Projection Class

Provides methods to project properties into new values. The methods are intended to be used with the methods provided by the IFulltextQueryTDocument interface.

Inheritance Hierarchy

SystemObject
SphinxConnector.FluentApiProjection

Namespace: SphinxConnector.FluentApi
Assembly: SphinxConnector (in SphinxConnector.dll) Version: 5.4.1

Syntax

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public static class Projection

Public NotInheritable Class Projection

The Projection type exposes the following members.

Methods

	Name	Description
	AvgTSource	Computes the average of a sequence of values.
	Count	Computes the number of occurences of a value in a sequence of values.
	CountTResult	Computes the number of occurences of a value in a sequence of values.
	CountDistinctTSource	Computes the number of distinct occurences of a value in a sequence of values.
	MaxTResult	Computes the maximum of a sequence of values.
	MinTResult	Computes the minimum of a sequence of values.
	SumTResult	Computes the sum of a sequence of values.

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Examples

Suppose you have the following class representing a document in your index:
The following code computes the number of products in a category that match a query:

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using (IFulltextSession fulltextSession = fulltextStore.StartSession())
{
    var results = fulltextSession.Query<Product>().
                                  Match("a query").
                                  GroupBy(p => p.CategoryId).
                                  Select(p => new
                                  {
                                      p.CategoryId,
                                      ProductsInCategory = Projection.Count()
                                  }).
                                  ToList();
}

Reference

SphinxConnector.FluentApi Namespace