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GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.

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/*
 * Copyright 2015 Goldman Sachs.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.gs.collections.impl.bag.mutable;

import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;

import com.gs.collections.api.bag.ImmutableBag;
import com.gs.collections.api.bag.MutableBag;
import com.gs.collections.api.bag.primitive.MutableBooleanBag;
import com.gs.collections.api.bag.primitive.MutableByteBag;
import com.gs.collections.api.bag.primitive.MutableCharBag;
import com.gs.collections.api.bag.primitive.MutableDoubleBag;
import com.gs.collections.api.bag.primitive.MutableFloatBag;
import com.gs.collections.api.bag.primitive.MutableIntBag;
import com.gs.collections.api.bag.primitive.MutableLongBag;
import com.gs.collections.api.bag.primitive.MutableShortBag;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.function.Function2;
import com.gs.collections.api.block.function.primitive.BooleanFunction;
import com.gs.collections.api.block.function.primitive.ByteFunction;
import com.gs.collections.api.block.function.primitive.CharFunction;
import com.gs.collections.api.block.function.primitive.DoubleFunction;
import com.gs.collections.api.block.function.primitive.FloatFunction;
import com.gs.collections.api.block.function.primitive.IntFunction;
import com.gs.collections.api.block.function.primitive.LongFunction;
import com.gs.collections.api.block.function.primitive.ShortFunction;
import com.gs.collections.api.block.predicate.Predicate;
import com.gs.collections.api.block.predicate.Predicate2;
import com.gs.collections.api.block.predicate.primitive.IntPredicate;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure;
import com.gs.collections.api.list.MutableList;
import com.gs.collections.api.map.MutableMap;
import com.gs.collections.api.multimap.bag.MutableBagMultimap;
import com.gs.collections.api.ordered.OrderedIterable;
import com.gs.collections.api.partition.bag.PartitionMutableBag;
import com.gs.collections.api.set.MutableSet;
import com.gs.collections.api.tuple.Pair;
import com.gs.collections.api.tuple.primitive.ObjectIntPair;
import com.gs.collections.impl.collection.mutable.AbstractSynchronizedMutableCollection;
import com.gs.collections.impl.collection.mutable.SynchronizedCollectionSerializationProxy;
import com.gs.collections.impl.factory.Bags;
import net.jcip.annotations.GuardedBy;

/**
 * A synchronized view of a {@link MutableBag}. It is imperative that the user manually synchronize on the collection when iterating over it using the
 * standard JDK iterator or JDK 5 for loop, as per {@link Collections#synchronizedCollection(Collection)}.
 *
 * @see MutableBag#asSynchronized()
 * @since 1.0
 */
public class SynchronizedBag
        extends AbstractSynchronizedMutableCollection
        implements MutableBag, Serializable
{
    private static final long serialVersionUID = 2L;

    SynchronizedBag(MutableBag bag)
    {
        super(bag);
    }

    public SynchronizedBag(MutableBag bag, Object newLock)
    {
        super(bag, newLock);
    }

    /**
     * This method will take a MutableBag and wrap it directly in a SynchronizedBag.
     */
    public static > SynchronizedBag of(B bag)
    {
        return new SynchronizedBag(bag);
    }

    @Override
    @GuardedBy("getLock()")
    protected MutableBag getDelegate()
    {
        return (MutableBag) super.getDelegate();
    }

    public MutableBag with(T element)
    {
        this.add(element);
        return this;
    }

    public MutableBag without(T element)
    {
        this.remove(element);
        return this;
    }

    public MutableBag withAll(Iterable elements)
    {
        this.addAllIterable(elements);
        return this;
    }

    public MutableBag withoutAll(Iterable elements)
    {
        this.removeAllIterable(elements);
        return this;
    }

    public MutableBag newEmpty()
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().newEmpty().asSynchronized();
        }
    }

    protected Object writeReplace()
    {
        return new SynchronizedCollectionSerializationProxy(this.getDelegate());
    }

    public void addOccurrences(T item, int occurrences)
    {
        synchronized (this.getLock())
        {
            this.getDelegate().addOccurrences(item, occurrences);
        }
    }

    public boolean removeOccurrences(Object item, int occurrences)
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().removeOccurrences(item, occurrences);
        }
    }

    public boolean setOccurrences(T item, int occurrences)
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().setOccurrences(item, occurrences);
        }
    }

    public MutableMap toMapOfItemToCount()
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().toMapOfItemToCount();
        }
    }

    public MutableBag selectByOccurrences(IntPredicate predicate)
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().selectByOccurrences(predicate);
        }
    }

    public MutableList> topOccurrences(int count)
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().topOccurrences(count);
        }
    }

    public MutableList> bottomOccurrences(int count)
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().bottomOccurrences(count);
        }
    }

    public void forEachWithOccurrences(ObjectIntProcedure objectIntProcedure)
    {
        synchronized (this.getLock())
        {
            this.getDelegate().forEachWithOccurrences(objectIntProcedure);
        }
    }

    public int occurrencesOf(Object item)
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().occurrencesOf(item);
        }
    }

    public int sizeDistinct()
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().sizeDistinct();
        }
    }

    public String toStringOfItemToCount()
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().toStringOfItemToCount();
        }
    }

    public MutableBag tap(Procedure procedure)
    {
        synchronized (this.getLock())
        {
            this.forEach(procedure);
            return this;
        }
    }

    public MutableBag select(Predicate predicate)
    {
        synchronized (this.getLock())
        {
            return this.getDelegate().select(predicate);
        }
    }

    public 

MutableBag selectWith(Predicate2 predicate, P parameter) { synchronized (this.getLock()) { return this.getDelegate().selectWith(predicate, parameter); } } public MutableBag reject(Predicate predicate) { synchronized (this.getLock()) { return this.getDelegate().reject(predicate); } } public

MutableBag rejectWith(Predicate2 predicate, P parameter) { synchronized (this.getLock()) { return this.getDelegate().rejectWith(predicate, parameter); } } public PartitionMutableBag partition(Predicate predicate) { synchronized (this.getLock()) { return this.getDelegate().partition(predicate); } } public

PartitionMutableBag partitionWith(Predicate2 predicate, P parameter) { synchronized (this.getLock()) { return this.getDelegate().partitionWith(predicate, parameter); } } public MutableBooleanBag collectBoolean(BooleanFunction booleanFunction) { synchronized (this.getLock()) { return this.getDelegate().collectBoolean(booleanFunction); } } public MutableByteBag collectByte(ByteFunction byteFunction) { synchronized (this.getLock()) { return this.getDelegate().collectByte(byteFunction); } } public MutableCharBag collectChar(CharFunction charFunction) { synchronized (this.getLock()) { return this.getDelegate().collectChar(charFunction); } } public MutableDoubleBag collectDouble(DoubleFunction doubleFunction) { synchronized (this.getLock()) { return this.getDelegate().collectDouble(doubleFunction); } } public MutableFloatBag collectFloat(FloatFunction floatFunction) { synchronized (this.getLock()) { return this.getDelegate().collectFloat(floatFunction); } } public MutableIntBag collectInt(IntFunction function) { synchronized (this.getLock()) { return this.getDelegate().collectInt(function); } } public MutableLongBag collectLong(LongFunction longFunction) { synchronized (this.getLock()) { return this.getDelegate().collectLong(longFunction); } } public MutableShortBag collectShort(ShortFunction shortFunction) { synchronized (this.getLock()) { return this.getDelegate().collectShort(shortFunction); } } public MutableBag selectInstancesOf(Class clazz) { synchronized (this.getLock()) { return this.getDelegate().selectInstancesOf(clazz); } } public MutableBag collect(Function function) { synchronized (this.getLock()) { return this.getDelegate().collect(function); } } /** * @deprecated in 6.0. Use {@link OrderedIterable#zipWithIndex()} instead. */ @Deprecated public MutableSet> zipWithIndex() { synchronized (this.getLock()) { return this.getDelegate().zipWithIndex(); } } public MutableBag collectWith(Function2 function, P parameter) { synchronized (this.getLock()) { return this.getDelegate().collectWith(function, parameter); } } public MutableBag collectIf( Predicate predicate, Function function) { synchronized (this.getLock()) { return this.getDelegate().collectIf(predicate, function); } } public MutableBag flatCollect(Function> function) { synchronized (this.getLock()) { return this.getDelegate().flatCollect(function); } } public MutableBagMultimap groupBy(Function function) { synchronized (this.getLock()) { return this.getDelegate().groupBy(function); } } public MutableBagMultimap groupByEach(Function> function) { synchronized (this.getLock()) { return this.getDelegate().groupByEach(function); } } /** * @deprecated in 6.0. Use {@link OrderedIterable#zip(Iterable)} instead. */ @Deprecated public MutableBag> zip(Iterable that) { synchronized (this.getLock()) { return this.getDelegate().zip(that); } } public MutableBag asUnmodifiable() { synchronized (this.getLock()) { return UnmodifiableBag.of(this); } } public MutableBag asSynchronized() { return this; } public ImmutableBag toImmutable() { return Bags.immutable.withAll(this); } }