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#include <ecpgtype.h>
#include <ecpglib.h>
#include <ecpgerrno.h>
#include "extern.h"
#include <sqlca.h>
static struct connection *all_connections = NULL,
*actual_connection = NULL;
struct connection *
get_connection(const char *connection_name)
{
struct connection *con = all_connections;
if (connection_name == NULL || strcmp(connection_name, "CURRENT") == 0)
return actual_connection;
for (; con && strcmp(connection_name, con->name) != 0; con = con->next);
if (con)
return con;
else
return NULL;
}
static void
ecpg_finish(struct connection * act)
{
if (act != NULL)
{
ECPGlog("ecpg_finish: finishing %s.\n", act->name);
PQfinish(act->connection);
/* remove act from the list */
if (act == all_connections)
all_connections = act->next;
else
{
struct connection *con;
for (con = all_connections; con->next && con->next != act; con = con->next);
if (con->next)
con->next = act->next;
}
if (actual_connection == act)
actual_connection = all_connections;
free(act->name);
free(act);
}
else
ECPGlog("ecpg_finish: called an extra time.\n");
}
bool
ECPGsetcommit(int lineno, const char *mode, const char *connection_name)
{
struct connection *con = get_connection(connection_name);
PGresult *results;
if (!ecpg_init(con, connection_name, lineno))
return (false);
ECPGlog("ECPGsetcommit line %d action = %s connection = %s\n", lineno, mode, con->name);
if (con->autocommit == true && strncmp(mode, "off", strlen("off")) == 0)
{
if (con->committed)
{
if ((results = PQexec(con->connection, "begin transaction")) == NULL)
{
ECPGraise(lineno, ECPG_TRANS, NULL);
return false;
}
PQclear(results);
con->committed = false;
}
con->autocommit = false;
}
else if (con->autocommit == false && strncmp(mode, "on", strlen("on")) == 0)
{
if (!con->committed)
{
if ((results = PQexec(con->connection, "commit")) == NULL)
{
ECPGraise(lineno, ECPG_TRANS, NULL);
return false;
}
PQclear(results);
con->committed = true;
}
con->autocommit = true;
}
return true;
}
bool
ECPGsetconn(int lineno, const char *connection_name)
{
struct connection *con = get_connection(connection_name);
if (!ecpg_init(con, connection_name, lineno))
return (false);
actual_connection = con;
return true;
}
bool
ECPGconnect(int lineno, const char *dbname, const char *user, const char *passwd, const char *connection_name, int autocommit)
{
struct connection *this;
init_sqlca();
if ((this = (struct connection *) ecpg_alloc(sizeof(struct connection), lineno)) == NULL)
return false;
if (dbname == NULL && connection_name == NULL)
connection_name = "DEFAULT";
/* add connection to our list */
if (connection_name != NULL)
this->name = ecpg_strdup(connection_name, lineno);
else
this->name = ecpg_strdup(dbname, lineno);
if (all_connections == NULL)
this->next = NULL;
else
this->next = all_connections;
actual_connection = all_connections = this;
ECPGlog("ECPGconnect: opening database %s %s%s\n", dbname ? dbname : "<DEFAULT>", user ? "for user " : "", user ? user : "");
this->connection = PQsetdbLogin(NULL, NULL, NULL, NULL, dbname, user, passwd);
if (PQstatus(this->connection) == CONNECTION_BAD)
{
ecpg_finish(this);
ECPGlog("connect: could not open database %s %s%s in line %d\n", dbname ? dbname : "<DEFAULT>", user ? "for user " : "", user ? user : "", lineno);
ECPGraise(lineno, ECPG_CONNECT, dbname ? dbname : "<DEFAULT>");
return false;
}
this->committed = true;
this->autocommit = autocommit;
return true;
}
bool
ECPGdisconnect(int lineno, const char *connection_name)
{
struct connection *con;
if (strcmp(connection_name, "ALL") == 0)
{
init_sqlca();
for (con = all_connections; con;)
{
struct connection *f = con;
con = con->next;
ecpg_finish(f);
}
}
else
{
con = get_connection(connection_name);
if (!ecpg_init(con, connection_name, lineno))
return (false);
else
ecpg_finish(con);
}
return true;
}
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