4D v13.4

RELOAD EXTERNAL DATA

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4D v13.4
RELOAD EXTERNAL DATA

RELOAD EXTERNAL DATA 


 

RELOAD EXTERNAL DATA ( aField ) 
Parameter Type   Description
aField  Text, BLOB, Picture in Field for which to set the storage location

The RELOAD EXTERNAL DATA command reloads the contents in memory of an external storage file associated with a BLOB, Picture or Text type field.

This command is useful when the field of a record already loaded in memory is modified on the disk by another application (external storage files for fields are always writable). For example, a picture used in a Picture field can be modified by a graphic editor then saved on disk.

You then need to reload the data using the RELOAD EXTERNAL DATA command for two reasons:

  • To update the contents of the field if it displayed in a form.
  • To avoid replacing the modified picture on disk by the "former" version found in memory when the record is saved.

Note: The RELOAD EXTERNAL DATA command only works on a local 4D or on 4D Server. You cannot reload a field individually with 4D in remote mode. In this context, you have to reload all the records (using the LOAD RECORD command for example).

 
PROPERTIES 

Product: 4D
Theme: Structure Access
Number: 1135

 
INDEX

Alphabetical list of commands

 
HISTORY 

New
Created: 4D v13

 
SEE ALSO 

SET EXTERNAL DATA PATH