Hello Georg
This is a great news. since we need more binding.
I do not really know the answer but I’m sure the guys will help you.
Now just a question: what is the definition of MYSQL
that you mentioned in
„MYSQL * mysql_init(NULL)“
S.
> On 21 Jun 2020, at 11:27, Georg Hagn <georg.h...@gmail.com> wrote:
>
> For an exercise with uFFi i am try an C-Connector for MariaDB like
> Garage or UBDC
> As in "Unified FFI Februar 12 2020" I made Helper-classes:
>
> FFILibrary subclass: #MariaDBLibC
>
> FFIOpaqueObject subclass: #MariaDBHandle
> MariaDBHandle >> unixModuleName [
> ^ '/usr/lib/x86_64-linux-gnu/libmariadb.so'
> ]
>
> and a class
>
> Object subclass: #MariaDBDriver
> instanceVariableNames: 'connectionHandle'
>
> "Accessors"
> MariaDBDriver >> connectionHandle [ ^ connectionHandle ]
> MariaDBDriver >> connectionHandle: aHandle [ connectionHandle := aHandle ]
> MariaDBDriver class >> ffiLibrary [ ^ MariaDBLibC ]
>
> "API Methods"
> MariaDBDriver >> clientInfo [ ^ self class clientInfo ]
>
> MariaDBDriver class >> clientInfo [
> ^ self ffiCall: #(String mysql_get_client_info(void))
> ]
>
> For a first simple Test I choosed the c-api-funtion:
> „const char * mysql_get_client_info(void )“
>
> In Playground I executed:
> driver := MariaDBDriver fromConnectionString:
> 'mariaDB://localhost:5432/sodbxtest?&user=sodbxtest&password=sodbxtest'.
>
> driver clientInfo inspect.
> And I get the expected result: String „10.2.9“
>
> But the second test with c-api-funtcion fails
> „MYSQL * mysql_init(NULL)“
>
> MariaDBDriver >> init [
> | aNullHandle |
> aNullHandle := ExternalAddress null.
> self connectionHandle: (self class init: aNullHandle).
> ]
>
> MariaDBDriver class >> init: aNullHandle [
> ^ self ffiCall: #(MariaDBHandle * mysql_init(ExternalAddress aNullHandle)).
> ]
>
> In Playground I again executed:
> driver := MariaDBDriver fromConnectionString:
> 'mariaDB://localhost:5432/sodbxtest?&user=sodbxtest&password=sodbxtest'.
>
> driver init inspect.
> " A call to an external function failed"
>
> Any ideas what is wrong??
>
> Thanks
> Georg
>
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