4D v13.4
RELOAD EXTERNAL DATA
- 4D Language Reference
-
- Structure Access
-
- Structure Access Commands
- CREATE INDEX
- DELETE INDEX
- Field
- Field name
- Get external data pathNew
- GET FIELD ENTRY PROPERTIES
- GET FIELD PROPERTIES
- Get last field number
- Get last table number
- GET MISSING TABLE NAMES
- GET RELATION PROPERTIES
- GET TABLE PROPERTIES
- Is field number valid
- Is table number valid
- REGENERATE MISSING TABLE
- RELOAD EXTERNAL DATANew
- SET EXTERNAL DATA PATHNew
- SET INDEX
- Table
- Table name
RELOAD EXTERNAL DATA
| RELOAD EXTERNAL DATA ( aField ) | ||||||||
| Parameter | Type | Description | ||||||
| aField | Text, BLOB, Picture |
|
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).
Product: 4D
Theme: Structure Access
Number:
1135
Created: 4D v13
