Package com.apple.foundationdb.record.query.plan.temp.matching

Interface MatchFunction<T,M>

Type Parameters:

T - element type

M - type of intermediate result

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 MatchFunction<T,M>

An functional interface for a match function that computes a match result (an Iterable of type M.

Method Summary

Modifier and Type	Method	Description
Iterable<M>	apply(T element, T otherElement, AliasMap aliasMap)	Compute a match result.

Method Detail

apply

Iterable<M> apply(@Nonnull
                  T element,
                  @Nonnull
                  T otherElement,
                  @Nonnull
                  AliasMap aliasMap)

Compute a match result.

Parameters:

element - element on this side

otherElement - element on the other side

aliasMap - bindings that already have been established

Returns:

an Iterable of type M. The matching logic interprets the resulting Iterable. A non-empty Iterable is considered a successful match attempt; an empty Iterable is considered a failed match attempt.