By John Shaw, Gary Evans
Pro ADO.NET info prone: operating with RESTful Data is geared toward builders drawn to benefiting from the REST–style facts providers that ADO.NET facts prone (formerly code–named Astoria) presents. The e-book exhibits how you can contain ADO.NET facts companies right into a wide selection of universal environments, together with BizTalk, Ajax and Silverlight patron functions. the fabric is meant for pro builders who're happy with the .NET 3.5 Framework yet are coming to ADO.NET info providers for the 1st time and wish to appreciate tips on how to combine it into their very own functions and company ideas. The booklet is packed complete with vast real–world options and routines, making sure you stroll away with a deep realizing of ways to exploit ADO.NET info prone on your top advantage.
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This problem is combated by caching requests on the client using a data context to avoid repeated requests and smaller payloads to the server. C HA P TER 2 N A D D R E S S I N G R E S T F U L A D O . N E T D A T A S E R V I C E S Getting Started: Setting Up the Environment The first step in creating your first data service is to ensure that you have all the prerequisites that are required for your machine. Throughout this book, you will undertake two types of development exercises: local and enterprise.
When creating the service, you need to surface an underlying data source that the service operates on. To keep this exercise simple, you will use the Northwind database, which is included in most Microsoft examples. qopkiano, Kn`ano, Kn`an@ap]eho, and Oqllheano as shown in Figure 2-4. Please refer to this model to understand the shape of the responses from the service. You will use the Entity Framework, which will provide an autogenerated LINQ to Entities layer. The completed Northwind data service can be downloaded from the Apress web site (dppl6++sss* ]lnaoo*_ki+^kkg+okqn_a_k`a); you’ll find it in the Jknpdsej`Oanre_a folder.
The extra work of generating entity types for your data source is alleviated by the provision of tools to automatically generate these classes based on the structure of the data source itself. From within Visual Studio you can generate LINQ to SQL classes from a SQL Server database and use the visual designer to manipulate the created classes. NET Entity Framework provides a designer for creating a conceptual model of your entities, which inherit from EMqanu]^ha8P:. kjpatp for LINQ to 23 24 C HAPTER 1 N T HE FOU NDA TIONS OF A DO.
Pro ADO.NET Data Services: Working with RESTful Data by John Shaw, Gary Evans