HistoricalLinkedHashSet.java
- package org.opentrafficsim.core.perception.collections;
- import java.util.Collection;
- import java.util.LinkedHashSet;
- import org.djunits.value.vdouble.scalar.Time;
- import org.opentrafficsim.core.perception.HistoryManager;
- /**
- * LinkedHashSet-valued historical state. The current linked hash set is always maintained, and past states of the linked hash
- * set are obtained by applying the events between now and the requested time in reverse.<br>
- * <br>
- * The {@code Iterator} returned by this class does not support the {@code remove()} method. Any returned subset is
- * unmodifiable.
- * <p>
- * Copyright (c) 2013-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
- * BSD-style license. See <a href="https://opentrafficsim.org/docs/license.html">OpenTrafficSim License</a>.
- * </p>
- * @author <a href="https://github.com/averbraeck">Alexander Verbraeck</a>
- * @author <a href="https://github.com/peter-knoppers">Peter Knoppers</a>
- * @author <a href="https://github.com/wjschakel">Wouter Schakel</a>
- * @param <E> element type
- */
- public class HistoricalLinkedHashSet<E> extends AbstractHistoricalCollection<E, LinkedHashSet<E>> implements HistoricalSet<E>
- {
- /**
- * Constructor.
- * @param historyManager history manager
- * @param owner object that owns the historical value
- */
- public HistoricalLinkedHashSet(final HistoryManager historyManager, final Object owner)
- {
- super(historyManager, owner, new LinkedHashSet<>());
- }
- /**
- * Constructor.
- * @param historyManager history manager
- * @param owner object that owns the historical value
- * @param c initial collection
- */
- public HistoricalLinkedHashSet(final HistoryManager historyManager, final Object owner, final Collection<? extends E> c)
- {
- super(historyManager, owner, new LinkedHashSet<>(c));
- }
- @Override
- public LinkedHashSet<E> get()
- {
- return getCollection();
- }
- @Override
- public LinkedHashSet<E> get(final Time time)
- {
- if (isLastState(time))
- {
- return getCollection();
- }
- return fill(time, new LinkedHashSet<>());
- }
- @Override
- public String toString()
- {
- return "HistoricalLinkedHashSet [current=" + getCollection() + "]";
- }
- }