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首页SAP Fiori Odata 实施步骤
详细分布截图。 SAP Fiori OData Services. OData is used to define best practices that are required to build and consume RESTful APIs. It helps you to find out changes, defining functions for reusable procedures and sending batch requests etc.
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SAP Fiori OData Services
OData is used to dene best practices that are required to build and consume RESTful APIs. It helps
you to nd out changes, dening functions for reusable procedures and sending batch requests etc.
Some of the important features are −
OData provides facility for extension to fulll any custom needs of your RESTful APIs.
REST stands for Representational State Transfer and it is sometimes spelled as "ReST".
It relies on a stateless, client-server, cacheable communication protocol. In virtually all cases,
the HTTP protocol is used.
REST is dened as an architecture style for designing network applications.
OData helps you focus on your business logic while building RESTful APIs without having to
worry about the approaches to dene request and response headers, status codes, HTTP
methods, URL conventions, media types, payload formats and query options etc.
OData RESTful APIs are easy to consume.
OData Service Life Cycle
The OData service life cycle includes span of an OData service. Given below are the key steps to be
considered in an OData Service Life Cycle.
Activation of OData service.
Maintaining OData service.
Maintaining of models and services, up to the cleanup of the metadata cache.
RESTful applications use HTTP requests to post data to create or update, read data and delete
data. REST uses HTTP for all four CRUD (Create/Read/Update/Delete) operations.
REST is a lightweight alternative to mechanisms like RPC (Remote Procedure Calls) and Web
Services.
REST
REST is dened as an option for web services and Remote Procedure calls. It is used for designing
network applications.
REST services like a web services and supports below features −
Work with rewalls
Language-independent
Standards-based
Not Platform dependent
REST Architecture
Given below are the components of the REST Architecture.
Resources
In REST, both the state and the functionality are presented as resources. Resources are the key
element of a RESTful design, as opposed to "methods" or "services" used in RPC and SOAP Web
Services.
RPC calls like "getProductName" and "getProductPrice" are not used in REST. You view the
product data as a resource and this resource should contain all the required information.
Web of Resources
It means that a single resource should not contain detailed data and it contains links to additional web
pages.
Client-Server
In REST client–server model, one component server can be other component client.
No Connection State
Each request should contain details about the connection to each client and should not reply on the
previous connections to the same client.
Cachable
The protocol must allow the server to explicitly specify which resources may be cached, and for how
long.
Proxy Servers
To improve performance and scalability, Proxy servers can be used. Any standard HTTP proxy can be
used.
OData Service using SAP NetWeaver Gateway Service Builder
Use the T-Code: SEGW
A new window will open. Click Create Project.
Now, follow the steps given below −
Enter the Project name as shown in the image below. It should be unique and should not
contain any special characters.
Enter the description of the project as it is a mandatory eld.
Enter the di9erent attributes such as Project Type,Generation Strategy.
Select Package or click the local object, if you want to create this locally.
Once you click the local object, Service builder will create a new project with empty folder structure.
All these are automatically created with a new project and click the save icon.
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