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author | i7tiol |
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date | Sat, 27 Feb 2016 11:21:29 +0000 |
parents | 1af86934c14e |
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/* Copyright (C) 2012-2016 Olaf Till <i7tiol@t-online.de> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; If not, see <http://www.gnu.org/licenses/>. */ #ifndef __OCT_PQ_COMMAND__ #define __OCT_PQ_COMMAND__ #include <octave/oct.h> #include <octave/ov-struct.h> #include <octave/Cell.h> #include "pq_connection.h" #include "error-helpers.h" class command { public: command (octave_pq_connection_rep &connection, std::string &cmd, Cell &rtypes, std::string &who); command (octave_pq_connection_rep &connection, std::string &cmd, Cell ¶ms, Cell &ptypes, Cell &rtypes, std::string &who); ~command (void) { if (res) PQclear (res); if (! all_fetched) { while ((res = PQgetResult (cptr))) PQclear (res); } } typedef int (*to_octave_array_fp_t) (const octave_pq_connection_rep &, const char *, octave_value &, int, oct_pq_conv_t *); typedef int (*to_octave_composite_fp_t) (const octave_pq_connection_rep &, const char *, octave_value &, int, oct_pq_conv_t *); int all_results_fetched (void) { return all_fetched; } octave_value process_single_result (void) { Cell c; // inlining should prevent the additional copy return process_single_result ("", "", c, c, false, false); } octave_value process_single_result (const std::string &infile, const std::string &outfile, const Cell &cin_data, const Cell &cin_types, bool cin_with_oids, bool cin_from_variable); int good (void) {return valid;} private: octave_map get_elements_typeinfo (oct_pq_conv_t *conv, bool &err); void check_first_result (void) { if (! res) { valid = 0; c_verror ("%s: could not execute command: %s", caller.c_str (), PQerrorMessage (cptr)); } else if ((state = PQresultStatus (res)) == PGRES_EMPTY_QUERY) { valid = 0; c_verror ("%s: empty command", caller.c_str ()); } } octave_value command_ok_handler (void) { char *c = PQcmdTuples (res); return octave_value (atoi (c)); } octave_value tuples_ok_handler (void); octave_value copy_out_handler (const std::string &); octave_value copy_in_handler (const std::string &, const Cell &, const Cell &, bool, bool); PGresult *res; int all_fetched; int valid; ExecStatusType state; octave_pq_connection_rep &conn; PGconn *cptr; Cell &rettypes; std::string &caller; }; #endif // __OCT_PQ_COMMAND__