Re: Returning Vector of Pairs with a PostgreSQL C Extension Function

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От Pavel Stehule
Тема Re: Returning Vector of Pairs with a PostgreSQL C Extension Function
Дата
Msg-id CAFj8pRDLd+8Uc26vXCV_gU-8GvdwtP-S2Do-YcpwBoiwZt2fwA@mail.gmail.com
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Ответ на Re: Returning Vector of Pairs with a PostgreSQL C ExtensionFunction  (TalGloz <glozmantal@gmail.com>)
Ответы Re: Returning Vector of Pairs with a PostgreSQL C ExtensionFunction  (TalGloz <glozmantal@gmail.com>)
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2018-08-27 14:40 GMT+02:00 TalGloz <glozmantal@gmail.com>:
It looks like changing the

elements[0] = CStringGetDatum(localT1.c_str());
elements[1] = CStringGetDatum(localT2.c_str());

to:

elements[0] = PointerGetDatum(cstring_to_text(localT1.c_str()));
elements[1] = PointerGetDatum(cstring_to_text(localT2.c_str()));

Solved the problem. If anyone thinks that there is a better way please tell
me.

There is not better or worst way - you have to use just correct way, that is one

There are already prepared macros

#define CStringGetTextDatum(s) PointerGetDatum(cstring_to_text(s))
#define TextDatumGetCString(d) text_to_cstring((text *) DatumGetPointer(d))

you can use it.

Regards

Pavel


Best regards,
Tal



--
Sent from: http://www.postgresql-archive.org/PostgreSQL-general-f1843780.html


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