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cac7658205
This provides a mechanism for specifying conversions between SQL data types and procedural languages. As examples, there are transforms for hstore and ltree for PL/Perl and PL/Python. reviews by Pavel Stěhule and Andres Freund
33 lines
606 B
C
33 lines
606 B
C
#include "postgres.h"
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#include "fmgr.h"
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#include "plpython.h"
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#include "ltree.h"
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PG_MODULE_MAGIC;
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PG_FUNCTION_INFO_V1(ltree_to_plpython);
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Datum ltree_to_plpython(PG_FUNCTION_ARGS);
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Datum
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ltree_to_plpython(PG_FUNCTION_ARGS)
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{
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ltree *in = PG_GETARG_LTREE(0);
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int i;
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PyObject *list;
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ltree_level *curlevel;
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list = PyList_New(in->numlevel);
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curlevel = LTREE_FIRST(in);
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for (i = 0; i < in->numlevel; i++)
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{
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PyList_SetItem(list, i, PyString_FromStringAndSize(curlevel->name, curlevel->len));
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curlevel = LEVEL_NEXT(curlevel);
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}
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PG_FREE_IF_COPY(in, 0);
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return PointerGetDatum(list);
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}
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