egroupware_official/etemplate/inc/class.so_sql.inc.php

1611 lines
47 KiB
PHP

<?php
/**
* eGroupWare generalized SQL Storage Object
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @link http://www.egroupware.org
* @author Ralf Becker <RalfBecker@outdoor-training.de>
* @copyright 2002-9 by RalfBecker@outdoor-training.de
* @version $Id$
*/
/**
* generalized SQL Storage Object
*
* the class can be used in following ways:
* 1) by calling the constructor with an app and table-name or
* 2) by setting the following documented class-vars in a class derifed from this one
* Of cause can you derife the class and call the constructor with params.
*
* @package etemplate
* @subpackage api
* @author RalfBecker-AT-outdoor-training.de
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @todo modify search() to return an interator instead of an array
*/
class so_sql
{
/**
* need to be set in the derived class to the db-table-name
*
* @var string
*/
var $table_name;
/**
* db-col-name of autoincrement id or ''
*
* @var string
*/
var $autoinc_id = '';
/**
* all cols in data which are not (direct)in the db, for data_merge
*
* @var array
*/
var $non_db_cols = array();
/**
* 4 turns on the so_sql debug-messages, default 0
*
* @var int
*/
var $debug = 0;
/**
* string to be written to db if a col-value is '', eg. "''" or 'NULL' (default)
*
* @var string
*/
var $empty_on_write = 'NULL';
/**
* total number of entries of last search with start != false
*
* @var int|boolean
*/
var $total = false;
/**
* protected instance or reference (depeding on $no_clone param of constructor) of the db-object
*
* @var egw_db
*/
protected $db;
/**
* unique keys/index, set by derived class or via so_sql($app,$table)
*
* @var array
*/
var $db_uni_cols = array();
/**
* db-col-name / internal-name pairs, set by derived calls or via so_sql($app,$table)
*
* @var array
*/
var $db_key_cols = array();
/**
* db-col-name / internal-name pairs, set by derived calls or via so_sql($app,$table)
*
* @var array
*/
var $db_data_cols = array();
/**
* @var array $db_cols all columns = $db_key_cols + $db_data_cols, set in the constructor
*/
var $db_cols = array();
/**
* eGW table definition
*
* @var array
*/
var $table_def = array();
/**
* Appname to use in all queries, set via constructor
*
* @var string
*/
var $app;
/**
* holds the content of all columns
*
* @var array
*/
var $data = array();
/**
* Timestaps that need to be adjusted to user-time on reading or saving
*
* @var array
*/
var $timestamps = array();
/**
* Type of timestamps returned by this class (read and search methods), default null means leave them unchanged
*
* Possible values:
* - 'ts'|'integer' convert every timestamp to an integer unix timestamp
* - 'string' convert every timestamp to a 'Y-m-d H:i:s' string
* - 'object' convert every timestamp to a egw_time object
*
* @var string
*/
public $timestamp_type;
/**
* Offset in secconds between user and server-time, it need to be add to a server-time to get the user-time
* or substracted from a user-time to get the server-time
*
* @var int
* @deprecated use egw_time methods instead, as the offset between user and server time is only valid for current time
*/
var $tz_offset_s;
/**
* Current time in user timezone
*
* @var int|string|DateTime format depends on $this->timestamp_type
*/
var $now;
/**
* Which columns should be searched, if a non-empty string is passed to criteria parameter of search()
*
* If not set (by extending class), all data columns will be searched.
*
* @var array
*/
var $columns_to_search;
/**
* Should search return an iterator (true) or an array (false = default)
*
* @var boolean
*/
public $search_return_iterator = false;
/**
* constructor of the class
*
* NEED to be called from the constructor of the derived class !!!
*
* @param string $app should be set if table-defs to be read from <app>/setup/tables_current.inc.php
* @param string $table should be set if table-defs to be read from <app>/setup/tables_current.inc.php
* @param egw_db $db database object, if not the one in $GLOBALS['egw']->db should be used, eg. for an other database
* @param string $colum_prefix='' column prefix to automatic remove from the column-name, if the column name starts with it
* @param boolean $no_clone=false can we avoid to clone the db-object, default no
* new code using appnames and foreach(select(...,$app) can set it to avoid an extra instance of the db object
* @param string $timestamp_type=null default null=leave them as is, 'ts'|'integer' use integer unix timestamps,
* 'object' use egw_time objects or 'string' use DB timestamp (Y-m-d H:i:s) string
*
* @return so_sql
*/
function __construct($app='',$table='',$db=null,$column_prefix='',$no_clone=false,$timestamp_type=null)
{
if ($no_clone)
{
$this->db = is_object($db) ? $db : $GLOBALS['egw']->db;
}
else
{
$this->db = is_object($db) ? clone($db) : clone($GLOBALS['egw']->db);
}
$this->db_cols = $this->db_key_cols + $this->db_data_cols;
if ($app)
{
$this->app = $app;
if (!$no_clone) $this->db->set_app($app);
if ($table) $this->setup_table($app,$table,$column_prefix);
}
$this->init();
if ((int) $this->debug >= 4)
{
echo "<p>so_sql('$app','$table')</p>\n";
_debug_array($this);
}
$this->set_times($timestamp_type);
}
/**
* Set class vars timestamp_type, now and tz_offset_s
*
* @param string|boolean $timestamp_type=false default false do NOT set time_stamptype,
* null=leave them as is, 'ts'|'integer' use integer unix timestamps, 'object' use egw_time objects,
* 'string' use DB timestamp (Y-m-d H:i:s) string
*/
public function set_times($timestamp_type=false)
{
if ($timestamp_type !== false) $this->timestamp_type = $timestamp_type;
// set current time
switch($this->timestamp_type)
{
case 'object':
$this->now = new egw_time('now');
break;
case 'string':
$this->now = egw_time::to('now',egw_time::DATABASE);
break;
default:
$this->now = egw_time::to('now','ts');
}
$this->tz_offset_s = egw_time::tz_offset_s();
}
/**
* php4 constructor
*
* @deprecated use __construct
*/
function so_sql($app='',$table='',$db=null,$column_prefix='',$no_clone=false)
{
self::__construct($app,$table,$db,$column_prefix,$no_clone);
}
/**
* sets up the class for an app and table (by using the table-definition of $app/setup/tables_current.inc.php
*
* If you need a more complex conversation then just removing the column_prefix, you have to do so in a derifed class !!!
*
* @param string $app app-name $table belongs too
* @param string $table table-name
* @param string $colum_prefix='' column prefix to automatic remove from the column-name, if the column name starts with it
*/
function setup_table($app,$table,$colum_prefix='')
{
$this->table_name = $table;
$this->table_def = $this->db->get_table_definitions($app,$table);
if (!$this->table_def || !is_array($this->table_def['fd']))
{
echo "<p>so_sql::setup_table('$app','$table'): No table definitions found !!!<br>\n".function_backtrace()."</p>\n";
}
$this->db_key_cols = $this->db_data_cols = $this->db_cols = array();
$this->autoinc_id = '';
$len_prefix = strlen($colum_prefix);
foreach($this->table_def['fd'] as $col => $def)
{
$name = $col;
if ($len_prefix && substr($name,0,$len_prefix) == $colum_prefix)
{
$name = substr($col,$len_prefix);
}
if (in_array($col,$this->table_def['pk']))
{
$this->db_key_cols[$col] = $name;
}
else
{
$this->db_data_cols[$col] = $name;
}
$this->db_cols[$col] = $name;
if ($def['type'] == 'auto')
{
$this->autoinc_id = $col;
}
foreach($this->table_def['uc'] as $k => $uni_index)
{
if (is_array($uni_index) && in_array($name,$uni_index))
{
$this->db_uni_cols[$k][$col] = $name;
}
elseif($name === $uni_index)
{
$this->db_uni_cols[$col] = $name;
}
}
}
}
/**
* Add all timestamp fields to $this->timestamps to get automatically converted to usertime
*
*/
function convert_all_timestamps()
{
$check_already_included = !empty($this->timestamps);
foreach($this->table_def['fd'] as $name => $data)
{
if ($data['type'] == 'timestamp' && (!$check_already_included || !in_array($name,$this->timestamps)))
{
$this->timestamps[] = $name;
}
}
}
/**
* merges in new values from the given new data-array
*
* @param $new array in form col => new_value with values to set
*/
function data_merge($new)
{
if ((int) $this->debug >= 4) echo "<p>so_sql::data_merge(".print_r($new,true).")</p>\n";
if (!is_array($new) || !count($new))
{
return;
}
foreach($this->db_cols as $db_col => $col)
{
if (array_key_exists($col,$new))
{
$this->data[$col] = $new[$col];
}
}
foreach($this->non_db_cols as $db_col => $col)
{
if (array_key_exists($col,$new))
{
$this->data[$col] = $new[$col];
}
}
if (isset($new[self::USER_TIMEZONE_READ]))
{
$this->data[self::USER_TIMEZONE_READ] = $new[self::USER_TIMEZONE_READ];
}
if ((int) $this->debug >= 4) _debug_array($this->data);
}
/**
* changes the data from the db-format to your work-format
*
* It gets called everytime when data is read from the db.
* This default implementation only converts the timestamps mentioned in $this->timestamps from server to user time.
* You can reimplement it in a derived class like this:
*
* function db2data($data=null)
* {
* if (($intern = !is_array($data)))
* {
* $data =& $this->data;
* }
* // do your own modifications here
*
* return parent::db2data($intern ? null : $data); // important to use null, if $intern!
* }
*
* @param array $data=null if given works on that array and returns result, else works on internal data-array
* @return array
*/
function db2data($data=null)
{
if (!is_array($data))
{
$data = &$this->data;
}
if ($this->timestamps)
{
foreach($this->timestamps as $name)
{
if (isset($data[$name]) && $data[$name])
{
$data[$name] = egw_time::server2user($data[$name],$this->timestamp_type);
}
}
}
return $data;
}
/**
* changes the data from your work-format to the db-format
*
* It gets called everytime when data gets writen into db or on keys for db-searches.
* This default implementation only converts the timestamps mentioned in $this->timestampfs from user to server time.
* You can reimplement it in a derived class like this:
*
* function data2db($data=null)
* {
* if (($intern = !is_array($data)))
* {
* $data =& $this->data;
* }
* // do your own modifications here
*
* return parent::data2db($intern ? null : $data); // important to use null, if $intern!
* }
*
* @param array $data=null if given works on that array and returns result, else works on internal data-array
* @return array
*/
function data2db($data=null)
{
if (!is_array($data))
{
$data = &$this->data;
}
if ($this->timestamps)
{
foreach($this->timestamps as $name)
{
if (isset($data[$name]) && $data[$name])
{
$data[$name] = egw_time::user2server($data[$name],$this->timestamp_type);
}
}
}
return $data;
}
/**
* initializes data with the content of key
*
* @param array $keys=array() array with keys in form internalName => value
* @return array internal data after init
*/
function init($keys=array())
{
$this->data = array();
$this->db2data();
$this->data_merge($keys);
return $this->data;
}
/**
* Name of automatically set user timezone field from read
*/
const USER_TIMEZONE_READ = 'user_timezone_read';
/**
* reads row matched by key and puts all cols in the data array
*
* @param array $keys array with keys in form internalName => value, may be a scalar value if only one key
* @param string|array $extra_cols='' string or array of strings to be added to the SELECT, eg. "count(*) as num"
* @param string $join='' sql to do a join, added as is after the table-name, eg. ", table2 WHERE x=y" or
* @return array|boolean data if row could be retrived else False
*/
function read($keys,$extra_cols='',$join='')
{
if (!is_array($keys))
{
$pk = array_values($this->db_key_cols);
if ($pk) $keys = array($pk[0] => $keys);
}
$this->init($keys);
$this->data2db();
$query = false;
foreach ($this->db_key_cols as $db_col => $col)
{
if ($this->data[$col] != '')
{
$query[$db_col] = $this->data[$col];
}
}
if (!$query) // no primary key in keys, lets try the data_cols for a unique key
{
foreach($this->db_uni_cols as $db_col => $col)
{
if (!is_array($col) && $this->data[$col] != '')
{
$query[$db_col] = $this->data[$col];
}
elseif(is_array($col))
{
$q = array();
foreach($col as $db_c => $c)
{
if ($this->data[$col] == '')
{
$q = null;
break;
}
$q[$db_c] = $this->data[$c];
}
if ($q) $query += $q;
}
}
}
if (!$query) // no unique key in keys, lets try everything else
{
foreach($this->db_data_cols as $db_col => $col)
{
if ($this->data[$col] != '')
{
$query[$db_col] = $this->data[$col];
}
}
}
if (!$query) // keys has no cols
{
$this->db2data();
return False;
}
if ($join) // Prefix the columns with the table-name, as they might exist in the join
{
foreach($query as $col => $val)
{
if (is_int($col) || strpos($join,$col) === false) continue;
$query[] = $this->db->expression($this->table_name,$this->table_name.'.',array($col=>$val));
unset($query[$col]);
}
}
foreach($this->db->select($this->table_name,'*'.($extra_cols?','.(is_array($extra_cols)?implode(',',$extra_cols):$extra_cols):''),
$query,__LINE__,__FILE__,False,'',$this->app,0,$join) as $row)
{
$cols = $this->db_cols;
if ($extra_cols) // extra columns to report
{
foreach(is_array($extra_cols) ? $extra_cols : array($extra_cols) as $col)
{
if (FALSE!==stripos($col,' as ')) $col = preg_replace('/^.* as *([a-z0-9_]+) *$/i','\\1',$col);
$cols[$col] = $col;
}
}
foreach ($cols as $db_col => $col)
{
$this->data[$col] = $row[$db_col];
}
$this->db2data();
// store user timezone used for reading
$this->data[self::USER_TIMEZONE_READ] = egw_time::$user_timezone->getName();
if ((int) $this->debug >= 4)
{
echo "data =\n"; _debug_array($this->data);
}
return $this->data;
}
if ($this->autoinc_id)
{
unset($this->data[$this->db_key_cols[$this->autoinc_id]]);
}
if ((int) $this->debug >= 4) echo "nothing found !!!</p>\n";
$this->db2data();
return False;
}
/**
* saves the content of data to the db
*
* @param array $keys=null if given $keys are copied to data before saveing => allows a save as
* @param string|array $extra_where=null extra where clause, eg. to check an etag, returns true if no affected rows!
* @return int|boolean 0 on success, or errno != 0 on error, or true if $extra_where is given and no rows affected
*/
function save($keys=null,$extra_where=null)
{
if (is_array($keys) && count($keys)) $this->data_merge($keys);
// check if data contains user timezone during read AND user changed timezone since then
// --> load old timezone for the rest of this request
// this only a grude hack, better handle this situation in app code:
// history logging eg. depends on old data read before calling save, which is then in new timezone!
// anyway it's better fixing it here then not fixing it at all ;-)
if (isset($this->data[self::USER_TIMEZONE_READ]) && $this->data[self::USER_TIMEZONE_READ] != egw_time::$user_timezone->getName())
{
//echo "<p>".__METHOD__."() User change TZ since read! tz-read=".$this->data[self::USER_TIMEZONE_READ].' != current-tz='.egw_time::$user_timezone->getName()." --> fixing</p>\n";
error_log(__METHOD__."() User changed TZ since read! tz-read=".$this->data[self::USER_TIMEZONE_READ].' != current-tz='.egw_time::$user_timezone->getName()." --> fixing</p>");
$GLOBALS['egw_info']['user']['preferences']['common']['tz'] = $this->data[self::USER_TIMEZONE_READ];
egw_time::setUserPrefs($this->data[self::USER_TIMEZONE_READ]);
$this->set_times();
}
$this->data2db();
if ((int) $this->debug >= 4) { echo "so_sql::save(".print_r($keys,true).") autoinc_id='$this->autoinc_id', data="; _debug_array($this->data); }
if ($this->autoinc_id && !$this->data[$this->db_key_cols[$this->autoinc_id]]) // insert with auto id
{
foreach($this->db_cols as $db_col => $col)
{
if (!$this->autoinc_id || $db_col != $this->autoinc_id) // not write auto-inc-id
{
if (!array_key_exists($col,$this->data) && // handling of unset columns in $this->data
(isset($this->table_def['fd'][$db_col]['default']) || // we have a default value
!isset($this->table_def['fd'][$db_col]['nullable']) || $this->table_def['fd'][$db_col]['nullable'])) // column is nullable
{
continue; // no need to write that (unset) column
}
if ($this->table_def['fd'][$db_col]['type'] == 'varchar' &&
strlen($this->data[$col]) > $this->table_def['fd'][$db_col]['precision'])
{
// truncate the field to mamimum length, if upper layers didn't care
$data[$db_col] = substr($this->data[$col],0,$this->table_def['fd'][$db_col]['precision']);
}
else
{
$data[$db_col] = (string) $this->data[$col] === '' && $this->empty_on_write == 'NULL' ? null : $this->data[$col];
}
}
}
$this->db->insert($this->table_name,$data,false,__LINE__,__FILE__,$this->app);
if ($this->autoinc_id)
{
$this->data[$this->db_key_cols[$this->autoinc_id]] = $this->db->get_last_insert_id($this->table_name,$this->autoinc_id);
}
}
else // insert in table without auto id or update of existing row, dont write colums unset in $this->data
{
foreach($this->db_data_cols as $db_col => $col)
{
// we need to update columns set to null: after a $this->data[$col]=null:
// - array_key_exits($col,$this->data) === true
// - isset($this->data[$col]) === false
if (!array_key_exists($col,$this->data) && // handling of unset columns in $this->data
($this->autoinc_id || // update of table with auto id or
isset($this->table_def['fd'][$db_col]['default']) || // we have a default value or
!isset($this->table_def['fd'][$db_col]['nullable']) || $this->table_def['fd'][$db_col]['nullable'])) // column is nullable
{
continue; // no need to write that (unset) column
}
$data[$db_col] = !is_object($this->data[$col]) && (string) $this->data[$col] === '' && $this->empty_on_write == 'NULL' ? null : $this->data[$col];
}
// allow to add direct sql updates, eg. "etag=etag+1" with int keys
if (is_array($keys) && isset($keys[0]))
{
for($n=0; isset($keys[$n]); ++$n)
{
$data[] = $keys[$n];
}
}
$keys = $extra_where;
foreach($this->db_key_cols as $db_col => $col)
{
$keys[$db_col] = $this->data[$col];
}
if (!$data && !$this->autoinc_id) // happens if all columns are in the primary key
{
$data = $keys;
$keys = False;
}
if ($this->autoinc_id)
{
$this->db->update($this->table_name,$data,$keys,__LINE__,__FILE__,$this->app);
if (($nothing_affected = !$this->db->Errno && !$this->db->affected_rows()) && $extra_where)
{
return true; // extra_where not met, eg. etag wrong
}
}
// always try an insert if we have no autoinc_id, as we dont know if the data exists
if (!$this->autoinc_id || $nothing_affected)
{
$this->db->insert($this->table_name,$data,$keys,__LINE__,__FILE__,$this->app);
}
}
$this->db2data();
return $this->db->Errno;
}
/**
* Update only the given fields, if the primary key is not given, it will be taken from $this->data
*
* @param array $fields
* @param boolean $merge=true if true $fields will be merged with $this->data (after update!), otherwise $this->data will be just $fields
* @return int|boolean 0 on success, or errno != 0 on error, or true if $extra_where is given and no rows affected
*/
function update($fields,$merge=true)
{
if ($merge) $this->data_merge($fields);
$fields = $this->data2db($fields);
// extract the keys from $fields or - if not set there - from $this->data
$keys = array();
foreach($this->db_key_cols as $col => $name)
{
$keys[$col] = isset($fields[$name]) ? $fields[$name] : $this->data[$name];
unset($fields[$name]);
}
// extract the data from $fields
$data = array();
foreach($this->db_data_cols as $col => $name)
{
if (array_key_exists($name,$fields))
{
$data[$col] = $fields[$name];
unset($fields[$name]);
}
}
// add direct sql like 'etag=etag+1' (it has integer keys)
foreach($fields as $key => $value)
{
if (is_int($key))
{
$data[] = $value;
}
}
if (!$data)
{
return 0; // nothing to update
}
if (!$this->db->update($this->table_name,$data,$keys,__LINE__,__FILE__,$this->app))
{
return $this->db->Errno;
}
return 0;
}
/**
* deletes row representing keys in internal data or the supplied $keys if != null
*
* @param array|int $keys=null if given array with col => value pairs to characterise the rows to delete, or integer autoinc id
* @param boolean $only_return_query=false return $query of delete call to db object, but not run it (used by so_sql_cf!)
* @return int|array affected rows, should be 1 if ok, 0 if an error or array with id's if $only_return_ids
*/
function delete($keys=null,$only_return_query=false)
{
if ($this->autoinc_id && $keys && !is_array($keys))
{
$keys = array($this->autoinc_id => $keys);
}
if (!is_array($keys) || !count($keys)) // use internal data
{
$data = $this->data;
$keys = $this->db_key_cols;
}
else // data and keys are supplied in $keys
{
$data = $keys; $keys = array();
foreach($this->db_cols as $db_col => $col)
{
if (isset($data[$col]))
{
$keys[$db_col] = $col;
}
}
}
$data = $this->data2db($data);
foreach($keys as $db_col => $col)
{
$query[$db_col] = $data[$col];
}
if ($only_return_query) return $query;
$this->db->delete($this->table_name,$query,__LINE__,__FILE__,$this->app);
return $this->db->affected_rows();
}
/**
* searches db for rows matching searchcriteria
*
* '*' and '?' are replaced with sql-wildcards '%' and '_'
*
* For a union-query you call search for each query with $start=='UNION' and one more with only $order_by and $start set to run the union-query.
*
* @param array|string $criteria array of key and data cols, OR string with search pattern (incl. * or ? as wildcards)
* @param boolean|string|array $only_keys=true True returns only keys, False returns all cols. or
* comma seperated list or array of columns to return
* @param string $order_by='' fieldnames + {ASC|DESC} separated by colons ',', can also contain a GROUP BY (if it contains ORDER BY)
* @param string|array $extra_cols='' string or array of strings to be added to the SELECT, eg. "count(*) as num"
* @param string $wildcard='' appended befor and after each criteria
* @param boolean $empty=false False=empty criteria are ignored in query, True=empty have to be empty in row
* @param string $op='AND' defaults to 'AND', can be set to 'OR' too, then criteria's are OR'ed together
* @param mixed $start=false if != false, return only maxmatch rows begining with start, or array($start,$num), or 'UNION' for a part of a union query
* @param array $filter=null if set (!=null) col-data pairs, to be and-ed (!) into the query without wildcards
* @param string $join='' sql to do a join, added as is after the table-name, eg. "JOIN table2 ON x=y" or
* "LEFT JOIN table2 ON (x=y AND z=o)", Note: there's no quoting done on $join, you are responsible for it!!!
* @param boolean $need_full_no_count=false If true an unlimited query is run to determine the total number of rows, default false
* @todo return an interator instead of an array
* @return array|NULL array of matching rows (the row is an array of the cols) or NULL
*/
function &search($criteria,$only_keys=True,$order_by='',$extra_cols='',$wildcard='',$empty=False,$op='AND',$start=false,$filter=null,$join='',$need_full_no_count=false)
{
if ((int) $this->debug >= 4) echo "<p>so_sql::search(".print_r($criteria,true).",'$only_keys','$order_by',".print_r($extra_cols,true).",'$wildcard','$empty','$op','$start',".print_r($filter,true).",'$join')</p>\n";
// if extending class or instanciator set columns to search, convert string criteria to array
if ($criteria && !is_array($criteria))
{
$search = $this->search2criteria($criteria,$wildcard,$op);
$criteria = array($search);
}
if (!is_array($criteria))
{
$query = $criteria;
}
else
{
$criteria = $this->data2db($criteria);
foreach($criteria as $col => $val)
{
if (is_int($col))
{
$query[] = $val;
}
elseif ($empty || $val != '')
{
if (!($db_col = array_search($col,$this->db_cols)))
{
$db_col = $col;
}
if ($val === '')
{
if (isset($this->table_def['fd'][$db_col]) &&
$this->table_def['fd'][$db_col]['type'] == 'varchar' &&
$this->table_def['fd'][$db_col]['nullable'] !== false)
{
unset($criteria[$col]);
$query[] = '(' . $db_col . ' IS NULL OR ' . $db_col . " = '')";
}
else
{
$query[$db_col] = '';
}
}
elseif ($wildcard || $criteria[$col][0] == '!' ||
is_string($criteria[$col]) && (strpos($criteria[$col],'*')!==false || strpos($criteria[$col],'?')!==false))
{
// if search pattern alread contains a wildcard, do NOT add further ones automatic
if (is_string($criteria[$col]) && (strpos($criteria[$col],'*')!==false || strpos($criteria[$col],'?')!==false))
{
$wildcard = '';
}
$cmp_op = ' '.$this->db->capabilities['case_insensitive_like'].' ';
$negate = false;
if ($criteria[$col][0] == '!')
{
$cmp_op = ' NOT'.$cmp_op;
$criteria[$col] = substr($criteria[$col],1);
$negate = true;
}
foreach(explode(' ',$criteria[$col]) as $crit)
{
$query[] = ($negate ? ' ('.$db_col.' IS NULL OR ' : '').$db_col.$cmp_op.
$this->db->quote($wildcard.str_replace(array('%','_','*','?'),array('\\%','\\_','%','_'),$crit).$wildcard).
($negate ? ') ' : '');
}
}
elseif (strpos($db_col,'.') !== false) // we have a table-name specified
{
list($table,$only_col) = explode('.',$db_col);
if (is_array($val) && count($val) > 1)
{
array_walk($val,array($this->db,'quote'),$this->table_def['fd'][$only_col]['type']);
$query[] = $sql = $db_col.' IN (' .implode(',',$val).')';
}
else
{
$query[] = $db_col.'='.$this->db->quote(is_array($val)?array_shift($val):$val,$this->table_def['fd'][$only_col]['type']);
}
}
else
{
$query[$db_col] = $criteria[$col];
}
}
}
if (is_array($query) && $op != 'AND') $query = $this->db->column_data_implode(' '.$op.' ',$query);
}
if (is_array($filter))
{
$db_filter = array();
$data2db_filter = $this->data2db($filter);
if (!is_array($data2db_filter)) {
echo function_backtrace()."<br/>\n";
echo "filter=";_debug_array($filter);
echo "data2db(filter)=";_debug_array($data2db_filter);
}
foreach($data2db_filter as $col => $val)
{
if ($val !== '')
{
// check if a db-internal name conversation necessary
if (!is_int($col) && ($c = array_search($col,$this->db_cols)))
{
$col = $c;
}
if(is_int($col))
{
$db_filter[] = $val;
}
elseif ($val === "!''")
{
$db_filter[] = $col." != ''";
}
else
{
$db_filter[$col] = $val;
}
}
}
if ($query)
{
if ($op != 'AND')
{
$db_filter[] = '('.$this->db->column_data_implode(' '.$op.' ',$query).')';
}
else
{
$db_filter = array_merge($db_filter,$query);
}
}
$query = $db_filter;
}
if ((int) $this->debug >= 4)
{
echo "<p>so_sql::search(,only_keys=$only_keys,order_by='$order_by',wildcard='$wildcard',empty=$empty,$op,start='$start',".print_r($filter,true).") query=".print_r($query,true).", total='$this->total'</p>\n";
echo "<br>criteria = "; _debug_array($criteria);
}
if ($only_keys === true)
{
$colums = implode(',',array_keys($this->db_key_cols));
if (!empty($colums)) $colums = ' DISTINCT '.$colums;
}
elseif (is_array($only_keys))
{
$colums = array();
foreach($only_keys as $key => $col)
{
$colums[] = ($db_col = array_search($col,$this->db_cols)) ? $db_col : $col;
}
$colums = implode(',',$colums);
if (!empty($colums)) $colums = ' DISTINCT '.$colums;
}
elseif (!$only_keys)
{
$colums = '*';
}
else
{
$colums = $only_keys;
}
if ($extra_cols) $colums .= ($colums ? ',' : '').(is_array($extra_cols) ? implode(',',$extra_cols) : $extra_cols);
// add table-name to otherwise ambiguous id over which we join (incl. "AS id" to return it with the right name)
if ($join && $this->autoinc_id && strpos($colums,$this->autoinc_id) !== false)
{
$colums = preg_replace('/(?<! AS)([ ,]+)'.preg_quote($this->autoinc_id).'([ ,]+)/','\\1'.$this->table_name.'.'.$this->autoinc_id.' AS '.$this->autoinc_id.'\\2',$colums);
}
$num_rows = 0; // as spec. in max_matches in the user-prefs
if (is_array($start)) list($start,$num_rows) = $start;
if ($order_by && stripos($order_by,'ORDER BY')===false && stripos($order_by,'GROUP BY')===false)
{
$order_by = 'ORDER BY '.$order_by;
}
static $union = array();
static $union_cols = array();
if ($start === 'UNION' || $union)
{
if ($start === 'UNION')
{
$union[] = array(
'table' => $this->table_name,
'cols' => $colums,
'where' => $query,
'append' => $order_by,
'join' => $join,
);
if (!$union_cols) // union used the colum-names of the first query
{
$union_cols = $this->_get_columns($only_keys,$extra_cols);
}
return true; // waiting for further calls, before running the union-query
}
// running the union query now
if ($start !== false) // need to get the total too, saved in $this->total
{
if ($this->db->Type == 'mysql' && $this->db->ServerInfo['version'] >= 4.0)
{
$union[0]['cols'] = ($mysql_calc_rows = 'SQL_CALC_FOUND_ROWS ').$union[0]['cols'];
}
else // cant do a count, have to run the query without limit
{
$this->total = $this->db->union($union,__LINE__,__FILE__)->NumRows();
}
}
$rs = $this->db->union($union,__LINE__,__FILE__,$order_by,$start,$num_rows);
$cols = $union_cols;
$union = $union_cols = array();
}
else // no UNION
{
if ($start !== false) // need to get the total too, saved in $this->total
{
if ($this->db->Type == 'mysql' && $this->db->ServerInfo['version'] >= 4.0)
{
$mysql_calc_rows = 'SQL_CALC_FOUND_ROWS ';
}
elseif (!$need_full_no_count && (!$join || stripos($join,'LEFT JOIN')!==false))
{
$this->total = $this->db->select($this->table_name,'COUNT(*)',$query,__LINE__,__FILE__,false,'',$this->app,0,$join)->fetchColumn();
}
else // cant do a count, have to run the query without limit
{
$this->total = $this->db->select($this->table_name,$colums,$query,__LINE__,__FILE__,false,$order_by,false,0,$join)->NumRows();
}
}
$rs = $this->db->select($this->table_name,$mysql_calc_rows.$colums,$query,__LINE__,__FILE__,
$start,$order_by,$this->app,$num_rows,$join);
$cols = $this->_get_columns($only_keys,$extra_cols);
}
if ((int) $this->debug >= 4) echo "<p>sql='{$this->db->Query_ID->sql}'</p>\n";
if ($mysql_calc_rows)
{
$this->total = $this->db->query('SELECT FOUND_ROWS()')->fetchColumn();
}
// ToDo: Implement that as an iterator, as $rs is also an interator and we could return one instead of an array
if ($this->search_return_iterator)
{
return new so_sql_db2data_iterator($this,$rs);
}
$arr = array();
$n = 0;
if ($rs) foreach($rs as $row)
{
$data = array();
foreach($cols as $db_col => $col)
{
$data[$col] = (isset($row[$db_col]) ? $row[$db_col] : $row[$col]);
}
$arr[] = $this->db2data($data);
$n++;
}
return $n ? $arr : null;
}
/**
* Return criteria array for a given search pattern
*
* @param string $pattern search pattern incl. * or ? as wildcard, if no wildcards used we append and prepend one!
* @param string &$wildcard='' on return wildcard char to use, if pattern does not already contain wildcards!
* @param string &$op='AND' on return boolean operation to use, if pattern does not start with ! we use OR else AND
* @param string $extra_col=null extra column to search
* @param array $search_cols=array() List of columns to search. If not provided, all columns in $this->db_cols will be considered
* @return array or column => value pairs
*/
public function search2criteria($pattern,&$wildcard='',&$op='AND',$extra_col=null, $search_cols = array())
{
// This function can get called multiple times. Make sure it doesn't re-process.
if (empty($pattern) || is_array($pattern)) return $pattern;
if(strpos($pattern, 'CAST(COALESCE(') !== false)
{
return $pattern;
}
$pattern = trim($pattern);
$criteria = array();
$filter = array();
$columns = array();
/*
* Special handling for numeric columns. They are only considered if the pattern is numeric.
* If the pattern is numeric, an equality search is used instead.
*/
$numeric_types = array('auto', 'int', 'float', 'double', 'decimal');
$numeric_columns = array();
if(!$search_cols)
{
$search_cols = $this->get_default_search_columns();
}
if(!$search_cols)
{
return array();
}
// Concat all fields to be searched together, so the conditions operate across the whole record
foreach($search_cols as $col)
{
$col_name = $col;
$table = $this->table_name;
if (strpos($col,'.') !== false)
{
list($table,$col_name) = explode('.',$col);
}
$table_def = $table == $this->table_name ? $this->table_def : $this->db->get_table_definitions(true,$table);
if ($table_def['fd'][$col_name] && in_array($table_def['fd'][$col_name]['type'], $numeric_types))
{
$numeric_columns[] = $col;
continue;
}
$columns[] = sprintf($this->db->capabilities[egw_db::CAPABILITY_CAST_AS_VARCHAR],"COALESCE($col,'')");
}
if($columns)
{
$columns = call_user_func_array(array($GLOBALS['egw']->db,'concat'),$columns);
}
// Break the search string into tokens
$break = ' ';
$token = strtok($pattern, $break);
while($token)
{
if($token == strtoupper(lang('AND')) || $token == 'AND')
{
$token = '+'.strtok($break);
}
elseif ($token == strtoupper(lang('OR')) || $token == 'OR')
{
$token = strtok($break);
continue;
}
elseif ($token == strtoupper(lang('NOT')) || $token == 'NOT')
{
$token = '-'.strtok($break);
}
if ($token[0]=='"')
{
$token = substr($token, 1,strlen($token));
if(substr($token, -1) != '"')
{
$token .= ' '.strtok('"');
}
else
{
$token = substr($token, 0, -1);
}
}
// prepend and append extra wildcard %, if pattern does NOT already contain wildcards
if (strpos($token,'*') === false && strpos($token,'?') === false)
{
$wildcard = '%'; // if pattern contains no wildcards, add them before AND after the pattern
}
else
{
$wildcard = ''; // no extra wildcard, if pattern already contains some
}
switch($token[0])
{
case '+':
$op = 'AND';
$token = substr($token, 1, strlen($token));
break;
case '-':
case '!':
$op = 'NOT';
$token = substr($token, 1, strlen($token));
break;
default:
$op = 'OR';
break;
}
$token_filter = " $columns " . $this->db->capabilities['case_insensitive_like'] . ' ' .
$GLOBALS['egw']->db->quote($wildcard.str_replace(array('%','_','*','?'),array('\\%','\\_','%','_'),$token).$wildcard);
// Compare numeric token as equality for numeric columns
if(is_numeric(str_replace(array('%','_','*','?'), '', $token)))
{
$numeric_filter = array();
foreach($numeric_columns as $col)
{
if($wildcard == '')
{
// Token has a wildcard from user, use LIKE
$numeric_filter[] = "($col IS NOT NULL AND CAST($col AS CHAR) " .
$this->db->capabilities['case_insensitive_like'] . ' ' .
$GLOBALS['egw']->db->quote(str_replace(array('%','_','*','?'),array('\\%','\\_','%','_'),$token)) . ')';
}
else
{
$numeric_filter[] = "($col IS NOT NULL AND $col = $token)";
}
}
if(count($numeric_filter) > 0)
{
$token_filter = '(' . $token_filter . ' OR ' . implode(' OR ', $numeric_filter) . ')';
}
}
$criteria[$op][] = $token_filter;
$token = strtok($break);
}
if($criteria['NOT'])
{
$filter[] = 'NOT (' . implode(' OR ', $criteria['NOT']) . ') ';
}
if($criteria['AND'])
{
$filter[] = implode(' AND ', $criteria['AND']) . ' ';
}
if($criteria['OR'])
{
$filter[] = '(' . implode(' OR ', $criteria['OR']) . ') ';
}
if(count($filter))
{
$result = '(' . implode(' AND ', $filter) . ')';
}
// OR extra column on the end so a null or blank won't block a hit in the main columns
if ($extra_col)
{
$result .= (strlen($result) ? ' OR ' : ' ') . "$extra_col = " . $GLOBALS['egw']->db->quote($pattern);
}
$op = 'OR';
return array('(' . $result . ')');
}
/**
* Get a default list of columns to search
* This is to be used as a fallback, for when the extending class does not define
* $this->columns_to_search. All the columns are considered, and any with $skip_columns_with in
* their name are discarded because these columns are expected to be foreign keys or other numeric
* values with no meaning to the user.
*
* @return array of column names
*/
protected function get_default_search_columns()
{
$skip_columns_with = array('_id', 'modified', 'modifier', 'status', 'cat_id', 'owner');
$search_cols = is_null($this->columns_to_search) ? $this->db_cols : $this->columns_to_search;
$numeric_types = array('auto', 'int', 'float', 'double');
// Skip some numeric columns that don't make sense to search if we have to default to all columns
if(is_null($this->columns_to_search))
{
foreach($search_cols as $key => &$col)
{
// If the name as given isn't a real column name, and adding the prefix doesn't help, skip it
if(!$this->table_def['fd'][$col] && !($col = $this->prefix.array_search($col, $search_cols))) {
// Can't search this column
unset($search_cols[$key]);
continue;
}
if(in_array($this->table_def['fd'][$col]['type'], $numeric_types))
{
foreach($skip_columns_with as $bad)
{
if(strpos($col, $bad) !== false)
{
unset($search_cols[$key]);
continue 2;
}
}
}
// Prefix with table name to avoid ambiguity
$col = $this->table_name.'.'.$col;
}
}
return $search_cols;
}
/**
* extract the requested columns from $only_keys and $extra_cols param of a search
*
* @internal
* @param boolean|string $only_keys=true True returns only keys, False returns all cols. comma seperated list of keys to return
* @param string|array $extra_cols='' string or array of strings to be added to the SELECT, eg. "count(*) as num"
* @return array with columns as db-name => internal-name pairs
*/
function _get_columns($only_keys,$extra_cols)
{
//echo "_get_columns() only_keys="; _debug_array($only_keys); echo "extra_cols="; _debug_array($extra_cols);
if ($only_keys === true) // only primary key
{
$cols = $this->db_key_cols;
}
else
{
$cols = array();
foreach(is_array($only_keys) ? $only_keys : explode(',',str_replace(array('DISTINCT ','distinct '),'',$only_keys)) as $col)
{
if (!$col || $col == '*' || $col == $this->table_name.'.*') // all columns
{
$cols = array_merge($cols,$this->db_cols);
}
else // only the specified columns
{
if (stripos($col,'as')) // if there's already an explicit naming of the column, just use it
{
$col = preg_replace('/^.*as +([a-z0-9_]+) *$/i','\\1',$col);
$cols[$col] = $col;
continue;
}
if (($db_col = array_search($col,$this->db_cols)) !== false)
{
$cols[$db_col] = $col;
}
else
{
$cols[$col] = isset($this->db_cols[$col]) ? $this->db_cols[$col] : $col;
}
}
}
}
if ($extra_cols) // extra columns to report
{
foreach(is_array($extra_cols) ? $extra_cols : explode(',',$extra_cols) as $col)
{
if (stripos($col,'as ')!==false) $col = preg_replace('/^.*as +([a-z0-9_]+) *$/i','\\1',$col);
if (($db_col = array_search($col,$this->db_cols)) !== false)
{
$cols[$db_col] = $col;
}
else
{
$cols[$col] = isset($this->db_cols[$col]) ? $this->db_cols[$col] : $col;
}
}
}
return $cols;
}
/**
* query rows for the nextmatch widget
*
* @param array $query with keys 'start', 'search', 'order', 'sort', 'col_filter'
* For other keys like 'filter', 'cat_id' you have to reimplement this method in a derived class.
* @param array &$rows returned rows/competitions
* @param array &$readonlys eg. to disable buttons based on acl, not use here, maybe in a derived class
* @param string $join='' sql to do a join, added as is after the table-name, eg. ", table2 WHERE x=y" or
* "LEFT JOIN table2 ON (x=y)", Note: there's no quoting done on $join!
* @param boolean $need_full_no_count=false If true an unlimited query is run to determine the total number of rows, default false
* @param mixed $only_keys=false, see search
* @param string|array $extra_cols=array()
* @return int total number of rows
*/
function get_rows($query,&$rows,&$readonlys,$join='',$need_full_no_count=false,$only_keys=false,$extra_cols=array())
{
if ((int) $this->debug >= 4)
{
echo "<p>so_sql::get_rows(".print_r($query,true).",,)</p>\n";
}
$criteria = array();
$op = 'AND';
if ($query['search'])
{
$criteria = $query['search'];
}
$rows = $this->search($criteria,$only_keys,$query['order']?$query['order'].' '.$query['sort']:'',$extra_cols,
'',false,$op,$query['num_rows']?array((int)$query['start'],$query['num_rows']):(int)$query['start'],
$query['col_filter'],$join,$need_full_no_count);
if (!$rows) $rows = array(); // otherwise false returned from search would be returned as array(false)
return $this->total;
}
/**
* Check if values for unique keys and the primary keys are unique are unique
*
* @param array $data=null data-set to check, defaults to $this->data
* @return int 0: all keys are unique, 1: first key not unique, 2: ...
*/
function not_unique($data=null)
{
if (!is_array($data))
{
$data = $this->data;
}
$n = 1;
$uni_keys = $this->db_uni_cols;
// add the primary key, only if it's NOT an auto id
if (!$this->autoinc_id)
{
$uni_keys[] = $this->db_key_cols;
}
foreach($uni_keys as $db_col => $col)
{
if (is_array($col))
{
$query = array();
foreach($col as $db_c => $c)
{
$query[$db_c] = $data[$c];
}
}
else
{
$query = array($db_col => $data[$col]);
}
foreach($this->db->select($this->table_name,$this->db_key_cols,$query,__LINE__,__FILE__,false,'',$this->app) as $other)
{
foreach($this->db_key_cols as $db_key_col => $key_col)
{
if ($data[$key_col] != $other[$key_col])
{
if ((int) $this->debug >= 4)
{
echo "<p>not_unique in ".array2string($col)." as for '$key_col': '${data[$key_col]}' != '${other[$key_col]}'</p>\n";
}
return $n; // different entry => $n not unique
}
}
}
++$n;
}
return 0;
}
/**
* Query DB for a list / array with one colum as key and an other one(s) as value, eg. id => title pairs
*
* We do some caching as these kind of function is usualy called multiple times, eg. for option-lists.
*
* @param string $value_col array of column-names for the values of the array, can also be an expression aliased with AS,
* if more then one column given, an array with keys identical to the given ones is returned and not just the value of the column
* @param string $key_col='' column-name for the keys, default '' = same as (first) $value_col: returns a distinct list
* @param array $filter=array() to filter the entries
* @param string $order='' order, default '' = same as (first) $value_col
* @return array with key_col => value_col pairs or array if more then one value_col given (keys as in value_col)
*/
function query_list($value_col,$key_col='',$filter=array(),$order='')
{
static $cache = array();
$cache_key = serialize($value_col).'-'.$key_col.'-'.serialize($filter).'-'.$order;
if (isset($cache[$cache_key]))
{
return $cache[$cache_key];
}
if (!is_array($value_col)) $value_col = array($value_col);
$cols = array();
foreach($value_col as $key => $col)
{
$cols[$key] = preg_match('/AS ([a-z_0-9]+)$/i',$col,$matches) ? $matches[1] : $col;
}
if (!$order) $order = current($cols);
if (($search =& $this->search(array(),($key_col ? $key_col.',' : 'DISTINCT ').implode(',',$value_col),$order,'','',false,'AND',false,$filter)))
{
if (preg_match('/AS ([a-z_0-9]+)$/i',$key_col,$matches))
{
$key_col = $matches[1];
}
elseif (!$key_col)
{
$key_col = current($cols);
}
foreach($search as $row)
{
if (count($cols) > 1)
{
$data = array();
foreach($cols as $key => $col)
{
$data[$key] = $row[$col];
}
}
else
{
$data = $row[current($cols)];
}
$ret[$row[$key_col]] = $data;
}
}
return $cache[$cache_key] =& $ret;
}
/**
* Get comments for all columns or a specific one
*
* @param $column=null name of column or null for all (default)
* @return array|string array with internal-name => comment pairs, or string with comment, if $column given
*/
public function get_comments($column=null)
{
static $comments;
if (is_null($comments))
{
foreach($this->db_cols as $db_col => $col)
{
$comments[$col] = $this->table_def['fd'][$db_col]['comment'];
}
}
return is_null($column) ? $comments : $comments[$column];
}
}
/**
* Iterator applying a so_sql's db2data method on each element retrived
*
*/
class so_sql_db2data_iterator implements Iterator
{
/**
* Reference of so_sql class to use it's db2data method
*
* @var so_sql
*/
private $so_sql;
/**
* Instance of ADOdb record set to iterate
*
* @var Iterator
*/
private $rs;
/**
* Total count of entries
*
* @var int
*/
public $total;
/**
* Constructor
*
* @param so_sql $so_sql
* @param Traversable $rs
*/
public function __construct(so_sql $so_sql,Traversable $rs=null)
{
$this->so_sql = $so_sql;
$this->total = $so_sql->total;
if (is_a($rs,'IteratorAggregate'))
{
$this->rs = $rs->getIterator();
}
else
{
$this->rs = $rs;
}
}
/**
* Return the current element
*
* @return array
*/
public function current()
{
if (is_a($this->rs,'iterator'))
{
$data = $this->rs->current();
return $this->so_sql->data2db($data);
}
return null;
}
/**
* Return the key of the current element
*
* @return int
*/
public function key()
{
if (is_a($this->rs,'iterator'))
{
return $this->rs->key();
}
return 0;
}
/**
* Move forward to next element (called after each foreach loop)
*/
public function next()
{
if (is_a($this->rs,'iterator'))
{
return $this->rs->next();
}
}
/**
* Rewind the Iterator to the first element (called at beginning of foreach loop)
*/
public function rewind()
{
if (is_a($this->rs,'iterator'))
{
return $this->rs->rewind();
}
}
/**
* Checks if current position is valid
*
* @return boolean
*/
public function valid ()
{
if (is_a($this->rs,'iterator'))
{
return $this->rs->valid();
}
return false;
}
}