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MutableBagIterable.java
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MutableBagIterable.java
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/*
* Copyright (c) 2016 Goldman Sachs.
* 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.api.bag;
import org.eclipse.collections.api.block.function.Function;
import org.eclipse.collections.api.block.predicate.Predicate;
import org.eclipse.collections.api.block.predicate.Predicate2;
import org.eclipse.collections.api.block.predicate.primitive.IntPredicate;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.collection.MutableCollection;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.api.map.MutableMapIterable;
import org.eclipse.collections.api.multimap.bag.MutableBagIterableMultimap;
import org.eclipse.collections.api.partition.bag.PartitionMutableBagIterable;
import org.eclipse.collections.api.set.MutableSetIterable;
import org.eclipse.collections.api.tuple.Pair;
import org.eclipse.collections.api.tuple.primitive.ObjectIntPair;
public interface MutableBagIterable<T> extends Bag<T>, MutableCollection<T>
{
/**
* Add number of {@code occurrences} for an {@code item}. If the {@code item} does not exist, then the {@code item} is added to the bag.
*
* <p>
* For Example:
* <pre>
* MutableBagIterable<String> names = Bags.mutable.of("A", "B", "B");
* Assert.assertEquals(4, names.<b>addOccurrences</b>("A", 3));
* </pre>
*
* @return updated number of occurrences.
* @throws IllegalArgumentException if {@code occurrences} are less than 0.
*/
int addOccurrences(T item, int occurrences);
boolean removeOccurrences(Object item, int occurrences);
boolean setOccurrences(T item, int occurrences);
@Override
MutableBagIterable<T> tap(Procedure<? super T> procedure);
@Override
MutableBagIterable<T> select(Predicate<? super T> predicate);
@Override
<P> MutableBagIterable<T> selectWith(Predicate2<? super T, ? super P> predicate, P parameter);
@Override
MutableBagIterable<T> reject(Predicate<? super T> predicate);
@Override
<P> MutableBagIterable<T> rejectWith(Predicate2<? super T, ? super P> predicate, P parameter);
@Override
PartitionMutableBagIterable<T> partition(Predicate<? super T> predicate);
@Override
<P> PartitionMutableBagIterable<T> partitionWith(Predicate2<? super T, ? super P> predicate, P parameter);
@Override
<S> MutableBagIterable<S> selectInstancesOf(Class<S> clazz);
@Override
<V> MutableBagIterableMultimap<V, T> groupBy(Function<? super T, ? extends V> function);
@Override
<V> MutableBagIterableMultimap<V, T> groupByEach(Function<? super T, ? extends Iterable<V>> function);
@Override
MutableSetIterable<Pair<T, Integer>> zipWithIndex();
@Override
MutableBagIterable<T> selectByOccurrences(IntPredicate predicate);
/**
* @since 9.2
*/
@Override
default MutableBagIterable<T> selectDuplicates()
{
return this.selectByOccurrences(occurrences -> occurrences > 1);
}
/**
* @since 9.2
*/
@Override
default MutableSetIterable<T> selectUnique()
{
throw new UnsupportedOperationException("Adding default implementation so as to not break compatibility");
}
@Override
MutableMapIterable<T, Integer> toMapOfItemToCount();
/**
* @since 6.0
*/
@Override
MutableList<ObjectIntPair<T>> topOccurrences(int count);
/**
* @since 6.0
*/
@Override
MutableList<ObjectIntPair<T>> bottomOccurrences(int count);
@Override
MutableBagIterable<T> with(T element);
@Override
MutableBagIterable<T> without(T element);
@Override
MutableBagIterable<T> withAll(Iterable<? extends T> elements);
@Override
MutableBagIterable<T> withoutAll(Iterable<? extends T> elements);
}