forked from extern/egroupware
fa95917fba
- fixed the counting of not-left joins (we cant ignore them, nor can we use count(*), we make an unlimited query now and retrive the number of rows with num_rows())
615 lines
18 KiB
PHP
615 lines
18 KiB
PHP
<?php
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/**************************************************************************\
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* eGroupWare - generalized SQL Storage Object *
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* http://www.egroupware.org *
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* Written by Ralf Becker <RalfBecker@outdoor-training.de> *
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* -------------------------------------------- *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU General Public License as published by the *
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* Free Software Foundation; either version 2 of the License, or (at your *
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* option) any later version. *
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\**************************************************************************/
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/* $Id$ */
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/**
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* generalized SQL Storage Object
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*
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* the class can be used in following ways:
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* 1) by calling the constructor with an app and table-name or
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* 2) by setting the following documented class-vars in a class derifed from this one
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* Of cause can you derife the class and call the constructor with params.
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*
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* @package etemplate
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* @subpackage contrib
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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
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{
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/**
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* @var string $table_name need to be set in the derived class to the db-table-name
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*/
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var $table_name;
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/**
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* @var string $autoinc_id db-col-name of autoincrement id or ''
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*/
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var $autoinc_id = '';
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/**
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* @var array $non_db_cols all cols in data which are not (direct)in the db, for data_merge
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*/
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var $non_db_cols = array();
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/**
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* @var int $debug turns on debug-messages
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*/
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var $debug = 0;
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/**
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* @var string $empty_on_write string to be written to db if a col-value is '', eg. "''" or 'NULL' (default)
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*/
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var $empty_on_write = 'NULL';
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/**
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* @var int/boolean $total total number of entries of last search with start != false
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*/
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var $total = false;
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/**
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* @var db-object $db privat instance of the db-object
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*/
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var $db;
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/**
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* @var array $db_uni_cols unique keys/index, set by derived class or via so_sql($app,$table)
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*/
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var $db_uni_cols = array();
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/**
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* @var array $db_key_cols db-col-name / internal-name pairs, set by derived calls or via so_sql($app,$table)
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*/
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var $db_key_cols = array();
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/**
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* @var array $db_data_cols db-col-name / internal-name pairs, set by derived calls or via so_sql($app,$table)
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*/
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var $db_data_cols = array();
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/**
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* @var array $db_cols all columns = $db_key_cols + $db_data_cols, set in the constructor
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*/
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var $db_cols = array();
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/**
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* @var array $data holds the content of all columns
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*/
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var $data = array();
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/**
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* @deprecated a SO class dont need to and should NOT export functions (make them callable via menuaction)
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* @var array $public_functions
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*/
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var $public_functions = array();
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/**
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* constructor of the class
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*
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* NEED to be called from the constructor of the derived class !!!
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*
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* @param string $app should be set if table-defs to be read from <app>/setup/tables_current.inc.php
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* @param string $table should be set if table-defs to be read from <app>/setup/tables_current.inc.php
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* @param object/db $db database object, if not the one in $GLOBALS['egw']->db should be used, eg. for an other database
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*/
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function so_sql($app='',$table='',$db=null)
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{
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$this->db = is_object($db) ? clone($db) : clone($GLOBALS['egw']->db);
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$this->db_cols = $this->db_key_cols + $this->db_data_cols;
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if ($app)
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{
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$this->db->set_app($app);
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if ($table) $this->setup_table($app,$table);
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}
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$this->init();
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if ($this->debug)
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{
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echo "<p>so_sql('$app','$table')</p>\n";
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_debug_array($this);
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}
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}
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/**
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* sets up the class for an app and table (by using the table-definition of $app/setup/tables_current.inc.php
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*
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* Does NOT set a different internal-data-name. If you want this, you have to do so in a derifed class !!!
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*/
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function setup_table($app,$table)
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{
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$this->table_name = $table;
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$table_def = $this->db->get_table_definitions($app,$table);
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if (!$table_def || !is_array($table_def['fd']))
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{
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echo "<p>so_sql::setup_table('$app','$table'): No table definitions found !!!<br>\n".function_backtrace()."</p>\n";
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}
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$this->db_key_cols = $this->db_data_cols = $this->db_cols = array();
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$this->autoinc_id = '';
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foreach($table_def['fd'] as $name => $def)
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{
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if (in_array($name,$table_def['pk']))
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{
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$this->db_key_cols[$name] = $name;
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}
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else
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{
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$this->db_data_cols[$name] = $name;
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}
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$this->db_cols[$name] = $name;
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if ($def['type'] == 'auto')
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{
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$this->autoinc_id = $name;
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}
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if (in_array($name,$table_def['uc']))
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{
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$this->db_uni_cols[$name] = $name;
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}
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}
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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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* @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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if ($this->debug) echo "<p>so_sql::data_merge(".print_r($new).")</p>\n";
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if (!is_array($new) || !count($new))
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{
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return;
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}
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foreach($this->db_cols as $db_col => $col)
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{
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if (isset($new[$col]))
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{
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$this->data[$col] = $new[$col];
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}
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}
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foreach($this->non_db_cols as $db_col => $col)
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{
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if (isset($new[$col]))
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{
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$this->data[$col] = $new[$col];
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}
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}
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if ($this->debug) _debug_array($this->data);
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}
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/**
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* changes the data from the db-format to your work-format
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*
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* it gets called everytime when data is read from the db
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* This function needs to be reimplemented in the derived class
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*
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* @param array $data if given works on that array and returns result, else works on internal data-array
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*/
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function db2data($data=null)
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{
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if (!is_array($data))
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{
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$data = &$this->data;
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}
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// do the necessare changes here
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return $data;
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}
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/**
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* changes the data from your work-format to the db-format
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*
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* It gets called everytime when data gets writen into db or on keys for db-searches
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* this needs to be reimplemented in the derived class
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*
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* @param array $data if given works on that array and returns result, else works on internal data-array
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*/
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function data2db($data=null)
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{
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if ($intern = !is_array($data))
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{
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$data = &$this->data;
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}
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// do the necessary changes here
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return $data;
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}
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/**
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* initializes data with the content of key
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*
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* @param array $keys array with keys in form internalName => value
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*/
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function init($keys=array())
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{
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$this->data = array();
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$this->db2data();
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$this->data_merge($keys);
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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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* @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 (!is_array($keys))
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{
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$pk = array_keys($this->db_key_cols);
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if ($pk) $keys = array($pk[0] => $keys);
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}
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$this->init($keys);
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$this->data2db();
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$query = false;
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foreach ($this->db_key_cols as $db_col => $col)
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{
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if ($this->data[$col] != '')
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{
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$query[$db_col] = $this->data[$col];
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}
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}
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if (!$query) // no primary key in keys, lets try the data_cols for a unique key
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{
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foreach($this->db_uni_cols as $db_col => $col)
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{
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if ($this->data[$col] != '')
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{
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$query[$db_col] = $this->data[$col];
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}
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}
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}
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if (!$query) // keys has no cols
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{
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$this->db2data();
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return False;
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}
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$this->db->select($this->table_name,'*'.($extra_cols?','.(is_array($extra_cols)?implode(',',$extra_cols):$extra_cols):''),
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$query,__LINE__,__FILE__,False,'',False,0,$join);
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if (!($row = $this->db->row(true)))
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{
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if ($this->autoinc_id)
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{
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unset($this->data[$this->db_key_cols[$this->autoinc_id]]);
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}
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if ($this->debug) echo "nothing found !!!</p>\n";
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$this->db2data();
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return False;
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}
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$cols = $this->db_cols;
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if ($extra_cols) // extra columns to report
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{
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foreach(is_array($extra_cols) ? $extra_cols : array($extra_cols) as $col)
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{
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if (stristr($col,'as')) $col = preg_replace('/^.*as *([a-z0-9_]+) *$/i','\\1',$col);
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$cols[$col] = $col;
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}
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}
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foreach ($cols as $db_col => $col)
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{
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$this->data[$col] = $row[$db_col];
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}
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$this->db2data();
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if ($this->debug)
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{
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echo "data =\n"; _debug_array($this->data);
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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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* @param array $keys if given $keys are copied to data before saveing => allows a save as
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* @return int 0 on success and errno != 0 else
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*/
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function save($keys=null)
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{
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if (is_array($keys) && count($keys)) $this->data_merge($keys);
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$this->data2db();
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//echo "so_sql::save(".print_r($keys,true).") autoinc_id='$this->autoinc_id', data="; _debug_array($this->data);
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if ($this->autoinc_id && !$this->data[$this->db_key_cols[$this->autoinc_id]]) // insert
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{
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foreach($this->db_cols as $db_col => $col)
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{
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if (!$this->autoinc_id || $db_col != $this->autoinc_id) // not write auto-inc-id
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{
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$data[$db_col] = (string) $this->data[$col] === '' && $this->empty_on_write == 'NULL' ? null : $this->data[$col];
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}
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}
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$this->db->insert($this->table_name,$data,false,__LINE__,__FILE__);
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if ($this->autoinc_id)
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{
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$this->data[$this->db_key_cols[$this->autoinc_id]] = $this->db->get_last_insert_id($this->table_name,$this->autoinc_id);
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}
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}
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else //update existing row, preserv other cols not used here
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{
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foreach($this->db_data_cols as $db_col => $col)
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{
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$data[$db_col] = (string) $this->data[$col] === '' && $this->empty_on_write == 'NULL' ? null : $this->data[$col];
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}
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$keys = '';
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foreach($this->db_key_cols as $db_col => $col)
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{
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$keys[$db_col] = $this->data[$col];
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}
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if (!$this->autoinc_id) // always try an insert if we have no autoinc_id, as we dont know if the data exists
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{
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$this->db->insert($this->table_name,$data,$keys,__LINE__,__FILE__);
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}
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else
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{
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$this->db->update($this->table_name,$data,$keys,__LINE__,__FILE__);
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}
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}
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$this->db2data();
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return $this->db->Errno;
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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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* @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 (!is_array($keys) || !count($keys)) // use internal data
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{
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$data = $this->data;
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$keys = $this->db_key_cols;
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}
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else // data and keys are supplied in $keys
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{
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$data = $keys; $keys = array();
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foreach($this->db_cols as $db_col => $col)
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{
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if (isset($data[$col]))
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{
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$keys[$db_col] = $col;
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}
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}
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}
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$data = $this->data2db($data);
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foreach($keys as $db_col => $col)
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{
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$query[$db_col] = $data[$col];
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}
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$this->db->delete($this->table_name,$query,__LINE__,__FILE__);
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return $this->db->affected_rows();
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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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* '*' and '?' are replaced with sql-wildcards '%' and '_'
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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 $only_keys=true True returns only keys, False returns all cols
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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)
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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. ", table2 WHERE x=y" or
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* "LEFT JOIN table2 ON (x=y)", Note: there's no quoting done on $join!
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* @return array of matching rows (the row is an array of the cols) or False
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*/
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function &search($criteria,$only_keys=True,$order_by='',$extra_cols='',$wildcard='',$empty=False,$op='AND',$start=false,$filter=null,$join='')
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{
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if ($this->debug) echo "<p>so_sql::search(".print_r($criteria,true).",'$only_keys','$order_by','$extra_cols','$wildcard','$empty','$op','$start',".print_r($filter,true).",'$join')</p>\n";
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if (!is_array($criteria))
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{
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$query = $criteria;
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}
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else
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{
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$criteria = $this->data2db($criteria);
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foreach($this->db_cols as $db_col => $col)
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{
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if (isset($filter[$col]) && $filter[$col]) continue; // added later
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if (isset($criteria[$col]) && ($empty || $criteria[$col] != ''))
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{
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if ($wildcard || strstr($criteria[$col],'*') || strstr($criteria[$col],'?'))
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{
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$query[] = $db_col.' LIKE '.$this->db->quote($wildcard.str_replace(array('%','_','*','?'),array('\\%','\\_','%','_'),$criteria[$col]).$wildcard);
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}
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else
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{
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$query[$db_col] = $criteria[$col];
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}
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}
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}
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if (is_array($query) && $op != 'AND') $query = $this->db->column_data_implode(' '.$op.' ',$query);
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}
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if (is_array($filter))
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{
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$db_filter = array();
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$data2db_filter = $this->data2db($filter);
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if (!is_array($data2db_filter)) {
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echo function_backtrace()."<br/>\n";
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echo "filter=";_debug_array($filter);
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echo "data2db(filter)=";_debug_array($data2db_filter);
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}
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foreach($data2db_filter as $col => $val)
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{
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if ($val !== '')
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{
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// check if a db-internal name conversation necessary
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if (!is_numeric($col) && ($c = array_search($col,$this->db_cols)))
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{
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$col = $c;
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}
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$db_filter[$col] = $val;
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}
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}
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if ($query)
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{
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if ($op != 'AND')
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{
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$db_filter[] = '('.$this->db->column_data_implode(' '.$op.' ',$query).')';
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}
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else
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{
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$db_filter = array_merge($db_filter,$query);
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}
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}
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$query = $db_filter;
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}
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$num_rows = 0; // as spec. in max_matches in the user-prefs
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if (is_array($start)) list($start,$num_rows) = $start;
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if ($start !== false && $num_rows != 1) // need to get the total too, saved in $this->total
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{
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if (!$join || stristr($join,'LEFT JOIN'))
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{
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$this->db->select($this->table_name,'COUNT(*)',$query,__LINE__,__FILE__);
|
|
$this->total = $this->db->next_record() ? (int) $this->db->f(0) : false;
|
|
}
|
|
else // cant do a count, have to run the query without limit
|
|
{
|
|
$this->db->select($this->table_name,($only_keys === true ? implode(',',$this->db_key_cols) : (!$only_keys ? '*' : $only_keys)).
|
|
($extra_cols ? ','.(is_array($extra_cols) ? implode(',',$extra_cols) : $extra_cols) : ''),
|
|
$query,__LINE__,__FILE__,false,$order_by && !stristr($order_by,'ORDER BY') ? 'ORDER BY '.$order_by : $order_by,false,0,$join);
|
|
$this->total = $this->db->num_rows();
|
|
}
|
|
}
|
|
$this->db->select($this->table_name,($only_keys === true ? implode(',',$this->db_key_cols) : (!$only_keys ? '*' : $only_keys)).
|
|
($extra_cols ? ','.(is_array($extra_cols) ? implode(',',$extra_cols) : $extra_cols) : ''),
|
|
$query,__LINE__,__FILE__,$start,$order_by && !stristr($order_by,'ORDER BY') ? 'ORDER BY '.$order_by : $order_by,false,$num_rows,$join);
|
|
|
|
if ($this->debug)
|
|
{
|
|
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) // only primary key
|
|
{
|
|
$cols = $this->db_key_cols;
|
|
}
|
|
else
|
|
{
|
|
$cols = array();
|
|
foreach(explode(',',str_replace(array('DISTINCT ','distinct '),'',$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
|
|
{
|
|
$cols[$col] = $col;
|
|
}
|
|
}
|
|
}
|
|
if ($extra_cols) // extra columns to report
|
|
{
|
|
foreach(is_array($extra_cols) ? $extra_cols : explode(',',$extra_cols) as $col)
|
|
{
|
|
if (stristr($col,'as')) $col = preg_replace('/^.*as +([a-z0-9_]+) *$/i','\\1',$col);
|
|
$cols[$col] = $col;
|
|
}
|
|
}
|
|
$arr = array();
|
|
for ($n = 0; ($row = $this->db->row(true)); ++$n)
|
|
{
|
|
$data = array();
|
|
foreach($cols as $db_col => $col)
|
|
{
|
|
$data[$col] = $row[$db_col];
|
|
}
|
|
$arr[] = $this->db2data($data);
|
|
}
|
|
return $n ? $arr : False;
|
|
}
|
|
|
|
/**
|
|
* 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 $join!
|
|
*/
|
|
function get_rows($query,&$rows,&$readonlys,$join='')
|
|
{
|
|
if ($this->debug)
|
|
{
|
|
echo "<p>so_sql::get_rows(".print_r($query,true).",,)</p>\n";
|
|
}
|
|
$criteria = array();
|
|
if ($query['search'])
|
|
{
|
|
foreach($this->db_cols as $col) // we search all cols
|
|
{
|
|
$criteria[$col] = $query['search'];
|
|
}
|
|
}
|
|
$rows = (array) $this->search($criteria,false,$query['order']?$query['order'].' '.$query['sort']:'',
|
|
'','%',false,'OR',(int)$query['start'],$query['col_filter'],$join);
|
|
|
|
return $this->total;
|
|
}
|
|
|
|
/**
|
|
* Check if values for unique keys are unique
|
|
*
|
|
* @param array $data 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;
|
|
}
|
|
$n = 1;
|
|
foreach($this->db_uni_cols as $db_col => $col)
|
|
{
|
|
if (list($other) = $this->search(array($db_col => $data[$col])))
|
|
{
|
|
foreach($this->db_key_cols as $db_key_col => $key_col)
|
|
{
|
|
if ($data[$key_col] != $other[$key_col])
|
|
{
|
|
if ($this->debug)
|
|
{
|
|
echo "<p>not_unique in '$col' as for '$key_col': '${data[$key_col]}' != '${other[$key_col]}'</p>\n";
|
|
}
|
|
return $n; // different entry => $n not unique
|
|
}
|
|
}
|
|
}
|
|
++$n;
|
|
}
|
|
return 0;
|
|
}
|
|
}
|