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-<?php
-/*
-** $Id$
-**
-** Copyright (C) 1995-2007 by the ITools Authors.
-** This file is part of ITools - the Internet Tools Library
-**
-** ITools 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; either version 3 of the License, or
-** (at your option) any later version.
-**
-** ITools 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, see <http://www.gnu.org/licenses/>.
-**
-** dbi.class - UltraFlexible Database Interface 3000
-*/
-
-class it_dbi
-{
- # Default configuration of dbi class
- var $_defaultconfig = array
- (
- 'db' => null,
- 'server' => "localhost",
- 'server_update' => null,
- 'user' => "itools",
- 'pw' => "",
- 'safety' => 1, # 0= never die, 1=die if query invalid, 2=die also if no results
- #'keyfield' => 'ID', # Don't set to null here, filled later by _get_field_info()
- #'charset' => # client charset (requires MySQL 5.0.7 or later)
- 'classprefix' => "",
- 'getfieldinfo' => true, # do not read schema. only select() allowed
- 'localized_defaultlanguage' => "de", # Localize fields with this suffix, e.g. copy title_de to title on read
- );
-
- var $_key; # Key of currently loaded record or null (public readonly)
- var $_fields; # Array of name => array(Field,Type,Null,Key,Default,Extra,Length) of fields (public readonly)
- var $_convertfunc; # Array of name => convert function (currently intval and floatval) for this field's values
- var $_link; # DB link identifier (private)
-
-
-/**
- * Constructor: Initialize the DBI interface
- * @param $p optional array(key => value) of configuration data
- * @param $query Optional initial query to run
- */
-function it_dbi($p = array(), $query = null)
-{
- # Shortcut: String config means use this table with default values
- if (!is_array($p))
- $p = array('table' => $p);
-
- if ($p['home'])
- $p['db'] = strtr(it::match('/www/([^/]*)', $p['home']), '.-', '__');
-
- # If the global singleton defaults are for this db/server/server_update then use them.
- $dp = (array)$GLOBALS['it_dbi']->_p;
- if ((!isset($p['db']) || ($p['db'] == $dp['db'])) && (!isset($p['server']) || ($p['server'] == $dp['server'])) && (!isset($p['server_update']) || ($p['server_update'] == $dp['server_update'])))
- $p += $dp;
-
- # Combine our settings with user's defaults and class defaults
- $p += (array)$GLOBALS['it_dbi_defaultconfig'] + array('db' => $GLOBALS['ULTRADB']) + $this->_defaultconfig + array('charset' => strtr(strtolower(ini_get('default_charset')), array('iso-8859-1' => 'latin1', 'utf-8' => 'utf8')));
- unset($this->_defaultconfig); # to shorten ED() output
-
- $this->_p = $p;
-
- if ($p['table']) # Standard use: create a table object
- {
- if (!isset($GLOBALS['it_dbi']))
- new it_dbi;
-
- if ($p['getfieldinfo'])
- $this->_p += $this->_get_field_info(); # Get $this->_fields and p[keyfield, autoincrement, randomid]
-
- if (is_array($query))
- {
- # Call with all arguments except first one
- $args = func_get_args();
- array_shift($args);
- call_user_func_array(array($this, "select"), $args);
- }
- elseif (isset($query))
- $this->read($query);
- }
- else
- $GLOBALS['it_dbi'] =& $this;
-}
-
-/**
- * function Tablename($query)
- * Constructor. Returns record object from table Tablename.
- * If $query is set, it encodes a SELECT to execute and store in the returned object, see select()
- * Note: Old second parameter $config has been deprecated and will be removed
- */ #:}
-
-/**
- * Factory: Create classes of all database tables. Call statically.
- * @param $p array(key => value) of configuration data
- */
-function createclasses($p = array())
-{
- # Make sure singleton exists
- $dbi = $GLOBALS['it_dbi'] ? $GLOBALS['it_dbi'] : new it_dbi($p);
-
- $p += $dbi->_p;
-
- $dbid = "{$p['user']}@{$p['server']}:{$p['db']}";
- $state = it_dbi::_state_get($dbid);
-
- if (!$tables = $state['tables'])
- {
- for ($tables = array(), $res = $dbi->query('SHOW TABLES', $p); $row = mysql_fetch_row($res);)
- $tables[] = $row[0];
-
- $state = it_dbi::_state_get($dbid); # State could have been modified by query above
- $state['tables'] = $tables;
- it_dbi::_state_put($dbid, $state);
- }
-
- foreach ($tables as $table)
- {
- # Either create class in autoloader or manually just below
- if (!class_exists($p['classprefix'] . $table))
- it_dbi::createclass(array('table' => $table) + $p);
- }
-}
-
-
-/**
- * Convert table given by name into a class
- */
-function createclass($p)
-{
- # Shortcut: String config means use this table with default values
- if (!is_array($p))
- $p = array('table' => $p);
-
- # Make sure singleton exists
- $dbi = $GLOBALS['it_dbi'] ? $GLOBALS['it_dbi'] : new it_dbi(array('table' => null) + $p);
- $p += $dbi->_p; # FIXME: (has to be checked for side effects!)
- $dbid = "{$p['user']}@{$p['server']}:{$p['db']}";
-
- if (!isset($dbi->_tables[$dbid]))
- {
- $state = it_dbi::_state_get($dbid);
- $dbi->_tables[$dbid] = array();
-
- if (!($tables = $state['tables']))
- {
- for ($tables = array(), $res = $dbi->query('SHOW TABLES', $p); $row = mysql_fetch_row($res);)
- $tables[] = $row[0];
-
- $state = it_dbi::_state_get($dbid); # State could have been modified by query above
- $state['tables'] = $tables;
- it_dbi::_state_put($dbid, $state);
- }
-
- foreach ($tables as $table)
- $dbi->_tables[$dbid][$table] = true;
- }
-
- if ($p['forcecreate'] || $dbi->_tables[$dbid][$p['table']]) # Do not generate classes for non-existant tables (can be overridden by forcecreate => true, used in tests/it_dbi.t)
- {
- $classname = $p['classprefix'] . $p['table'];
-
- if (substr($classname, 0, 4) != 'PMA_') # It is designed behaviour that an error is generated if this class already exists!
- {
- $interface = function_exists("interface_exists") && interface_exists("Iterator", false) ? "implements Iterator" : "";
- $code = "class $classname extends it_dbi $interface
- {
- function $classname(/* \$query ... */)
- {
- \$args = func_get_args();
- \$query = array_shift(\$args); # Preserve type (scalar/array) in single parameter case
-
- foreach (\$args as \$arg)
- \$query = array_merge((array)\$query, (array)\$arg);
-
- \$this->it_dbi(" . var_export($p, true) . ", \$query);
- }
- }";
-
- debug("it_dbi::createclass('{$p['table']}'): creating class $classname, dbid=$dbid", 5);
- eval($code);
- }
- }
-}
-
-
-/**
- * INTERNAL: Connect to mysql server and maintain a global link cache
- */
-function _connect($p = array())
-{
- $p += $this->_p;
- $dbid = "{$p['user']}@{$p['server']}:{$p['db']}";
- $state = it_dbi::_state_get($dbid);
-
- if ($p['reconnect'] || !($this->_link = $state['link']))
- {
- # Force new link if same server/user was seen before (mysql ignores selected db)
- if ($GLOBALS['it_dbi']->_connected["{$p['server']}/{$p['user']}"]++)
- $this->_link = @mysql_connect($p['server'], $p['user'], $p['pw'], true);
- else
- $this->_link = @mysql_connect($p['server'], $p['user'], $p['pw']);
-
- if (!$this->_link)
- {
- # One retry after a short delay
- it::log('sqllog', "it_dbi(): retrying DB link (mysql_connect {$p['server']}, {$p['db']}): " . mysql_error());
- sleep(1);
- $this->_link = @mysql_connect($p['server'], $p['user'], $p['pw'], true);
- }
-
- if (!$this->_link)
- $this->_fatal("_connect(): can't create DB link (mysql_connect {$p['user']}@{$p['server']}, {$p['db']})");
-
- if (!(@mysql_select_db($p['db'], $this->_link)))
- $this->_fatal("_connect(): can't select database \"{$p['db']}\"");
-
- # set charset used for this connection
- if ($p['charset'])
- if (!mysql_set_charset($p['charset'], $this->_link))
- $this->_fatal("_connect(): can't set charset \"{$p['charset']}\"");
-
- # NOTE: This overwrites old state but that is on purpose. New link means we should refetch all info about connection
- $state['link'] = $this->_link;
- it_dbi::_state_put($dbid, $state, false); # Store only locally as link is not shared anyway
- }
-}
-
-
-/**
- * INTERNAL: construct SQL SET clause of changed values from member vars and tags array.
- */
-function _set($tags, $allfields = false)
-{
- $r = array();
- foreach((array)$tags as $field => $value)
- {
- if (substr($field, 0, 1) == '-') # Unquoted value (always added)
- $r[] = substr($field, 1)."=$value";
- else if ($allfields || ($value !== $this->_data[$field]))
- $r[] = "`$field`=".(isset($value) ? $this->escape_string($value) : 'NULL');
- }
-
- return $r ? 'SET '.implode(', ', $r) : '';
-}
-
-
-/**
- * Create an SQL query (the stuff after 'WHERE') according to an array of selection criteria.
- *
- * Example:
- * $sql = $table->_where(array('Type' => 'bar',
- * 'Date >=' => '1999-01-01', '-Date <' => 'NOW()',
- * 'User NI' => 'chris'), 'ORDER BY Date');
- *
- * @param $params optional array of fieldname => value tupels. These are ANDed to form a WHERE clause.
- * fieldname can contain an operator (separated by space), the default operator is '='.
- * The special operator 'NI' specifies that the argument must be contained in a comma-separated list.
- * @param $link DB link used to escape values (not used anymore)
- * @param $omit_where Do not add 'WHERE ' to result
- * @return The generated SQL clause
- * @see select()
- * @see iterate()
- */
-function _where($params = "", $dummy_link = null, $omit_where = false)
-{
- if (is_array($params) && (count($params) > 0))
- {
- $query = '';
- $stringquery = '';
- $sep = '';
-
- foreach($params as $field => $value)
- {
- if (is_int($field)) /* no key specified; just append */
- {
- if (strcasecmp($value, 'OR'))
- $stringquery .= " $value";
- else
- $sep = ' OR ';
- }
- else
- {
- $needs_where = true;
-
- if (!isset($value))
- {
- $op = 'IS';
- $qval = 'NULL';
- }
- else
- {
- if (preg_match('/^(\S+)\s+(\S.*)$/', $field, $regs))
- {
- $field = $regs[1];
- $op = strtoupper($regs[2]);
- }
- else
- $op = '=';
-
- # If field name starts with '-', the raw value is taken, no escaping is done and no quotes are put around it.
- if (substr($field, 0, 1) == '-')
- {
- $field = substr($field, 1); # Strip that '-' sign
- $qval = $value;
- }
- else if (!is_array($value))
- $qval = $this->escape_string((string)$value);
- }
-
- switch ($op)
- {
- case 'NI':
- if ($value)
- {
- $parts = array();
- foreach ((array)$value as $val)
- $parts[] = "CONCAT(',',$field,',') LIKE " . $this->escape_string("%,$val,%");
-
- $query .= $sep . "(" . join(" OR ", $parts) . ")";
- }
- else
- $query .= $sep . "1";
- break;
-
- case 'MATCH':
- $qval = join(' ', (array)$value);
- $query .= "$sep$op ($field) AGAINST (" . $this->escape_string($qval) . " IN BOOLEAN MODE)";
- break;
-
- case 'IN':
- case 'NOT IN':
- if (is_array($value))
- {
- if ($value)
- {
- $qvals = array();
-
- foreach ($value as $val)
- $qvals[] = $this->escape_string($val);
-
- $query .= "$sep$field $op (" . join(",", $qvals) . ")"; # null is mapped to ''
- }
- else
- $query .= $sep . (($op == 'IN') ? "0" : "1");
-
- break;
- }
- /* FALLTHROUGH */
-
- default:
- if (isset($qval))
- $query .= "$sep$field $op $qval";
- else
- it::fatal('Undefined $qval when constructing query due to invalid $value (array)');
- break;
- }
- $sep = ' AND ';
- }
- }
-
- $query .= $stringquery;
-
- if ($needs_where && !$omit_where)
- $query = "WHERE $query";
- }
-
- return $query;
-}
-
-
-/**
- * Internal: Output class name::error message and terminate execution.
- */
-function _fatal($text)
-{
- $text = get_class($this).'::'.$text;
-
- if ($this->_link && ($errstr = mysql_error($this->_link)))
- $text = "\"$errstr\" in $text [errno " . mysql_errno($this->_link) . "]";
-
- if ($this->_link && ($res = @mysql_fetch_row(mysql_query('select database()', $this->_link)))) # dont create extra errs
- $text .= ", DB: " . $res[0];
-
- it::fatal($text . ", Server: " . $this->_p['server']);
- /* NOT REACHED */
-}
-
-
-/**
- * Post-process data after reading a record.
- * This is a stub-function that can be overloaded.
- */
-function _read_post_process()
-{
-}
-
-
-/**
- * Pre-process data before writing a record.
- * This is a stub-function that can be overloaded.
- * @param $tags Reference to update/create tags, can be modified as needed
- * @param $command SQL command ('INSERT', 'REPLACE' or 'UPDATE')
- */
-function _write_pre_process(&$tags, $command) # NOPHPLINT
-{
-}
-
-
-/**
- * Clear record
- */
-function clear($pp = true)
-{
- foreach ((array)$this->_fields + (array)$this->_localizedfields as $field => $dummy)
- unset($this->$field);
- unset($this->_key, $this->_data);
-
- $pp && $this->_read_post_process();
-}
-
-
-/**
- * Semi-internal: send a raw SQL query and return mysql result value
- * @param $query complete SQL query string
- * @return raw MySQL result. May die if query fails and safety is big enough
- */
-function query($query, $p = array())
-{
- $p += $this->_p;
- $start = gettimeofday(true);
-
- if ($p['server_update'] && !preg_match('/^(EXPLAIN|SELECT|SHOW) /i', $query))
- {
- debug("switching to update server \"{$p['server_update']}\"", 5);
- $this->_p['server'] = $p['server'] = $p['server_update'];
- unset($this->_p['server_update'], $p['server_update'], $this->_link);
- }
-
- $this->_connect($p); # must be called after update server switching code
-
- debug("{$p['user']}@{$p['server']}:{$p['db']}" . '.' . get_class($this) . "::query(\"$query\")", 4);
-
- if (!($result = mysql_query($query, $this->_link)) && $p['safety'])
- {
- $errno = mysql_errno($this->_link);
- if (($p['safety'] < 2) && ($errno == 1062)) # Duplicate entry
- return false;
-
- if ($errno == 2006) # mysql server has gone away: retry
- {
- it::log('sqllog', "it_dbi(): reconnecting mysql_connect {$p['server']}, {$p['db']}");
- $this->_connect(array('reconnect' => true));
- $result = mysql_query($query, $this->_link);
- }
-
- if (!$result)
- $this->_fatal("query(\"$query\") failed");
- }
- else if (preg_match('/^(CREATE|ALTER|DROP) /i', $query))
- {
- # Purge cache for schema changes (after modifying table)
- $dbid = "{$p['user']}@{$p['server']}:{$p['db']}";
- it_dbi::_state_purgeshared($dbid);
- }
-
-
- $msec = round(1000 * (gettimeofday(true) - $start));
- $slow = $msec >= 2000;
- if ($GLOBALS['debug_sqllog'] || $GLOBALS['debug_sqltrace'] || $slow)
- {
- $backtrace = (EDC('sqltrace') || $slow) ? it_debug::backtrace(1) : null;
- it::log('sqllog', "$msec\t$query\t$backtrace\t" . $this->_p['server'] . ($slow ? "\tSLOW" : ""));
-
- $this->_sqllog[] = array(
- 'time' => $msec,
- 'query' => $query,
- ) + ($backtrace ? array('backtrace' => $backtrace) : array());
- }
-
- return $result;
-}
-
-
-/**
- * Read a single record by primary key, not destroying old query result $this->_result
- * @param $id primary key. If null, record is cleared
- * @return True if record could be read, false if not.
- */
-function read($id=null)
-{
- $old_result = $this->_result;
- $old_nofetch = $this->_nofetch;
- $result = $this->select(array($this->_p['keyfield'] => $id));
- $this->_result = $old_result;
- $this->_nofetch = $old_nofetch;
- return $result;
-}
-
-
-/**
- * Select a set of records from table and fetch the first one
- * @param $query One or more optional arrays of (field => value) or sqlstring pairs. Defaults to null (select all records)
- * Fields will be joined by AND
- * Fields can contain a compare operator: 'name LIKE' => "j%" or 'amount >' => 100
- * Fields can start with - to prevent quoting of right side: '-modified' => "CURDATE()"
- * $query can contain magic field 'SELECT' for things like 'COUNT(*)' or 'DISTINCT foo', defaults to '*'
- * $query can contain magic field 'JOIN' for things like 'tableA LEFT JOIN tableB ON a=b', defaults to table name
- * $query can contain 'CALC_FOUND_ROWS', if true member var _found_rows contains number of matching rows before LIMIT
- * $query can contain 'NOFETCH', if true the first row is not prefetched (e.g. when directly using _result)
- * @return Number of matching rows, use iterate() to fetch the next record
- * @see iterate()
- * @see _where()
- */
-function select(/* $query = array|string, ... */)
-{
- $query = array();
- foreach (func_get_args() as $arg)
- $query = array_merge($query, (array)$arg);
-
- $this->_connect();
-
- $result = 0;
- $calc_found_rows = false;
-
- $what = '*';
- if (isset($query['SELECT']))
- {
- $what = $query['SELECT'];
- unset($query['SELECT']);
- }
-
- $join = $this->_p['table'];
- if (isset($query['JOIN'])) # WARNING: this field gets abused for "tablename USE INDEX (fast2)
- {
- $join = $query['JOIN'];
- unset($query['JOIN']);
- }
-
- unset($this->_found_rows);
- if (isset($query['CALC_FOUND_ROWS']) && $query['CALC_FOUND_ROWS'])
- {
- $calc_found_rows = true;
- $what = 'SQL_CALC_FOUND_ROWS '.$what;
- }
- unset($query['CALC_FOUND_ROWS']); # Always unset, so CALC_FOUND_ROWS => false doesn't generate bogus query
-
- if (EDC('nocache'))
- $what = 'SQL_NO_CACHE ' . $what;
-
- $nofetch = $this->_nofetch = $query['NOFETCH'];
- unset($query['NOFETCH']);
-
- $this->clear(false);
- if ($this->_result = $this->query($sql = "SELECT $what FROM $join " . $this->_where($query, $this->_link)))
- {
- $result = mysql_num_rows($this->_result);
-
- if ($calc_found_rows)
- {
- list($count) = mysql_fetch_row($this->query('SELECT FOUND_ROWS()'));
- $this->_found_rows = intval($count);
- }
-
- if (!$this->iterate() && ($this->_p['safety'] >= 2))
- $this->_fatal("select(): query produced no results: \"$sql\"");
- }
-
- $this->_nofetch = !$nofetch;
-
- return $result;
-}
-
-
-/**
- * Puts next result from previous select() in member variables
- * @return true if another record was fetched, false if no more records
- * @see select()
- */
-function iterate()
-{
- if (!$this->_nofetch)
- {
- if ($this->_data = mysql_fetch_assoc($this->_result))
- {
- if ($localizedfields = $this->_localizedfields)
- foreach ($localizedfields as $field => $dummy)
- unset($this->$field);
-
- foreach ($this->_data as $field => $value)
- $this->$field = (isset($value) && $this->_convertfunc[$field]) ? ($this->_data[$field] = $this->_convertfunc[$field]($value)) : $value;
-
- if ($localizedfields)
- {
- $lang = T_lang();
- foreach ($localizedfields as $field => $dummy)
- {
- $value = $this->{$field . "_" . $lang};
-
- if (!isset($value))
- $value = $this->{$field . "_" . $this->_p['localized_defaultlanguage']};
-
- if (isset($value))
- {
- if (isset($this->$field))
- it::fatal("Field name clash: Overwriting {$this->_p['table']}.$field with {$field}_{$lang}, only use one of those fields");
- else
- $this->$field = $value;
- }
- }
- }
-
- if (!empty($this->_p['keyfield']))
- $this->_key = $this->_data[$this->_p['keyfield']];
- }
- else
- $this->clear(false);
-
- $this->_read_post_process();
- }
- else
- $this->_nofetch = false;
-
- return (bool)$this->_data;
-}
-
-
-/**
- * Insert a record into table. Values are taken from member vars and $tags.
- * After inserting, all values are valid (record is read back).
- * Does not destroy internal state of last select() call
- * @param $tags Additional key => value pairs (these have priority over member vars)
- */
-function insert($tags = array(), $command = "INSERT")
-{
- $this->_connect();
-
- /* Pre-processing, $tags is passed by reference and may be modified here */
- $this->_write_pre_process($tags, $command);
-
- if ($this->_p['randomid'] && !isset($tags[$this->_p['keyfield']]))
- $tags[$this->_p['keyfield']] = md5(uniqid(mt_rand()));
-
- $set = $this->_set($tags, true);
-
- if ($result = $this->query("$command INTO {$this->_p['table']} " . $set))
- {
- $id = ($this->_p['autoincrement'] && !isset($tags[$this->_p['keyfield']])) ? mysql_insert_id($this->_link) : $tags[$this->_p['keyfield']];
- if ($this->_p['keyfield'] && !$this->read($id) && $this->_p['safety'])
- $this->_fatal("insert(): can't read record back (key truncated?), id=\"$id\"");
- }
- else
- $this->clear(false);
-
- return $result;
-}
-
-
-/**
- * Replace a record in a table
- * @param $tags Additional key => value pairs (these have priority over member vars)
- * Does not destroy internal state of last select() call
- * @see insert()
- */
-function replace($tags = array())
-{
- return $this->insert($tags, "REPLACE");
-}
-
-
-/**
- * Update current record or a number of records given by where condition
- * @param $tags key => value pairs (these have priority over changes in member vars)
- * @param $where condition to select records to be modified (if not current record)
- * @return number of updated records (or false on error). WARNING: read LIMIT docs before using it
- * Does not destroy internal state of last select() call
- */
-function update($tags = array(), $where = null)
-{
- $this->_connect();
- $result = true;
-
- /* Pre-processing, $tags is passed by reference and may be modified here */
- $this->_write_pre_process($tags, 'UPDATE');
-
- if ($set = $this->_set($tags, isset($where)))
- {
- if (!isset($where))
- $where = array($this->_p['keyfield'] => $this->_data[$this->_p['keyfield']]);
-
- if ($result = $this->query("UPDATE {$this->_p['table']} $set " . $this->_where($where, $this->_link)))
- {
- $result = mysql_affected_rows($this->_link);
-
- if (array_key_exists($this->_p['keyfield'], $tags)) # Did we just update the key?
- $this->_key = $tags[$this->_p['keyfield']];
-
- if (isset($this->_key) && $this->read($this->_key))
- $this->_nofetch = false; # So we can do while(iterate()) update();
- }
- }
-
- return $result;
-}
-
-
-/**
- * Delete a record
- * Does not destroy query result $this->_result
- * @param $query optional query for WHERE, default: delete currently loaded record
- * @return number of deleted records
- */
-function delete($query = null)
-{
- $this->_connect();
- $result = 0;
-
- if (!$query && $this->_p['keyfield'])
- {
- $query = array($this->_p['keyfield'] => $this->_key);
- $this->clear();
- }
-
- if ($query && $this->query("DELETE FROM {$this->_p['table']} " . $this->_where($query, $this->_link)))
- $result = mysql_affected_rows($this->_link);
-
- return $result;
-}
-
-
-/**
- * Escapes a string for use in a DB query
- * @param The string to be quoted
- * @return The quoted value
- */
-function escape_string($str)
-{
- $this->_connect();
- return "'" . mysql_real_escape_string($str, $this->_link) . "'";
-}
-
-
-/**
- * INTERNAL: Store information about a table's fields in $this->_fields, possibly from cache.
- * @return array(keyfield, autoincrement, randomid)
- */
-function _get_field_info()
-{
- $result = array();
- $dbid = "{$this->_p['user']}@{$this->_p['server']}:{$this->_p['db']}";
- $state = it_dbi::_state_get($dbid);
-
- if (!($this->_fields = $state['fields'][$this->_p['table']]))
- {
- debug("it_dbi(): no fields for {$dbid}.{$this->_p['table']}, calculating.", 5);
- for ($res = $this->query('SHOW COLUMNS FROM ' . $this->_p['table']); $res && ($field = mysql_fetch_assoc($res)); )
- {
- $this->_fields[$field['Field']] = $field + array('Length' => preg_match('/date|time/', $field['Type']) ? 20 : intval(it::match('\d+', $field['Type'])));
- if (preg_match('/^(tiny|small|medium|)int|^float|^double/', $field['Type']))
- $this->_convertfunc[$field['Field']] = it::match('int', $field['Type']) ? "intval" : "floatval";
- }
-
- # Consider all fields which have _{localized_defaultlanguage} suffix as localized
- foreach (preg_grep('/_' . $this->_p['localized_defaultlanguage'] . '$/', array_keys((array)$this->_fields)) as $field)
- $this->_localizedfields[substr($field, 0, -1 - strlen($this->_p['localized_defaultlanguage']))] = true;
-
- $state = it_dbi::_state_get($dbid); # State could have been modified by query above
- $state['fields'][$this->_p['table']] = $this->_fields;
- $state['convertfunc'][$this->_p['table']] = $this->_convertfunc;
- it_dbi::_state_put($dbid, $state);
- }
- else # Existing _fields, copy other info too
- $this->_convertfunc = $state['convertfunc'][$this->_p['table']];
-
- foreach((array)$this->_fields as $field)
- {
- if ($field['Key'] == 'PRI')
- {
- $result = array('keyfield' => $field['Field'], 'autoincrement' => (strpos($field['Extra'], "auto_increment") !== false),
- 'randomid' => (strpos($field['Type'], "char") !== false));
- break;
- }
- }
-
- unset($GLOBALS['it_dbi']->_p['table'], $GLOBALS['it_dbi']->_p['keyfield']); # Remove cruft
- return $result;
-}
-
-function _state_get($dbid)
-{
- if (!($result = $GLOBALS['it_dbi']->_state[$dbid]))
- $result = $GLOBALS['it_dbi']->_state[$dbid] = (array)it_cache::get("dbi:$dbid");
-
- #var_dump("get", $dbid, $result);
- return $result;
-}
-
-function _state_put($dbid, $state, $shared = true)
-{
- #var_dump("put", $dbid, $state);
- $GLOBALS['it_dbi']->_state[$dbid] = $state;
- if ($shared)
- it_cache::put("dbi:$dbid", array('link' => null) + (array)$state); # link is not transferable
-}
-
-function _state_purgeshared($dbid)
-{
- #var_dump("purgeshared", $dbid);
- it_cache::put("dbi:$dbid", array()); # Nuke shared cache
-}
-
-#
-# Implement PHP 5 Iterator interface to make foreach work
-# Example: foreach (new T_User('firstname' => "foo") as $foouser) { ... }
-#
-function current()
-{
- return $this;
-}
-
-function key()
-{
- return isset($this->_key) ? $this->_key : $this->_iteratorkey++;
-}
-
-function next()
-{
- $this->iterate();
-}
-
-function rewind()
-{
- if (!$this->_result) # Object without query used in foreach
- $this->select();
-
- # Only rewind if not already at start and results present
- if (!$this->_nofetch && mysql_num_rows($this->_result))
- mysql_data_seek($this->_result, 0);
-
- $this->_iteratorkey = 0;
- $this->iterate();
-}
-
-function valid()
-{
- return (bool)$this->_data;
-}
-
-} /* End class it_dbi */
-
-?>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 20:47:09 +0000