeDescriptor sourceType, TypeDescriptor targetType)
void	StandardEvaluationContext.setRootObject(Object rootObject, TypeDescriptor typeDescriptor)
SimpleEvaluationContext.Builder	SimpleEvaluationContext.Builder.withTypedRootObject(Object rootObject, TypeDescriptor typeDescriptor)	Specify a typed root object to resolve against.

类型变量类型为TypeDescriptor的cn.taketoday.expression.spel.support中的方法参数

修饰符和类型	方法	说明
static int	ReflectionHelper.getTypeDifferenceWeight(List<TypeDescriptor> paramTypes, List<TypeDescriptor> argTypes)	Based on ReflectiveMethodInvoker.getTypeDifferenceWeight(Class[], Object[]) but operates on TypeDescriptors.
MethodExecutor	DataBindingMethodResolver.resolve(EvaluationContext context, Object targetObject, String name, List<TypeDescriptor> argumentTypes)
ConstructorExecutor	ReflectiveConstructorResolver.resolve(EvaluationContext context, String typeName, List<TypeDescriptor> argumentTypes)	Locate a constructor on the type.
MethodExecutor	ReflectiveMethodResolver.resolve(EvaluationContext context, Object targetObject, String name, List<TypeDescriptor> argumentTypes)	Locate a method on a type.

cn.taketoday.reflect中TypeDescriptor的使用

返回TypeDescriptor的cn.taketoday.reflect中的方法

修饰符和类型	方法	说明
protected TypeDescriptor	Property.createDescriptor()
final TypeDescriptor	Property.getTypeDescriptor()	Returns TypeDescriptor for this property