Scrolling Through a Database File
Use
You request output of the rest of the content of an opened database file. Use the
<file_handle> output by the system when you were opening the database file.Prerequisites
You have opened a database file. Keyword
CONTINUE in the reply shows that you have not yet read the whole file.You have the DBM operator authorization
DBFileRead.Syntax
file_getnext <file_id> <file_handle>
Options for <file_id>
see:
Database FilesReply
Output in ASCII Mode
OK<NL>
[CONTINUE|END]<NL>
<file_length>:20<data_length>:20<NL>
<data><NL>
<data><NL>
...
Output in Binary Mode
OK<NL>
[CONTINUE|END]<NL>
<file_length><data_length><NL>
<data><NL>
Values for the individual fields of the reply
|
END |
Contents of the file have been completely transferred, file is automatically closed |
|
CONTINUE |
File has additional entries that have not been transferred due to the limited size of the reply memory. Call these by entering the command used above again |
|
<file_length> |
File length |
|
<data_length> |
Data length |
|
<data> |
Data value |
The total length of file is not determined again and is therefore set to
0.