agi.foundation.infrastructure

Class HashCode.GetHashCodeFunction<T>

java.lang.Object

agi.foundation.compatibility.Delegate

agi.foundation.infrastructure.HashCode.GetHashCodeFunction<T>

Type Parameters:

T - The type of item.

Enclosing class:

HashCode

public abstract static class HashCode.GetHashCodeFunction<T>
extends Delegate

A delegate that obtains a hash code for a given item.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	HashCode.GetHashCodeFunction.Function<T> A functional interface for the containing delegate type.

Constructor Summary

Constructors

Constructor and Description
GetHashCodeFunction() Creates a new instance of this delegate.
GetHashCodeFunction(Class<?> targetClass, String methodName, Class<?>... methodParameterClasses) Initializes a delegate that will invoke a static method on a class.
GetHashCodeFunction(Object targetObject, String methodName, Class<?>... methodParameterClasses) Initializes a delegate that will invoke an instance method on a class instance.

Method Summary

Modifier and Type	Method and Description
abstract int	invoke(T item) A delegate that obtains a hash code for a given item.
static <T> HashCode.GetHashCodeFunction<T>	of(HashCode.GetHashCodeFunction.Function<T> f) Create a delegate for the given interface.
static <T> HashCode.GetHashCodeFunction<T>	of(HashCode.GetHashCodeFunction.Function<T> f, Class<?> targetClass, String methodName, Class<?>... methodParameterClasses) Create a delegate for the given interface.
static <T> HashCode.GetHashCodeFunction<T>	of(HashCode.GetHashCodeFunction.Function<T> f, Object targetObject, String methodName, Class<?>... methodParameterClasses) Create a delegate for the given interface.

Methods inherited from class agi.foundation.compatibility.Delegate

dynamicInvoke, equals, getMethod, getTarget, hashCode

Methods inherited from class java.lang.Object

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

Constructor Detail

GetHashCodeFunction

public GetHashCodeFunction()

Creates a new instance of this delegate.

GetHashCodeFunction

public GetHashCodeFunction(@Nonnull
                           Object targetObject,
                           @Nonnull
                           String methodName,
                           @Nonnull
                           Class<?>... methodParameterClasses)

Initializes a delegate that will invoke an instance method on a class instance.

Parameters:

targetObject - The class instance on which the delegate will invoke the method.

methodName - The name of the instance method.

methodParameterClasses - The type of the parameters of the instance method.

GetHashCodeFunction

public GetHashCodeFunction(@Nonnull
                           Class<?> targetClass,
                           @Nonnull
                           String methodName,
                           @Nonnull
                           Class<?>... methodParameterClasses)

Initializes a delegate that will invoke a static method on a class.

Parameters:

targetClass - The class that defines the method.

methodName - The name of the static method.

methodParameterClasses - The type of the parameters of the static method.

Method Detail

invoke

public abstract int invoke(T item)

A delegate that obtains a hash code for a given item.

Parameters:

item - The item.

Returns:

A hash code for the given item.

of

@Nonnull
public static <T> HashCode.GetHashCodeFunction<T> of(@Nonnull
                                                               HashCode.GetHashCodeFunction.Function<T> f)

Create a delegate for the given interface. This can be used to create a delegate from a lambda expression.

Parameters:

f - The function which will be invoked.

Returns:

A new delegate that will invoke the given function.

of

@Nonnull
public static <T> HashCode.GetHashCodeFunction<T> of(@Nonnull
                                                               HashCode.GetHashCodeFunction.Function<T> f,
                                                               @Nonnull
                                                               Object targetObject,
                                                               @Nonnull
                                                               String methodName,
                                                               @Nonnull
                                                               Class<?>... methodParameterClasses)

Create a delegate for the given interface. This can be used to create a delegate from a method reference to an instance method.

Parameters:

f - The function which will be invoked.

targetObject - The class instance on which the delegate will invoke the method.

methodName - The name of the instance method.

methodParameterClasses - The type of the parameters of the instance method.

Returns:

A new delegate that will invoke the given function.

of

@Nonnull
public static <T> HashCode.GetHashCodeFunction<T> of(@Nonnull
                                                               HashCode.GetHashCodeFunction.Function<T> f,
                                                               @Nonnull
                                                               Class<?> targetClass,
                                                               @Nonnull
                                                               String methodName,
                                                               @Nonnull
                                                               Class<?>... methodParameterClasses)

Create a delegate for the given interface. This can be used to create a delegate from a method reference to a static method.

Parameters:

f - The function which will be invoked.

targetClass - The class that defines the method.

methodName - The name of the static method.

methodParameterClasses - The type of the parameters of the static method.

Returns:

A new delegate that will invoke the given function.