Sum the old priority with the new priority if an element is offered a second time
This commit is contained in:
Andrea Cavalli
parent
f99ef5906e
commit
b754302914
@ -1,18 +1,20 @@
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package org.warp.commonutils.type;
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import com.google.common.collect.Queues;
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import it.unimi.dsi.fastutil.objects.Object2FloatMap;
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import it.unimi.dsi.fastutil.objects.Object2FloatOpenHashMap;
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import java.lang.reflect.Array;
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import java.util.Collection;
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import java.util.Iterator;
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import java.util.PriorityQueue;
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import java.util.Queue;
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import java.util.function.Consumer;
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import java.util.stream.Collectors;
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import java.util.function.IntFunction;
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import java.util.stream.Stream;
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import org.jetbrains.annotations.NotNull;
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public class FloatPriorityQueue<T> implements Queue<T> {
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private final Object2FloatMap<T> contentValues;
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private final Queue<ScoredValue<T>> internalQueue;
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public static <T> FloatPriorityQueue<T> of() {
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@ -40,62 +42,75 @@ public class FloatPriorityQueue<T> implements Queue<T> {
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}
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public FloatPriorityQueue(PriorityQueue<ScoredValue<T>> internalQueue) {
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this.internalQueue = internalQueue;
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this(internalQueue.size());
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for (ScoredValue<T> tScoredValue : internalQueue) {
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add(tScoredValue.getValue(), tScoredValue.getScore());
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}
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}
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private FloatPriorityQueue(Queue<ScoredValue<T>> internalQueue) {
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private FloatPriorityQueue(Object2FloatMap<T> contentValues, Queue<ScoredValue<T>> internalQueue) {
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this.contentValues = contentValues;
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this.internalQueue = internalQueue;
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}
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public FloatPriorityQueue() {
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this.contentValues = new Object2FloatOpenHashMap<>();
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internalQueue = new PriorityQueue<>();
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}
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public FloatPriorityQueue(int initialCapacity) {
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this.contentValues = new Object2FloatOpenHashMap<>(initialCapacity);
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internalQueue = new PriorityQueue<>(Math.max(1, initialCapacity));
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}
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public static <T> FloatPriorityQueue<T> synchronize(FloatPriorityQueue<T> queue) {
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return new FloatPriorityQueue<T>(Queues.synchronizedQueue(queue.internalQueue));
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return new SynchronizedFloatPriorityQueue<T>(queue.contentValues, queue.internalQueue);
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}
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public static <T> FloatPriorityQueue<T> synchronizedPq(int initialCapacity) {
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return new FloatPriorityQueue<T>(Queues.synchronizedQueue(new PriorityQueue<>(Math.max(1, initialCapacity))));
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var pq = new FloatPriorityQueue<T>(initialCapacity);
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return new SynchronizedFloatPriorityQueue<T>(pq.contentValues, pq.internalQueue);
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}
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@Override
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public int size() {
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assert contentValues.size() == internalQueue.size();
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return internalQueue.size();
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}
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@Override
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public boolean isEmpty() {
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assert contentValues.isEmpty();
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return internalQueue.isEmpty();
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}
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@Override
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public boolean contains(Object o) {
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assert contentValues.size() == internalQueue.size();
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return internalQueue.contains(ScoredValue.of(0, o));
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}
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@NotNull
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@Override
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public Iterator<T> iterator() {
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assert contentValues.size() == internalQueue.size();
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var it = internalQueue.iterator();
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return new Iterator<T>() {
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@Override
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public boolean hasNext() {
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assert contentValues.size() == internalQueue.size();
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return it.hasNext();
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}
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@Override
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public T next() {
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assert contentValues.size() == internalQueue.size();
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return getValueOrNull(it.next());
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}
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};
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}
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private T getValueOrNull(ScoredValue<T> scoredValue) {
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private static <T> T getValueOrNull(ScoredValue<T> scoredValue) {
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if (scoredValue == null) {
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return null;
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} else {
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@ -106,100 +121,313 @@ public class FloatPriorityQueue<T> implements Queue<T> {
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@NotNull
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@Override
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public Object[] toArray() {
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return internalQueue.stream().map(this::getValueOrNull).toArray(Object[]::new);
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assert contentValues.size() == internalQueue.size();
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return internalQueue.stream().map(FloatPriorityQueue::getValueOrNull).toArray(Object[]::new);
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}
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@NotNull
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@Override
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public <T1> T1[] toArray(@NotNull T1[] a) {
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assert contentValues.size() == internalQueue.size();
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return internalQueue
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.stream()
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.map(this::getValueOrNull)
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.map(FloatPriorityQueue::getValueOrNull)
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.toArray(i -> (T1[]) Array.newInstance(a.getClass().getComponentType(), i));
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}
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@Deprecated
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@Override
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public boolean add(T t) {
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return internalQueue.add(ScoredValue.of(0, t));
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assert contentValues.size() == internalQueue.size();
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return offer(t, 0);
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}
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public boolean addTop(T t) {
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assert contentValues.size() == internalQueue.size();
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if (contentValues.getFloat(t) == Integer.MAX_VALUE) {
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return false;
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} else {
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if (contentValues.containsKey(t)) {
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internalQueue.remove(ScoredValue.of(0, t));
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}
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contentValues.put(t, Integer.MAX_VALUE);
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return internalQueue.add(ScoredValue.of(Integer.MAX_VALUE, t));
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}
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}
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public boolean add(T t, float score) {
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return internalQueue.add(ScoredValue.of(score, t));
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assert contentValues.size() == internalQueue.size();
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return offer(t, score);
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}
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@Override
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public boolean remove(Object o) {
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assert contentValues.size() == internalQueue.size();
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contentValues.removeFloat(o);
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return internalQueue.remove(ScoredValue.of(0, o));
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}
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@Override
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public boolean containsAll(@NotNull Collection<?> c) {
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return internalQueue.containsAll(c.stream().map(val -> ScoredValue.of(0, val)).collect(Collectors.toList()));
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assert contentValues.size() == internalQueue.size();
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for (Object o : c) {
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//noinspection SuspiciousMethodCalls
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if (!contentValues.containsKey(o)) {
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return false;
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}
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}
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return true;
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}
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@Override
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public boolean addAll(@NotNull Collection<? extends T> c) {
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return internalQueue.addAll(c.stream().map(val -> ScoredValue.of(0, (T) val)).collect(Collectors.toList()));
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assert contentValues.size() == internalQueue.size();
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boolean added = false;
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for (T t : c) {
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added |= add(t);
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}
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return added;
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}
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@Override
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public boolean removeAll(@NotNull Collection<?> c) {
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return internalQueue.removeAll(c.stream().map(val -> ScoredValue.of(0, val)).collect(Collectors.toList()));
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assert contentValues.size() == internalQueue.size();
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boolean removed = false;
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for (Object o : c) {
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removed |= remove(o);
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}
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return removed;
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}
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@Override
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public boolean retainAll(@NotNull Collection<?> c) {
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return internalQueue.retainAll(c.stream().map(val -> ScoredValue.of(0, val)).collect(Collectors.toList()));
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assert contentValues.size() == internalQueue.size();
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return removeIf(item -> !c.contains(item));
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}
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@Override
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public void clear() {
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assert contentValues.size() == internalQueue.size();
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contentValues.clear();
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internalQueue.clear();
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}
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@Override
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public boolean offer(T t) {
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assert contentValues.size() == internalQueue.size();
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return offer(ScoredValue.of(0, t));
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}
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public boolean offer(T t, float score) {
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assert contentValues.size() == internalQueue.size();
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return offer(ScoredValue.of(score, t));
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}
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public boolean offer(ScoredValue<T> value) {
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return this.internalQueue.offer(value);
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assert contentValues.size() == internalQueue.size();
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boolean added = true;
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float oldValue;
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if (contentValues.containsKey(value.getValue())) {
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internalQueue.remove(value);
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oldValue = contentValues.getFloat(value.getValue());
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added = false;
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} else {
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oldValue = 0f;
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}
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contentValues.put(value.getValue(), oldValue + value.getScore());
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internalQueue.add(value);
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return added;
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}
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@Override
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public T remove() {
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return getValueOrNull(internalQueue.remove());
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assert contentValues.size() == internalQueue.size();
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var val = internalQueue.remove();
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if (val != null) {
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contentValues.removeFloat(val.getValue());
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}
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return getValueOrNull(val);
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}
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@Override
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public T poll() {
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return getValueOrNull(internalQueue.poll());
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assert contentValues.size() == internalQueue.size();
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var val = internalQueue.poll();
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if (val != null) {
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contentValues.removeFloat(val.getValue());
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}
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return getValueOrNull(val);
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}
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@Override
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public T element() {
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assert contentValues.size() == internalQueue.size();
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return getValueOrNull(internalQueue.element());
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}
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@Override
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public T peek() {
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assert contentValues.size() == internalQueue.size();
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return getValueOrNull(internalQueue.peek());
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}
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public void forEachItem(Consumer<ScoredValue<T>> action) {
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assert contentValues.size() == internalQueue.size();
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internalQueue.forEach(action);
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}
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public Stream<ScoredValue<T>> streamItems() {
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assert contentValues.size() == internalQueue.size();
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return internalQueue.stream();
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}
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private static class SynchronizedFloatPriorityQueue<T> extends FloatPriorityQueue<T> {
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public SynchronizedFloatPriorityQueue(Object2FloatMap<T> contentValues, Queue<ScoredValue<T>> internalQueue) {
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super(contentValues, internalQueue);
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}
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@Override
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public synchronized int size() {
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return super.size();
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}
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@Override
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public synchronized boolean isEmpty() {
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return super.isEmpty();
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}
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@Override
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public synchronized boolean contains(Object o) {
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return super.contains(o);
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}
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@Override
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public synchronized @NotNull Iterator<T> iterator() {
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var it = super.iterator();
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return new Iterator<T>() {
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@Override
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public boolean hasNext() {
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synchronized (SynchronizedFloatPriorityQueue.this) {
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return it.hasNext();
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}
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}
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@Override
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public T next() {
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synchronized (SynchronizedFloatPriorityQueue.this) {
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return it.next();
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}
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}
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};
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}
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@Override
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public synchronized @NotNull Object[] toArray() {
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return super.toArray();
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}
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@Override
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public synchronized <T1> @NotNull T1[] toArray(@NotNull T1[] a) {
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return super.toArray(a);
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}
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@Override
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public synchronized <T1> T1[] toArray(IntFunction<T1[]> generator) {
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//noinspection SuspiciousToArrayCall
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return super.toArray(generator);
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}
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@Override
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public synchronized boolean add(T t, float score) {
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return super.add(t, score);
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}
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@Override
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public synchronized boolean addTop(T t) {
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return super.addTop(t);
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}
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@Override
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public synchronized boolean add(T t) {
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return super.add(t);
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}
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@Override
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public synchronized boolean addAll(@NotNull Collection<? extends T> c) {
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return super.addAll(c);
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}
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@Override
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public synchronized boolean remove(Object o) {
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return super.remove(o);
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}
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@Override
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public synchronized boolean removeAll(@NotNull Collection<?> c) {
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return super.removeAll(c);
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}
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@Override
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public synchronized boolean containsAll(@NotNull Collection<?> c) {
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return super.containsAll(c);
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}
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@Override
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public synchronized boolean retainAll(@NotNull Collection<?> c) {
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return super.retainAll(c);
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}
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@Override
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public synchronized void clear() {
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super.clear();
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}
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@Override
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public synchronized boolean offer(T t) {
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return super.offer(t);
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}
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@Override
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public synchronized boolean offer(T t, float score) {
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return super.offer(t, score);
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}
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@Override
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public synchronized boolean offer(ScoredValue<T> value) {
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return super.offer(value);
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}
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@Override
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public synchronized T remove() {
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return super.remove();
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}
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@Override
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public synchronized T poll() {
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return super.poll();
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}
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@Override
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public synchronized T element() {
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return super.element();
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}
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@Override
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public synchronized T peek() {
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return super.peek();
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}
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@Override
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public synchronized void forEachItem(Consumer<ScoredValue<T>> action) {
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super.forEachItem(action);
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}
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@Override
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public synchronized Stream<ScoredValue<T>> streamItems() {
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return super.streamItems();
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}
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}
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}
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