Argox PA-20 Basic Programming Manual - Manual (Page 83)

PT-Basic Programming Manual Ver. 1.00 82/143
3.15.2 DBMS Commands
DBMS_INIT_SEARCH
Purpose： To initiate the file search in disk.
Syntax： A%=DBMS_INIT_SEARCH(FilePath$ , DBMSID% , S$ ,
N1% ,N2% ,N3%)
Example： Result%=DBMS_INIT_SEARCH("C:\DATA\variable.DAT",1,",",
1,0,3)
Result
%=DBMS_INIT_SEARCH("C:\DATA\fix.DAT",2,"6,8,8",0,22,3)
Description： A% is an integer variable to be assigned to the result.
A% Meaning
0 DBMS initialization fail
1 DBMS initialization OK
5 Open file error
6 The DBMS ID is illegal.
7 DBMS ID already used.
8 The record type is illegal.
9 The field number exceeds 20.
Several key arguments as below:
FilePath$ DBMS file path
DBMSID
%
DBMS ID (1~10)
S$ This argument has two kinds of meanings.
 When search for regular length, it needs to
insert the unsigned char array; the array
represents the length of every field.
 When search for variable length, it needs to
insert one character to represent separate
symbol.
N1%
 When N1%=0, search for regular length. It
has no separate symbols between different
fields.
 When N1%=1, search for variable length. It
needs a separate symbol between different
fields.
N2%
This argument is each record‟s length.
 When N1%=0, needs to insert this value,