ParallelEnumerable.GroupJoin Method

Reference

Definition

Namespace:: System.Linq

Assembly:: System.Linq.Parallel.dll

Assembly:: System.Core.dll

Assembly:: netstandard.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Correlates in parallel the elements of two sequences based on equality of keys and groups the results.

Overloads

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>)	Obsolete. This GroupJoin overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>)	Correlates in parallel the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.
GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)	Obsolete. This GroupJoin overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.
GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)	Correlates in parallel the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys.

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Caution

The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.

This GroupJoin overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.

public:
generic <typename TOuter, typename TInner, typename TKey, typename TResult>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::ParallelQuery<TResult> ^ GroupJoin(System::Linq::ParallelQuery<TOuter> ^ outer, System::Collections::Generic::IEnumerable<TInner> ^ inner, Func<TOuter, TKey> ^ outerKeySelector, Func<TInner, TKey> ^ innerKeySelector, Func<TOuter, System::Collections::Generic::IEnumerable<TInner> ^, TResult> ^ resultSelector);

[System.Obsolete("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")]
public static System.Linq.ParallelQuery<TResult> GroupJoin<TOuter,TInner,TKey,TResult> (this System.Linq.ParallelQuery<TOuter> outer, System.Collections.Generic.IEnumerable<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,System.Collections.Generic.IEnumerable<TInner>,TResult> resultSelector);

[<System.Obsolete("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")>]
static member GroupJoin : System.Linq.ParallelQuery<'Outer> * seq<'Inner> * Func<'Outer, 'Key> * Func<'Inner, 'Key> * Func<'Outer, seq<'Inner>, 'Result> -> System.Linq.ParallelQuery<'Result>

<Extension()>
Public Function GroupJoin(Of TOuter, TInner, TKey, TResult) (outer As ParallelQuery(Of TOuter), inner As IEnumerable(Of TInner), outerKeySelector As Func(Of TOuter, TKey), innerKeySelector As Func(Of TInner, TKey), resultSelector As Func(Of TOuter, IEnumerable(Of TInner), TResult)) As ParallelQuery(Of TResult)

Type Parameters

TOuter

This type parameter is not used.

TInner

This type parameter is not used.

TKey

This type parameter is not used.

TResult

This type parameter is not used.

Parameters

outer: ParallelQuery<TOuter>

This parameter is not used.

inner: IEnumerable<TInner>

This parameter is not used.

outerKeySelector: Func<TOuter,TKey>

This parameter is not used.

innerKeySelector: Func<TInner,TKey>

This parameter is not used.

resultSelector: Func<TOuter,IEnumerable<TInner>,TResult>

This parameter is not used.

Returns

ParallelQuery<TResult>

This overload always throws a NotSupportedException.

Attributes: ObsoleteAttribute

Exceptions

NotSupportedException

The exception that occurs when this method is called.

Remarks

This overload exists to disallow usage of GroupJoin with a left data source of type ParallelQuery<TSource> and a right data source of type IEnumerable<T>. Otherwise, the GroupJoin operator would appear to be binding to the parallel implementation, but would in reality bind to the sequential implementation.

Applies to

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Correlates in parallel the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys.

public:
generic <typename TOuter, typename TInner, typename TKey, typename TResult>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::ParallelQuery<TResult> ^ GroupJoin(System::Linq::ParallelQuery<TOuter> ^ outer, System::Linq::ParallelQuery<TInner> ^ inner, Func<TOuter, TKey> ^ outerKeySelector, Func<TInner, TKey> ^ innerKeySelector, Func<TOuter, System::Collections::Generic::IEnumerable<TInner> ^, TResult> ^ resultSelector);

public static System.Linq.ParallelQuery<TResult> GroupJoin<TOuter,TInner,TKey,TResult> (this System.Linq.ParallelQuery<TOuter> outer, System.Linq.ParallelQuery<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,System.Collections.Generic.IEnumerable<TInner>,TResult> resultSelector);

static member GroupJoin : System.Linq.ParallelQuery<'Outer> * System.Linq.ParallelQuery<'Inner> * Func<'Outer, 'Key> * Func<'Inner, 'Key> * Func<'Outer, seq<'Inner>, 'Result> -> System.Linq.ParallelQuery<'Result>

<Extension()>
Public Function GroupJoin(Of TOuter, TInner, TKey, TResult) (outer As ParallelQuery(Of TOuter), inner As ParallelQuery(Of TInner), outerKeySelector As Func(Of TOuter, TKey), innerKeySelector As Func(Of TInner, TKey), resultSelector As Func(Of TOuter, IEnumerable(Of TInner), TResult)) As ParallelQuery(Of TResult)

Type Parameters

TOuter

The type of the elements of the first sequence.

TInner

The type of the elements of the second sequence.

TKey

The type of the keys returned by the key selector functions.

TResult

The type of the result elements.

Parameters

outer: ParallelQuery<TOuter>

The first sequence to join.

inner: ParallelQuery<TInner>

The sequence to join to the first sequence.

outerKeySelector: Func<TOuter,TKey>

A function to extract the join key from each element of the first sequence.

innerKeySelector: Func<TInner,TKey>

A function to extract the join key from each element of the second sequence.

resultSelector: Func<TOuter,IEnumerable<TInner>,TResult>

A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence.

Returns

ParallelQuery<TResult>

A sequence that has elements of type TResult that are obtained by performing a grouped join on two sequences.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or action or outer or inner or outerKeySelector or innerKeySelector or resultSelector is null (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

Applies to

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Caution

This GroupJoin overload should never be called. This method is marked as obsolete and always throws NotSupportedException when called.

public:
generic <typename TOuter, typename TInner, typename TKey, typename TResult>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::ParallelQuery<TResult> ^ GroupJoin(System::Linq::ParallelQuery<TOuter> ^ outer, System::Collections::Generic::IEnumerable<TInner> ^ inner, Func<TOuter, TKey> ^ outerKeySelector, Func<TInner, TKey> ^ innerKeySelector, Func<TOuter, System::Collections::Generic::IEnumerable<TInner> ^, TResult> ^ resultSelector, System::Collections::Generic::IEqualityComparer<TKey> ^ comparer);

[System.Obsolete("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")]
public static System.Linq.ParallelQuery<TResult> GroupJoin<TOuter,TInner,TKey,TResult> (this System.Linq.ParallelQuery<TOuter> outer, System.Collections.Generic.IEnumerable<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,System.Collections.Generic.IEnumerable<TInner>,TResult> resultSelector, System.Collections.Generic.IEqualityComparer<TKey> comparer);

[System.Obsolete("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")]
public static System.Linq.ParallelQuery<TResult> GroupJoin<TOuter,TInner,TKey,TResult> (this System.Linq.ParallelQuery<TOuter> outer, System.Collections.Generic.IEnumerable<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,System.Collections.Generic.IEnumerable<TInner>,TResult> resultSelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer);

[<System.Obsolete("The second data source of a binary operator must be of type System.Linq.ParallelQuery<T> rather than System.Collections.Generic.IEnumerable<T>. To fix this problem, use the AsParallel() extension method to convert the right data source to System.Linq.ParallelQuery<T>.")>]
static member GroupJoin : System.Linq.ParallelQuery<'Outer> * seq<'Inner> * Func<'Outer, 'Key> * Func<'Inner, 'Key> * Func<'Outer, seq<'Inner>, 'Result> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Linq.ParallelQuery<'Result>

<Extension()>
Public Function GroupJoin(Of TOuter, TInner, TKey, TResult) (outer As ParallelQuery(Of TOuter), inner As IEnumerable(Of TInner), outerKeySelector As Func(Of TOuter, TKey), innerKeySelector As Func(Of TInner, TKey), resultSelector As Func(Of TOuter, IEnumerable(Of TInner), TResult), comparer As IEqualityComparer(Of TKey)) As ParallelQuery(Of TResult)

Type Parameters

TOuter

This type parameter is not used.

TInner

This type parameter is not used.

TKey

This type parameter is not used.

TResult

This type parameter is not used.

Parameters

outer: ParallelQuery<TOuter>

This parameter is not used.

inner: IEnumerable<TInner>

This parameter is not used.

outerKeySelector: Func<TOuter,TKey>

This parameter is not used.

innerKeySelector: Func<TInner,TKey>

This parameter is not used.

resultSelector: Func<TOuter,IEnumerable<TInner>,TResult>

This parameter is not used.

comparer: IEqualityComparer<TKey>

This parameter is not used.

Returns

ParallelQuery<TResult>

This overload always throws a NotSupportedException.

Attributes: ObsoleteAttribute

Exceptions

NotSupportedException

The exception that occurs when this method is called.

Remarks

Applies to

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Correlates in parallel the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys.

public:
generic <typename TOuter, typename TInner, typename TKey, typename TResult>
[System::Runtime::CompilerServices::Extension]
 static System::Linq::ParallelQuery<TResult> ^ GroupJoin(System::Linq::ParallelQuery<TOuter> ^ outer, System::Linq::ParallelQuery<TInner> ^ inner, Func<TOuter, TKey> ^ outerKeySelector, Func<TInner, TKey> ^ innerKeySelector, Func<TOuter, System::Collections::Generic::IEnumerable<TInner> ^, TResult> ^ resultSelector, System::Collections::Generic::IEqualityComparer<TKey> ^ comparer);

public static System.Linq.ParallelQuery<TResult> GroupJoin<TOuter,TInner,TKey,TResult> (this System.Linq.ParallelQuery<TOuter> outer, System.Linq.ParallelQuery<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,System.Collections.Generic.IEnumerable<TInner>,TResult> resultSelector, System.Collections.Generic.IEqualityComparer<TKey> comparer);

public static System.Linq.ParallelQuery<TResult> GroupJoin<TOuter,TInner,TKey,TResult> (this System.Linq.ParallelQuery<TOuter> outer, System.Linq.ParallelQuery<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,System.Collections.Generic.IEnumerable<TInner>,TResult> resultSelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer);

static member GroupJoin : System.Linq.ParallelQuery<'Outer> * System.Linq.ParallelQuery<'Inner> * Func<'Outer, 'Key> * Func<'Inner, 'Key> * Func<'Outer, seq<'Inner>, 'Result> * System.Collections.Generic.IEqualityComparer<'Key> -> System.Linq.ParallelQuery<'Result>

<Extension()>
Public Function GroupJoin(Of TOuter, TInner, TKey, TResult) (outer As ParallelQuery(Of TOuter), inner As ParallelQuery(Of TInner), outerKeySelector As Func(Of TOuter, TKey), innerKeySelector As Func(Of TInner, TKey), resultSelector As Func(Of TOuter, IEnumerable(Of TInner), TResult), comparer As IEqualityComparer(Of TKey)) As ParallelQuery(Of TResult)

Type Parameters

TOuter

The type of the elements of the first sequence.

TInner

The type of the elements of the second sequence.

TKey

The type of the keys returned by the key selector functions.

TResult

The type of the result elements.

Parameters

outer: ParallelQuery<TOuter>

The first sequence to join.

inner: ParallelQuery<TInner>

The sequence to join to the first sequence.

outerKeySelector: Func<TOuter,TKey>

A function to extract the join key from each element of the first sequence.

innerKeySelector: Func<TInner,TKey>

A function to extract the join key from each element of the second sequence.

resultSelector: Func<TOuter,IEnumerable<TInner>,TResult>

A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence.

comparer: IEqualityComparer<TKey>

An IEqualityComparer<T> to hash and compare keys.

Returns

ParallelQuery<TResult>

A sequence that has elements of type TResult that are obtained by performing a grouped join on two sequences.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or action or outer or inner or outerKeySelector or innerKeySelector or resultSelector is null (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

Applies to

Jaa

ParallelEnumerable.GroupJoin Method

Definition

Overloads

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>)

Type Parameters

Parameters

Returns

Exceptions

Remarks

See also

Applies to

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>)

Type Parameters

Parameters

Returns

Exceptions

See also

Applies to

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)

Type Parameters

Parameters

Returns

Exceptions

Remarks

See also

Applies to

GroupJoin<TOuter,TInner,TKey,TResult>(ParallelQuery<TOuter>, ParallelQuery<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)

Type Parameters

Parameters

Returns

Exceptions

See also

Applies to

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