io.virtdata.api.composers

Class FunctionAssembler

java.lang.Object

io.virtdata.api.composers.FunctionAssembler

public class FunctionAssembler
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FunctionAssembler.LongIdentity

Constructor Summary

Constructors

Constructor and Description
FunctionAssembler()

Method Summary

Modifier and Type	Method and Description
FunctionAssembler	andThen(Function andThen) Allows for mapping generic functions into the composed lambda.
FunctionAssembler	andThen(LongFunction andThen) Only valid after 0 or more LongUnaryOperators, but not after another LongFunction which isn't a LongFunction<Long>.
FunctionAssembler	andThen(LongUnaryOperator andThen) Valid for any number of calls from the beginning of assembly.
FunctionAssembler	andThen(Object functionObject)
<T> DataMapper<T>	getDataMapper()
LongFunction<?>	getFunction()

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionAssembler

public FunctionAssembler()

Method Detail

andThen

public FunctionAssembler andThen(Object functionObject)

andThen

public FunctionAssembler andThen(LongUnaryOperator andThen)

Valid for any number of calls from the beginning of assembly.

Parameters:

andThen - a LongUnaryOperator

Returns:

this FunctionAssemble

andThen

public FunctionAssembler andThen(LongFunction andThen)

Only valid after 0 or more LongUnaryOperators, but not after another LongFunction which isn't a LongFunction<Long>. Without explicit type annotations (type erasure doesn't help you for late binding), we will assume that multiple LongFunctions in sequence follow LongFunction<Long>s and cast or error if not.

Parameters:

andThen - a LongFunction

Returns:

this FunctionAssembler

andThen

public FunctionAssembler andThen(Function andThen)

Allows for mapping generic functions into the composed lambda. This is not yet type safe, because type erasure.

If this is called after a LongFunction<?> has been added, then the types are presumed to match, and the lamda is coerced via casting.

Parameters:

andThen - Function to add to the outer calling layer

Returns:

this FunctionAssembler

getFunction

public LongFunction<?> getFunction()

getDataMapper

public <T> DataMapper<T> getDataMapper()