The Beas Service Layer supports ODATA versions 2, 3 and 4 with limited compatibility. Some functions are not available, but additional functions help create applications.
Requirements
•Beas WEB Sever
•Postman (or another tool)
How to work with postman
•Knowledge in using ODATA
Process
1.Start the Beas WEB Server in Beas Tools>WEB Server.
2.Activate "Disable Authorization" or see authorization.
3.Download and start Postman (https://www.getpostman.com/downloads/).
4.Insert the correct URL in Postman.
Scheme: http
Host: The IP-Address, in this example: 192.168.178.64
Port: The Port, in this example: 8080
Service Root: Use odata2, odata3 or odata4
ResourcePath/Options: The resource and query options
5.Test the connection (insert your IP/Port-Address) + "odata4" + the command, for example "$metadata":
Examples using ODATA with the Beas Service Layer
Example |
Result |
Item("A001") |
Returns all fields from Item A001 |
Item("A001")/ItemName |
Returns only the ItemName in the defined format |
Item("A001")/ItemName/$value |
Returns only the ItemName in text format |
Item() |
Returns all fields for all items |
Item("A001")?$select=ItemCode,ItemName |
Returns the ItemCode and ItemName fields for item A001 |
Item("A001")?$select=ItemCode,ItemWareHouse&$expand=ItemWareHouse |
Returns all warehouse information as a sub-structure for item A001 {"ItemCode":"A001",ItemWareHouse:[ |
Item("A001")?select=ItemCode,ItemWareHouse/WhsCode,ItemWareHouse/OnHand Difference: There is no $expand function inside the command, which makes this command ~20% faster per result line. |
Returns all warehouse information in a flat JSON file {"ItemCode":"A001","WhsCode":"01","OnHand":10.5}, |
Item("A001")?select=ItemCode,ItemWareHouse/WhsCode,ItemWareHouse/OnHand&$expand=ItemWareHouse&$format=jsonarray |
Returns all warehouse information in a flat JSON file ["A001","01",10.5],["A001","02",5.3] |
HTTP Header
From the client:
Keyword |
Description |
accept |
text/html application/xml, appication/xhtml+xml, xml application/json, json
Beas always uses the last defined format. In this example Beas uses the JSON format: accept=application/atom+xml,application/json
There is currently no metadata support |
accept-charset |
Not supported. Beas always uses udf-8. |
accept-encoding |
Not supported. |
accept-language |
Accepted language. Current only en-US is accepted. |
authorization |
Currently not supported. |
Cache-Control |
Beas does not work with a cache system in the ODATA protocol. |