com.facebook.buck.core.graph.transformation.composition

Interface KeyComposer<Key1 extends ComputeKey<Result1>,Result1 extends ComputeResult,Key2 extends ComputeKey<?>>

All Superinterfaces:

Composer<Key1,Result1>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface KeyComposer<Key1 extends ComputeKey<Result1>,Result1 extends ComputeResult,Key2 extends ComputeKey<?>>
extends Composer<Key1,Result1>

A specific Composer that has output key restrictions

Method Summary

Modifier and Type	Method and Description
com.google.common.collect.ImmutableSet<Key2>	transitionWith(Key1 key, Result1 result)

Method Detail

transitionWith

com.google.common.collect.ImmutableSet<Key2> transitionWith(Key1 key,
                                                            Result1 result)
                                                     throws Exception

Specified by:

transitionWith in interface Composer<Key1 extends ComputeKey<Result1>,Result1 extends ComputeResult>

Parameters:

key - the key from the base computation

result - the result corresponding to the key of the base computation

Returns:

the set of dependencies of the composed transformation given the key and result from the base computation

Throws:

Exception - as appropriate when computing dependencies.