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<?php # $Id: postgres.inc.php 565 2005-10-17 13:04:11Z garvinhicking $
# Copyright (c) 2003-2005, Jannis Hermanns (on behalf the Serendipity Developer Team)
# All rights reserved. See LICENSE file for licensing details
function serendipity_db_begin_transaction(){
serendipity_db_query('begin work');
}
function serendipity_db_end_transaction($commit){
if ($commit){
serendipity_db_query('commit');
}else{
serendipity_db_query('rollback');
}
}
function serendipity_db_in_sql($col, &$search_ids) {
return $col . " IN (" . implode(', ', $search_ids) . ")";
}
function serendipity_db_connect() {
global $serendipity;
if (isset($serendipity['dbPersistent']) && $serendipity['dbPersistent']) {
$function = 'pg_pconnect';
} else {
$function = 'pg_connect';
}
$serendipity['dbConn'] = $function(
sprintf(
'%sdbname=%s user=%s password=%s',
strlen($serendipity['dbHost']) ? ('host=' . $serendipity['dbHost'] . ' ') : '',
$serendipity['dbName'],
$serendipity['dbUser'],
$serendipity['dbPass']
)
);
return $serendipity['dbConn'];
}
function serendipity_db_escape_string($string) {
return pg_escape_string($string);
}
function serendipity_db_limit($start, $offset) {
return $offset . ', ' . $start;
}
function serendipity_db_limit_sql($limitstring) {
$limit_split = split(',', $limitstring);
if (count($limit_split) > 1) {
$limit = ' LIMIT ' . $limit_split[0] . ' OFFSET ' . $limit_split[1];
} else {
$limit = ' LIMIT ' . $limit_split[0];
}
return $limit;
}
function serendipity_db_affected_rows() {
global $serendipity;
return pg_affected_rows($serendipity['dbLastResult']);
}
function serendipity_db_updated_rows() {
global $serendipity;
// it is unknown whether pg_affected_rows returns number of rows
// UPDATED or MATCHED on an UPDATE statement.
return pg_affected_rows($serendipity['dbLastResult']);
}
function serendipity_db_matched_rows() {
global $serendipity;
// it is unknown whether pg_affected_rows returns number of rows
// UPDATED or MATCHED on an UPDATE statement.
return pg_affected_rows($serendipity['dbLastResult']);
}
function serendipity_db_insert_id($table = '', $id = '') {
global $serendipity;
if (empty($table) || empty($id)) {
// BC - will/should never be called with empty parameters!
return pg_last_oid($serendipity['dbLastResult']);
} else {
$query = "SELECT currval('{$serendipity['dbPrefix']}{$table}_{$id}_seq'::text) AS {$id}";
$res = pg_query($serendipity['dbConn'], $query);
if (pg_num_rows($res)) {
$insert_id = pg_fetch_array($res, 0, PGSQL_ASSOC);
return $insert_id[$id];
} else {
return pg_last_oid($serendipity['dbLastResult']); // BC - should not happen!
}
}
}
function &serendipity_db_query($sql, $single = false, $result_type = "both", $reportErr = false, $assocKey = false, $assocVal = false, $expectError = false) {
global $serendipity;
static $type_map = array(
'assoc' => PGSQL_ASSOC,
'num' => PGSQL_NUM,
'both' => PGSQL_BOTH,
'true' => true,
'false' => false
);
if (!isset($serendipity['dbPgsqlOIDS'])) {
$serendipity['dbPgsqlOIDS'] = true;
@serendipity_db_query('SET default_with_oids = true', true, 'both', false, false, false, true);
}
if (!$expectError && ($reportErr || !$serendipity['production'])) {
$serendipity['dbLastResult'] = pg_query($serendipity['dbConn'], $sql);
} else {
$serendipity['dbLastResult'] = @pg_query($serendipity['dbConn'], $sql);
}
if (!$serendipity['dbLastResult']) {
if (!$expectError && !$serendipity['production']) {
print "Error in $sql<br/>\n";
print pg_last_error($serendipity['dbConn']) . "<BR/>\n";
if (function_exists('debug_backtrace')) {
highlight_string(var_export(debug_backtrace(), 1));
}
print "<br><code>$sql</code>\n";
}
return $type_map['false'];
}
if ($serendipity['dbLastResult'] === true) {
return $type_map['true'];
}
$result_type = $type_map[$result_type];
$n = pg_num_rows($serendipity['dbLastResult']);
switch ($n) {
case 0:
if ($single) {
return $type_map['false'];
}
return $type_map['true'];
case 1:
if ($single) {
return pg_fetch_array($serendipity['dbLastResult'], 0, $result_type);
}
default:
$rows = array();
for ($i = 0; $i < $n; $i++) {
if (!empty($assocKey) && !empty($assocVal)) {
// You can fetch a key-associated array via the two function parameters assocKey and assocVal
$row = pg_fetch_array($serendipity['dbLastResult'], $i, $result_type);
$rows[$row[$assocKey]] = $row[$assocVal];
} else {
$rows[] = pg_fetch_array($serendipity['dbLastResult'], $i, $result_type);
}
}
return $rows;
}
}
function serendipity_db_schema_import($query) {
static $search = array('{AUTOINCREMENT}', '{PRIMARY}', '{UNSIGNED}',
'{FULLTEXT}', '{BOOLEAN}', 'int(1)', 'int(10)', 'int(11)', 'int(4)', '{UTF_8}');
static $replace = array('SERIAL', 'primary key', '', '', 'BOOLEAN NOT NULL', 'int2',
'int4', 'int4', 'int4', '');
if (stristr($query, '{FULLTEXT_MYSQL}')) {
return true;
}
$query = trim(str_replace($search, $replace, $query));
if ($query{0} == '@') {
// Errors are expected to happen (like duplicate index creation)
return serendipity_db_query(substr($query, 1), false, 'both', false, false, false, true);
} else {
return serendipity_db_query($query);
}
}
function serendipity_db_probe($hash, &$errs) {
global $serendipity;
if (!function_exists('pg_connect')) {
$errs[] = 'No PostgreSQL extension found. Please check your webserver installation or contact your systems administrator regarding this problem.';
return false;
}
$serendipity['dbConn'] = pg_connect(
sprintf(
'%sdbname=%s user=%s password=%s',
strlen($hash['dbHost']) ? ('host=' . $hash['dbHost'] . ' ') : '',
$hash['dbName'],
$hash['dbUser'],
$hash['dbPass']
)
);
if (!$serendipity['dbConn']) {
$errs[] = 'Could not connect to database; check your settings.';
return false;
}
return true;
}
function serendipity_db_concat($string) {
return '(' . str_replace(', ', '||', $string) . ')';
}
/* vim: set sts=4 ts=4 expandtab : */
?>
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