Set read/write files

Command group	Flag affected	Reversible	Execute on client	Platform(s)
Files	YES	YES	NO	All

Syntax

Description

This command sets the file mode of the specified file(s) to read/write. The read/write file mode is the default type of Omnis file; you can read and write data to a read/write file. The other three file modes are read-only, closed and memory-only. If a file is changed to read/write mode when in Prepare for update, the data for the file class is reread from disk. In multi-user systems, read/write files are locked when a Prepare for... command is executed.

The file mode will revert to its former state if you use the command in a reversible block.

In the method editor, a list of files is displayed. You can Ctrl/Cmnd-click on the file names to select multiple names.

Example

# Set the file fSequences to read/write so that we can get the next invoice number

Set read/write files
 
fSequences

Set main file
 
fSequences

Prepare for insert
Find first
Calculate
 
fSequences
.
InvoiceNumber
 as 
fSequences
.
InvoiceNumber
+1

Update files
Set read-only files
 
fSequences