ExtensionMethodsAssumePartitionedByTRecord, TTime, TKey Method Naiad Help

[This is preliminary documentation and is subject to change.]

Instructs downstream operators to assume that the input collection is partitioned according to the given key selector.

Namespace: Microsoft.Research.Naiad.Frameworks.DifferentialDataflow
Assembly: Microsoft.Research.Naiad.DifferentialDataflow (in Microsoft.Research.Naiad.DifferentialDataflow.dll) Version: 0.5.0.0 (0.5.0.0)
Syntax
C#
Copy
public static Collection<TRecord, TTime> AssumePartitionedBy<TRecord, TTime, TKey>(
	this Collection<TRecord, TTime> input,
	Expression<Func<TRecord, TKey>> keySelector
)
where TRecord : Object, IEquatable<TRecord>
where TTime : Object, Time<TTime>
where TKey : Object, IEquatable<TKey>

Parameters

input
Type: Microsoft.Research.Naiad.Frameworks.DifferentialDataflowCollectionTRecord, TTime
The input collection.
keySelector
Type: System.Linq.ExpressionsExpressionFuncTRecord, TKey
Function that extracts a key from each record.

Type Parameters

TRecord
The type of the input records.
TTime
The type of timestamp on each record.
TKey
The key type.

Return Value

Type: CollectionTRecord, TTime
The input collection.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type CollectionTRecord, TTime. 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).
Remarks
This operator supplies metadata for the given collection that allows downstream operators to optimize partitioning. If the input collection is not partitioned according to the given key selector, the behavior of downstream operators is undefined.
See Also

Reference

ExtensionMethods Class
Microsoft.Research.Naiad.Frameworks.DifferentialDataflow Namespace