242 #ifndef HAVE_LIBPROTOBUF
243 elog(ERROR,
"ST_AsMVT: Compiled without protobuf-c support");
246 MemoryContext aggcontext, oldcontext;
248 elog(DEBUG2,
"%s called", __func__);
249 if (!AggCheckCallContext(fcinfo, &aggcontext))
250 elog(ERROR,
"%s called in non-aggregate context", __func__);
252 oldcontext = MemoryContextSwitchTo(aggcontext);
254 MemoryContextSwitchTo(oldcontext);
256 PG_RETURN_POINTER(ctx);
mvt_agg_context * mvt_ctx_deserialize(const bytea *ba)