pike.git / lib / modules / Sql.pmod / pgsql_util.pmod

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pike.git/lib/modules/Sql.pmod/pgsql_util.pmod:102:    */   private Regexp dontcacheprefix = iregexp("^\a*(FETCH|COPY)\a");       /* Statements not matching paralleliseprefix will cause the driver    * to stall submission until all previously started statements have    * run to completion    */   private Regexp paralleliseprefix    = iregexp("^\a*((SELEC|INSER)T|(UPDA|DELE)TE|(FETC|WIT)H)\a");    -  /* Statements matching transbeginprefix will cause the driver +  /* Statements matching transbeginprefix will cause the driver to    * insert a sync after the statement.    * Failure to do so, will result in portal synchronisation errors    * in the event of an ErrorResponse.    */   final Regexp transbeginprefix    = iregexp("^\a*(BEGIN|START)([; \t\f\r\n]|$)");    -  /* Statements matching transendprefix will cause the driver +  /* Statements matching transendprefix will cause the driver to    * insert a sync after the statement.    * Failure to do so, will result in portal synchronisation errors    * in the event of an ErrorResponse.    */   final Regexp transendprefix    = iregexp("^\a*(COMMIT|ROLLBACK|END)([; \t\f\r\n]|$)");    -  +  /* Statements matching nodataresprefix will cause the driver +  * to skip asking for a query description and query results, since there +  * are no arguments or results to begin with. +  */ + final Regexp nodataresprefix +  = iregexp("^\a*(RESET|CLOSE|DISCARD)\a"); +     /* For statements matching execfetchlimit the resultrows will not be    * fetched in pieces. This heuristic will be sub-optimal whenever    * either an UPDATE/DELETE/INSERT statement is prefixed by WITH, or    * if there is a RETURNING with a *lot* of results. In those cases    * the portal will be busy until all results have been fetched, and will    * not be able to deliver results belonging to other parallel queries    * running on the same filedescriptor.    *    * However, considering that the current heuristic increases query-speed    * in the majority of the real-world cases, it would be considered a good    * tradeoff.    */   private Regexp execfetchlimit -  = iregexp("^\a*((UPDA|DELE)TE|INSERT" +  = iregexp("^\a*((UPDA|DELE)TE|INSERT|CREATE|DROP"    "|RESET|CLOSE|DISCARD)\a|\aLIMIT\a+[1-9][; \t\f\r\n]*$");      private void default_backend_runs() { // Runs as soon as the    cb_backend = Pike.DefaultBackend; // DefaultBackend has started   }      private void create() {    atexit(destroy);    // Run callbacks from our local_backend until DefaultBackend has started    cb_backend = local_backend = Pike.SmallBackend();