OData Introduction and Impact on API Design (Webcast)

OData and Impact onAPI DesignWithAnant Jhingran Brian Pagano Greg Brail@jhingran @brianpagano @gbrail

groups.google.com/group/api-craft

youtube.com/apigee

slideshare.net/apigee

 Introductions OData Primer API Design The OData Community Conclusions

@jhingran @brianpagano @gbrail

Interactions are shifting to edge of enterprise Social Business Networks Networks Your apps Your Your Data Your Web Site Company Your Store APIsWhat the means is thatyou’ve think about “data” –what you expose, and what Appsyou collect “differently” - API-centric

Exposing data attracts business to the core even if data is not your core businessSee Amundsen’s Dogs, Information Halos and APIs:The epic story of your API Strategy »http://blog.apigee.com/detail/api_strategy_talk_web_2.0/

Exposing Data is more than the “R” of CRUD in REST GOOD CLEAN API’S M(E/A)SS OF INTERCONNECTED DATA How do you go from the m(e/a)ss to clean APIs?

Two schools of thought REST APIS REST APIS 1 N Table1 Table2 “Linked Data” view – individual“Schema-ed” Relational or objects, with properties andRelational-like view of “data” interconnections

REST APIS 1 NToday we’ll discuss the “Schema-ed” view of theworld, and in particular, the OData approach

Let’s look at OData requests and responses.

OData by ExampleSQL Query OData Requestselect * from products where id = 1 /Products(1)select * from products /Products?$filter=name eq ‘Milk’where name = ‘Milk’select name from products /Products?$select=nameselect * from products order by name /Products?$orderby=nameselect * from products offset 10 limit 10 /Products?$top=10&$skip=10select * from prices r, products p /Products(1)?$expand=Priceswhere r.id = p.id (* sort of)

Filters/Categories?$filter=Name eq ‘Dairy’Logical Operatorseq ne gt ge lt le eq or andArithmetic Operatorsadd sub mul div modParenthesis Operator()Canonical Functionssubstrof endswith startswithlength indexof replace substring tolowertoupper trim concat year years month daydays hour hours minute minutes secondseconds round floor ceiling isof cast

Format/Categories?$format=json *atom json xml(plus any other IANA-defined media types)*If the $format query option is present in a request URI it takesprecedence over the value(s) specified in the Accept request header.

Metadata<edmx:Edmx Version="1.0" xmlns:edmx="http://schemas.microsoft.com/ado/2007/06/edmx"> <edmx:DataServices xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" m:DataServiceVersion="1.0"> <Schema Namespace="NorthwindModel" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://schemas.microsoft.com/ado/2008/09/edm"> <EntityType Name="Category"> <Key> <PropertyRef Name="CategoryID" /> </Key> <Property Name="CategoryID" Type="Edm.Int32" Nullable="false" p8:StoreGeneratedPattern="Identity" xmlns:p8="http://schemas.microsoft.com/ado/2009/02/edm/annotation" /> <Property Name="CategoryName" Type="Edm.String" Nullable="false" MaxLength="15" Unicode="true" FixedLength="false" /> <Property Name="Description" Type="Edm.String" Nullable="true" MaxLength="Max" Unicode="true" FixedLength="false" /> </EntityType> </Schema> </edmx:DataServices></edmx:Edmx>

Libraries

from http://www.odata.org/libraries

WTF is WCF?

Who is using OData?

Who created OData?

How does OData compare to other approaches?

OData or Not? Odata Request Web API Style /Products(1) /Products/1 /Products?$filter=name eq ‘Milk’ /Products?name=Milk /Products/1?$select=name /Products/1/name /Products?$orderby=name /Products?orderby=name /Products?$top=10&$skip=10 /Products?offset=10&limit=10 /Products(1)?$expand=Prices /Products/1?expand=Prices

 OData GData SOAP Observed API Patterns on the Web

How active is community support for OData?

Is it time to rally around a standard like OData?Or is too early?

Should one implement OData?

Questions

THANK YOUQuestions and ideas to:groups.google.com/group/api-craftAnant Jhingran Brian Pagano Greg Brail@jhingran @brianpagano @gbrail

http://blog.apigee.com	2493
http://blog.local	209
http://apigee.com	122
http://blog-dev.apigee.com	94
http://feeds.apigee.com	61
http://blog.sonoasystems.com	14
http://mktg-dev.wearepropeople.md	7
http://webcache.googleusercontent.com	2
http://blog-dev.wearepropeople.md	1
http://www.hanrss.com	1
http://conversation.ecairn.com	1
http://ip54.216-86-157.static.steadfast.net	1

OData Introduction and Impact on API Design (Webcast)

by Apigee

Accessibility

Categories

Upload Details

Usage Rights

12 Embeds 3,006

Statistics