mirror of
https://git.postgresql.org/git/postgresql.git
synced 2025-01-12 18:34:36 +08:00
Applied patch by Boszormenyi Zoltan <zb@cybertec.at> to fix problem in auto-prepare mode if the connection is closed and re-opened and the previously prepared query is issued again.
This commit is contained in:
Michael Meskes
parent
b13da41eba
commit
5bc75618e4
@ -1,4 +1,4 @@
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/* $PostgreSQL: pgsql/src/interfaces/ecpg/ecpglib/execute.c,v 1.88 2010/01/05 16:38:23 meskes Exp $ */
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/* $PostgreSQL: pgsql/src/interfaces/ecpg/ecpglib/execute.c,v 1.89 2010/01/22 14:13:03 meskes Exp $ */
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/*
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* The aim is to get a simpler inteface to the database routines.
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@ -1753,7 +1753,10 @@ ECPGdo(const int lineno, const int compat, const int force_indicator, const char
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stmt->command = ecpg_strdup(command, lineno);
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}
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else
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{
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ecpg_raise(lineno, ECPG_INVALID_STMT, ECPG_SQLSTATE_INVALID_SQL_STATEMENT_NAME, stmt->command);
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return (false);
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}
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}
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stmt->connection = con;
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@ -1,4 +1,4 @@
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/* $PostgreSQL: pgsql/src/interfaces/ecpg/ecpglib/prepare.c,v 1.34 2010/01/15 10:44:34 meskes Exp $ */
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/* $PostgreSQL: pgsql/src/interfaces/ecpg/ecpglib/prepare.c,v 1.35 2010/01/22 14:13:03 meskes Exp $ */
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#define POSTGRES_ECPG_INTERNAL
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#include "postgres_fe.h"
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@ -99,27 +99,13 @@ replace_variables(char **text, int lineno)
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return true;
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}
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/* handle the EXEC SQL PREPARE statement */
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/* questionmarks is not needed but remians in there for the time being to not change the API */
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bool
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ECPGprepare(int lineno, const char *connection_name, const bool questionmarks, const char *name, const char *variable)
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static bool
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prepare_common(int lineno, struct connection *con, const bool questionmarks, const char *name, const char *variable)
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{
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struct connection *con;
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struct statement *stmt;
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struct prepared_statement *this,
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*prev;
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struct prepared_statement *this;
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PGresult *query;
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con = ecpg_get_connection(connection_name);
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if (!ecpg_init(con, connection_name, lineno))
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return false;
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/* check if we already have prepared this statement */
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this = ecpg_find_prepared_statement(name, con, &prev);
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if (this && !deallocate_one(lineno, ECPG_COMPAT_PGSQL, con, prev, this))
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return false;
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/* allocate new statement */
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this = (struct prepared_statement *) ecpg_alloc(sizeof(struct prepared_statement), lineno);
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if (!this)
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@ -169,6 +155,28 @@ ECPGprepare(int lineno, const char *connection_name, const bool questionmarks, c
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return true;
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}
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/* handle the EXEC SQL PREPARE statement */
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/* questionmarks is not needed but remians in there for the time being to not change the API */
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bool
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ECPGprepare(int lineno, const char *connection_name, const bool questionmarks, const char *name, const char *variable)
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{
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struct connection *con;
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struct prepared_statement *this,
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*prev;
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con = ecpg_get_connection(connection_name);
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if (!ecpg_init(con, connection_name, lineno))
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return false;
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/* check if we already have prepared this statement */
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this = ecpg_find_prepared_statement(name, con, &prev);
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if (this && !deallocate_one(lineno, ECPG_COMPAT_PGSQL, con, prev, this))
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return false;
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return prepare_common(lineno, con, questionmarks, name, variable);
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}
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struct prepared_statement *
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ecpg_find_prepared_statement(const char *name,
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struct connection * con, struct prepared_statement ** prev_)
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@ -465,21 +473,37 @@ ecpg_auto_prepare(int lineno, const char *connection_name, const int compat, cha
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/* if not found - add the statement to the cache */
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if (entNo)
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{
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char *stmtID;
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struct connection *con;
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struct prepared_statement *prep;
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ecpg_log("ecpg_auto_prepare on line %d: statement found in cache; entry %d\n", lineno, entNo);
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*name = ecpg_strdup(stmtCacheEntries[entNo].stmtID, lineno);
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stmtID = stmtCacheEntries[entNo].stmtID;
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con = ecpg_get_connection(connection_name);
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prep = ecpg_find_prepared_statement(stmtID, con, NULL);
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/* This prepared name doesn't exist on this connection. */
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if (!prep && !prepare_common(lineno, con, 0, stmtID, query))
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return (false);
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*name = ecpg_strdup(stmtID, lineno);
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}
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else
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{
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char stmtID[STMTID_SIZE];
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ecpg_log("ecpg_auto_prepare on line %d: statement not in cache; inserting\n", lineno);
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/* generate a statement ID */
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*name = (char *) ecpg_alloc(STMTID_SIZE, lineno);
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sprintf(*name, "ecpg%d", nextStmtID++);
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sprintf(stmtID, "ecpg%d", nextStmtID++);
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if (!ECPGprepare(lineno, connection_name, 0, ecpg_strdup(*name, lineno), query))
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if (!ECPGprepare(lineno, connection_name, 0, stmtID, query))
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return (false);
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if (AddStmtToCache(lineno, *name, connection_name, compat, query) < 0)
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if (AddStmtToCache(lineno, stmtID, connection_name, compat, query) < 0)
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return (false);
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*name = ecpg_strdup(stmtID, lineno);
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}
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/* increase usage counter */
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@ -23,7 +23,7 @@
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#line 6 "autoprep.pgc"
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int main() {
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static void test(void) {
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/* exec sql begin declare section */
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@ -246,6 +246,11 @@ if (sqlca.sqlwarn[0] == 'W') sqlprint();
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 64 "autoprep.pgc"
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}
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int main() {
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test();
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test(); /* retry */
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return 0;
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}
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@ -158,3 +158,163 @@
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_finish: connection regress1 closed
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGdebug: set to 1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGconnect: opening database regress1 on <DEFAULT> port <DEFAULT>
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 21: query: create table T ( Item1 int , Item2 int ); with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 21: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 21: OK: CREATE TABLE
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_auto_prepare on line 23: statement found in cache; entry 15328
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGprepare on line 23: name ecpg1; query: "insert into T values ( 1 , null )"
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 23: query: insert into T values ( 1 , null ); with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 23: using PQexecPrepared for "insert into T values ( 1 , null )"
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 23: OK: INSERT 0 1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_auto_prepare on line 24: statement found in cache; entry 1640
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGprepare on line 24: name ecpg2; query: "insert into T values ( 1 , $1 )"
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 24: query: insert into T values ( 1 , $1 ); with 1 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 24: using PQexecPrepared for "insert into T values ( 1 , $1 )"
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: free_params on line 24: parameter 1 = 1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 24: OK: INSERT 0 1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_auto_prepare on line 26: statement found in cache; entry 1640
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 26: query: insert into T values ( 1 , $1 ); with 1 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 26: using PQexecPrepared for "insert into T values ( 1 , $1 )"
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: free_params on line 26: parameter 1 = 2
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 26: OK: INSERT 0 1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGprepare on line 27: name i; query: " insert into T values ( 1 , 2 ) "
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 28: query: insert into T values ( 1 , 2 ) ; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 28: using PQexecPrepared for " insert into T values ( 1 , 2 ) "
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 28: OK: INSERT 0 1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_auto_prepare on line 30: statement found in cache; entry 13056
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGprepare on line 30: name ecpg3; query: "select Item2 from T order by Item2 nulls last"
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 30: query: select Item2 from T order by Item2 nulls last; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 30: using PQexecPrepared for "select Item2 from T order by Item2 nulls last"
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 30: correctly got 4 tuples with 1 fields
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 30: RESULT: 1 offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 30: RESULT: 2 offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 30: RESULT: 2 offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 30: RESULT: offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 37: query: declare C cursor for select Item1 from T; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 37: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 37: OK: DECLARE CURSOR
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 39: query: fetch 1 in C; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 39: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 39: correctly got 1 tuples with 1 fields
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 39: RESULT: 1 offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 42: query: close C; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 42: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 42: OK: CLOSE CURSOR
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGprepare on line 44: name stmt1; query: "SELECT item2 FROM T ORDER BY item2 NULLS LAST"
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 48: query: declare cur1 cursor for SELECT item2 FROM T ORDER BY item2 NULLS LAST; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 48: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 48: OK: DECLARE CURSOR
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: query: fetch cur1; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: correctly got 1 tuples with 1 fields
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 55: RESULT: 1 offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: query: fetch cur1; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: correctly got 1 tuples with 1 fields
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 55: RESULT: 2 offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: query: fetch cur1; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: correctly got 1 tuples with 1 fields
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 55: RESULT: 2 offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: query: fetch cur1; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: correctly got 1 tuples with 1 fields
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_get_data on line 55: RESULT: offset: -1; array: yes
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: query: fetch cur1; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 55: correctly got 0 tuples with 1 fields
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: raising sqlcode 100 on line 55: no data found on line 55
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[NO_PID]: sqlca: code: 100, state: 02000
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[NO_PID]: ecpg_execute on line 60: query: close cur1; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 60: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 60: OK: CLOSE CURSOR
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 62: query: drop table T; with 0 parameter(s) on connection regress1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 62: using PQexec
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_execute on line 62: OK: DROP TABLE
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGdeallocate on line 0: name stmt1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGdeallocate on line 0: name ecpg3
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGdeallocate on line 0: name i
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGdeallocate on line 0: name ecpg2
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ECPGdeallocate on line 0: name ecpg1
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[NO_PID]: sqlca: code: 0, state: 00000
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[NO_PID]: ecpg_finish: connection regress1 closed
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[NO_PID]: sqlca: code: 0, state: 00000
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@ -7,3 +7,12 @@ item[0] = 1
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item[1] = 2
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item[2] = 2
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item[3] = -1
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item[0] = 1
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item[1] = 2
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item[2] = 2
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item[3] = -1
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i = 1
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item[0] = 1
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item[1] = 2
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item[2] = 2
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item[3] = -1
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@ -5,7 +5,7 @@
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/* test automatic prepare for all statements */
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EXEC SQL INCLUDE ../regression;
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int main() {
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static void test(void) {
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EXEC SQL BEGIN DECLARE SECTION;
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int item[4], ind[4], i = 1;
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int item1, ind1;
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@ -62,6 +62,11 @@ int main() {
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EXEC SQL DROP TABLE T;
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EXEC SQL DISCONNECT ALL;
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}
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int main() {
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test();
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test(); /* retry */
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|
||||
return 0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user