/*
 * Copyright (c) 2021 Goldman Sachs and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

package org.eclipse.collections.impl.set.mutable;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Iterator;
import java.util.RandomAccess;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;

import org.eclipse.collections.api.LazyIterable;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.block.function.Function;
import org.eclipse.collections.api.block.function.Function2;
import org.eclipse.collections.api.block.function.primitive.BooleanFunction;
import org.eclipse.collections.api.block.function.primitive.ByteFunction;
import org.eclipse.collections.api.block.function.primitive.CharFunction;
import org.eclipse.collections.api.block.function.primitive.DoubleFunction;
import org.eclipse.collections.api.block.function.primitive.FloatFunction;
import org.eclipse.collections.api.block.function.primitive.IntFunction;
import org.eclipse.collections.api.block.function.primitive.LongFunction;
import org.eclipse.collections.api.block.function.primitive.ShortFunction;
import org.eclipse.collections.api.block.predicate.Predicate;
import org.eclipse.collections.api.block.predicate.Predicate2;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.collection.primitive.MutableBooleanCollection;
import org.eclipse.collections.api.collection.primitive.MutableByteCollection;
import org.eclipse.collections.api.collection.primitive.MutableCharCollection;
import org.eclipse.collections.api.collection.primitive.MutableDoubleCollection;
import org.eclipse.collections.api.collection.primitive.MutableFloatCollection;
import org.eclipse.collections.api.collection.primitive.MutableIntCollection;
import org.eclipse.collections.api.collection.primitive.MutableLongCollection;
import org.eclipse.collections.api.collection.primitive.MutableShortCollection;
import org.eclipse.collections.api.factory.Sets;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.api.map.MutableMap;
import org.eclipse.collections.api.multimap.set.MutableSetMultimap;
import org.eclipse.collections.api.ordered.OrderedIterable;
import org.eclipse.collections.api.partition.set.PartitionMutableSet;
import org.eclipse.collections.api.set.ImmutableSet;
import org.eclipse.collections.api.set.MultiReaderSet;
import org.eclipse.collections.api.set.MutableSet;
import org.eclipse.collections.api.set.ParallelUnsortedSetIterable;
import org.eclipse.collections.api.set.SetIterable;
import org.eclipse.collections.api.set.UnsortedSetIterable;
import org.eclipse.collections.api.set.primitive.MutableBooleanSet;
import org.eclipse.collections.api.set.primitive.MutableByteSet;
import org.eclipse.collections.api.set.primitive.MutableCharSet;
import org.eclipse.collections.api.set.primitive.MutableDoubleSet;
import org.eclipse.collections.api.set.primitive.MutableFloatSet;
import org.eclipse.collections.api.set.primitive.MutableIntSet;
import org.eclipse.collections.api.set.primitive.MutableLongSet;
import org.eclipse.collections.api.set.primitive.MutableShortSet;
import org.eclipse.collections.api.tuple.Pair;
import org.eclipse.collections.impl.collection.mutable.AbstractMultiReaderMutableCollection;
import org.eclipse.collections.impl.lazy.parallel.set.MultiReaderParallelUnsortedSetIterable;
import org.eclipse.collections.impl.utility.LazyIterate;

import static org.eclipse.collections.impl.factory.Iterables.mList;

MultiReadUnifiedSet provides a thread-safe wrapper around a UnifiedSet, using a ReentrantReadWriteLock. In order to provide true thread-safety, MultiReaderUnifiedSet does not implement iterator() as this method requires an external lock to be taken to provide thread-safe iteration. You can use an iterator() if you use the withReadLockAndDelegate() or withWriteLockAndDelegate() methods. Both of these methods take a parameter of type Procedure<MutableSet>, and a wrapped version of the underlying Unified is returned. This wrapper guarantees that no external pointer can ever reference the underlying UnifiedSet outside of a locked procedure. In the case of the read lock method, an Unmodifiable version of the collection is offered, which will throw UnsupportedOperationExceptions on any write methods like add or remove.
/** * MultiReadUnifiedSet provides a thread-safe wrapper around a UnifiedSet, using a ReentrantReadWriteLock. In order to * provide true thread-safety, MultiReaderUnifiedSet does <em>not</em> implement {@code iterator()} as this method requires an external * lock to be taken to provide thread-safe iteration. You can use an {@code iterator()} if you use the * {@code withReadLockAndDelegate()} or {@code withWriteLockAndDelegate()} methods. Both of these methods take a parameter of type * {@code Procedure<MutableSet>}, and a wrapped version of the underlying Unified is returned. This wrapper guarantees that no * external pointer can ever reference the underlying UnifiedSet outside of a locked procedure. In the case of the read * lock method, an Unmodifiable version of the collection is offered, which will throw UnsupportedOperationExceptions on * any write methods like add or remove. */
public final class MultiReaderUnifiedSet<T> extends AbstractMultiReaderMutableCollection<T> implements RandomAccess, Externalizable, MultiReaderSet<T> { private static final long serialVersionUID = 1L; private MutableSet<T> delegate;
Deprecated:Empty default constructor used for serialization.
/** * @deprecated Empty default constructor used for serialization. */
@SuppressWarnings("UnusedDeclaration") @Deprecated public MultiReaderUnifiedSet() { // For Externalizable use only } private MultiReaderUnifiedSet(MutableSet<T> newDelegate) { this(newDelegate, new ReentrantReadWriteLock()); } private MultiReaderUnifiedSet(MutableSet<T> newDelegate, ReadWriteLock newLock) { this.lock = newLock; this.lockWrapper = new ReadWriteLockWrapper(newLock); this.delegate = newDelegate; } public static <T> MultiReaderUnifiedSet<T> newSet() { return new MultiReaderUnifiedSet<>(UnifiedSet.newSet()); } public static <T> MultiReaderUnifiedSet<T> newSet(int capacity) { return new MultiReaderUnifiedSet<>(UnifiedSet.newSet(capacity)); } public static <T> MultiReaderUnifiedSet<T> newSet(Iterable<T> iterable) { return new MultiReaderUnifiedSet<>(UnifiedSet.newSet(iterable)); } public static <T> MultiReaderUnifiedSet<T> newSetWith(T... elements) { return new MultiReaderUnifiedSet<>(UnifiedSet.newSetWith(elements)); } @Override protected MutableSet<T> getDelegate() { return this.delegate; } // Exposed for testing UntouchableMutableSet<T> asReadUntouchable() { return new UntouchableMutableSet<>(this.delegate.asUnmodifiable()); } // Exposed for testing UntouchableMutableSet<T> asWriteUntouchable() { return new UntouchableMutableSet<>(this.delegate); } public void withReadLockAndDelegate(Procedure<? super MutableSet<T>> procedure) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { UntouchableMutableSet<T> untouchableSet = this.asReadUntouchable(); procedure.value(untouchableSet); untouchableSet.becomeUseless(); } } public void withWriteLockAndDelegate(Procedure<? super MutableSet<T>> procedure) { try (LockWrapper wrapper = this.lockWrapper.acquireWriteLock()) { UntouchableMutableSet<T> untouchableSet = this.asWriteUntouchable(); procedure.value(untouchableSet); untouchableSet.becomeUseless(); } } @Override public MutableSet<T> asSynchronized() { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return SynchronizedMutableSet.of(this); } } @Override public ImmutableSet<T> toImmutable() { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return Sets.immutable.withAll(this.delegate); } } @Override public MutableSet<T> asUnmodifiable() { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return UnmodifiableMutableSet.of(this); } } @Override public MutableSet<T> clone() { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return new MultiReaderUnifiedSet<>(this.delegate.clone()); } } @Override public <V> MutableSet<V> collect(Function<? super T, ? extends V> function) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collect(function); } } @Override public MutableBooleanSet collectBoolean(BooleanFunction<? super T> booleanFunction) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectBoolean(booleanFunction); } } @Override public MutableByteSet collectByte(ByteFunction<? super T> byteFunction) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectByte(byteFunction); } } @Override public MutableCharSet collectChar(CharFunction<? super T> charFunction) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectChar(charFunction); } } @Override public MutableDoubleSet collectDouble(DoubleFunction<? super T> doubleFunction) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectDouble(doubleFunction); } } @Override public MutableFloatSet collectFloat(FloatFunction<? super T> floatFunction) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectFloat(floatFunction); } } @Override public MutableIntSet collectInt(IntFunction<? super T> intFunction) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectInt(intFunction); } } @Override public MutableLongSet collectLong(LongFunction<? super T> longFunction) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectLong(longFunction); } } @Override public MutableShortSet collectShort(ShortFunction<? super T> shortFunction) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectShort(shortFunction); } } @Override public <V> MutableSet<V> flatCollect(Function<? super T, ? extends Iterable<V>> function) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.flatCollect(function); } } @Override public <V> MutableSet<V> collectIf( Predicate<? super T> predicate, Function<? super T, ? extends V> function) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectIf(predicate, function); } } @Override public <P, V> MutableSet<V> collectWith( Function2<? super T, ? super P, ? extends V> function, P parameter) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.collectWith(function, parameter); } } @Override public MutableSet<T> newEmpty() { return MultiReaderUnifiedSet.newSet(); } @Override public MutableSet<T> reject(Predicate<? super T> predicate) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.reject(predicate); } } @Override public <P> MutableSet<T> rejectWith( Predicate2<? super T, ? super P> predicate, P parameter) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.rejectWith(predicate, parameter); } } @Override public MutableSet<T> tap(Procedure<? super T> procedure) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { this.forEach(procedure); return this; } } @Override public MutableSet<T> select(Predicate<? super T> predicate) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.select(predicate); } } @Override public <P> MutableSet<T> selectWith( Predicate2<? super T, ? super P> predicate, P parameter) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.selectWith(predicate, parameter); } } @Override public PartitionMutableSet<T> partition(Predicate<? super T> predicate) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.partition(predicate); } } @Override public <P> PartitionMutableSet<T> partitionWith(Predicate2<? super T, ? super P> predicate, P parameter) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.partitionWith(predicate, parameter); } } @Override public <S> MutableSet<S> selectInstancesOf(Class<S> clazz) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.selectInstancesOf(clazz); } } @Override public MutableSet<T> with(T element) { this.add(element); return this; } @Override public MutableSet<T> without(T element) { this.remove(element); return this; } @Override public MutableSet<T> withAll(Iterable<? extends T> elements) { this.addAllIterable(elements); return this; } @Override public MutableSet<T> withoutAll(Iterable<? extends T> elements) { this.removeAllIterable(elements); return this; } @Override public boolean equals(Object o) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.equals(o); } } @Override public int hashCode() { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.hashCode(); } } @Override public void writeExternal(ObjectOutput out) throws IOException { out.writeObject(this.delegate); } @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { this.delegate = (MutableSet<T>) in.readObject(); this.lock = new ReentrantReadWriteLock(); this.lockWrapper = new ReadWriteLockWrapper(this.lock); } // Exposed for testing static final class UntouchableMutableSet<T> extends UntouchableMutableCollection<T> implements MutableSet<T> { private final MutableList<UntouchableIterator<T>> requestedIterators = mList(); private UntouchableMutableSet(MutableSet<T> newDelegate) { this.delegate = newDelegate; } public void becomeUseless() { this.delegate = null; this.requestedIterators.each(UntouchableIterator::becomeUseless); }
This must be implemented this way to guarantee a reference to the delegate doesn't escape.
/** * This must be implemented this way to guarantee a reference to the delegate doesn't escape. */
@Override public MutableSet<T> with(T element) { this.add(element); return this; } @Override public MutableSet<T> without(T element) { this.remove(element); return this; } @Override public MutableSet<T> withAll(Iterable<? extends T> elements) { this.addAllIterable(elements); return this; } @Override public MutableSet<T> withoutAll(Iterable<? extends T> elements) { this.removeAllIterable(elements); return this; } @Override public MutableSet<T> asSynchronized() { throw new UnsupportedOperationException("Cannot call asSynchronized() on " + this.getClass().getSimpleName()); } @Override public MutableSet<T> asUnmodifiable() { throw new UnsupportedOperationException("Cannot call asUnmodifiable() on " + this.getClass().getSimpleName()); } @Override public ImmutableSet<T> toImmutable() { return Sets.immutable.withAll(this.getDelegate()); } @Override public LazyIterable<T> asLazy() { return LazyIterate.adapt(this); } @Override public MutableSet<T> clone() { return this.getDelegate().clone(); } @Override public <V> MutableSet<V> collect(Function<? super T, ? extends V> function) { return this.getDelegate().collect(function); } @Override public MutableBooleanSet collectBoolean(BooleanFunction<? super T> booleanFunction) { return this.getDelegate().collectBoolean(booleanFunction); } @Override public <R extends MutableBooleanCollection> R collectBoolean(BooleanFunction<? super T> booleanFunction, R target) { return this.getDelegate().collectBoolean(booleanFunction, target); } @Override public MutableByteSet collectByte(ByteFunction<? super T> byteFunction) { return this.getDelegate().collectByte(byteFunction); } @Override public <R extends MutableByteCollection> R collectByte(ByteFunction<? super T> byteFunction, R target) { return this.getDelegate().collectByte(byteFunction, target); } @Override public MutableCharSet collectChar(CharFunction<? super T> charFunction) { return this.getDelegate().collectChar(charFunction); } @Override public <R extends MutableCharCollection> R collectChar(CharFunction<? super T> charFunction, R target) { return this.getDelegate().collectChar(charFunction, target); } @Override public MutableDoubleSet collectDouble(DoubleFunction<? super T> doubleFunction) { return this.getDelegate().collectDouble(doubleFunction); } @Override public <R extends MutableDoubleCollection> R collectDouble(DoubleFunction<? super T> doubleFunction, R target) { return this.getDelegate().collectDouble(doubleFunction, target); } @Override public MutableFloatSet collectFloat(FloatFunction<? super T> floatFunction) { return this.getDelegate().collectFloat(floatFunction); } @Override public <R extends MutableFloatCollection> R collectFloat(FloatFunction<? super T> floatFunction, R target) { return this.getDelegate().collectFloat(floatFunction, target); } @Override public MutableIntSet collectInt(IntFunction<? super T> intFunction) { return this.getDelegate().collectInt(intFunction); } @Override public <R extends MutableIntCollection> R collectInt(IntFunction<? super T> intFunction, R target) { return this.getDelegate().collectInt(intFunction, target); } @Override public MutableLongSet collectLong(LongFunction<? super T> longFunction) { return this.getDelegate().collectLong(longFunction); } @Override public <R extends MutableLongCollection> R collectLong(LongFunction<? super T> longFunction, R target) { return this.getDelegate().collectLong(longFunction, target); } @Override public MutableShortSet collectShort(ShortFunction<? super T> shortFunction) { return this.getDelegate().collectShort(shortFunction); } @Override public <R extends MutableShortCollection> R collectShort(ShortFunction<? super T> shortFunction, R target) { return this.getDelegate().collectShort(shortFunction, target); } @Override public <V> MutableSet<V> flatCollect(Function<? super T, ? extends Iterable<V>> function) { return this.getDelegate().flatCollect(function); } @Override public <V> MutableSet<V> collectIf( Predicate<? super T> predicate, Function<? super T, ? extends V> function) { return this.getDelegate().collectIf(predicate, function); } @Override public <P, V> MutableSet<V> collectWith( Function2<? super T, ? super P, ? extends V> function, P parameter) { return this.getDelegate().collectWith(function, parameter); } @Override public <V> MutableSetMultimap<V, T> groupBy( Function<? super T, ? extends V> function) { return this.getDelegate().groupBy(function); } @Override public <V> MutableSetMultimap<V, T> groupByEach( Function<? super T, ? extends Iterable<V>> function) { return this.getDelegate().groupByEach(function); } @Override public <V> MutableMap<V, T> groupByUniqueKey(Function<? super T, ? extends V> function) { return this.getDelegate().groupByUniqueKey(function); } @Override public MutableSet<T> newEmpty() { return this.getDelegate().newEmpty(); } @Override public MutableSet<T> reject(Predicate<? super T> predicate) { return this.getDelegate().reject(predicate); } @Override public <P> MutableSet<T> rejectWith( Predicate2<? super T, ? super P> predicate, P parameter) { return this.getDelegate().rejectWith(predicate, parameter); } @Override public MutableSet<T> tap(Procedure<? super T> procedure) { this.forEach(procedure); return this; } @Override public MutableSet<T> select(Predicate<? super T> predicate) { return this.getDelegate().select(predicate); } @Override public <P> MutableSet<T> selectWith( Predicate2<? super T, ? super P> predicate, P parameter) { return this.getDelegate().selectWith(predicate, parameter); } @Override public PartitionMutableSet<T> partition(Predicate<? super T> predicate) { return this.getDelegate().partition(predicate); } @Override public <P> PartitionMutableSet<T> partitionWith(Predicate2<? super T, ? super P> predicate, P parameter) { return this.getDelegate().partitionWith(predicate, parameter); } @Override public <S> MutableSet<S> selectInstancesOf(Class<S> clazz) { return this.getDelegate().selectInstancesOf(clazz); } @Override public Iterator<T> iterator() { UntouchableIterator<T> iterator = new UntouchableIterator<>(this.delegate.iterator()); this.requestedIterators.add(iterator); return iterator; }
Deprecated:in 6.0. Use OrderedIterable.zip(Iterable) instead.
/** * @deprecated in 6.0. Use {@link OrderedIterable#zip(Iterable)} instead. */
@Override @Deprecated public <S> MutableSet<Pair<T, S>> zip(Iterable<S> that) { return this.getDelegate().zip(that); }
Deprecated:in 6.0. Use OrderedIterable.zipWithIndex() instead.
/** * @deprecated in 6.0. Use {@link OrderedIterable#zipWithIndex()} instead. */
@Override @Deprecated public MutableSet<Pair<T, Integer>> zipWithIndex() { return this.getDelegate().zipWithIndex(); } @Override public MutableSet<T> union(SetIterable<? extends T> set) { return this.getDelegate().union(set); } @Override public <R extends Set<T>> R unionInto(SetIterable<? extends T> set, R targetSet) { return this.getDelegate().unionInto(set, targetSet); } @Override public MutableSet<T> intersect(SetIterable<? extends T> set) { return this.getDelegate().intersect(set); } @Override public <R extends Set<T>> R intersectInto(SetIterable<? extends T> set, R targetSet) { return this.getDelegate().intersectInto(set, targetSet); } @Override public MutableSet<T> difference(SetIterable<? extends T> subtrahendSet) { return this.getDelegate().difference(subtrahendSet); } @Override public <R extends Set<T>> R differenceInto(SetIterable<? extends T> subtrahendSet, R targetSet) { return this.getDelegate().differenceInto(subtrahendSet, targetSet); } @Override public MutableSet<T> symmetricDifference(SetIterable<? extends T> setB) { return this.getDelegate().symmetricDifference(setB); } @Override public <R extends Set<T>> R symmetricDifferenceInto(SetIterable<? extends T> set, R targetSet) { return this.getDelegate().symmetricDifferenceInto(set, targetSet); } @Override public boolean isSubsetOf(SetIterable<? extends T> candidateSuperset) { return this.getDelegate().isSubsetOf(candidateSuperset); } @Override public boolean isProperSubsetOf(SetIterable<? extends T> candidateSuperset) { return this.getDelegate().isProperSubsetOf(candidateSuperset); } @Override public MutableSet<UnsortedSetIterable<T>> powerSet() { return this.getDelegate().powerSet(); } @Override public <B> LazyIterable<Pair<T, B>> cartesianProduct(SetIterable<B> set) { return this.getDelegate().cartesianProduct(set); } @Override public ParallelUnsortedSetIterable<T> asParallel(ExecutorService executorService, int batchSize) { return this.getDelegate().asParallel(executorService, batchSize); } private MutableSet<T> getDelegate() { return (MutableSet<T>) this.delegate; } } private static final class UntouchableIterator<T> implements Iterator<T> { private Iterator<T> delegate; private UntouchableIterator(Iterator<T> newDelegate) { this.delegate = newDelegate; } @Override public boolean hasNext() { return this.delegate.hasNext(); } @Override public T next() { return this.delegate.next(); } @Override public void remove() { this.delegate.remove(); } public void becomeUseless() { this.delegate = null; } } @Override public <V> MutableSetMultimap<V, T> groupBy(Function<? super T, ? extends V> function) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.groupBy(function); } } @Override public <V> MutableSetMultimap<V, T> groupByEach(Function<? super T, ? extends Iterable<V>> function) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.groupByEach(function); } } @Override public <V> MutableMap<V, T> groupByUniqueKey(Function<? super T, ? extends V> function) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.groupByUniqueKey(function); } }
Deprecated:in 6.0. Use OrderedIterable.zip(Iterable) instead.
/** * @deprecated in 6.0. Use {@link OrderedIterable#zip(Iterable)} instead. */
@Override @Deprecated public <S> MutableSet<Pair<T, S>> zip(Iterable<S> that) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.zip(that); } }
Deprecated:in 6.0. Use OrderedIterable.zipWithIndex() instead.
/** * @deprecated in 6.0. Use {@link OrderedIterable#zipWithIndex()} instead. */
@Override @Deprecated public MutableSet<Pair<T, Integer>> zipWithIndex() { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.zipWithIndex(); } } @Override public RichIterable<RichIterable<T>> chunk(int size) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.chunk(size); } } @Override public MutableSet<T> union(SetIterable<? extends T> set) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.union(set); } } @Override public <R extends Set<T>> R unionInto(SetIterable<? extends T> set, R targetSet) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.unionInto(set, targetSet); } } @Override public MutableSet<T> intersect(SetIterable<? extends T> set) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.intersect(set); } } @Override public <R extends Set<T>> R intersectInto(SetIterable<? extends T> set, R targetSet) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.intersectInto(set, targetSet); } } @Override public MutableSet<T> difference(SetIterable<? extends T> subtrahendSet) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.difference(subtrahendSet); } } @Override public <R extends Set<T>> R differenceInto(SetIterable<? extends T> subtrahendSet, R targetSet) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.differenceInto(subtrahendSet, targetSet); } } @Override public MutableSet<T> symmetricDifference(SetIterable<? extends T> setB) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.symmetricDifference(setB); } } @Override public <R extends Set<T>> R symmetricDifferenceInto(SetIterable<? extends T> set, R targetSet) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.symmetricDifferenceInto(set, targetSet); } } @Override public boolean isSubsetOf(SetIterable<? extends T> candidateSuperset) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.isSubsetOf(candidateSuperset); } } @Override public boolean isProperSubsetOf(SetIterable<? extends T> candidateSuperset) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.isProperSubsetOf(candidateSuperset); } } @Override public MutableSet<UnsortedSetIterable<T>> powerSet() { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.powerSet(); } } @Override public <B> LazyIterable<Pair<T, B>> cartesianProduct(SetIterable<B> set) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return this.delegate.cartesianProduct(set); } } @Override public ParallelUnsortedSetIterable<T> asParallel(ExecutorService executorService, int batchSize) { try (LockWrapper wrapper = this.lockWrapper.acquireReadLock()) { return new MultiReaderParallelUnsortedSetIterable<>(this.delegate.asParallel(executorService, batchSize), this.lock); } } }