Class AbstractImmutableBag<T>

java.lang.Object

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

org.eclipse.collections.impl.bag.AbstractBag<T>

org.eclipse.collections.impl.bag.immutable.AbstractImmutableBagIterable<T>

org.eclipse.collections.impl.bag.immutable.AbstractImmutableBag<T>

All Implemented Interfaces:

Iterable<T>, Collection<T>, Bag<T>, ImmutableBag<T>, ImmutableBagIterable<T>, UnsortedBag<T>, ImmutableCollection<T>, InternalIterable<T>, RichIterable<T>

Direct Known Subclasses:

ImmutableArrayBag, ImmutableEmptyBag, ImmutableHashBag, ImmutableSingletonBag

public abstract class AbstractImmutableBag<T>
extends AbstractImmutableBagIterable<T>
implements ImmutableBag<T>

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
AbstractImmutableBag()

Method Summary

Modifier and Type	Method	Description
ImmutableList<ObjectIntPair<T>>	bottomOccurrences(int n)	Returns the count least frequently occurring items.
RichIterable<RichIterable<T>>	chunk(int size)	Partitions elements in fixed size chunks.
ImmutableBooleanBag	collectBoolean(BooleanFunction<? super T> booleanFunction)	Returns a new primitive boolean iterable with the results of applying the specified function on each element of the source collection.
ImmutableByteBag	collectByte(ByteFunction<? super T> byteFunction)	Returns a new primitive byte iterable with the results of applying the specified function on each element of the source collection.
ImmutableCharBag	collectChar(CharFunction<? super T> charFunction)	Returns a new primitive char iterable with the results of applying the specified function on each element of the source collection.
ImmutableDoubleBag	collectDouble(DoubleFunction<? super T> doubleFunction)	Returns a new primitive double iterable with the results of applying the specified function on each element of the source collection.
ImmutableFloatBag	collectFloat(FloatFunction<? super T> floatFunction)	Returns a new primitive float iterable with the results of applying the specified function on each element of the source collection.
ImmutableIntBag	collectInt(IntFunction<? super T> intFunction)	Returns a new primitive int iterable with the results of applying the specified function on each element of the source collection.
ImmutableLongBag	collectLong(LongFunction<? super T> longFunction)	Returns a new primitive long iterable with the results of applying the specified function on each element of the source collection.
ImmutableShortBag	collectShort(ShortFunction<? super T> shortFunction)	Returns a new primitive short iterable with the results of applying the specified function on each element of the source collection.
<P,V> ImmutableBag<V>	collectWith(Function2<? super T, ? super P, ? extends V> function, P parameter)	Same as RichIterable.collect(Function) with a Function2 and specified parameter which is passed to the block.
<V> ImmutableBag<V>	collectWithOccurrences(ObjectIntToObjectFunction<? super T, ? extends V> function)	Iterates over the unique elements and their occurrences and collects the results of applying the specified function.
<V> ImmutableBag<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> ImmutableBag<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> ImmutableBag<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> ImmutableMap<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.
ImmutableBag<T>	newWithoutAll(Iterable<? extends T> elements)	This method is similar to the withoutAll method in MutableCollection with the difference that a new copy of this collection with the elements removed will be returned.
PartitionImmutableBag<T>	partition(Predicate<? super T> predicate)	Filters a collection into a PartitionedIterable based on the evaluation of the predicate.
<P> PartitionImmutableBag<T>	partitionWith(Predicate2<? super T, ? super P> predicate, P parameter)	Filters a collection into a PartitionIterable based on the evaluation of the predicate.
<P> ImmutableBag<T>	rejectWith(Predicate2<? super T, ? super P> predicate, P parameter)	Similar to RichIterable.reject(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.
<P> ImmutableBag<T>	selectWith(Predicate2<? super T, ? super P> predicate, P parameter)	Similar to RichIterable.select(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.
ImmutableBag<T>	tap(Procedure<? super T> procedure)	Executes the Procedure for each element in the iterable and returns this.
ImmutableBag<T>	toImmutable()
ImmutableList<ObjectIntPair<T>>	topOccurrences(int n)	Returns the count most frequently occurring items.

Methods inherited from class AbstractImmutableBagIterable

add, addAll, castToCollection, clear, parallelStream, remove, removeAll, removeAllFrom, retainAll, shortCircuit, spliterator, stream, sumByDouble, sumByFloat, sumByInt, sumByLong

Methods inherited from class AbstractBag

collect, collectBoolean, collectByte, collectChar, collectDouble, collectFloat, collectIf, collectInt, collectLong, collectShort, collectWith, count, flatCollect, flatCollectBoolean, flatCollectByte, flatCollectChar, flatCollectDouble, flatCollectFloat, flatCollectInt, flatCollectLong, flatCollectShort, groupBy, groupByEach, injectInto, injectInto, injectInto, injectInto, injectInto, injectIntoWith, occurrencesSortingBy, reject, rejectWith, select, selectWith, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, toArray, toArray, toBag, toList, toListWithOccurrences, toSet, toSortedBag, toSortedBag, toSortedList, toSortedSet, toSortedSet, toStringOfItemToCount

Methods inherited from class AbstractRichIterable

allSatisfy, allSatisfyWith, anySatisfy, anySatisfyWith, appendString, appendString, asLazy, contains, containsAll, containsAllArguments, containsAllIterable, countWith, detect, detectOptional, detectWith, detectWithIfNone, detectWithOptional, forEach, forEachWith, forEachWithIndex, groupByUniqueKey, into, isEmpty, max, max, maxBy, min, min, minBy, noneSatisfy, noneSatisfyWith, toBiMap, toMap, toSortedBagBy, toSortedListBy, toSortedMap, toSortedMap, toSortedMapBy, toSortedSetBy, toString, zip, zipWithIndex

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface Bag

aggregateBy, allSatisfyWithOccurrences, anySatisfyWithOccurrences, collectWithOccurrences, detectWithOccurrences, distinctView, equals, forEachWithOccurrences, hashCode, noneSatisfyWithOccurrences, occurrencesOf, reduceBy, reduceInPlace, reduceInPlace, sizeDistinct, summarizeDouble, summarizeFloat, summarizeInt, summarizeLong, toStringOfItemToCount

Methods inherited from interface Collection

contains, containsAll, equals, hashCode, isEmpty, iterator, removeIf, size, toArray

Methods inherited from interface ImmutableBag

collect, collectIf, flatCollect, flatCollectWith, groupBy, groupByEach, newWith, newWithAll, newWithout, reject, select, selectByOccurrences, selectDuplicates, selectInstancesOf, selectUnique, toImmutableBag, zip, zipWithIndex

Methods inherited from interface ImmutableBagIterable

groupBy, groupByEach, reject, select, selectByOccurrences, selectDuplicates, selectInstancesOf, selectUnique, toMapOfItemToCount, zipWithIndex

Methods inherited from interface ImmutableCollection

aggregateBy, aggregateInPlaceBy, castToCollection, collect, collectIf, flatCollect, flatCollectWith, parallelStream, reduceBy, spliterator, stream, sumByDouble, sumByFloat, sumByInt, sumByLong, zip

Methods inherited from interface InternalIterable

forEach, forEachWith, forEachWithIndex

Methods inherited from interface RichIterable

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, reduce, reject, rejectWith, select, selectWith, size, sumOfDouble, sumOfFloat, sumOfInt, sumOfLong, toArray, toArray, toBag, toBiMap, 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

AbstractImmutableBag

public AbstractImmutableBag()

Method Details

newWithoutAll

public ImmutableBag<T> newWithoutAll(Iterable<? extends T> elements)

Description copied from interface: ImmutableCollection

This method is similar to the withoutAll method in MutableCollection with the difference that a new copy of this collection with the elements removed will be returned.

Specified by:

newWithoutAll in interface ImmutableBag<T>

Specified by:

newWithoutAll in interface ImmutableCollection<T>

toImmutable

public ImmutableBag<T> toImmutable()

Specified by:

toImmutable in interface Bag<T>

tap

public ImmutableBag<T> tap(Procedure<? super T> procedure)

Description copied from interface: RichIterable

Executes the Procedure for each element in the iterable and returns this.

Example using a Java 8 lambda expression:

RichIterable<Person> tapped =
    people.tap(person -> LOGGER.info(person.getName()));

Specified by:

tap in interface Bag<T>

Specified by:

tap in interface ImmutableBag<T>

Specified by:

tap in interface ImmutableBagIterable<T>

Specified by:

tap in interface ImmutableCollection<T>

Specified by:

tap in interface RichIterable<T>

Specified by:

tap in interface UnsortedBag<T>

See Also:

• RichIterable.each(Procedure)
• RichIterable.forEach(Procedure)

selectWith

public <P> ImmutableBag<T> selectWith(Predicate2<? super T, ? super P> predicate,
 P parameter)

Description copied from interface: RichIterable

Similar to RichIterable.select(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.

E.g. return a Collection of Person elements where the person has an age greater than or equal to 18 years

Example using a Java 8 lambda expression:

RichIterable<Person> selected =
    people.selectWith((Person person, Integer age) -> person.getAge()>= age, Integer.valueOf(18));

Specified by:

selectWith in interface Bag<T>

Specified by:

selectWith in interface ImmutableBag<T>

Specified by:

selectWith in interface ImmutableBagIterable<T>

Specified by:

selectWith in interface ImmutableCollection<T>

Specified by:

selectWith in interface RichIterable<T>

Specified by:

selectWith in interface UnsortedBag<T>

Parameters:

predicate - a Predicate2 to use as the select criteria

parameter - a parameter to pass in for evaluation of the second argument P in predicate

See Also:

• RichIterable.select(Predicate)

rejectWith

public <P> ImmutableBag<T> rejectWith(Predicate2<? super T, ? super P> predicate,
 P parameter)

Description copied from interface: RichIterable

Similar to RichIterable.reject(Predicate), except with an evaluation parameter for the second generic argument in Predicate2.

E.g. return a Collection of Person elements where the person has an age greater than or equal to 18 years

Example using a Java 8 lambda expression:

RichIterable<Person> rejected =
    people.rejectWith((Person person, Integer age) -> person.getAge() < age, Integer.valueOf(18));

Specified by:

rejectWith in interface Bag<T>

Specified by:

rejectWith in interface ImmutableBag<T>

Specified by:

rejectWith in interface ImmutableBagIterable<T>

Specified by:

rejectWith in interface ImmutableCollection<T>

Specified by:

rejectWith in interface RichIterable<T>

Specified by:

rejectWith in interface UnsortedBag<T>

Parameters:

predicate - a Predicate2 to use as the select criteria

parameter - a parameter to pass in for evaluation of the second argument P in predicate

See Also:

• RichIterable.select(Predicate)

partition

public PartitionImmutableBag<T> partition(Predicate<? super T> predicate)

Description copied from interface: RichIterable

Filters a collection into a PartitionedIterable based on the evaluation of the predicate.

Example using a Java 8 lambda expression:

PartitionIterable<Person> newYorkersAndNonNewYorkers =
    people.partition(person -> person.getAddress().getState().getName().equals("New York"));

Specified by:

partition in interface Bag<T>

Specified by:

partition in interface ImmutableBag<T>

Specified by:

partition in interface ImmutableBagIterable<T>

Specified by:

partition in interface ImmutableCollection<T>

Specified by:

partition in interface RichIterable<T>

Specified by:

partition in interface UnsortedBag<T>

partitionWith

public <P> PartitionImmutableBag<T> partitionWith(Predicate2<? super T, ? super P> predicate,
 P parameter)

Description copied from interface: RichIterable

Filters a collection into a PartitionIterable based on the evaluation of the predicate.

Example using a Java 8 lambda expression:

PartitionIterable<Person> newYorkersAndNonNewYorkers =
    people.partitionWith((Person person, String state) -> person.getAddress().getState().getName().equals(state), "New York");

Specified by:

partitionWith in interface Bag<T>

Specified by:

partitionWith in interface ImmutableBag<T>

Specified by:

partitionWith in interface ImmutableBagIterable<T>

Specified by:

partitionWith in interface ImmutableCollection<T>

Specified by:

partitionWith in interface RichIterable<T>

countBy

public <V> ImmutableBag<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 ImmutableBag<T>

Specified by:

countBy in interface ImmutableCollection<T>

Specified by:

countBy in interface RichIterable<T>

Overrides:

countBy in class AbstractImmutableBagIterable<T>

Since:

9.0

countByWith

public <V,P> ImmutableBag<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 ImmutableBag<T>

Specified by:

countByWith in interface ImmutableCollection<T>

Specified by:

countByWith in interface RichIterable<T>

Overrides:

countByWith in class AbstractImmutableBagIterable<T>

Since:

9.0

countByEach

public <V> ImmutableBag<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 ImmutableBag<T>

Specified by:

countByEach in interface ImmutableCollection<T>

Specified by:

countByEach in interface RichIterable<T>

Overrides:

countByEach in class AbstractImmutableBagIterable<T>

Since:

10.0.0

collectWithOccurrences

public <V> ImmutableBag<V> collectWithOccurrences(ObjectIntToObjectFunction<? super T, ? extends V> function)

Description copied from interface: Bag

Iterates over the unique elements and their occurrences and collects the results of applying the specified function.

Specified by:

collectWithOccurrences in interface Bag<T>

Specified by:

collectWithOccurrences in interface ImmutableBag<T>

Specified by:

collectWithOccurrences in interface ImmutableBagIterable<T>

Specified by:

collectWithOccurrences in interface UnsortedBag<T>

collectWith

public <P,V> ImmutableBag<V> collectWith(Function2<? super T, ? super P, ? extends V> function,
 P parameter)

Description copied from interface: RichIterable

Same as RichIterable.collect(Function) with a Function2 and specified parameter which is passed to the block.

Example using a Java 8 lambda expression:

RichIterable<Integer> integers =
    Lists.mutable.with(1, 2, 3).collectWith((each, parameter) -> each + parameter, Integer.valueOf(1));

Specified by:

collectWith in interface ImmutableBag<T>

Specified by:

collectWith in interface ImmutableCollection<T>

Specified by:

collectWith in interface RichIterable<T>

Specified by:

collectWith in interface UnsortedBag<T>

Parameters:

function - A Function2 to use as the collect transformation function

parameter - A parameter to pass in for evaluation of the second argument P in function

Returns:

A new RichIterable that contains the transformed elements returned by Function2.value(Object, Object)

See Also:

• RichIterable.collect(Function)

collectBoolean

public ImmutableBooleanBag collectBoolean(BooleanFunction<? super T> booleanFunction)

Description copied from interface: RichIterable

Returns a new primitive boolean iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

Example using a Java 8 lambda expression:

BooleanIterable licenses =
    people.collectBoolean(person -> person.hasDrivingLicense());

Specified by:

collectBoolean in interface ImmutableBag<T>

Specified by:

collectBoolean in interface ImmutableCollection<T>

Specified by:

collectBoolean in interface RichIterable<T>

Specified by:

collectBoolean in interface UnsortedBag<T>

collectByte

public ImmutableByteBag collectByte(ByteFunction<? super T> byteFunction)

Description copied from interface: RichIterable

Returns a new primitive byte iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

Example using a Java 8 lambda expression:

ByteIterable bytes =
    people.collectByte(person -> person.getCode());

Specified by:

collectByte in interface ImmutableBag<T>

Specified by:

collectByte in interface ImmutableCollection<T>

Specified by:

collectByte in interface RichIterable<T>

Specified by:

collectByte in interface UnsortedBag<T>

collectChar

public ImmutableCharBag collectChar(CharFunction<? super T> charFunction)

Description copied from interface: RichIterable

Returns a new primitive char iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

Example using a Java 8 lambda expression:

CharIterable chars =
    people.collectChar(person -> person.getMiddleInitial());

Specified by:

collectChar in interface ImmutableBag<T>

Specified by:

collectChar in interface ImmutableCollection<T>

Specified by:

collectChar in interface RichIterable<T>

Specified by:

collectChar in interface UnsortedBag<T>

collectDouble

public ImmutableDoubleBag collectDouble(DoubleFunction<? super T> doubleFunction)

Description copied from interface: RichIterable

Returns a new primitive double iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

Example using a Java 8 lambda expression:

DoubleIterable doubles =
    people.collectDouble(person -> person.getMilesFromNorthPole());

Specified by:

collectDouble in interface ImmutableBag<T>

Specified by:

collectDouble in interface ImmutableCollection<T>

Specified by:

collectDouble in interface RichIterable<T>

Specified by:

collectDouble in interface UnsortedBag<T>

collectFloat

public ImmutableFloatBag collectFloat(FloatFunction<? super T> floatFunction)

Description copied from interface: RichIterable

Returns a new primitive float iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

Example using a Java 8 lambda expression:

FloatIterable floats =
    people.collectFloat(person -> person.getHeightInInches());

Specified by:

collectFloat in interface ImmutableBag<T>

Specified by:

collectFloat in interface ImmutableCollection<T>

Specified by:

collectFloat in interface RichIterable<T>

Specified by:

collectFloat in interface UnsortedBag<T>

collectInt

public ImmutableIntBag collectInt(IntFunction<? super T> intFunction)

Description copied from interface: RichIterable

Returns a new primitive int iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

Example using a Java 8 lambda expression:

IntIterable ints =
    people.collectInt(person -> person.getAge());

Specified by:

collectInt in interface ImmutableBag<T>

Specified by:

collectInt in interface ImmutableCollection<T>

Specified by:

collectInt in interface RichIterable<T>

Specified by:

collectInt in interface UnsortedBag<T>

collectLong

public ImmutableLongBag collectLong(LongFunction<? super T> longFunction)

Description copied from interface: RichIterable

Returns a new primitive long iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

Example using a Java 8 lambda expression:

LongIterable longs =
    people.collectLong(person -> person.getGuid());

Specified by:

collectLong in interface ImmutableBag<T>

Specified by:

collectLong in interface ImmutableCollection<T>

Specified by:

collectLong in interface RichIterable<T>

Specified by:

collectLong in interface UnsortedBag<T>

collectShort

public ImmutableShortBag collectShort(ShortFunction<? super T> shortFunction)

Description copied from interface: RichIterable

Returns a new primitive short iterable with the results of applying the specified function on each element of the source collection. This method is also commonly called transform or map.

Example using a Java 8 lambda expression:

ShortIterable shorts =
    people.collectShort(person -> person.getNumberOfJunkMailItemsReceivedPerMonth());

Specified by:

collectShort in interface ImmutableBag<T>

Specified by:

collectShort in interface ImmutableCollection<T>

Specified by:

collectShort in interface RichIterable<T>

Specified by:

collectShort in interface UnsortedBag<T>

topOccurrences

public ImmutableList<ObjectIntPair<T>> topOccurrences(int n)

Description copied from interface: Bag

Returns the count most frequently occurring items. In the event of a tie, all the items with the number of occurrences that match the occurrences of the last item will be returned.

Specified by:

topOccurrences in interface Bag<T>

Specified by:

topOccurrences in interface ImmutableBag<T>

bottomOccurrences

public ImmutableList<ObjectIntPair<T>> bottomOccurrences(int n)

Description copied from interface: Bag

Returns the count least frequently occurring items. In the event of a tie, all of the items with the number of occurrences that match the occurrences of the last item will be returned.

Specified by:

bottomOccurrences in interface Bag<T>

Specified by:

bottomOccurrences in interface ImmutableBag<T>

groupByUniqueKey

public <V> ImmutableMap<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 ImmutableCollection<T>

Specified by:

groupByUniqueKey in interface RichIterable<T>

See Also:

• RichIterable.groupBy(Function)

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.