Class ArrayView<E>
- All Implemented Interfaces:
Iterable<E>,CapacityCarrying,ExtendedBag<E>,ExtendedCollection<E>,ExtendedList<E>,ExtendedSequence<E>,Sized,XGettingBag<E>,XGettingCollection<E>,XGettingList<E>,XGettingSequence<E>,XIndexIterable<E>,XIterable<E>,XJoinable<E>,Copyable
public final class ArrayView<E> extends AbstractSimpleArrayCollection<E> implements XGettingList<E>
XGettingList.
For mutable extended lists (implementors of XSettingList, XList), see FixedList, LimitList, BulkList.
As instances of this class are completely immutable after creation, this list is automatically thread-safe.
Also note that by being an extended collection, this implementation offers various functional and batch procedures
to maximize internal iteration potential, eliminating the need to use the ill-conceived external iteration Iterator paradigm.
- Version:
- 0.91, 2011-02-28
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Nested Class Summary
Nested Classes Modifier and Type Class Description static classArrayView.OldArrayView<E>Nested classes/interfaces inherited from interface one.microstream.collections.interfaces.ExtendedCollection
ExtendedCollection.Creator<E,C extends ExtendedCollection<E>>Nested classes/interfaces inherited from interface one.microstream.collections.types.XGettingCollection
XGettingCollection.Creator<E>Nested classes/interfaces inherited from interface one.microstream.collections.types.XGettingList
XGettingList.Factory<E>Nested classes/interfaces inherited from interface one.microstream.collections.types.XIterable
XIterable.Executor<E> -
Constructor Summary
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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)ArrayView<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.<C extends Consumer<? super E>>
CcopySelection(C target, long... indices)<C extends Consumer<? super E>>
CcopyTo(C target)longcount(E element)longcountBy(Predicate<? super E> predicate)<C extends Consumer<? super E>>
Cdistinct(C target)<C extends Consumer<? super E>>
Cdistinct(C target, Equalator<? super E> equalator)Equalator<? super E>equality()booleanequals(Object o)Deprecated.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.<C extends Consumer<? super E>>
Cexcept(XGettingCollection<? extends E> samples, Equalator<? super E> equalator, C target)<C extends Consumer<? super E>>
CfilterTo(C target, Predicate<? super E> predicate)Efirst()Eget()Gets the first element in the collection.E[]getArray()inthashCode()Deprecated.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.XImmutableList<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)<C extends Consumer<? super E>>
Cintersect(XGettingCollection<? extends E> samples, Equalator<? super E> equalator, C 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()ArrayView.OldArrayView<E>old()Epeek()Epoll()SubListView<E>range(long fromIndex, long toIndex)longremainingCapacity()Returns the amount of elements this carrier instance can collect before reaching its maximimum capacity.<T> T[]rngCopyTo(int startIndex, int length, T[] target, int offset)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.ArrayView<E>setArray(E[] array)longsize()Object[]toArray()E[]toArray(Class<E> type)ArrayView<E>toReversed()StringtoString()<C extends Consumer<? super E>>
Cunion(XGettingCollection<? extends E> samples, Equalator<? super E> equalator, C target)ArrayView<E>view()SubListView<E>view(long fromIndex, long toIndex)Methods inherited from class one.microstream.collections.AbstractExtendedCollection
ensureFreeArrayCapacity, validateIndex
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Constructor Details
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ArrayView
public ArrayView() -
ArrayView
- Throws:
NullPointerException
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ArrayView
- Throws:
NullPointerException
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Method Details
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getArray
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equality
- Specified by:
equalityin interfaceXGettingCollection<E>
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setArray
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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 interfaceXGettingList<E>- Specified by:
copyin interfaceXGettingSequence<E>- Returns:
- a copy of this list
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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 interfaceXGettingList<E>- Specified by:
immurein interfaceXGettingSequence<E>- Returns:
- an immutable copy of this collection instance.
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toReversed
- Specified by:
toReversedin interfaceXGettingList<E>- Specified by:
toReversedin interfaceXGettingSequence<E>
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toArray
- Specified by:
toArrayin interfaceXGettingCollection<E>
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iterate
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join
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iterateIndexed
- Specified by:
iterateIndexedin interfaceXIndexIterable<E>
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count
- Specified by:
countin interfaceXGettingCollection<E>
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countBy
- Specified by:
countByin interfaceXGettingCollection<E>
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indexOf
- Specified by:
indexOfin interfaceXGettingSequence<E>
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indexBy
- Specified by:
indexByin interfaceXGettingSequence<E>
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lastIndexOf
- Specified by:
lastIndexOfin interfaceXGettingSequence<E>
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lastIndexBy
- Specified by:
lastIndexByin interfaceXGettingSequence<E>
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maxIndex
- Specified by:
maxIndexin interfaceXGettingSequence<E>
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minIndex
- Specified by:
minIndexin interfaceXGettingSequence<E>
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scan
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>- Returns:
- the index of the last positively tested element.
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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 interfaceXGettingCollection<E>- Specified by:
getin interfaceXGettingSequence<E>- Returns:
- the first element.
- See Also:
XGettingSequence.at(long),XGettingSequence.first(),XGettingSequence.last()
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first
- Specified by:
firstin interfaceXGettingSequence<E>
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last
- Specified by:
lastin interfaceXGettingSequence<E>
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poll
- Specified by:
pollin interfaceXGettingSequence<E>
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peek
- Specified by:
peekin interfaceXGettingSequence<E>
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seek
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>
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search
- Specified by:
searchin interfaceXGettingCollection<E>
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max
- Specified by:
maxin interfaceXGettingCollection<E>
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min
- Specified by:
minin interfaceXGettingCollection<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>- Returns:
trueif the collection contains volatile elements.
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nullAllowed
public boolean nullAllowed()- Specified by:
nullAllowedin interfaceExtendedCollection<E>
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isSorted
- Specified by:
isSortedin interfaceXGettingSequence<E>
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containsSearched
- Specified by:
containsSearchedin interfaceXGettingCollection<E>
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applies
- Specified by:
appliesin interfaceXGettingCollection<E>
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nullContained
public boolean nullContained()- Specified by:
nullContainedin interfaceXGettingCollection<E>
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containsId
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>- 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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contains
- Specified by:
containsin interfaceXGettingCollection<E>
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containsAll
- Specified by:
containsAllin interfaceXGettingCollection<E>
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equals
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>
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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>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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intersect
public <C extends Consumer<? super E>> C intersect(XGettingCollection<? extends E> samples, Equalator<? super E> equalator, C target)- Specified by:
intersectin interfaceXGettingCollection<E>
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except
public <C extends Consumer<? super E>> C except(XGettingCollection<? extends E> samples, Equalator<? super E> equalator, C target)- Specified by:
exceptin interfaceXGettingCollection<E>
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union
public <C extends Consumer<? super E>> C union(XGettingCollection<? extends E> samples, Equalator<? super E> equalator, C target)- Specified by:
unionin interfaceXGettingCollection<E>
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copyTo
- Specified by:
copyToin interfaceXGettingCollection<E>
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filterTo
- Specified by:
filterToin interfaceXGettingCollection<E>
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rngCopyTo
public <T> T[] rngCopyTo(int startIndex, int length, T[] target, int offset) -
distinct
- Specified by:
distinctin interfaceXGettingCollection<E>
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distinct
- Specified by:
distinctin interfaceXGettingCollection<E>
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copySelection
- Specified by:
copySelectionin interfaceXGettingSequence<E>
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isEmpty
public boolean isEmpty() -
iterator
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listIterator
- Specified by:
listIteratorin interfaceXGettingList<E>
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listIterator
- Specified by:
listIteratorin interfaceXGettingList<E>
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size
public long size()- Specified by:
sizein interfaceSized- Specified by:
sizein interfaceXGettingCollection<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- Returns:
- the maximum amount of elements this carrier instance can contain.
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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
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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
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view
- Specified by:
viewin interfaceXGettingBag<E>- Specified by:
viewin interfaceXGettingCollection<E>- Specified by:
viewin interfaceXGettingList<E>- Specified by:
viewin interfaceXGettingSequence<E>
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view
- Specified by:
viewin interfaceXGettingList<E>- Specified by:
viewin interfaceXGettingSequence<E>
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range
- Specified by:
rangein interfaceXGettingList<E>- Specified by:
rangein interfaceXGettingSequence<E>
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toString
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toArray
- Specified by:
toArrayin interfaceXGettingCollection<E>
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at
- Specified by:
atin interfaceXGettingSequence<E>- Throws:
ArrayIndexOutOfBoundsException
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equals
Deprecated.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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hashCode
Deprecated.- Specified by:
hashCodein interfaceXGettingCollection<E>- Overrides:
hashCodein classObject
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old
- Specified by:
oldin interfaceXGettingCollection<E>- Specified by:
oldin interfaceXGettingList<E>
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