Class LockedGettingMap<K,V>
- java.lang.Object
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- one.microstream.collections.LockedGettingMap<K,V>
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- All Implemented Interfaces:
Iterable<KeyValue<K,V>>
,CapacityCarrying
,ExtendedCollection<KeyValue<K,V>>
,ExtendedMap<K,V>
,Sized
,XGettingCollection<KeyValue<K,V>>
,XGettingMap<K,V>
,XGettingSet<KeyValue<K,V>>
,XIterable<KeyValue<K,V>>
,XJoinable<KeyValue<K,V>>
,Synchronized
,ThreadSafe
,Copyable
public final class LockedGettingMap<K,V> extends Object implements XGettingMap<K,V>, Synchronized
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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.types.XGettingMap
XGettingMap.Bridge<K,V>, XGettingMap.Creator<K,V>, XGettingMap.EntriesBridge<K,V>, XGettingMap.Keys<K,V>, XGettingMap.Satellite<K,V>, XGettingMap.Values<K,V>
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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 LockedGettingMap()
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Method Summary
Modifier and Type Method Description boolean
applies(Predicate<? super KeyValue<K,V>> predicate)
boolean
contains(KeyValue<K,V> element)
boolean
containsAll(XGettingCollection<? extends KeyValue<K,V>> elements)
boolean
containsId(KeyValue<K,V> 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 aPredicate
implementation that checks for object identity.boolean
containsSearched(Predicate<? super KeyValue<K,V>> predicate)
XGettingMap<K,V>
copy()
Creates a true copy of this collection which references the same elements as this collection does at the time the method is called.<T extends Consumer<? super KeyValue<K,V>>>
TcopyTo(T target)
long
count(KeyValue<K,V> element)
long
countBy(Predicate<? super KeyValue<K,V>> predicate)
<T extends Consumer<? super KeyValue<K,V>>>
Tdistinct(T target)
<T extends Consumer<? super KeyValue<K,V>>>
Tdistinct(T target, Equalator<? super KeyValue<K,V>> equalator)
Equalator<? super KeyValue<K,V>>
equality()
boolean
equals(Object o)
Deprecated.boolean
equals(XGettingCollection<? extends KeyValue<K,V>> samples, Equalator<? super KeyValue<K,V>> equalator)
Returnstrue
if the passed collection is of the same type as this collection andthis.equalsContent(list, equalator)
yieldstrue
.boolean
equalsContent(XGettingCollection<? extends KeyValue<K,V>> samples, Equalator<? super KeyValue<K,V>> equalator)
Returnstrue
if all elements of this list and the passed list are sequentially equal as defined by the passed equalator.<T extends Consumer<? super KeyValue<K,V>>>
Texcept(XGettingCollection<? extends KeyValue<K,V>> other, Equalator<? super KeyValue<K,V>> equalator, T target)
<T extends Consumer<? super KeyValue<K,V>>>
TfilterTo(T target, Predicate<? super KeyValue<K,V>> predicate)
void
forEach(Consumer<? super KeyValue<K,V>> action)
KeyValue<K,V>
get()
Gets one element from the collection.V
get(K key)
int
hashCode()
Deprecated.boolean
hasVolatileElements()
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.XImmutableMap<K,V>
immure()
Provides an instance of an immutable collection type with equal behavior and data as this instance.<T extends Consumer<? super KeyValue<K,V>>>
Tintersect(XGettingCollection<? extends KeyValue<K,V>> other, Equalator<? super KeyValue<K,V>> equalator, T target)
boolean
isEmpty()
boolean
isFull()
Returns true if the current capacity cannot be increased any more.<P extends Consumer<? super KeyValue<K,V>>>
Piterate(P procedure)
Iterator<KeyValue<K,V>>
iterator()
<A> A
join(BiConsumer<? super KeyValue<K,V>,? super A> joiner, A aggregate)
XGettingMap.Keys<K,V>
keys()
KeyValue<K,V>
lookup(K key)
KeyValue<K,V>
max(Comparator<? super KeyValue<K,V>> comparator)
long
maximumCapacity()
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.KeyValue<K,V>
min(Comparator<? super KeyValue<K,V>> comparator)
static <K,V>
LockedGettingMap<K,V>New(XGettingMap<K,V> subject)
static <K,V>
LockedGettingMap<K,V>New(XGettingMap<K,V> subject, Object lock)
boolean
nullAllowed()
boolean
nullContained()
boolean
nullKeyAllowed()
boolean
nullValuesAllowed()
XGettingMap.EntriesBridge<K,V>
old()
XGettingMap.Bridge<K,V>
oldMap()
<C extends Consumer<? super V>>
Cquery(XIterable<? extends K> keys, C collector)
long
remainingCapacity()
Returns the amount of elements this carrier instance can collect before reaching its maximimum capacity.KeyValue<K,V>
search(Predicate<? super KeyValue<K,V>> predicate)
V
searchValue(Predicate<? super K> keyPredicate)
KeyValue<K,V>
seek(KeyValue<K,V> 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.long
size()
Spliterator<KeyValue<K,V>>
spliterator()
Object[]
toArray()
KeyValue<K,V>[]
toArray(Class<KeyValue<K,V>> type)
<T extends Consumer<? super KeyValue<K,V>>>
Tunion(XGettingCollection<? extends KeyValue<K,V>> other, Equalator<? super KeyValue<K,V>> equalator, T target)
XGettingMap.Values<K,V>
values()
XGettingMap<K,V>
view()
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface one.microstream.collections.types.XGettingCollection
intSize
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Method Detail
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New
public static <K,V> LockedGettingMap<K,V> New(XGettingMap<K,V> subject)
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New
public static <K,V> LockedGettingMap<K,V> New(XGettingMap<K,V> subject, Object lock)
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maximumCapacity
public final long maximumCapacity()
Description copied from interface:CapacityCarrying
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.Integer.MAX_VALUE
)- Specified by:
maximumCapacity
in interfaceCapacityCarrying
- Returns:
- the maximum amount of elements this carrier instance can contain.
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join
public final <A> A join(BiConsumer<? super KeyValue<K,V>,? super A> joiner, A aggregate)
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nullAllowed
public final boolean nullAllowed()
- Specified by:
nullAllowed
in interfaceExtendedCollection<K>
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hasVolatileElements
public final boolean hasVolatileElements()
Description copied from interface:XGettingCollection
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. Examples areWeakReference
ofSoftReference
or implementations of collection entries that remove the element contained in an entry by some means outside the collection.
Note thatWeakReference
instances 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:
hasVolatileElements
in interfaceExtendedCollection<K>
- Specified by:
hasVolatileElements
in interfaceXGettingCollection<K>
- Returns:
true
if the collection contains volatile elements.
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keys
public final XGettingMap.Keys<K,V> keys()
- Specified by:
keys
in interfaceXGettingMap<K,V>
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values
public final XGettingMap.Values<K,V> values()
- Specified by:
values
in interfaceXGettingMap<K,V>
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remainingCapacity
public final long remainingCapacity()
Description copied from interface:CapacityCarrying
Returns the amount of elements this carrier instance can collect before reaching its maximimum capacity.- Specified by:
remainingCapacity
in interfaceCapacityCarrying
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old
public final XGettingMap.EntriesBridge<K,V> old()
- Specified by:
old
in interfaceXGettingCollection<K>
- Specified by:
old
in interfaceXGettingMap<K,V>
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oldMap
public final XGettingMap.Bridge<K,V> oldMap()
- Specified by:
oldMap
in interfaceXGettingMap<K,V>
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copy
public final XGettingMap<K,V> copy()
Description copied from interface:XGettingCollection
Creates a true copy of this collection which references the same elements as this collection does at the time the method is called. The elements themselves are NOT copied (no deep copying).
The type of the returned set is the same as of this list if possible.- Specified by:
copy
in interfaceCopyable
- Specified by:
copy
in interfaceXGettingCollection<K>
- Specified by:
copy
in interfaceXGettingMap<K,V>
- Specified by:
copy
in interfaceXGettingSet<K>
- Returns:
- a copy of this list
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query
public final <C extends Consumer<? super V>> C query(XIterable<? extends K> keys, C collector)
- Specified by:
query
in interfaceXGettingMap<K,V>
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nullKeyAllowed
public final boolean nullKeyAllowed()
- Specified by:
nullKeyAllowed
in interfaceXGettingMap<K,V>
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isFull
public final boolean isFull()
Description copied from interface:CapacityCarrying
Returns true if the current capacity cannot be increased any more.- Specified by:
isFull
in interfaceCapacityCarrying
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nullValuesAllowed
public final boolean nullValuesAllowed()
- Specified by:
nullValuesAllowed
in interfaceXGettingMap<K,V>
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get
public final KeyValue<K,V> get()
Description copied from interface:XGettingCollection
Gets one element from the collection. If the collection is not orderedXGettingSequence
, then it is undefined which element is returned. If the collection is ordered, the element at index 0 is returned.- Specified by:
get
in interfaceXGettingCollection<K>
- Returns:
- the first / any element.
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lookup
public final KeyValue<K,V> lookup(K key)
- Specified by:
lookup
in interfaceXGettingMap<K,V>
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view
public final XGettingMap<K,V> view()
- Specified by:
view
in interfaceXGettingCollection<K>
- Specified by:
view
in interfaceXGettingMap<K,V>
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toArray
public final Object[] toArray()
- Specified by:
toArray
in interfaceXGettingCollection<K>
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toArray
public final KeyValue<K,V>[] toArray(Class<KeyValue<K,V>> type)
- Specified by:
toArray
in interfaceXGettingCollection<K>
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spliterator
public final Spliterator<KeyValue<K,V>> spliterator()
- Specified by:
spliterator
in interfaceIterable<K>
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size
public final long size()
- Specified by:
size
in interfaceSized
- Specified by:
size
in interfaceXGettingCollection<K>
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equality
public final Equalator<? super KeyValue<K,V>> equality()
- Specified by:
equality
in interfaceXGettingCollection<K>
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equals
public final boolean equals(XGettingCollection<? extends KeyValue<K,V>> samples, Equalator<? super KeyValue<K,V>> equalator)
Description copied from interface:XGettingCollection
Returnstrue
if the passed collection is of the same type as this collection andthis.equalsContent(list, equalator)
yieldstrue
.- Specified by:
equals
in interfaceXGettingCollection<K>
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equalsContent
public final boolean equalsContent(XGettingCollection<? extends KeyValue<K,V>> samples, Equalator<? super KeyValue<K,V>> equalator)
Description copied from interface:XGettingCollection
Returnstrue
if 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:
equalsContent
in interfaceXGettingCollection<K>
equalator
- the equalator to use to determine the equality of each element- Returns:
true
if this list is equal to the passed list, false otherwise
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searchValue
public final V searchValue(Predicate<? super K> keyPredicate)
- Specified by:
searchValue
in interfaceXGettingMap<K,V>
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immure
public final XImmutableMap<K,V> immure()
Description copied from interface:XGettingMap
Provides 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:
immure
in interfaceXGettingCollection<K>
- Specified by:
immure
in interfaceXGettingMap<K,V>
- Specified by:
immure
in interfaceXGettingSet<K>
- Returns:
- an immutable copy of this collection instance.
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nullContained
public final boolean nullContained()
- Specified by:
nullContained
in interfaceXGettingCollection<K>
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containsId
public final boolean containsId(KeyValue<K,V> element)
Description copied from interface:XGettingCollection
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 aPredicate
implementation that checks for object identity. The only difference is a performance and usability advantage- Specified by:
containsId
in interfaceXGettingCollection<K>
- 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
public final boolean contains(KeyValue<K,V> element)
- Specified by:
contains
in interfaceXGettingCollection<K>
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containsSearched
public final boolean containsSearched(Predicate<? super KeyValue<K,V>> predicate)
- Specified by:
containsSearched
in interfaceXGettingCollection<K>
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containsAll
public final boolean containsAll(XGettingCollection<? extends KeyValue<K,V>> elements)
- Specified by:
containsAll
in interfaceXGettingCollection<K>
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applies
public final boolean applies(Predicate<? super KeyValue<K,V>> predicate)
- Specified by:
applies
in interfaceXGettingCollection<K>
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count
public final long count(KeyValue<K,V> element)
- Specified by:
count
in interfaceXGettingCollection<K>
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countBy
public final long countBy(Predicate<? super KeyValue<K,V>> predicate)
- Specified by:
countBy
in interfaceXGettingCollection<K>
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search
public final KeyValue<K,V> search(Predicate<? super KeyValue<K,V>> predicate)
- Specified by:
search
in interfaceXGettingCollection<K>
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seek
public final KeyValue<K,V> seek(KeyValue<K,V> sample)
Description copied from interface:XGettingCollection
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. (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:
seek
in interfaceXGettingCollection<K>
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max
public final KeyValue<K,V> max(Comparator<? super KeyValue<K,V>> comparator)
- Specified by:
max
in interfaceXGettingCollection<K>
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min
public final KeyValue<K,V> min(Comparator<? super KeyValue<K,V>> comparator)
- Specified by:
min
in interfaceXGettingCollection<K>
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distinct
public final <T extends Consumer<? super KeyValue<K,V>>> T distinct(T target)
- Specified by:
distinct
in interfaceXGettingCollection<K>
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distinct
public final <T extends Consumer<? super KeyValue<K,V>>> T distinct(T target, Equalator<? super KeyValue<K,V>> equalator)
- Specified by:
distinct
in interfaceXGettingCollection<K>
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copyTo
public final <T extends Consumer<? super KeyValue<K,V>>> T copyTo(T target)
- Specified by:
copyTo
in interfaceXGettingCollection<K>
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filterTo
public final <T extends Consumer<? super KeyValue<K,V>>> T filterTo(T target, Predicate<? super KeyValue<K,V>> predicate)
- Specified by:
filterTo
in interfaceXGettingCollection<K>
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union
public final <T extends Consumer<? super KeyValue<K,V>>> T union(XGettingCollection<? extends KeyValue<K,V>> other, Equalator<? super KeyValue<K,V>> equalator, T target)
- Specified by:
union
in interfaceXGettingCollection<K>
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intersect
public final <T extends Consumer<? super KeyValue<K,V>>> T intersect(XGettingCollection<? extends KeyValue<K,V>> other, Equalator<? super KeyValue<K,V>> equalator, T target)
- Specified by:
intersect
in interfaceXGettingCollection<K>
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except
public final <T extends Consumer<? super KeyValue<K,V>>> T except(XGettingCollection<? extends KeyValue<K,V>> other, Equalator<? super KeyValue<K,V>> equalator, T target)
- Specified by:
except
in interfaceXGettingCollection<K>
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equals
@Deprecated public final boolean equals(Object o)
Deprecated.Description copied from interface:XGettingCollection
Performs 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 asCollection
defines 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:
equals
in interfaceXGettingCollection<K>
- Overrides:
equals
in classObject
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hashCode
@Deprecated public final int hashCode()
Deprecated.- Specified by:
hashCode
in interfaceXGettingCollection<K>
- Overrides:
hashCode
in classObject
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