Class SingletonView<E>
- java.lang.Object
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- one.microstream.collections.SingletonView<E>
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- All Implemented Interfaces:
Iterable<E>,CapacityCarrying,ExtendedBag<E>,ExtendedCollection<E>,ExtendedList<E>,ExtendedSequence<E>,Sized,XGettingBag<E>,XGettingCollection<E>,XGettingEnum<E>,XGettingList<E>,XGettingSequence<E>,XGettingSet<E>,XIndexIterable<E>,XIterable<E>,XJoinable<E>,XReferencing<E>,Referencing<E>,Copyable
public class SingletonView<E> extends Object implements XReferencing<E>
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Nested Class Summary
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Nested classes/interfaces inherited from interface one.microstream.typing.Copyable
Copyable.Static
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Nested classes/interfaces inherited from interface one.microstream.collections.interfaces.ExtendedCollection
ExtendedCollection.Creator<E,C extends ExtendedCollection<E>>
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Nested classes/interfaces inherited from interface one.microstream.collections.types.XGettingCollection
XGettingCollection.Creator<E>
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Nested classes/interfaces inherited from interface one.microstream.collections.types.XGettingEnum
XGettingEnum.Creator<E>
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Nested classes/interfaces inherited from interface one.microstream.collections.types.XGettingList
XGettingList.Factory<E>
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Nested classes/interfaces inherited from interface one.microstream.collections.types.XGettingSequence
XGettingSequence.Factory<E>
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Nested classes/interfaces inherited from interface one.microstream.collections.types.XIterable
XIterable.Executor<E>
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Constructor Summary
Constructors Constructor Description SingletonView(Singleton<E> subject)
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Method Summary
Modifier and Type Method Description booleanapplies(Predicate<? super E> predicate)Eat(long index)booleancontains(E element)booleancontainsAll(XGettingCollection<? extends E> elements)booleancontainsId(E element)Special version of contains() that guarantees to use identity comparison (" == ") when searching for the given element regardless of the collection's internal logic.
This method has the same behavior asXGettingCollection.containsSearched(Predicate)with aPredicateimplementation that checks for object identity.booleancontainsSearched(Predicate<? super E> predicate)SingletonView<E>copy()Creates a true copy of this list which references th same elements in the same order as this list does at the time the method is called.<T extends Consumer<? super E>>
TcopySelection(T target, long... indices)<T extends Consumer<? super E>>
TcopyTo(T target)longcount(E element)longcountBy(Predicate<? super E> predicate)<T extends Consumer<? super E>>
Tdistinct(T target)<T extends Consumer<? super E>>
Tdistinct(T target, Equalator<? super E> equalator)Equalator<? super E>equality()booleanequals(Object obj)Performs an equality comparison according to the specification inCollection.booleanequals(XGettingCollection<? extends E> samples, Equalator<? super E> equalator)Returnstrueif the passed collection is of the same type as this collection andthis.equalsContent(list, equalator)yieldstrue.booleanequalsContent(XGettingCollection<? extends E> samples, Equalator<? super E> equalator)Returnstrueif all elements of this list and the passed list are sequentially equal as defined by the passed equalator.<T extends Consumer<? super E>>
Texcept(XGettingCollection<? extends E> other, Equalator<? super E> equalator, T target)<T extends Consumer<? super E>>
TfilterTo(T target, Predicate<? super E> predicate)Efirst()Eget()Gets the first element in the collection.inthashCode()booleanhasVolatileElements()Tells if this collection contains volatile elements.
An element is volatile, if it can become no longer reachable by the collection without being removed from the collection.Constant<E>immure()Provides an instance of an immutable collection type with equal behavior and data as this instance.longindexBy(Predicate<? super E> predicate)longindexOf(E element)<T extends Consumer<? super E>>
Tintersect(XGettingCollection<? extends E> other, Equalator<? super E> equalator, T target)booleanisEmpty()booleanisFull()Returns true if the current capacity cannot be increased any more.booleanisSorted(Comparator<? super E> comparator)<P extends Consumer<? super E>>
Piterate(P procedure)<P extends IndexedAcceptor<? super E>>
PiterateIndexed(P procedure)Iterator<E>iterator()<A> Ajoin(BiConsumer<? super E,? super A> joiner, A aggregate)Elast()longlastIndexBy(Predicate<? super E> predicate)longlastIndexOf(E element)ListIterator<E>listIterator()ListIterator<E>listIterator(long index)Emax(Comparator<? super E> comparator)longmaximumCapacity()Returns the maximum amount of elements this carrier instance can contain.
The actual value may be depend on the configuration of the concrete instance or may depend only on the implementation of the carrier (meaning it is constant for all instances of the implementation, e.g.longmaxIndex(Comparator<? super E> comparator)Emin(Comparator<? super E> comparator)longminIndex(Comparator<? super E> comparator)booleannullAllowed()booleannullContained()one.microstream.collections.Singleton.OldSingletonold()Epeek()Epoll()SingletonView<E>range(long fromIndex, long toIndex)longremainingCapacity()Returns the amount of elements this carrier instance can collect before reaching its maximimum capacity.longscan(Predicate<? super E> predicate)Iterates through the collection and returns the index of the last element that the passedPredicateapplied to ("scanning").Esearch(Predicate<? super E> predicate)Eseek(E sample)Returns the first contained element matching the passed sample as defined by the collection's equality logic or null, if no fitting element is contained.longsize()Object[]toArray()E[]toArray(Class<E> type)SingletonView<E>toReversed()StringtoString()<T extends Consumer<? super E>>
Tunion(XGettingCollection<? extends E> other, Equalator<? super E> equalator, T target)SingletonView<E>view()SingletonView<E>view(long lowIndex, long highIndex)-
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Methods inherited from interface one.microstream.collections.types.XGettingCollection
intSize
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Methods inherited from interface one.microstream.collections.types.XGettingSequence
hasIndex
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Method Detail
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hashCode
public int hashCode()
- Specified by:
hashCodein interfaceXGettingCollection<E>- Overrides:
hashCodein classObject
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get
public E get()
Description copied from interface:XGettingSequenceGets the first element in the collection. This is a parameterless alias vorat(0).first() is an alias for this method for consistency reasons with last().- Specified by:
getin interfaceReferencing<E>- Specified by:
getin interfaceXGettingCollection<E>- Specified by:
getin interfaceXGettingSequence<E>- Specified by:
getin interfaceXReferencing<E>- Returns:
- the first element.
- See Also:
XGettingSequence.at(long),XGettingSequence.first(),XGettingSequence.last()
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copy
public SingletonView<E> copy()
Description copied from interface:XGettingSequenceCreates a true copy of this list which references th same elements in the same order as this list does at the time the method is called. The elements themselves are NOT copied (no deep copying).
The type of the returned list is the same as of this list if possible (i.e.: a SubList can not meaningful return a true copy that references its elements but still is a SubList)- Specified by:
copyin interfaceCopyable- Specified by:
copyin interfaceXGettingBag<E>- Specified by:
copyin interfaceXGettingCollection<E>- Specified by:
copyin interfaceXGettingEnum<E>- Specified by:
copyin interfaceXGettingList<E>- Specified by:
copyin interfaceXGettingSequence<E>- Specified by:
copyin interfaceXGettingSet<E>- Specified by:
copyin interfaceXReferencing<E>- Returns:
- a copy of this list
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iterate
public final <P extends Consumer<? super E>> P iterate(P procedure)
- Specified by:
iteratein interfaceXGettingEnum<E>- Specified by:
iteratein interfaceXGettingSet<E>- Specified by:
iteratein interfaceXIterable<E>
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iterateIndexed
public final <P extends IndexedAcceptor<? super E>> P iterateIndexed(P procedure)
- Specified by:
iterateIndexedin interfaceXIndexIterable<E>
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join
public final <A> A join(BiConsumer<? super E,? super A> joiner, A aggregate)
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immure
public Constant<E> immure()
Description copied from interface:XGettingListProvides an instance of an immutable collection type with equal behavior and data as this instance.If this instance already is of an immutable collection type, it returns itself.
- Specified by:
immurein interfaceXGettingBag<E>- Specified by:
immurein interfaceXGettingCollection<E>- Specified by:
immurein interfaceXGettingEnum<E>- Specified by:
immurein interfaceXGettingList<E>- Specified by:
immurein interfaceXGettingSequence<E>- Specified by:
immurein interfaceXGettingSet<E>- Specified by:
immurein interfaceXReferencing<E>- Returns:
- an immutable copy of this collection instance.
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listIterator
public ListIterator<E> listIterator()
- Specified by:
listIteratorin interfaceXGettingList<E>- Specified by:
listIteratorin interfaceXReferencing<E>
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equals
public boolean equals(Object obj)
Description copied from interface:XGettingCollectionPerforms an equality comparison according to the specification inCollection.Note that it is this interface's author opinion that the whole concept of equals() in standard Java, especially in the collection implementations, is flawed.
The reason is because all different kinds of comparison types that actually depend on the situation have to be mixed up in a harcoded fashion in one method, from identity comparison over data indentity comparison to content comparison.
In order to get the right behavior in every situation, one has to distinct between different types of equality
This means several things:
1.) You can't just say for example an ArrayList is the "same" as a LinkedList just because they contain the same content.
There are different implementations for a good reason, so you have to distinct them when comparing. There are simple code examples which create massive misbehavior that will catastrophically ruin the runtime behavior of a programm due to this error in Java / JDK / Sun / whatever.
2.) You can't always determine equality of two collections by determining equality of each element asCollectiondefines it.As a conclusion: don't use this method!
Be clear what type of comparison you really need, then use one of the following methods and proper comparators:
XGettingCollection.equals(XGettingCollection,Equalator)
XGettingCollection.equalsContent(XGettingCollection,Equalator)
- Specified by:
equalsin interfaceXGettingCollection<E>- Overrides:
equalsin classObject
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listIterator
public ListIterator<E> listIterator(long index)
- Specified by:
listIteratorin interfaceXGettingList<E>- Specified by:
listIteratorin interfaceXReferencing<E>
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old
public one.microstream.collections.Singleton.OldSingleton old()
- Specified by:
oldin interfaceXGettingCollection<E>- Specified by:
oldin interfaceXGettingList<E>- Specified by:
oldin interfaceXReferencing<E>
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range
public SingletonView<E> range(long fromIndex, long toIndex)
- Specified by:
rangein interfaceXGettingEnum<E>- Specified by:
rangein interfaceXGettingList<E>- Specified by:
rangein interfaceXGettingSequence<E>- Specified by:
rangein interfaceXReferencing<E>
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toReversed
public SingletonView<E> toReversed()
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toReversedin interfaceXGettingEnum<E>- Specified by:
toReversedin interfaceXGettingList<E>- Specified by:
toReversedin interfaceXGettingSequence<E>- Specified by:
toReversedin interfaceXReferencing<E>
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copySelection
public <T extends Consumer<? super E>> T copySelection(T target, long... indices)
- Specified by:
copySelectionin interfaceXGettingSequence<E>- Specified by:
copySelectionin interfaceXReferencing<E>
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first
public E first()
- Specified by:
firstin interfaceXGettingSequence<E>- Specified by:
firstin interfaceXReferencing<E>
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at
public E at(long index)
- Specified by:
atin interfaceXGettingSequence<E>- Specified by:
atin interfaceXReferencing<E>
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indexOf
public long indexOf(E element)
- Specified by:
indexOfin interfaceXGettingSequence<E>- Specified by:
indexOfin interfaceXReferencing<E>
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indexBy
public long indexBy(Predicate<? super E> predicate)
- Specified by:
indexByin interfaceXGettingSequence<E>- Specified by:
indexByin interfaceXReferencing<E>
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isSorted
public boolean isSorted(Comparator<? super E> comparator)
- Specified by:
isSortedin interfaceXGettingSequence<E>- Specified by:
isSortedin interfaceXReferencing<E>
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last
public E last()
- Specified by:
lastin interfaceXGettingSequence<E>- Specified by:
lastin interfaceXReferencing<E>
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lastIndexOf
public long lastIndexOf(E element)
- Specified by:
lastIndexOfin interfaceXGettingSequence<E>- Specified by:
lastIndexOfin interfaceXReferencing<E>
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lastIndexBy
public long lastIndexBy(Predicate<? super E> predicate)
- Specified by:
lastIndexByin interfaceXGettingSequence<E>- Specified by:
lastIndexByin interfaceXReferencing<E>
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maxIndex
public long maxIndex(Comparator<? super E> comparator)
- Specified by:
maxIndexin interfaceXGettingSequence<E>- Specified by:
maxIndexin interfaceXReferencing<E>
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minIndex
public long minIndex(Comparator<? super E> comparator)
- Specified by:
minIndexin interfaceXGettingSequence<E>- Specified by:
minIndexin interfaceXReferencing<E>
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peek
public E peek()
- Specified by:
peekin interfaceXGettingSequence<E>- Specified by:
peekin interfaceXReferencing<E>
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poll
public E poll()
- Specified by:
pollin interfaceXGettingSequence<E>- Specified by:
pollin interfaceXReferencing<E>
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scan
public long scan(Predicate<? super E> predicate)
Description copied from interface:XGettingSequenceIterates through the collection and returns the index of the last element that the passedPredicateapplied to ("scanning").- Specified by:
scanin interfaceXGettingSequence<E>- Specified by:
scanin interfaceXReferencing<E>- Returns:
- the index of the last positively tested element.
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view
public SingletonView<E> view()
- Specified by:
viewin interfaceXGettingBag<E>- Specified by:
viewin interfaceXGettingCollection<E>- Specified by:
viewin interfaceXGettingEnum<E>- Specified by:
viewin interfaceXGettingList<E>- Specified by:
viewin interfaceXGettingSequence<E>- Specified by:
viewin interfaceXReferencing<E>
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view
public SingletonView<E> view(long lowIndex, long highIndex)
- Specified by:
viewin interfaceXGettingEnum<E>- Specified by:
viewin interfaceXGettingList<E>- Specified by:
viewin interfaceXGettingSequence<E>- Specified by:
viewin interfaceXReferencing<E>
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containsSearched
public boolean containsSearched(Predicate<? super E> predicate)
- Specified by:
containsSearchedin interfaceXGettingCollection<E>- Specified by:
containsSearchedin interfaceXReferencing<E>
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applies
public boolean applies(Predicate<? super E> predicate)
- Specified by:
appliesin interfaceXGettingCollection<E>- Specified by:
appliesin interfaceXReferencing<E>
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contains
public boolean contains(E element)
- Specified by:
containsin interfaceXGettingCollection<E>- Specified by:
containsin interfaceXReferencing<E>
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containsAll
public boolean containsAll(XGettingCollection<? extends E> elements)
- Specified by:
containsAllin interfaceXGettingCollection<E>- Specified by:
containsAllin interfaceXReferencing<E>
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containsId
public boolean containsId(E element)
Description copied from interface:XGettingCollectionSpecial version of contains() that guarantees to use identity comparison (" == ") when searching for the given element regardless of the collection's internal logic.
This method has the same behavior asXGettingCollection.containsSearched(Predicate)with aPredicateimplementation that checks for object identity. The only difference is a performance and usability advantage- Specified by:
containsIdin interfaceXGettingCollection<E>- Specified by:
containsIdin interfaceXReferencing<E>- Parameters:
element- the element to be searched in the collection by identity.- Returns:
- whether this collection contains exactely the given element.
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copyTo
public <T extends Consumer<? super E>> T copyTo(T target)
- Specified by:
copyToin interfaceXGettingCollection<E>- Specified by:
copyToin interfaceXReferencing<E>
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filterTo
public <T extends Consumer<? super E>> T filterTo(T target, Predicate<? super E> predicate)
- Specified by:
filterToin interfaceXGettingCollection<E>- Specified by:
filterToin interfaceXReferencing<E>
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count
public long count(E element)
- Specified by:
countin interfaceXGettingCollection<E>- Specified by:
countin interfaceXReferencing<E>
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countBy
public long countBy(Predicate<? super E> predicate)
- Specified by:
countByin interfaceXGettingCollection<E>- Specified by:
countByin interfaceXReferencing<E>
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distinct
public <T extends Consumer<? super E>> T distinct(T target)
- Specified by:
distinctin interfaceXGettingCollection<E>- Specified by:
distinctin interfaceXReferencing<E>
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distinct
public <T extends Consumer<? super E>> T distinct(T target, Equalator<? super E> equalator)
- Specified by:
distinctin interfaceXGettingCollection<E>- Specified by:
distinctin interfaceXReferencing<E>
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equality
public Equalator<? super E> equality()
- Specified by:
equalityin interfaceXGettingCollection<E>- Specified by:
equalityin interfaceXReferencing<E>
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equals
public boolean equals(XGettingCollection<? extends E> samples, Equalator<? super E> equalator)
Description copied from interface:XGettingCollectionReturnstrueif the passed collection is of the same type as this collection andthis.equalsContent(list, equalator)yieldstrue.- Specified by:
equalsin interfaceXGettingCollection<E>- Specified by:
equalsin interfaceXReferencing<E>
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equalsContent
public boolean equalsContent(XGettingCollection<? extends E> samples, Equalator<? super E> equalator)
Description copied from interface:XGettingCollectionReturnstrueif all elements of this list and the passed list are sequentially equal as defined by the passed equalator.Note that for colletion types that don't have a defined order of elements, this method is hardly usable (as is
XGettingCollection.equals(Object)for them as defined inCollection). The core problem of comparing collections that have no defined order is that they aren't really reliably comparable to any other collection.- Specified by:
equalsContentin interfaceXGettingCollection<E>- Specified by:
equalsContentin interfaceXReferencing<E>equalator- the equalator to use to determine the equality of each element- Returns:
trueif this list is equal to the passed list, false otherwise
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except
public <T extends Consumer<? super E>> T except(XGettingCollection<? extends E> other, Equalator<? super E> equalator, T target)
- Specified by:
exceptin interfaceXGettingCollection<E>- Specified by:
exceptin interfaceXReferencing<E>
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hasVolatileElements
public boolean hasVolatileElements()
Description copied from interface:XGettingCollectionTells if this collection contains volatile elements.
An element is volatile, if it can become no longer reachable by the collection without being removed from the collection. Examples areWeakReferenceofSoftReferenceor implementations of collection entries that remove the element contained in an entry by some means outside the collection.
Note thatWeakReferenceinstances that are added to a a simple (non-volatile) implementation of a collection do NOT make the collection volatile, as the elements themselves (the reference instances) are still strongly referenced.- Specified by:
hasVolatileElementsin interfaceExtendedCollection<E>- Specified by:
hasVolatileElementsin interfaceXGettingCollection<E>- Specified by:
hasVolatileElementsin interfaceXReferencing<E>- Returns:
trueif the collection contains volatile elements.
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intersect
public <T extends Consumer<? super E>> T intersect(XGettingCollection<? extends E> other, Equalator<? super E> equalator, T target)
- Specified by:
intersectin interfaceXGettingCollection<E>- Specified by:
intersectin interfaceXReferencing<E>
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isEmpty
public boolean isEmpty()
- Specified by:
isEmptyin interfaceSized- Specified by:
isEmptyin interfaceXReferencing<E>
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iterator
public Iterator<E> iterator()
- Specified by:
iteratorin interfaceIterable<E>- Specified by:
iteratorin interfaceXGettingCollection<E>- Specified by:
iteratorin interfaceXReferencing<E>
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max
public E max(Comparator<? super E> comparator)
- Specified by:
maxin interfaceXGettingCollection<E>- Specified by:
maxin interfaceXReferencing<E>
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min
public E min(Comparator<? super E> comparator)
- Specified by:
minin interfaceXGettingCollection<E>- Specified by:
minin interfaceXReferencing<E>
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nullContained
public boolean nullContained()
- Specified by:
nullContainedin interfaceXGettingCollection<E>- Specified by:
nullContainedin interfaceXReferencing<E>
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seek
public E seek(E sample)
Description copied from interface:XGettingCollectionReturns the first contained element matching the passed sample as defined by the collection's equality logic or null, if no fitting element is contained. (For collections using referential equality, this method is basically just a variation ofXGettingCollection.contains(Object)with a different return type. For collections with data-dependant equality, the returned element might be the same as the passed one or a data-wise equal one, depending on the content of the collection)- Specified by:
seekin interfaceXGettingCollection<E>- Specified by:
seekin interfaceXReferencing<E>
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search
public E search(Predicate<? super E> predicate)
- Specified by:
searchin interfaceXGettingCollection<E>- Specified by:
searchin interfaceXReferencing<E>
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size
public long size()
- Specified by:
sizein interfaceSized- Specified by:
sizein interfaceXGettingCollection<E>- Specified by:
sizein interfaceXReferencing<E>
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toArray
public Object[] toArray()
- Specified by:
toArrayin interfaceXGettingCollection<E>- Specified by:
toArrayin interfaceXReferencing<E>
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toArray
public E[] toArray(Class<E> type)
- Specified by:
toArrayin interfaceXGettingCollection<E>- Specified by:
toArrayin interfaceXReferencing<E>
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union
public <T extends Consumer<? super E>> T union(XGettingCollection<? extends E> other, Equalator<? super E> equalator, T target)
- Specified by:
unionin interfaceXGettingCollection<E>- Specified by:
unionin interfaceXReferencing<E>
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nullAllowed
public boolean nullAllowed()
- Specified by:
nullAllowedin interfaceExtendedCollection<E>- Specified by:
nullAllowedin interfaceXReferencing<E>
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remainingCapacity
public long remainingCapacity()
Description copied from interface:CapacityCarryingReturns the amount of elements this carrier instance can collect before reaching its maximimum capacity.- Specified by:
remainingCapacityin interfaceCapacityCarrying- Specified by:
remainingCapacityin interfaceXReferencing<E>
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isFull
public boolean isFull()
Description copied from interface:CapacityCarryingReturns true if the current capacity cannot be increased any more.- Specified by:
isFullin interfaceCapacityCarrying- Specified by:
isFullin interfaceXReferencing<E>
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maximumCapacity
public long maximumCapacity()
Description copied from interface:CapacityCarryingReturns the maximum amount of elements this carrier instance can contain.
The actual value may be depend on the configuration of the concrete instance or may depend only on the implementation of the carrier (meaning it is constant for all instances of the implementation, e.g.Integer.MAX_VALUE)- Specified by:
maximumCapacityin interfaceCapacityCarrying- Specified by:
maximumCapacityin interfaceXReferencing<E>- Returns:
- the maximum amount of elements this carrier instance can contain.
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