org.testifyproject.trait

Interface TypeTrait

All Known Subinterfaces:

FieldAnnotationTrait, FieldDescriptor, FieldTrait, ParameterDescriptor, SutDescriptor

public interface TypeTrait

A contract that specifies type traits.

Author:

saden

Method Summary

Modifier and Type	Method and Description
default Method	findMethod(Class<?> type, String methodName, Class<?>... methodArgTypes) Find a method with the given name and argument types.
default Optional<Method>	findMethod(String methodName) Find a method with the given name.
default ClassLoader	getClassLoader() Get the type's class loader.
Type	getGenericType() Get the instance generic type.
Class<?>	getType() Get the instance type.
default String	getTypeName() Get human readable type name.
default <T> Optional<T>	invoke(Object instance, String methodName, Object... methodArgs) Invoke the given method with the given argument on the given instance.
default Boolean	isSubtypeOf(Type type) Determine if the type is a subtype of the given type.
default Boolean	isSupertypeOf(Type type) Determine if the type is a supertype of the given type.

Method Detail

getType

Class<?> getType()

Get the instance type.

Returns:

the type

getGenericType

Type getGenericType()

Get the instance generic type.

Returns:

the generic type

getTypeName

default String getTypeName()

Get human readable type name.

Returns:

the type name.

getClassLoader

default ClassLoader getClassLoader()

Get the type's class loader.

Returns:

the type's class loader.

isSubtypeOf

default Boolean isSubtypeOf(Type type)

Determine if the type is a subtype of the given type.

Parameters:

type - the subtype

Returns:

true if type is a subtype of the given type, false otherwise

isSupertypeOf

default Boolean isSupertypeOf(Type type)

Determine if the type is a supertype of the given type.

Parameters:

type - the super type

Returns:

true if type is a supertype of the given type, false otherwise

invoke

default <T> Optional<T> invoke(Object instance,
                               String methodName,
                               Object... methodArgs)

Invoke the given method with the given argument on the given instance.

Type Parameters:

T - the return type

Parameters:

instance - the instance the underlying method is invoked from

methodName - the method name

methodArgs - method arguments

Returns:

optional containing return value, empty optional otherwise

findMethod

default Method findMethod(Class<?> type,
                          String methodName,
                          Class<?>... methodArgTypes)

Find a method with the given name and argument types.

Parameters:

type - type that will be inspected for the method

methodName - the method name

methodArgTypes - the method argument types

Returns:

found method or throws IllegalStateException

findMethod

default Optional<Method> findMethod(String methodName)

Find a method with the given name. Note that this method will find the first method that matches the given name without consideration for method parameters.

Parameters:

methodName - the method name

Returns:

found method or throws IllegalStateException