Transfer data in large objects
Use the BYTE and TEXT data types to transfer large
objects (LOBs) with a Genero RESTful web service.
Specify an input or return parameter of a Web service function as a TEXT or BYTE type in order to transfer a large object (LOB) to a web service server or client.
Which object to use
| Situation | Data type to use |
|---|---|
| Your web service transfers binary file
contents. For example: an image, PDF, zip file, etc. |
BYTE |
| You have a binary large object (BLOB) stored in a table and your web service must write it
out to a file. For example, an image. |
BYTE |
| Your web service transfers ASCII content.
For example: text, HTML, etc. |
TEXT |
This method transfers data in the message body.
Important: To send a LOB
from a REST client function you must,
LOCATE it in memory or file to load the data before calling the server function. On
the server REST function, you do not need to locate the input parameters
TEXT/BYTE types as they are implicitly located in memory when the
server function is called. See code samples in Upload a large object in the request body.