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Persistence

General questions regarding the development with JVx.

Persistence

Postby lucdep » Mon Dec 17, 2018 12:04 pm

Hello,

It is not clear to me when VisionX writes the data entered in a workscreen effectively to the database. I have remarked on many occasions that data inserted or updated in a screen are not available for the HTML client or are not visible when querying the Postgres database in pgAdmin.

Luc
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Re: Persistence

Postby Support@SIB » Mon Dec 17, 2018 1:54 pm

This is independent or VisionX. The JVx framework is used in the background!

Usually, a DataBook writes all data to the storage if:

(writeback isolation level: DATA_ROW)

  • you change the selected record/row#
  • you call save...

(writeback isolation level: DATASOURCE)

  • you call save...

Usually, a workscreen will call save on close.
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Re: Persistence

Postby Support@SIB » Mon Dec 17, 2018 1:57 pm

The storage sends data to the data layer, e.g. a database if you use a DBStorage.

It depends on the storage if it sends the data immediately or delayed. The standard DBStorage sends data immediately to the database.
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