Locations for simple-large-object data
Before your HCL OneDB™ ESQL/C program accesses a simple-large-object column, it must determine where the simple-large-object data is located.
To specify whether the simple large object is located
in memory or in a file, specify the contents of the loc_loctype field
of the locator structure. The following table shows the possible locations
for simple-large-object data.
| Value of loc_loctype field | Location of simple-large-object data | See |
|---|---|---|
| LOCMEMORY | In memory | ids_esqlc_0203.html#ids_esqlc_0203 |
| LOCFILE | In an open file | ids_esqlc_0212.html#ids_esqlc_0212 |
| LOCFNAME | In a named file | ids_esqlc_0215.html#ids_esqlc_0215 |
| LOCUSER | At a user-defined location | ids_esqlc_0218.html#ids_esqlc_0218 |
Set loc_loctype after you declare the locator variable and before this declared variable receives a simple-large-object value.
The locator.h header file defines the LOCMEMORY, LOCFILE, LOCFNAME, and LOCUSER location constants. In your HCL OneDB ESQL/C program, use these constant names rather than their constant values when you assign values to loc_loctype.
In a client-server environment, HCL OneDB ESQL/C locates the simple large object on the client computer (the computer on which the application runs).