mirror of
https://github.com/EGroupware/egroupware.git
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445 lines
16 KiB
PHP
445 lines
16 KiB
PHP
<?php
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/**
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* eGroupWare generalized SQL Storage Object with build in custom field support
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @link http://www.egroupware.org
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* @author Ralf Becker <RalfBecker@outdoor-training.de>
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* @copyright 2009 by RalfBecker@outdoor-training.de
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* @version $Id$
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*/
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/**
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* Generalized SQL Storage Object with build in custom field support
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*
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* This class allows to display, search, order and filter by custom fields simply by replacing so_sql
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* by it and adding custom field widgets to the eTemplates of an applications.
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* It's inspired by the code from Klaus Leithoff, which does the same thing limited to addressbook.
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*
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* The schema of the custom fields table should be like (the lenght of the cf name is nowhere enfored and
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* varies throughout eGW from 40-255, the value column from varchar(255) to longtext!):
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*
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* 'egw_app_extra' => array(
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* 'fd' => array(
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* 'prefix_id' => array('type' => 'int','precision' => '4','nullable' => False),
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* 'prefix_name' => array('type' => 'string','precision' => '64','nullable' => False),
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* 'prefix_value' => array('type' => 'text'),
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* ),
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* 'pk' => array('prefix_id','prefix_name'),
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* 'fk' => array(),
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* 'ix' => array(),
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* 'uc' => array()
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* )
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*
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* @package etemplate
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* @subpackage api
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* @author RalfBecker-AT-outdoor-training.de
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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*/
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class so_sql_cf extends so_sql
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{
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const CF_PREFIX = '#';
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/**
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* name of customefields table
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*
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* @var string
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*/
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var $extra_table;
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/**
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* name of id column, defaults to the regular tables auto id
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*
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* @var string
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*/
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var $extra_id = '_id';
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/**
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* Name of key (cf name) column or just a postfix added to the table prefix
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*
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* @var string
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*/
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var $extra_key = '_name';
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/**
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* Name of value column or just a postfix added to the table prefix
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*
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* @var string
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*/
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var $extra_value = '_value';
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var $extra_join;
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var $extra_join_order;
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var $extra_join_filter;
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/**
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* Custom fields of $app, read by the constructor
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*
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* @var array
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*/
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var $customfields;
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/**
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* constructor of the class
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*
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* Please note the different params compared to so_sql!
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*
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* @param string $app application name to load table schemas
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* @param string $table name of the table to use
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* @param string $extra_table name of the custom field table
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* @param string $colum_prefix='' column prefix to automatic remove from the column-name, if the column name starts with it
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* @param string $extra_key='_name' column name for cf name column (will be prefixed with colum prefix, if starting with _)
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* @param string $extra_value='_value' column name for cf value column (will be prefixed with colum prefix, if starting with _)
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* @param string $extra_id='_id' column name for cf id column (will be prefixed with colum prefix, if starting with _)
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* @param egw_db $db=null database object, if not the one in $GLOBALS['egw']->db should be used, eg. for an other database
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* @param boolean $no_clone=true can we avoid to clone the db-object, default yes (different from so_sql!)
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* new code using appnames and foreach(select(...,$app) can set it to avoid an extra instance of the db object
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*/
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function __construct($app,$table,$extra_table,$column_prefix='',
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$extra_key='_name',$extra_value='_value',$extra_id='_id',
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$db=null,$no_clone=true)
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{
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// calling the so_sql constructor
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parent::__construct($app,$table,$db,$column_prefix,$no_clone);
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$this->extra_table = $extra_table;
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if (!$this->extra_id) $this->extra_id = $this->autoinc_id; // default to auto id of regular table
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// if names from columns of extra table are only postfixes (starting with _), prepend column prefix
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if (!($prefix=$column_prefix))
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{
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list($prefix) = explode('_',$this->autoinc_id);
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}
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elseif(substr($prefix,-1) == '_')
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{
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$prefix = substr($prefix,0,-1); // remove trailing underscore from column prefix parameter
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}
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foreach(array('extra_id','extra_key','extra_value') as $col)
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{
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$this->$col = $col_name = $$col;
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if ($col_name[0] == '_') $this->$col = $prefix . $$col;
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}
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// some sanity checks, maybe they should be active only for development
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if (!($extra_defs = $this->db->get_table_definitions($app,$extra_table)))
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{
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throw new egw_exception_wrong_parameter("extra table $extra_table is NOT defined!");
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}
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foreach(array('extra_id','extra_key','extra_value') as $col)
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{
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if (!$this->$col || !isset($extra_defs['fd'][$this->$col]))
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{
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throw new egw_exception_wrong_parameter("$col column $extra_table.{$this->$col} is NOT defined!");
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}
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}
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// setting up our extra joins, now we know table and column names
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$this->extra_join = " LEFT JOIN $extra_table ON $table.$this->autoinc_id=$extra_table.$this->extra_id";
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$this->extra_join_order = " LEFT JOIN $extra_table extra_order ON $table.$this->autoinc_id=extra_order.$this->extra_id";
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$this->extra_join_filter = " JOIN $extra_table extra_filter ON $table.$this->autoinc_id=extra_filter.$this->extra_id";
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$this->customfields = config::get_customfields($app);
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}
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/**
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* Read all customfields of the given id's
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*
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* @param int|array $ids one ore more id's
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* @param array $field_names=null custom fields to read, default all
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* @return array id => self::CF_PREFIX.name => value
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*/
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function read_customfields($ids,$field_names=null)
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{
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if (is_null($field_names)) $field_names = array_keys($this->customfields);
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foreach((array)$ids as $key => $id)
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{
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if (!(int)$id && is_array($ids)) unset($ids[$key]);
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}
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if (!$ids || !$field_names) return array(); // nothing to do
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$fields = array();
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foreach($this->db->select($this->extra_table,'*',array(
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$this->extra_id => $ids,
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$this->extra_key => $field_names,
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),__LINE__,__FILE__,false,'',$this->app) as $row)
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{
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$fields[$row[$this->extra_id]][self::CF_PREFIX.$row[$this->extra_key]] = $row[$this->extra_value];
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}
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return $fields;
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}
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/**
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* saves custom field data
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*
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* @param array $data data to save (cf's have to be prefixed with self::CF_PREFIX = #)
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* @return bool false on success, errornumber on failure
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*/
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function save_customfields($data)
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{
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foreach ((array)$this->customfields as $field => $options)
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{
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if (!isset($data[self::CF_PREFIX.$field])) continue;
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$where = array(
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$this->extra_id => $data[$this->autoinc_id],
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$this->extra_key => $field,
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);
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if((string) $data[self::CF_PREFIX.$field] === '') // dont write empty values
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{
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$this->db->delete($this->extra_table,$where,__LINE__,__FILE__,$this->app); // just delete them, in case they were previously set
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continue;
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}
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if (!$this->db->insert($this->extra_table,array($this->extra_value => $data[self::CF_PREFIX.$field]),$where,__LINE__,__FILE__,$this->app))
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{
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return $this->db->Errno;
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}
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}
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return false; // no error
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}
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/**
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* merges in new values from the given new data-array
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*
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* reimplemented to also merge the customfields
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*
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* @param $new array in form col => new_value with values to set
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*/
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function data_merge($new)
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{
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parent::data_merge($new);
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if ($this->customfields)
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{
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foreach($this->customfields as $name => $data)
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{
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if (isset($new[self::CF_PREFIX.$name]))
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{
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$this->data[self::CF_PREFIX.$name] = $new[self::CF_PREFIX.$name];
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}
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}
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}
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}
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/**
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* reads row matched by key and puts all cols in the data array
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*
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* reimplented to also read the custom fields
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*
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* @param array $keys array with keys in form internalName => value, may be a scalar value if only one key
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* @param string|array $extra_cols string or array of strings to be added to the SELECT, eg. "count(*) as num"
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* @param string $join sql to do a join, added as is after the table-name, eg. ", table2 WHERE x=y" or
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* @return array|boolean data if row could be retrived else False
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*/
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function read($keys,$extra_cols='',$join='')
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{
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if (!parent::read($keys,$extra_cols,$join))
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{
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return false;
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}
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if (($id = (int)$this->data[$this->autoinc_id]) && $this->customfields &&
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($cfs = $this->read_customfields($id)))
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{
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$this->data = array_merge($this->data,$cfs[$id]);
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}
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return $this->data;
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}
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/**
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* saves the content of data to the db
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*
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* reimplented to also save the custom fields
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*
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* @param array $keys if given $keys are copied to data before saveing => allows a save as
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* @param string|array $extra_where=null extra where clause, eg. to check an etag, returns true if no affected rows!
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* @return int|boolean 0 on success, or errno != 0 on error, or true if $extra_where is given and no rows affected
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*/
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function save($keys=null,$extra_where=null)
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{
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if (is_array($keys) && count($keys)) $this->data_merge($keys);
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$ret = parent::save(null,$extra_where);
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if ($ret == 0 && $this->customfields)
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{
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$this->save_customfields($this->data);
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}
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return $ret;
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}
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/**
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* deletes row representing keys in internal data or the supplied $keys if != null
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*
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* reimplented to also delete the custom fields
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*
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* @param array $keys if given array with col => value pairs to characterise the rows to delete
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* @return int affected rows, should be 1 if ok, 0 if an error
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*/
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function delete($keys=null)
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{
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if ($this->customfields)
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{
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$query = parent::delete($keys,true);
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// check if query contains more then the id's
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if (!isset($query[$this->autoinc_id]) || count($query) != 1)
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{
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foreach($this->db->select($this->table_name,$this->autoinc_id,$query,__LINE__,__FILE__,false,'',$this->app) as $row)
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{
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$ids[] = $row[$this->autoinc_id];
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}
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if (!$ids) return 0; // no rows affected
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}
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else
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{
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$ids = $query[$this->autoinc_id];
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}
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$this->db->delete($this->extra_table,array($this->extra_id => $ids),__LINE__,__FILE__);
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}
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return parent::delete($keys);
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}
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/**
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* query rows for the nextmatch widget
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*
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* Reimplemented to also read the custom fields (if enabled via $query['selectcols']).
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*
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* Please note: the name of the nextmatch-customfields has to be 'customfields'!
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*
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* @param array $query with keys 'start', 'search', 'order', 'sort', 'col_filter'
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* For other keys like 'filter', 'cat_id' you have to reimplement this method in a derived class.
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* @param array &$rows returned rows/competitions
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* @param array &$readonlys eg. to disable buttons based on acl, not use here, maybe in a derived class
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* @param string $join='' sql to do a join, added as is after the table-name, eg. ", table2 WHERE x=y" or
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* "LEFT JOIN table2 ON (x=y)", Note: there's no quoting done on $join!
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* @param boolean $need_full_no_count=false If true an unlimited query is run to determine the total number of rows, default false
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* @param mixed $only_keys=false, see search
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* @return int total number of rows
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*/
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function get_rows($query,&$rows,&$readonlys,$join='',$need_full_no_count=false,$only_keys=false)
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{
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$criteria = array();
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if ($query['search'])
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{
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foreach($this->db_cols as $col) // we search all cols
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{
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$criteria[$col] = $query['search'];
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}
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$criteria[$this->extra_value] = $query['search'];
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}
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$rows = $this->search($criteria,$only_keys,$query['order']?$query['order'].' '.$query['sort']:'',
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'','%',false,'OR',$query['num_rows']?array((int)$query['start'],$query['num_rows']):(int)$query['start'],
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$query['col_filter'],$join,$need_full_no_count);
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if (!$rows) $rows = array(); // otherwise false returned from search would be returned as array(false)
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$selectcols = $query['selectcols'] ? explode(',',$query['selectcols']) : array();
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if ($rows && $this->customfields && (!$selectcols || in_array('customfields',$selectcols)))
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{
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$id2keys = array();
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foreach($rows as $key => $row)
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{
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$id2keys[$row[$this->autoinc_id]] = $key;
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}
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// check if only certain cf's to show
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foreach($selectcols as $col)
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{
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if ($col[0] == self::CF_PREFIX) $fields[] = substr($col,1);
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}
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if (($cfs = $this->read_customfields(array_keys($id2keys),$fields)))
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{
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foreach($cfs as $id => $data)
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{
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$rows[$id2keys[$id]] = array_merge($rows[$id2keys[$id]],$data);
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}
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}
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}
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return $this->total;
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}
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/**
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* searches db for rows matching searchcriteria
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*
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* Reimplemented to search, order and filter by custom fields
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*
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* @param array/string $criteria array of key and data cols, OR a SQL query (content for WHERE), fully quoted (!)
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* @param boolean/string/array $only_keys=true True returns only keys, False returns all cols. or
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* comma seperated list or array of columns to return
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* @param string $order_by='' fieldnames + {ASC|DESC} separated by colons ',', can also contain a GROUP BY (if it contains ORDER BY)
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* @param string/array $extra_cols='' string or array of strings to be added to the SELECT, eg. "count(*) as num"
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* @param string $wildcard='' appended befor and after each criteria
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* @param boolean $empty=false False=empty criteria are ignored in query, True=empty have to be empty in row
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* @param string $op='AND' defaults to 'AND', can be set to 'OR' too, then criteria's are OR'ed together
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* @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
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* @param array $filter=null if set (!=null) col-data pairs, to be and-ed (!) into the query without wildcards
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* @param string $join='' sql to do a join, added as is after the table-name, eg. "JOIN table2 ON x=y" or
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* "LEFT JOIN table2 ON (x=y AND z=o)", Note: there's no quoting done on $join, you are responsible for it!!!
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* @param boolean $need_full_no_count=false If true an unlimited query is run to determine the total number of rows, default false
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* @return boolean/array of matching rows (the row is an array of the cols) or False
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*/
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function &search($criteria,$only_keys=True,$order_by='',$extra_cols='',$wildcard='',$empty=False,$op='AND',$start=false,$filter=null,$join='',$need_full_no_count=false)
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{
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// check if we search in the custom fields
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if ($criteria && is_array($criteria) && isset($criteria[$this->extra_value]))
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{
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$criteria[] = $this->extra_table.'.'.$this->extra_value . ' ' .
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$this->db->capabilities[egw_db::CAPABILITY_CASE_INSENSITIV_LIKE]. ' ' .
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$this->db->quote('%'.$criteria[$this->extra_value].'%');
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unset($criteria[$this->extra_value]);
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$join .= $this->extra_join;
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// replace ambiguous auto-id with (an exact match of) table_name.autoid
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if (isset($criteria[$this->autoinc_id]))
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{
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if ((int)$criteria[$this->autoinc_id])
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{
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$criteria[] = $this->table_name.'.'.$this->autoinc_id.'='.(int)$criteria[$this->autoinc_id];
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}
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unset($criteria[$this->autoinc_id]);
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}
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}
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// check if we order by a custom field --> join cf table for given cf and order by it's value
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if (strpos($order_by,self::CF_PREFIX) !== false &&
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preg_match('/'.self::CF_PREFIX.'([^ ]+) (asc|desc)/i',$order_by,$matches))
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{
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$order_by = str_replace($matches[0],'extra_order.'.$this->extra_value.' IS NULL,extra_order.'.$this->extra_value.' '.$matches[2],$order_by);
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$join .= $this->extra_join_order.' AND extra_order.'.$this->extra_key.'='.$this->db->quote($matches[1]);
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}
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// check if we filter by a custom field
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foreach($filter as $name => $val)
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{
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if (is_string($name) && $name[0] == self::CF_PREFIX)
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{
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if (!empty($val)) // empty -> dont filter
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{
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$join .= str_replace('extra_filter','extra_filter'.$extra_filter,$this->extra_join_filter.
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' AND extra_filter.'.$this->extra_key.'='.$this->db->quote(substr($name,1)).
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' AND extra_filter.'.$this->extra_value.'='.$this->db->quote($val));
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++$extra_filter;
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}
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unset($filter[$name]);
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}
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elseif(is_int($name) && $val[0] == self::CF_PREFIX) // lettersearch: #cfname LIKE 's%'
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{
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list($cf) = explode(' ',$val);
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$join .= str_replace('extra_filter','extra_filter'.$extra_filter,$this->extra_join_filter.
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' AND extra_filter.'.$this->extra_key.'='.$this->db->quote(substr($cf,1)).
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' AND '.str_replace($cf,'extra_filter.'.$this->extra_value,$val));
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++$extra_filter;
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unset($filter[$name]);
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}
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}
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return parent::search($criteria,$only_keys,$order_by,$extra_cols,$wildcard,$empty,$op,$start,$filter,$join,$need_full_no_count);
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}
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/**
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* Prevent someone calling the old php4 so_sql constructor
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*/
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function so_sql()
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{
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throw new egw_exception_assertion_failed('use __construct()!');
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}
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}
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