1.
REST & OData
Sanjay Patel

2.
WHAT WILL BE COVERED
• What is REST?
• What is OData?
• OData Architecture Overview
• OData Producers ,Consumers and Live OData Services
• Configure SharePoint 2010 to work with OData / Tools
• Demo#1- CRUD Operations on SharePoint lists using
Odata
• Demo#2 - Create List Items using jQuery
• Q & A?

3.
REST - REPRESENTATIONAL STATE TRANSFER
REST is an architecture style NOT a standard but it uses
standards
REST is the Service on the Web
It uses HTTP protocol
It uses URI for resource identification (REST)
It provides Uniform Interface

4.
WHAT IS ODATA?
It is a protocol based on web standards
It is used for querying and updating data
It uses HTTP protocol
It uses ATOM and JSON web message formats
It uses URI for resource identification (REST)
It provides filtering, sorting, paging etc. OOTB

5.
UNIFORM OPERATIONS
HTTP POST
• CREATE Data in Data Source
HTTP GET
• RETERIVE Data from Data Source
HTTP PUT
• UPDATE Data in Data Source
HTTP DELETE
• DELETE Data in Data Source

6.
UNIFORM REPRESENTATIONS OF DATA
Message
Format JSON for
AJAX
JSON ATOM clients
• Text based Format • XML Based
• Comes from Format ATOM for
JavaScript world • Originally
• Can be consumed by competed with any type
many languages RSS
• Same as ATOM with
less <> and more []
• Boils down to
lists of data
of clients

7.
WHAT PROBLEM ODATA IS TRYING TO SOLVE?
• What is the common problem? - Scattered data all over in different data sources and
not a common way to access them
• The Solution is OData – It defines a common approach to access diverse data

8.
HOW ODATA WORKS?
• OData Data Model – Provides a way to structure data, uses EDM same as Microsoft
Entity Framework
• OData Service – Implements OData protocol, It also provides abstractions of the OData
data model to translate data between its underlying form
• OData Protocol – Set of RESTful interactions like CRUD operations using Odata defined
query language
• OData Client Library – Makes life easy for developers by providing them a way to access
data via the OData protocol

9.
UNIFORM URI CONVENTIONS/DEMO
System Descriptions Examples
Query
Options
$filter Applies the filtering condition http://services.odata.org/Northwind/Northwind.svc/Cus
tomers?$filter=substringof('Alfreds', CompanyName) eq
true
$top Returns top number of data items http://services.odata.org/OData/OData.svc/Products?$t
op=5
$skip Skips specified number of data items http://services.odata.org/OData/OData.svc/Categories(1
)/Products?$skip=2
$orderby Sort data items http://services.odata.org/OData/OData.svc/Products?$o
rderby=Rating
$expand Request set of related entities to be http://services.odata.org/OData/OData.svc/Categories?$
retrieved expand=Products
$select Select specified properties only for the http://services.odata.org/OData/OData.svc/Products?$s
data items elect=Price,Name
$count Returns the total count of all data http://services.odata.org/OData/OData.svc/Categories(1
items )/Products/$count
$format Request data in the specified format http://services.odata.org/OData/OData.svc/Products?$f
ormat=atom

10.
UNIFORM URI CONVENTIONS (CONTINUE…)
Operators Descriptions Examples
Eq Equal http://services.odata.org/Northwind/Northwind.svc/Suppliers?$filter =
City eq 'London'
Ne Not equal http://services.odata.org/Northwind/Northwind.svc/Suppliers?$filter =
City ne 'London'
Gt Greater than http://services.odata.org/Northwind/Northwind.svc/Products?$filter =
UnitPrice gt 10
Ge Greater than or http://services.odata.org/Northwind/Northwind.svc/Products?$filter =
equal UnitPrice ge 20
Lt Less than http://services.odata.org/Northwind/Northwind.svc/Products?$filter =
UnitPrice lt 20
Le Less than or http://services.odata.org/Northwind/Northwind.svc/Products?$filter =
equal UnitPrice le 10
And Logical and http://services.odata.org/Northwind/Northwind.svc/Products?$filter =
UnitPrice le 10 and UnitsInStock gt 10
Or Logical or http://services.odata.org/Northwind/Northwind.svc/Products?$filter =
UnitPrice le 10 or UnitsInStock gt 10
Not Logical negation http://services.odata.org/Northwind/Northwind.svc/Products?$filter =
not startswith(ProductName,'Ch')

11.
ODATA Producers and Consumers
PRODUCER CONSUMER
SharePoint 2010, IBM Web Browsers , ODATA Explorer ,
Sphere , SSRS, Windows Azure Excel 2010 , LINQPAD, Sesame
table storage etc. OData Browser
Live OData Services: Netflix, OGDI,
Pluralsight, TechEd2010, NerdDinner
More details: http://www.odata.org/ecosystem

12.
CONFIGURE SHAREPOINT 2010 WITH ODATA / TOOLS
• Install ADO.NET Data Services (CTP 2) to avoid 404 Errors -
http://www.microsoft.com/download/en/details.aspx?id=23113
• Where is your Data Service Endpoint? –
http://<sitename>/_vti_bin/ListData.svc
• Install Open Data Protocol Visualizer -
http://visualstudiogallery.msdn.microsoft.com/f4ac856a-796e-4d78-9a3d-
0120d8137722/
• Fiddler2 (Web debugging tool) – http://www.fiddler2.com/fiddler2/
• cURL (Command line tool for CRUD operations using OData) -
http://curl.haxx.se/

13.
DEMO – LET’S SEE ODATA WORKING IN SHAREPOINT 2010!
• CRUD Operations on
Demo#1 SharePoint lists using OData
Demo#2 • Create List Items using jQuery

14.
Thanks a lot!
Q&A
Contact Information:
http://www.neudesic.com
Sanjay.Patel@neudesic.com
http://sanjaypatelblogs.wordpress.com/
http://www.linkedin.com/pub/sanjay-patel/4/82/16a
@sanjay18283