diff options
Diffstat (limited to 'include/dblayer/functions_pgsql.inc.php')
| -rw-r--r-- | include/dblayer/functions_pgsql.inc.php | 796 |
1 files changed, 0 insertions, 796 deletions
diff --git a/include/dblayer/functions_pgsql.inc.php b/include/dblayer/functions_pgsql.inc.php deleted file mode 100644 index ac560d6b2..000000000 --- a/include/dblayer/functions_pgsql.inc.php +++ /dev/null @@ -1,796 +0,0 @@ -<?php -// +-----------------------------------------------------------------------+ -// | Piwigo - a PHP based photo gallery | -// +-----------------------------------------------------------------------+ -// | Copyright(C) 2008-2012 Piwigo Team http://piwigo.org | -// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | -// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | -// +-----------------------------------------------------------------------+ -// | 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 | -// | | -// | 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, write to the Free Software | -// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | -// | USA. | -// +-----------------------------------------------------------------------+ - -define('REQUIRED_PGSQL_VERSION', '8.0'); -define('DB_ENGINE', 'PostgreSQL'); - -define('DB_REGEX_OPERATOR', '~'); -define('DB_RANDOM_FUNCTION', 'RANDOM'); - -/** - * - * simple functions - * - */ - -function pwg_db_connect($host, $user, $password, $database) -{ - $connection_string = ''; - if (strpos($host,':') !== false) - { - list($host, $port) = explode(':', $host); - } - $connection_string = sprintf('host=%s', $host); - if (!empty($port)) - { - $connection_string .= sprintf(' port=%d', $port); - } - $connection_string .= sprintf(' user=%s password=%s dbname=%s', - $user, - $password, - $database); - $link = @pg_connect($connection_string); - if (!$link) - { - throw new Exception("Can't connect to server"); - } - else - { - return $link; - } -} - -function pwg_db_check_version() -{ - $current_version = pwg_get_db_version(); - if (version_compare($current_version, REQUIRED_PGSQL_VERSION, '<')) - { - fatal_error( - sprintf( - 'your database version is too old, you have "%s" and you need at least "%s"', - $current_version, - REQUIRED_PGSQL_VERSION - ) - ); - } -} - -function pwg_db_check_charset() -{ - return true; -} - -function pwg_get_db_version() -{ - list($pg_version) = pwg_db_fetch_row(pwg_query('SHOW SERVER_VERSION;')); - - return $pg_version; -} - -function pwg_query($query) -{ - global $conf,$page,$debug,$t2; - - $replace_pattern = '`REPLACE INTO\s(\S*)\s*([^)]*\))\s*VALUES\(([^,]*),(.*)\)\s*`mi'; - $select_distinct_pattern = '/SELECT\s+DISTINCT\s*(\S[^;]*\S)\s*(FROM[^(;]+WHERE[^;]+)\s+ORDER\s+BY\s+([^;]*\S)\s*;?/i'; - - $start = get_moment(); - - if (preg_match($replace_pattern, $query, $matches) - && $matches[1]==SESSIONS_TABLE) - { - $select_query = ' -SELECT id FROM '.$matches[1].' - WHERE id='.$matches[3]; - ( $result = pg_query($select_query)) or die($query."\n<br>".pg_last_error()); - if (pwg_db_num_rows($result)==1) - { - $query = ' -UPDATE '.$matches[1].' - SET expiration=now() - WHERE id='.$matches[3]; - } - else - { - $query = ' -INSERT INTO '.$matches[1].' - '.$matches[2].' VALUES('.$matches[3].','.$matches[4].')'; - } - ( $result = pg_query($query)) or die($query."\n<br>".pg_last_error()); - } - elseif (preg_match($select_distinct_pattern, $query, $matches)) - { - $select_fields_string=''; - $distinct_fields_string=''; - $orderby_fields_string=''; - - foreach (preg_split( '/\s*,\s*/', $matches[1]) as $field) - { - $split_field = preg_split( '/\s*AS\s*/i', $field); - if (isset($split_field[1])) - { - $distinct_fields[ $split_field[1] ] = $field; - } - else - { - $distinct_fields[ $field ] = $field; - } - } - - foreach (preg_split( '/\s*,\s*/', $matches[3]) as $field) - { - $kv = preg_split( '/\s+/', $field ); - $orderby_fields[ $kv[0] ] = $kv[1]; - } - - foreach ($distinct_fields as $as_field => $field) - { - if ($distinct_fields_string) - { - $distinct_fields_string=$distinct_fields_string.', '; - } - - $distinct_fields_string=$distinct_fields_string.$as_field; - - if ($select_fields_string) - { - $select_fields_string=$select_fields_string.', '; - } - - $select_fields_string=$select_fields_string.$field; - - if ($orderby_fields_string) - { - $orderby_fields_string=$orderby_fields_string.', '; - } - - $orderby_fields_string=$orderby_fields_string.$as_field.' '; - - if (isset($orderby_fields[$as_field])) - { - $orderby_fields_string=$orderby_fields_string.$orderby_fields[$as_field]; - unset($orderby_fields[$as_field]); - } - else - { - $orderby_fields_string=$orderby_fields_string.'ASC'; - } - } - - foreach ($orderby_fields as $field => $order) - { - $orderby_fields_string=$orderby_fields_string.', '.$field.' '.$order; - } - - $query = ' -SELECT DISTINCT ON ('.$distinct_fields_string.') '.$select_fields_string.' - '.$matches[2].' - ORDER BY '.$orderby_fields_string; - ($result = pg_query($query)) or die($query."\n<br>".pg_last_error()); - } - else - { - ($result = pg_query($query)) or die($query."\n<br>".pg_last_error()); - } - - $time = get_moment() - $start; - - if (!isset($page['count_queries'])) - { - $page['count_queries'] = 0; - $page['queries_time'] = 0; - } - - $page['count_queries']++; - $page['queries_time']+= $time; - - if ($conf['show_queries']) - { - $output = ''; - $output.= '<pre>['.$page['count_queries'].'] '; - $output.= "\n".$query; - $output.= "\n".'(this query time : '; - $output.= '<b>'.number_format($time, 3, '.', ' ').' s)</b>'; - $output.= "\n".'(total SQL time : '; - $output.= number_format($page['queries_time'], 3, '.', ' ').' s)'; - $output.= "\n".'(total time : '; - $output.= number_format( ($time+$start-$t2), 3, '.', ' ').' s)'; - if ( $result!=null and preg_match('/\s*SELECT\s+/i',$query) ) - { - $output.= "\n".'(num rows : '; - $output.= pwg_db_num_rows($result).' )'; - } - elseif ( $result!=null - and preg_match('/\s*INSERT|UPDATE|REPLACE|DELETE\s+/i',$query) ) - { - $output.= "\n".'(affected rows : '; - $output.= pwg_db_changes($result).' )'; - } - $output.= "</pre>\n"; - - $debug .= $output; - } - - return $result; -} - -function pwg_db_nextval($column, $table) -{ - $query = ' -SELECT nextval(\''.$table.'_'.$column.'_seq\')'; - list($next) = pwg_db_fetch_row(pwg_query($query)); - - return $next; -} - -/** - * - * complex functions - * - */ - -function pwg_db_changes($result) -{ - return pg_affected_rows($result); -} - -function pwg_db_num_rows($result) -{ - return pg_num_rows($result); -} - -function pwg_db_fetch_assoc($result) -{ - return pg_fetch_assoc($result); -} - -function pwg_db_fetch_row($result) -{ - return pg_fetch_row($result); -} - -function pwg_db_fetch_object($result) -{ - return pg_fetch_object($result); -} - -function pwg_db_free_result($result) -{ - return pg_free_result($result); -} - -function pwg_db_real_escape_string($s) -{ - return pg_escape_string($s); -} - -function pwg_db_insert_id($table=null, $column='id') -{ - $sequence = sprintf('%s_%s_seq', strtolower($table), $column); - $query = ' -SELECT CURRVAL(\''.$sequence.'\');'; - - list($id) = pwg_db_fetch_row(pwg_query($query)); - - return $id; -} - -/** - * - * complex functions - * - */ - -/** - * creates an array based on a query, this function is a very common pattern - * used here - * - * @param string $query - * @param string $fieldname - * @return array - */ -function array_from_query($query, $fieldname) -{ - $array = array(); - - $result = pwg_query($query); - while ($row = pg_fetch_assoc($result)) - { - array_push($array, $row[$fieldname]); - } - - return $array; -} - -define('MASS_UPDATES_SKIP_EMPTY', 1); -/** - * updates multiple lines in a table - * - * @param string table_name - * @param array dbfields - * @param array datas - * @param int flags - if MASS_UPDATES_SKIP_EMPTY - empty values do not overwrite existing ones - * @return void - */ -function mass_updates($tablename, $dbfields, $datas, $flags=0) -{ - if (count($datas) == 0) - return; - - if (count($datas) < 10) - { - foreach ($datas as $data) - { - $query = ' -UPDATE '.$tablename.' - SET '; - $is_first = true; - foreach ($dbfields['update'] as $key) - { - $separator = $is_first ? '' : ",\n "; - - if (isset($data[$key]) and $data[$key] != '') - { - $query.= $separator.$key.' = \''.$data[$key].'\''; - } - else - { - if ( $flags & MASS_UPDATES_SKIP_EMPTY ) - continue; // next field - $query.= "$separator$key = NULL"; - } - $is_first = false; - } - if (!$is_first) - {// only if one field at least updated - $query.= ' - WHERE '; - $is_first = true; - foreach ($dbfields['primary'] as $key) - { - if (!$is_first) - { - $query.= ' AND '; - } - if ( isset($data[$key]) ) - { - $query.= $key.' = \''.$data[$key].'\''; - } - else - { - $query.= $key.' IS NULL'; - } - $is_first = false; - } - pwg_query($query); - } - } // foreach update - } - else - { - $all_fields = array_merge($dbfields['primary'], $dbfields['update']); - $temporary_tablename = $tablename.'_'.micro_seconds(); - $query = ' -CREATE TABLE '.$temporary_tablename.' - AS SELECT * FROM '.$tablename.' WHERE 1=2'; - - pwg_query($query); - mass_inserts($temporary_tablename, $all_fields, $datas); - if ( $flags & MASS_UPDATES_SKIP_EMPTY ) - $func_set = create_function('$s', 'return "$s = NULLIF(t2.$s, '.$tablename.'.$s)";'); - else - $func_set = create_function('$s', 'return "$s = t2.$s";'); - - // update of images table by joining with temporary table - $query = ' -UPDATE '.$tablename.' - SET '. - implode( - "\n , ", - array_map($func_set, $dbfields['update']) - ).' -FROM '.$temporary_tablename.' AS t2 - WHERE '. - implode( - "\n AND ", - array_map( - create_function('$s', 'return "'.$tablename.'.$s = t2.$s";'), - $dbfields['primary'] - ) - ); - pwg_query($query); - $query = ' -DROP TABLE '.$temporary_tablename; - pwg_query($query); - } -} - -/** - * updates one line in a table - * - * @param string table_name - * @param array set_fields - * @param array where_fields - * @param int flags - if MASS_UPDATES_SKIP_EMPTY - empty values do not overwrite existing ones - * @return void - */ -function single_update($tablename, $set_fields, $where_fields, $flags=0) -{ - if (count($set_fields) == 0) - { - return; - } - - $query = ' -UPDATE '.$tablename.' - SET '; - $is_first = true; - foreach ($set_fields as $key => $value) - { - $separator = $is_first ? '' : ",\n "; - - if (isset($value) and $value != '') - { - $query.= $separator.$key.' = \''.$value.'\''; - } - else - { - if ( $flags & MASS_UPDATES_SKIP_EMPTY ) - continue; // next field - $query.= "$separator$key = NULL"; - } - $is_first = false; - } - if (!$is_first) - {// only if one field at least updated - $query.= ' - WHERE '; - $is_first = true; - foreach ($where_fields as $key => $value) - { - if (!$is_first) - { - $query.= ' AND '; - } - if ( isset($value) ) - { - $query.= $key.' = \''.$value.'\''; - } - else - { - $query.= $key.' IS NULL'; - } - $is_first = false; - } - pwg_query($query); - } -} - -/** - * inserts multiple lines in a table - * - * @param string table_name - * @param array dbfields - * @param array inserts - * @return void - */ -function mass_inserts($table_name, $dbfields, $datas) -{ - if (count($datas) != 0) - { - $first = true; - - $packet_size = 16777216; - $packet_size = $packet_size - 2000; // The last list of values MUST not exceed 2000 character*/ - $query = ''; - - foreach ($datas as $insert) - { - if (strlen($query) >= $packet_size) - { - pwg_query($query); - $first = true; - } - - if ($first) - { - $query = ' -INSERT INTO '.$table_name.' - ('.implode(',', $dbfields).') - VALUES'; - $first = false; - } - else - { - $query .= ' - , '; - } - - $query .= '('; - foreach ($dbfields as $field_id => $dbfield) - { - if ($field_id > 0) - { - $query .= ','; - } - - if (!isset($insert[$dbfield]) or $insert[$dbfield] === '') - { - $query .= 'NULL'; - } - else - { - $query .= "'".$insert[$dbfield]."'"; - } - } - $query .= ')'; - } - pwg_query($query); - } -} - -/** - * inserts one line in a table - * - * @param string table_name - * @param array dbfields - * @param array insert - * @return void - */ -function single_insert($table_name, $data) -{ - if (count($data) != 0) - { - $query = ' -INSERT INTO '.$table_name.' - ('.implode(',', array_keys($data)).') - VALUES'; - - $query .= '('; - $is_first = true; - foreach ($data as $key => $value) - { - if (!$is_first) - { - $query .= ','; - } - else - { - $is_first = false; - } - - if ($value === '') - { - $query .= 'NULL'; - } - else - { - $query .= "'".$value."'"; - } - } - $query .= ')'; - - pwg_query($query); - } -} - -/** - * Do maintenance on all PWG tables - * - * @return none - */ -function do_maintenance_all_tables() -{ - global $prefixeTable, $page; - - $all_tables = array(); - - // List all tables - $query = 'SELECT tablename FROM pg_tables -WHERE tablename like \''.$prefixeTable.'%\''; - - $all_tables = array_from_query($query, 'tablename'); - - // Optimize all tables - foreach ($all_tables as $table) - { - $query = 'VACUUM FULL '.$table; - pwg_query($query); - } - array_push($page['infos'], - l10n('All optimizations have been successfully completed.') - ); -} - -function pwg_db_concat($array) -{ - return implode($array, ' || '); -} - -function pwg_db_concat_ws($array, $separator) -{ - return implode($array, ' || \''.$separator.'\' || '); -} - -function pwg_db_cast_to_text($string) -{ - return 'CAST('.$string.' AS TEXT)'; -} - -/** - * returns an array containing the possible values of an enum field - * - * @param string tablename - * @param string fieldname - */ -function get_enums($table, $field) -{ - $typname = preg_replace('/'.$GLOBALS['prefixeTable'].'/', '', $table); - $typname .= '_' . $field; - - $query = 'SELECT -enumlabel FROM pg_enum JOIN pg_type - ON pg_enum.enumtypid=pg_type.oid - WHERE typname=\''.$typname.'\' -'; - $result = pwg_query($query); - while ($row = pwg_db_fetch_assoc($result)) - { - $options[] = $row['enumlabel']; - } - - return $options; -} - -// get_boolean transforms a string to a boolean value. If the string is -// "false" (case insensitive), then the boolean value false is returned. In -// any other case, true is returned. -function get_boolean( $string ) -{ - $boolean = true; - if ('f' == $string || 'false' == $string) - { - $boolean = false; - } - return $boolean; -} - -/** - * returns boolean string 'true' or 'false' if the given var is boolean - * - * @param mixed $var - * @return mixed - */ -function boolean_to_string($var) -{ - if (is_bool($var)) - { - return $var ? 'true' : 'false'; - } - elseif ($var=='t' || $var=='f') - { - return ($var=='t') ? 'true' : 'false'; - } - else - { - return $var; - } -} - -/** - * - * interval and date functions - * - */ - -function pwg_db_get_recent_period_expression($period, $date='CURRENT_DATE') -{ - if ($date!='CURRENT_DATE') - { - $date = '\''.$date.'\'::date'; - } - - return '('.$date.' - \''.$period.' DAY\'::interval)::date'; -} - -function pwg_db_get_recent_period($period, $date='CURRENT_DATE') -{ - $query = 'select '.pwg_db_get_recent_period_expression($period, $date); - list($d) = pwg_db_fetch_row(pwg_query($query)); - - return $d; -} - -function pwg_db_get_flood_period_expression($seconds) -{ - return 'now() - \''.$seconds.' SECOND\'::interval'; -} - -function pwg_db_get_hour($date) -{ - return 'EXTRACT(HOUR FROM '.$date.')'; -} - -function pwg_db_get_date_YYYYMM($date) -{ - return 'TO_CHAR('.$date.', \'YYYYMM\')'; -} - -function pwg_db_get_date_MMDD($date) -{ - return 'TO_CHAR('.$date.', \'MMDD\')'; -} - -function pwg_db_get_year($date) -{ - return 'EXTRACT(YEAR FROM '.$date.')'; -} - -function pwg_db_get_month($date) -{ - return 'EXTRACT(MONTH FROM '.$date.')'; -} - -function pwg_db_get_week($date, $mode=null) -{ - return 'EXTRACT(WEEK FROM '.$date.')'; -} - -function pwg_db_get_dayofmonth($date) -{ - return 'EXTRACT(DAY FROM '.$date.')'; -} - -function pwg_db_get_dayofweek($date) -{ - return 'EXTRACT(DOW FROM '.$date.')::INTEGER - 1'; -} - -function pwg_db_get_weekday($date) -{ - return 'EXTRACT(ISODOW FROM '.$date.')::INTEGER - 1'; -} - -function pwg_db_date_to_ts($date) -{ - return 'EXTRACT(EPOCH FROM '.$date.')'; -} - -// my_error returns (or send to standard output) the message concerning the -// error occured for the last pgsql query. -function my_error($header, $die) -{ - $error = '[pgsql error]'.pg_last_error()."\n"; - $error .= $header; - - if ($die) - { - fatal_error($error); - } - echo("<pre>"); - trigger_error($error, E_USER_WARNING); - echo("</pre>"); -} - - -?>
\ No newline at end of file |