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SharePoint & REST

Posted by Paul on January 10, 2015


SharePoint 2013 supports REST enabled web services.

REST

REST is Representational State Transfer. REST is an architectural style and uses HTTP protocol.

REST provides more interoperability than SOAP (web services).

REST is supposed to be the right way of using HTTP verbs for CRUD operation. (Create – POST, Read – GET, Update – Put, Delete – DELETE) as per protocol definition in RFC 2616.

image

Example

Following are few examples of REST.

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Advantages

Following are the advantages of going with REST:

1. REST web requests are easier to work with

2. No overheads of WSDL creation

3. No overheads of tying up with Service Reference

4. Direct Calls for fetch, insert, update, delete, find operations

5. Better Interoperability supporting different clients on different platforms, programming models

SharePoint & REST

SharePoint 2013 supports REST. This feature requires some inner tweaking of the existing web services.

In SharePoint the usage of HTTP Verbs as per REST is given below:

1. POST for Create

2. GET for Read

3. PUT for Update

4. DELETE for Delete

Operations

Following are the subset of operations we can perform using SharePoint & REST:

1. Create a Site Collection

2. Create a List

3. Create a Content Type

4. Add, Edit, Delete items from a List

5. Get an Item

X-HTTP-Method

Sometimes network firewalls block certain HTTP Verbs like PUT and DELETE. In this case we have to rely on X-HTTP-Method which is actually a header.

Syntax is:

XHTTPMethod = “X-HTTP-Method: ”

(“PUT”

/ “MERGE”

/ “PATCH”

/ “DELETE”)

CRLF

REST services of SharePoint are comparable with Client Side Object Models. We can use REST services as an alternative to CSOM or JSOM code.

References

http://msdn.microsoft.com/en-us/library/office/fp142380(v=office.15).aspx

Summary

In this article we have explored SharePoint & REST.

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