Collectors.ToConcurrentMap Method

Definition

Namespace:

Java.Util.Streams

Assembly:

Mono.Android.dll

Overloads

ToConcurrentMap(IFunction, IFunction, IBinaryOperator, ISupplier)	Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.
ToConcurrentMap(IFunction, IFunction)	Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.
ToConcurrentMap(IFunction, IFunction, IBinaryOperator)	Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.

ToConcurrentMap(IFunction, IFunction, IBinaryOperator, ISupplier)

Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.

[Android.Runtime.Register("toConcurrentMap", "(Ljava/util/function/Function;Ljava/util/function/Function;Ljava/util/function/BinaryOperator;Ljava/util/function/Supplier;)Ljava/util/stream/Collector;", "", ApiSince=24)]
[Java.Interop.JavaTypeParameters(new System.String[] { "T", "K", "U", "M extends java.util.concurrent.ConcurrentMap<K, U>" })]
public static Java.Util.Streams.ICollector? ToConcurrentMap (Java.Util.Functions.IFunction? keyMapper, Java.Util.Functions.IFunction? valueMapper, Java.Util.Functions.IBinaryOperator? mergeFunction, Java.Util.Functions.ISupplier? mapFactory);

[<Android.Runtime.Register("toConcurrentMap", "(Ljava/util/function/Function;Ljava/util/function/Function;Ljava/util/function/BinaryOperator;Ljava/util/function/Supplier;)Ljava/util/stream/Collector;", "", ApiSince=24)>]
[<Java.Interop.JavaTypeParameters(new System.String[] { "T", "K", "U", "M extends java.util.concurrent.ConcurrentMap<K, U>" })>]
static member ToConcurrentMap : Java.Util.Functions.IFunction * Java.Util.Functions.IFunction * Java.Util.Functions.IBinaryOperator * Java.Util.Functions.ISupplier -> Java.Util.Streams.ICollector

Parameters

keyMapper

IFunction

a mapping function to produce keys

valueMapper

IFunction

a mapping function to produce values

mergeFunction

IBinaryOperator

a merge function, used to resolve collisions between values associated with the same key, as supplied to Map#merge(Object, Object, BiFunction)

mapFactory

ISupplier

a supplier providing a new empty ConcurrentMap into which the results will be inserted

Returns

ICollector

a concurrent, unordered Collector which collects elements into a ConcurrentMap whose keys are the result of applying a key mapping function to the input elements, and whose values are the result of applying a value mapping function to all input elements equal to the key and combining them using the merge function

Attributes

RegisterAttribute JavaTypeParametersAttribute

Remarks

Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.

If the mapped keys contain duplicates (according to Object#equals(Object)), the value mapping function is applied to each equal element, and the results are merged using the provided merging function. The ConcurrentMap is created by a provided supplier function.

This is a Collector.Characteristics#CONCURRENT concurrent and Collector.Characteristics#UNORDERED unordered Collector.

Java documentation for java.util.stream.Collectors.toConcurrentMap(java.util.function.Function<? super T, ? extends K>, java.util.function.Function<? super T, ? extends U>, java.util.function.BinaryOperator<U>, java.util.function.Supplier<M>).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

ToConcurrentMap(IFunction, IFunction)

Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.

[Android.Runtime.Register("toConcurrentMap", "(Ljava/util/function/Function;Ljava/util/function/Function;)Ljava/util/stream/Collector;", "", ApiSince=24)]
[Java.Interop.JavaTypeParameters(new System.String[] { "T", "K", "U" })]
public static Java.Util.Streams.ICollector? ToConcurrentMap (Java.Util.Functions.IFunction? keyMapper, Java.Util.Functions.IFunction? valueMapper);

[<Android.Runtime.Register("toConcurrentMap", "(Ljava/util/function/Function;Ljava/util/function/Function;)Ljava/util/stream/Collector;", "", ApiSince=24)>]
[<Java.Interop.JavaTypeParameters(new System.String[] { "T", "K", "U" })>]
static member ToConcurrentMap : Java.Util.Functions.IFunction * Java.Util.Functions.IFunction -> Java.Util.Streams.ICollector

Parameters

keyMapper

IFunction

the mapping function to produce keys

valueMapper

IFunction

the mapping function to produce values

Returns

ICollector

a concurrent, unordered Collector which collects elements into a ConcurrentMap whose keys are the result of applying a key mapping function to the input elements, and whose values are the result of applying a value mapping function to the input elements

Attributes

RegisterAttribute JavaTypeParametersAttribute

Remarks

Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.

If the mapped keys contain duplicates (according to Object#equals(Object)), an IllegalStateException is thrown when the collection operation is performed. If the mapped keys may have duplicates, use #toConcurrentMap(Function, Function, BinaryOperator) instead.

There are no guarantees on the type, mutability, or serializability of the ConcurrentMap returned.

Java documentation for java.util.stream.Collectors.toConcurrentMap(java.util.function.Function<? super T, ? extends K>, java.util.function.Function<? super T, ? extends U>).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

ToConcurrentMap(IFunction, IFunction, IBinaryOperator)

Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.

[Android.Runtime.Register("toConcurrentMap", "(Ljava/util/function/Function;Ljava/util/function/Function;Ljava/util/function/BinaryOperator;)Ljava/util/stream/Collector;", "", ApiSince=24)]
[Java.Interop.JavaTypeParameters(new System.String[] { "T", "K", "U" })]
public static Java.Util.Streams.ICollector? ToConcurrentMap (Java.Util.Functions.IFunction? keyMapper, Java.Util.Functions.IFunction? valueMapper, Java.Util.Functions.IBinaryOperator? mergeFunction);

[<Android.Runtime.Register("toConcurrentMap", "(Ljava/util/function/Function;Ljava/util/function/Function;Ljava/util/function/BinaryOperator;)Ljava/util/stream/Collector;", "", ApiSince=24)>]
[<Java.Interop.JavaTypeParameters(new System.String[] { "T", "K", "U" })>]
static member ToConcurrentMap : Java.Util.Functions.IFunction * Java.Util.Functions.IFunction * Java.Util.Functions.IBinaryOperator -> Java.Util.Streams.ICollector

Parameters

keyMapper

IFunction

a mapping function to produce keys

valueMapper

IFunction

a mapping function to produce values

mergeFunction

IBinaryOperator

a merge function, used to resolve collisions between values associated with the same key, as supplied to Map#merge(Object, Object, BiFunction)

Returns

ICollector

a concurrent, unordered Collector which collects elements into a ConcurrentMap whose keys are the result of applying a key mapping function to the input elements, and whose values are the result of applying a value mapping function to all input elements equal to the key and combining them using the merge function

Attributes

RegisterAttribute JavaTypeParametersAttribute

Remarks

Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.

If the mapped keys contain duplicates (according to Object#equals(Object)), the value mapping function is applied to each equal element, and the results are merged using the provided merging function.

There are no guarantees on the type, mutability, or serializability of the ConcurrentMap returned.

Java documentation for java.util.stream.Collectors.toConcurrentMap(java.util.function.Function<? super T, ? extends K>, java.util.function.Function<? super T, ? extends U>, java.util.function.BinaryOperator<U>).

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.