Package org.opentrafficsim.road.gtu.lane.perception

Interface PerceptionCollectable<H extends Headway,U>

Type Parameters:

H - headway type

U - underlying object type

All Superinterfaces:

java.lang.Iterable<H>, PerceptionIterable<H>

All Known Implementing Classes:

AbstractPerceptionIterable, AbstractPerceptionReiterable, DownstreamNeighborsIterable, LaneBasedObjectIterable, MultiLanePerceptionIterable, SortedSetPerceptionIterable, UpstreamNeighborsIterable

public interface PerceptionCollectable<H extends Headway,U>
extends PerceptionIterable<H>

Iterable that additionally provides support for PerceptionCollectors. These gather raw data, to only 'perceive' the result.

Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See OpenTrafficSim License.

Version:

$Revision$, $LastChangedDate$, by $Author$, initial version 1 mrt. 2018

Author:

Alexander Verbraeck, Peter Knoppers, Wouter Schakel

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	PerceptionCollectable.Intermediate<I>	Wrapper of intermediate result with info for the iterator algorithm.
static interface	PerceptionCollectable.PerceptionAccumulator<U,I>	Accumulates an object one at a time in to an accumulating intermediate result.
static interface	PerceptionCollectable.PerceptionCollector<C,U,I>	Combination of an accumulator and a finalizer.
static interface	PerceptionCollectable.PerceptionFinalizer<C,I>	Translates the last intermediate result of an accumulator in to the collection output.
static class	PerceptionCollectable.UnderlyingDistance<U>	Wrapper for object and its distance.

Method Summary

Modifier and Type	Method	Description
<C, I> C	collect(java.util.function.Supplier<I> identity, PerceptionCollectable.PerceptionAccumulator<? super U,I> accumulator, PerceptionCollectable.PerceptionFinalizer<C,I> finalizer)	Collect the underlying objects in to a perceived result.
default <C, I> C	collect(PerceptionCollectable.PerceptionCollector<C,? super U,I> collector)	Collect the underlying objects in to a perceived result.
java.util.Iterator<U>	underlying()	Returns an iterator over the underlying objects.
java.util.Iterator<PerceptionCollectable.UnderlyingDistance<U>>	underlyingWithDistance()	Returns an iterator over the underlying objects coupled with the distance.

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Methods inherited from interface org.opentrafficsim.road.gtu.lane.perception.PerceptionIterable

first, isEmpty

Method Details

collect

default <C, I> C collect(PerceptionCollectable.PerceptionCollector<C,? super U,I> collector)

Collect the underlying objects in to a perceived result. This methodology is loosely based on Stream.collect().

Type Parameters:

C - collection result type

I - intermediate type

Parameters:

collector - PerceptionCollector<C, ? super U, I>; collector

Returns:

C; collection result

collect

<C, I> C collect(java.util.function.Supplier<I> identity, PerceptionCollectable.PerceptionAccumulator<? super U,I> accumulator, PerceptionCollectable.PerceptionFinalizer<C,I> finalizer)

Collect the underlying objects in to a perceived result. This methodology is loosely based on Stream.collect().

Type Parameters:

C - collection result type

I - intermediate type

Parameters:

identity - Supplier<I>; the initial intermediate result value

accumulator - PerceptionAccumulator<? super U, I>; accumulator

finalizer - PerceptionFinalizer<C, I>; finalizer

Returns:

C; collection result

underlying

java.util.Iterator<U> underlying()

Returns an iterator over the underlying objects.

Returns:

Iterator<U>; iterator

underlyingWithDistance

java.util.Iterator<PerceptionCollectable.UnderlyingDistance<U>> underlyingWithDistance()

Returns an iterator over the underlying objects coupled with the distance.

Returns:

Iterator<UnderlyingDistance<U>>; iterator