DryadLinqQueryable.RangePartition(TSource, TKey) Method (IQueryable(TSource), Expression(Func(TSource, TKey)), TKey[])

DryadLinqQueryableRangePartitionTSource, TKey Method (IQueryableTSource, ExpressionFuncTSource, TKey, TKey)

DryadLINQ documentation

Range partition a dataset using an array of partition keys.

Namespace: Microsoft.Research.DryadLinq
Assembly: Microsoft.Research.DryadLinq (in Microsoft.Research.DryadLinq.dll) Version: 0.2.1.0 (0.2.1.0)

Syntax

C++

Copy

public static IQueryable<TSource> RangePartition<TSource, TKey>(
	this IQueryable<TSource> source,
	Expression<Func<TSource, TKey>> keySelector,
	TKey[] rangeSeparators
)

<ExtensionAttribute> 
Public Shared Function RangePartition(Of TSource, TKey) ( 
	source As IQueryable(Of TSource),
	keySelector As Expression(Of Func(Of TSource, TKey)),
	rangeSeparators As TKey()
) As IQueryable(Of TSource)

public:
[ExtensionAttribute]
generic<typename TSource, typename TKey>
static IQueryable<TSource>^ RangePartition(
	IQueryable<TSource>^ source, 
	Expression<Func<TSource, TKey>^>^ keySelector, 
	array<TKey>^ rangeSeparators
)

Parameters

source: Type: System.LinqIQueryableTSource
The dataset to be partitioned
keySelector: Type: System.Linq.ExpressionsExpressionFuncTSource, TKey
The funtion to extract the key from a record
rangeSeparators: Type: TKey
An array of partition keys, either in ascending or descending order

Type Parameters

TSource: The type of the records in the dataset
TKey: The type of the key on which the partition is based

Return Value

Type: IQueryableTSource
An IQueryable partitioned according to the specified range keys

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQueryableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

DryadLinqQueryable Class

RangePartition Overload

Microsoft.Research.DryadLinq Namespace