LINQ

Stefan Flöring

Department für InformatikCarl von Ossietzky Universität Oldenburg

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.NET Language Integrated Query

LINQLanguage Integrate Query

LINQ toObjects

LINQ to SQL

LINQ to XML

C# 3.0 VB 9.0 Weitere (F# …)

Relational

Objekte

<xml

<customer/></xml>

XML

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Demo

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Zusammenfassung

from c in db.Customerswhere c.City == „London“Select c.CompanyName

Anwendung

LINQ to SQL

SQLServer

Enumerate

SQL Query Oder SProc

Tupel

SELECT CompanyNameFROM CustomerWHERE City = „London“

db.Customers.Add(d);c2.City = „Aurich“;

SubmitChanges()

DML

INSERT INTO Customer…UPDATE Customer…

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using System.Concurrency; …for (int i = 0; i < 100; i++) { a[i] =

a[i]*a[i]; }

Parallel.For(0, 100, delegate(int i) { a[i] = a[i]*a[i];

});

…var query = (from c in db.Customers

select c).AsParallel();

Parallel FX und Parallel LINQ