Hi Everybody,
I am facing long read issue with one of my server (when sparqling). The
server runs:
(1) Virtuoso 5.12.3041
(2) PHP 5.3.2
(3) It uses the default unixodbc drivers that comes with ubuntu
(4) I am using DB.DBA.SPARQL_EVAL to wrap the sparql queries via the
PHP-ODBC API.
So, basically, the problem is that long values get truncated at 4070
bytes (which is Virtuoso's max, after this it is supposed to get into a
blob, but apparently that it has some issues reading it), and then
garbage is added after these 4070 (some kind of stack overflow) bytes.
I tested:
(1) I tested a full set of parameters in odbc_connect (the flag). To
increase the defaultlrl php.ini setting, to play with the binmode, to
use the odbc_longreadlen() api call, etc. Nothing works.
(2) I confirm that I don't have this issue when using iSql/Conductor
(probably since it uses vsp & iodbc)
I want to know:
(1) if there is some ways to fix this using some PHP API
(2) if this is a bug, and if this has been fixed in 5.14
(3) if this will only works with iodbc drivers
Thanks!
Take care,
Fred
