Package org.eclipse.collections.impl.collection.mutable

Class AbstractMutableCollection<T>

java.lang.Object

org.eclipse.collections.impl.AbstractRichIterable<T>

org.eclipse.collections.impl.collection.mutable.AbstractMutableCollection<T>

All Implemented Interfaces:

Iterable<T>, Collection<T>, MutableCollection<T>, InternalIterable<T>, RichIterable<T>

Direct Known Subclasses:

AbstractMutableList, AbstractMutableSet, AbstractUnifiedSet, TreeSortedSet

public abstract class AbstractMutableCollection<T>
extends AbstractRichIterable<T>
implements MutableCollection<T>

Constructor Summary

Constructors

Constructor	Description
AbstractMutableCollection()

Method Summary

Modifier and Type	Method	Description
boolean	add(T element)
boolean	addAll(Collection<? extends T> source)
boolean	addAllIterable(Iterable<? extends T> iterable)
RichIterable<RichIterable<T>>	chunk(int size)	Partitions elements in fixed size chunks.
<V> MutableBag<V>	countBy(Function<? super T,? extends V> function)	This method will count the number of occurrences of each value calculated by applying the function to each element of the collection.
<V> MutableBag<V>	countByEach(Function<? super T,? extends Iterable<V>> function)	This method will count the number of occurrences of each value calculated by applying the function to each element of the collection.
<V, P> MutableBag<V>	countByWith(Function2<? super T,? super P,? extends V> function, P parameter)	This method will count the number of occurrences of each value calculated by applying the function to each element of the collection with the specified parameter as the second argument.
<V> MutableMap<V,T>	groupByUniqueKey(Function<? super T,? extends V> function)	For each element of the iterable, the function is evaluated, and the results of these evaluations are collected into a new map, where the transformed value is the key.
<IV, P> IV	injectIntoWith(IV injectValue, Function3<? super IV,? super T,? super P,? extends IV> function, P parameter)	Returns the final result of evaluating function using each element of the iterable, the previous evaluation result and the parameters.
Optional<T>	reduce(BinaryOperator<T> accumulator)	This method produces the equivalent result as Stream.reduce(BinaryOperator).
boolean	remove(Object o)
boolean	removeAll(Collection<?> source)
boolean	removeAllIterable(Iterable<?> iterable)
boolean	removeIf(Predicate<? super T> predicate)	Removes all elements in the collection that evaluate to true for the specified predicate.
<P> boolean	removeIfWith(Predicate2<? super T,? super P> predicate, P parameter)	Removes all elements in the collection that evaluate to true for the specified predicate2 and parameter.
boolean	retainAll(Collection<?> source)
boolean	retainAllIterable(Iterable<?> iterable)
<P> Twin<MutableList<T>>	selectAndRejectWith(Predicate2<? super T,? super P> predicate, P parameter)	Filters a collection into two separate collections based on a predicate returned via a Pair.
<V> MutableObjectDoubleMap<V>	sumByDouble(Function<? super T,? extends V> groupBy, DoubleFunction<? super T> function)	Groups and sums the values using the two specified functions.
<V> MutableObjectDoubleMap<V>	sumByFloat(Function<? super T,? extends V> groupBy, FloatFunction<? super T> function)	Groups and sums the values using the two specified functions.
<V> MutableObjectLongMap<V>	sumByInt(Function<? super T,? extends V> groupBy, IntFunction<? super T> function)	Groups and sums the values using the two specified functions.
<V> MutableObjectLongMap<V>	sumByLong(Function<? super T,? extends V> groupBy, LongFunction<? super T> function)	Groups and sums the values using the two specified functions.

Methods inherited from class org.eclipse.collections.impl.AbstractRichIterable

allSatisfy, allSatisfyWith, anySatisfy, anySatisfyWith, appendString, appendString, asLazy, collect, collectIf, collectWith, contains, containsAll, containsAllArguments, containsAllIterable, count, countWith, detect, detectOptional, detectWith, detectWithIfNone, detectWithOptional, flatCollect, forEach, forEachWith, forEachWithIndex, groupBy, groupByEach, groupByUniqueKey, injectInto, injectInto, injectInto, injectInto, injectInto, into, isEmpty, max, max, maxBy, min, min, minBy, noneSatisfy, noneSatisfyWith, reject, rejectWith, select, selectWith, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, toArray, toArray, toBag, toBiMap, toList, toMap, toSet, toSortedBag, toSortedBag, toSortedBagBy, toSortedListBy, toSortedMap, toSortedMap, toSortedMapBy, toSortedSet, toSortedSet, toSortedSetBy, toString, zip, zipWithIndex

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

clear, contains, containsAll, equals, hashCode, isEmpty, iterator, parallelStream, removeIf, size, spliterator, stream, toArray, toArray, toArray

Methods inherited from interface org.eclipse.collections.api.InternalIterable

forEach, forEachWith, forEachWithIndex

Methods inherited from interface org.eclipse.collections.api.collection.MutableCollection

aggregateBy, aggregateInPlaceBy, asSynchronized, asUnmodifiable, collect, collectBoolean, collectByte, collectChar, collectDouble, collectFloat, collectIf, collectInt, collectLong, collectShort, collectWith, flatCollect, flatCollectWith, groupBy, groupByEach, newEmpty, partition, partitionWith, reject, rejectWith, select, selectInstancesOf, selectWith, tap, toImmutable, with, withAll, without, withoutAll, zip, zipWithIndex

Methods inherited from interface org.eclipse.collections.api.RichIterable

aggregateBy, allSatisfy, allSatisfyWith, anySatisfy, anySatisfyWith, appendString, appendString, appendString, asLazy, collect, collectBoolean, collectByte, collectChar, collectDouble, collectFloat, collectIf, collectInt, collectLong, collectShort, collectWith, contains, containsAll, containsAllArguments, containsAllIterable, containsAny, containsAnyIterable, containsBy, containsNone, containsNoneIterable, count, countBy, countByEach, countByWith, countWith, detect, detectIfNone, detectOptional, detectWith, detectWithIfNone, detectWithOptional, each, flatCollect, flatCollectBoolean, flatCollectByte, flatCollectChar, flatCollectDouble, flatCollectFloat, flatCollectInt, flatCollectLong, flatCollectShort, flatCollectWith, forEach, getAny, getFirst, getLast, getOnly, groupBy, groupByAndCollect, groupByEach, groupByUniqueKey, injectInto, injectInto, injectInto, injectInto, injectInto, injectIntoDouble, injectIntoFloat, injectIntoInt, injectIntoLong, into, isEmpty, makeString, makeString, makeString, makeString, max, max, maxBy, maxByOptional, maxOptional, maxOptional, min, min, minBy, minByOptional, minOptional, minOptional, noneSatisfy, noneSatisfyWith, notEmpty, reduceInPlace, reduceInPlace, reject, rejectWith, select, selectWith, size, summarizeDouble, summarizeFloat, summarizeInt, summarizeLong, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, toArray, toArray, toBag, toBiMap, toImmutableBag, toImmutableBiMap, toImmutableList, toImmutableMap, toImmutableSet, toImmutableSortedBag, toImmutableSortedBag, toImmutableSortedBagBy, toImmutableSortedList, toImmutableSortedList, toImmutableSortedListBy, toImmutableSortedSet, toImmutableSortedSet, toImmutableSortedSetBy, toList, toMap, toMap, toSet, toSortedBag, toSortedBag, toSortedBagBy, toSortedList, toSortedList, toSortedListBy, toSortedMap, toSortedMap, toSortedMapBy, toSortedSet, toSortedSet, toSortedSetBy, toString, zip, zipWithIndex

Constructor Details

AbstractMutableCollection

public AbstractMutableCollection()

Method Details

selectAndRejectWith

public <P> Twin<MutableList<T>> selectAndRejectWith(Predicate2<? super T,? super P> predicate,
 P parameter)

Description copied from interface: MutableCollection

Filters a collection into two separate collections based on a predicate returned via a Pair.

e.g.
 return lastNames.selectAndRejectWith(Predicates2.lessThan(), "Mason");
 

Specified by:

selectAndRejectWith in interface MutableCollection<T>

removeIf

public boolean removeIf(Predicate<? super T> predicate)

Description copied from interface: MutableCollection

Removes all elements in the collection that evaluate to true for the specified predicate.

e.g.
 return lastNames.removeIf(Predicates.isNull());
 

Specified by:

removeIf in interface MutableCollection<T>

removeIfWith

public <P> boolean removeIfWith(Predicate2<? super T,? super P> predicate,
 P parameter)

Description copied from interface: MutableCollection

Removes all elements in the collection that evaluate to true for the specified predicate2 and parameter.

 return lastNames.removeIfWith(Predicates2.isNull(), null);
 

Specified by:

removeIfWith in interface MutableCollection<T>

injectIntoWith

public <IV,
P> IV injectIntoWith(IV injectValue,
 Function3<? super IV,? super T,? super P,? extends IV> function,
 P parameter)

Description copied from interface: MutableCollection

Returns the final result of evaluating function using each element of the iterable, the previous evaluation result and the parameters. The injected value is used for the first parameter of the first evaluation, and the current item in the iterable is used as the second parameter. The parameter value is always used as the third parameter to the function call.

Specified by:

injectIntoWith in interface MutableCollection<T>

See Also:

• RichIterable.injectInto(Object, Function2)

reduce

public Optional<T> reduce(BinaryOperator<T> accumulator)

Description copied from interface: RichIterable

This method produces the equivalent result as Stream.reduce(BinaryOperator).

Specified by:

reduce in interface RichIterable<T>

addAllIterable

public boolean addAllIterable(Iterable<? extends T> iterable)

Specified by:

addAllIterable in interface MutableCollection<T>

See Also:

• Collection.addAll(Collection)

removeAllIterable

public boolean removeAllIterable(Iterable<?> iterable)

Specified by:

removeAllIterable in interface MutableCollection<T>

See Also:

• Collection.removeAll(Collection)

retainAllIterable

public boolean retainAllIterable(Iterable<?> iterable)

Specified by:

retainAllIterable in interface MutableCollection<T>

See Also:

• Collection.retainAll(Collection)

chunk

public RichIterable<RichIterable<T>> chunk(int size)

Description copied from interface: RichIterable

Partitions elements in fixed size chunks.

Specified by:

chunk in interface RichIterable<T>

Parameters:

size - the number of elements per chunk

Returns:

A RichIterable containing RichIterables of size size, except the last will be truncated if the elements don't divide evenly.

sumByInt

public <V> MutableObjectLongMap<V> sumByInt(Function<? super T,? extends V> groupBy,
 IntFunction<? super T> function)

Description copied from interface: RichIterable

Groups and sums the values using the two specified functions.

Specified by:

sumByInt in interface MutableCollection<T>

Specified by:

sumByInt in interface RichIterable<T>

sumByFloat

public <V> MutableObjectDoubleMap<V> sumByFloat(Function<? super T,? extends V> groupBy,
 FloatFunction<? super T> function)

Description copied from interface: RichIterable

Groups and sums the values using the two specified functions.

Specified by:

sumByFloat in interface MutableCollection<T>

Specified by:

sumByFloat in interface RichIterable<T>

sumByLong

public <V> MutableObjectLongMap<V> sumByLong(Function<? super T,? extends V> groupBy,
 LongFunction<? super T> function)

Description copied from interface: RichIterable

Groups and sums the values using the two specified functions.

Specified by:

sumByLong in interface MutableCollection<T>

Specified by:

sumByLong in interface RichIterable<T>

sumByDouble

public <V> MutableObjectDoubleMap<V> sumByDouble(Function<? super T,? extends V> groupBy,
 DoubleFunction<? super T> function)

Description copied from interface: RichIterable

Groups and sums the values using the two specified functions.

Specified by:

sumByDouble in interface MutableCollection<T>

Specified by:

sumByDouble in interface RichIterable<T>

add

public boolean add(T element)

Specified by:

add in interface Collection<T>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<T>

addAll

public boolean addAll(Collection<? extends T> source)

Specified by:

addAll in interface Collection<T>

removeAll

public boolean removeAll(Collection<?> source)

Specified by:

removeAll in interface Collection<T>

retainAll

public boolean retainAll(Collection<?> source)

Specified by:

retainAll in interface Collection<T>

groupByUniqueKey

public <V> MutableMap<V,T> groupByUniqueKey(Function<? super T,? extends V> function)

Description copied from interface: RichIterable

For each element of the iterable, the function is evaluated, and the results of these evaluations are collected into a new map, where the transformed value is the key. The generated keys must each be unique, or else an exception is thrown.

Specified by:

groupByUniqueKey in interface MutableCollection<T>

Specified by:

groupByUniqueKey in interface RichIterable<T>

See Also:

• RichIterable.groupBy(Function)

countBy

public <V> MutableBag<V> countBy(Function<? super T,? extends V> function)

Description copied from interface: RichIterable

This method will count the number of occurrences of each value calculated by applying the function to each element of the collection.

Specified by:

countBy in interface MutableCollection<T>

Specified by:

countBy in interface RichIterable<T>

Since:

9.0

countByWith

public <V,
P> MutableBag<V> countByWith(Function2<? super T,? super P,? extends V> function,
 P parameter)

Description copied from interface: RichIterable

This method will count the number of occurrences of each value calculated by applying the function to each element of the collection with the specified parameter as the second argument.

Specified by:

countByWith in interface MutableCollection<T>

Specified by:

countByWith in interface RichIterable<T>

Since:

9.0

countByEach

public <V> MutableBag<V> countByEach(Function<? super T,? extends Iterable<V>> function)

Description copied from interface: RichIterable

This method will count the number of occurrences of each value calculated by applying the function to each element of the collection.

Specified by:

countByEach in interface MutableCollection<T>

Specified by:

countByEach in interface RichIterable<T>

Overrides:

countByEach in class AbstractRichIterable<T>

Since:

10.0.0