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770 lines
20 KiB
PHP
770 lines
20 KiB
PHP
<?php
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/*
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Copyright (c) 2009-2019 F3::Factory/Bong Cosca, All rights reserved.
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This file is part of the Fat-Free Framework (http://fatfreeframework.com).
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This is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or later.
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Fat-Free Framework is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with Fat-Free Framework. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace DB\SQL;
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//! SQL data mapper
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class Mapper extends \DB\Cursor {
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//@{ Error messages
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const
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E_PKey='Table %s does not have a primary key';
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//@}
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protected
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//! PDO wrapper
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$db,
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//! Database engine
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$engine,
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//! SQL table
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$source,
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//! SQL table (quoted)
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$table,
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//! Alias for SQL table
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$as,
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//! Last insert ID
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$_id,
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//! Defined fields
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$fields,
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//! Adhoc fields
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$adhoc=[],
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//! Dynamic properties
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$props=[];
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/**
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* Return database type
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* @return string
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**/
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function dbtype() {
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return 'SQL';
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}
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/**
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* Return mapped table
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* @return string
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**/
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function table() {
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return $this->source;
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}
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/**
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* Return TRUE if any/specified field value has changed
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* @return bool
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* @param $key string
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**/
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function changed($key=NULL) {
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if (isset($key))
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return $this->fields[$key]['changed'];
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foreach($this->fields as $key=>$field)
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if ($field['changed'])
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return TRUE;
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return FALSE;
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}
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/**
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* Return TRUE if field is defined
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* @return bool
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* @param $key string
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**/
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function exists($key) {
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return array_key_exists($key,$this->fields+$this->adhoc);
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}
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/**
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* Assign value to field
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* @return scalar
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* @param $key string
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* @param $val scalar
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**/
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function set($key,$val) {
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if (array_key_exists($key,$this->fields)) {
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$val=is_null($val) && $this->fields[$key]['nullable']?
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NULL:$this->db->value($this->fields[$key]['pdo_type'],$val);
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if ($this->fields[$key]['initial']!==$val ||
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$this->fields[$key]['default']!==$val && is_null($val))
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$this->fields[$key]['changed']=TRUE;
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return $this->fields[$key]['value']=$val;
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}
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// Adjust result on existing expressions
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if (isset($this->adhoc[$key]))
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$this->adhoc[$key]['value']=$val;
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elseif (is_string($val))
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// Parenthesize expression in case it's a subquery
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$this->adhoc[$key]=['expr'=>'('.$val.')','value'=>NULL];
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else
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$this->props[$key]=$val;
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return $val;
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}
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/**
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* Retrieve value of field
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* @return scalar
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* @param $key string
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**/
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function &get($key) {
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if ($key=='_id')
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return $this->_id;
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elseif (array_key_exists($key,$this->fields))
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return $this->fields[$key]['value'];
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elseif (array_key_exists($key,$this->adhoc))
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return $this->adhoc[$key]['value'];
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elseif (array_key_exists($key,$this->props))
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return $this->props[$key];
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user_error(sprintf(self::E_Field,$key),E_USER_ERROR);
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}
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/**
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* Clear value of field
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* @return NULL
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* @param $key string
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**/
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function clear($key) {
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if (array_key_exists($key,$this->adhoc))
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unset($this->adhoc[$key]);
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else
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unset($this->props[$key]);
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}
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/**
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* Invoke dynamic method
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* @return mixed
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* @param $func string
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* @param $args array
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**/
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function __call($func,$args) {
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return call_user_func_array(
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(array_key_exists($func,$this->props)?
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$this->props[$func]:
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$this->$func),$args
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);
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}
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/**
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* Convert array to mapper object
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* @return static
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* @param $row array
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**/
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function factory($row) {
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$mapper=clone($this);
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$mapper->reset();
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foreach ($row as $key=>$val) {
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if (array_key_exists($key,$this->fields))
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$var='fields';
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elseif (array_key_exists($key,$this->adhoc))
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$var='adhoc';
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else
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continue;
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$mapper->{$var}[$key]['value']=$val;
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$mapper->{$var}[$key]['initial']=$val;
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if ($var=='fields' && $mapper->{$var}[$key]['pkey'])
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$mapper->{$var}[$key]['previous']=$val;
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}
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$mapper->query=[clone($mapper)];
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if (isset($mapper->trigger['load']))
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\Base::instance()->call($mapper->trigger['load'],$mapper);
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return $mapper;
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}
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/**
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* Return fields of mapper object as an associative array
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* @return array
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* @param $obj object
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**/
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function cast($obj=NULL) {
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if (!$obj)
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$obj=$this;
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return array_map(
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function($row) {
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return $row['value'];
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},
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$obj->fields+$obj->adhoc
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);
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}
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/**
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* Build query string and arguments
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* @return array
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* @param $fields string
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* @param $filter string|array
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* @param $options array
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**/
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function stringify($fields,$filter=NULL,array $options=NULL) {
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if (!$options)
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$options=[];
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$options+=[
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'group'=>NULL,
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'order'=>NULL,
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'limit'=>0,
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'offset'=>0,
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'comment'=>NULL
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];
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$db=$this->db;
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$sql='SELECT '.$fields.' FROM '.$this->table;
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if (isset($this->as))
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$sql.=' AS '.$this->db->quotekey($this->as);
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$args=[];
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if (is_array($filter)) {
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$args=isset($filter[1]) && is_array($filter[1])?
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$filter[1]:
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array_slice($filter,1,NULL,TRUE);
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$args=is_array($args)?$args:[1=>$args];
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list($filter)=$filter;
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}
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if ($filter)
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$sql.=' WHERE '.$filter;
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if ($options['group']) {
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$sql.=' GROUP BY '.implode(',',array_map(
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function($str) use($db) {
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return preg_replace_callback(
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'/\b(\w+[._\-\w]*)\h*(HAVING.+|$)/i',
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function($parts) use($db) {
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return $db->quotekey($parts[1]).
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(isset($parts[2])?(' '.$parts[2]):'');
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},
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$str
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);
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},
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explode(',',$options['group'])));
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}
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if ($options['order']) {
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$char=substr($db->quotekey(''),0,1);// quoting char
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$order=' ORDER BY '.(is_bool(strpos($options['order'],$char))?
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implode(',',array_map(function($str) use($db) {
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return preg_match('/^\h*(\w+[._\-\w]*)'.
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'(?:\h+((?:ASC|DESC)[\w\h]*))?\h*$/i',
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$str,$parts)?
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($db->quotekey($parts[1]).
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(isset($parts[2])?(' '.$parts[2]):'')):$str;
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},explode(',',$options['order']))):
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$options['order']);
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}
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// SQL Server fixes
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if (preg_match('/mssql|sqlsrv|odbc/', $this->engine) &&
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($options['limit'] || $options['offset'])) {
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// order by pkey when no ordering option was given
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if (!$options['order'])
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foreach ($this->fields as $key=>$field)
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if ($field['pkey']) {
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$order=' ORDER BY '.$db->quotekey($key);
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break;
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}
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$ofs=$options['offset']?(int)$options['offset']:0;
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$lmt=$options['limit']?(int)$options['limit']:0;
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if (strncmp($db->version(),'11',2)>=0) {
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// SQL Server >= 2012
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$sql.=$order.' OFFSET '.$ofs.' ROWS';
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if ($lmt)
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$sql.=' FETCH NEXT '.$lmt.' ROWS ONLY';
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}
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else {
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// SQL Server 2008
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$sql=preg_replace('/SELECT/',
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'SELECT '.
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($lmt>0?'TOP '.($ofs+$lmt):'').' ROW_NUMBER() '.
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'OVER ('.$order.') AS rnum,',$sql.$order,1);
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$sql='SELECT * FROM ('.$sql.') x WHERE rnum > '.($ofs);
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}
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}
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else {
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if (isset($order))
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$sql.=$order;
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if ($options['limit'])
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$sql.=' LIMIT '.(int)$options['limit'];
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if ($options['offset'])
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$sql.=' OFFSET '.(int)$options['offset'];
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}
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if ($options['comment'])
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$sql.="\n".' /* '.$options['comment'].' */';
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return [$sql,$args];
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}
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/**
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* Build query string and execute
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* @return static[]
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* @param $fields string
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* @param $filter string|array
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* @param $options array
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* @param $ttl int|array
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**/
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function select($fields,$filter=NULL,array $options=NULL,$ttl=0) {
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list($sql,$args)=$this->stringify($fields,$filter,$options);
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$result=$this->db->exec($sql,$args,$ttl);
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$out=[];
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foreach ($result as &$row) {
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foreach ($row as $field=>&$val) {
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if (array_key_exists($field,$this->fields)) {
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if (!is_null($val) || !$this->fields[$field]['nullable'])
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$val=$this->db->value(
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$this->fields[$field]['pdo_type'],$val);
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}
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unset($val);
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}
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$out[]=$this->factory($row);
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unset($row);
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}
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return $out;
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}
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/**
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* Return records that match criteria
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* @return static[]
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* @param $filter string|array
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* @param $options array
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* @param $ttl int|array
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**/
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function find($filter=NULL,array $options=NULL,$ttl=0) {
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if (!$options)
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$options=[];
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$options+=[
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'group'=>NULL,
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'order'=>NULL,
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'limit'=>0,
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'offset'=>0
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];
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$adhoc='';
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foreach ($this->adhoc as $key=>$field)
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$adhoc.=','.$field['expr'].' AS '.$this->db->quotekey($key);
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return $this->select(
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($options['group'] && !preg_match('/mysql|sqlite/',$this->engine)?
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$options['group']:
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implode(',',array_map([$this->db,'quotekey'],
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array_keys($this->fields)))).$adhoc,$filter,$options,$ttl);
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}
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/**
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* Count records that match criteria
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* @return int
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* @param $filter string|array
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* @param $options array
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* @param $ttl int|array
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**/
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function count($filter=NULL,array $options=NULL,$ttl=0) {
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$adhoc=[];
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// with grouping involved, we need to wrap the actualy query and count the results
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if ($subquery_mode=($options && !empty($options['group']))) {
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$group_string=preg_replace('/HAVING.+$/i','',$options['group']);
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$group_fields=array_flip(array_map('trim',explode(',',$group_string)));
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foreach ($this->adhoc as $key=>$field)
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// add adhoc fields that are used for grouping
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if (isset($group_fields[$key]))
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$adhoc[]=$field['expr'].' AS '.$this->db->quotekey($key);
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$fields=implode(',',$adhoc);
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if (empty($fields))
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// Select at least one field, ideally the grouping fields
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// or sqlsrv fails
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$fields=$group_string;
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if (preg_match('/mssql|dblib|sqlsrv/',$this->engine))
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$fields='TOP 100 PERCENT '.$fields;
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} else {
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// for simple count just add a new adhoc counter
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$fields='COUNT(*) AS '.$this->db->quotekey('_rows');
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}
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// no need to order for a count query as that could include virtual
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// field references that are not present here
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unset($options['order']);
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list($sql,$args)=$this->stringify($fields,$filter,$options);
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if ($subquery_mode)
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$sql='SELECT COUNT(*) AS '.$this->db->quotekey('_rows').' '.
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'FROM ('.$sql.') AS '.$this->db->quotekey('_temp');
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$result=$this->db->exec($sql,$args,$ttl);
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unset($this->adhoc['_rows']);
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return (int)$result[0]['_rows'];
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}
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/**
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* Return record at specified offset using same criteria as
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* previous load() call and make it active
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* @return static
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* @param $ofs int
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**/
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function skip($ofs=1) {
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$out=parent::skip($ofs);
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$dry=$this->dry();
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foreach ($this->fields as $key=>&$field) {
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$field['value']=$dry?NULL:$out->fields[$key]['value'];
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$field['initial']=$field['value'];
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$field['changed']=FALSE;
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if ($field['pkey'])
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$field['previous']=$dry?NULL:$out->fields[$key]['value'];
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unset($field);
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}
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foreach ($this->adhoc as $key=>&$field) {
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$field['value']=$dry?NULL:$out->adhoc[$key]['value'];
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unset($field);
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}
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if (!$dry && isset($this->trigger['load']))
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\Base::instance()->call($this->trigger['load'],$this);
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return $out;
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}
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/**
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* Insert new record
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* @return static
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**/
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function insert() {
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$args=[];
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$actr=0;
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$nctr=0;
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$fields='';
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$values='';
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$filter='';
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$pkeys=[];
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$aikeys=[];
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$nkeys=[];
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$ckeys=[];
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$inc=NULL;
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foreach ($this->fields as $key=>$field)
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if ($field['pkey'])
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$pkeys[$key]=$field['previous'];
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if (isset($this->trigger['beforeinsert']) &&
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\Base::instance()->call($this->trigger['beforeinsert'],
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[$this,$pkeys])===FALSE)
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return $this;
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if ($this->valid())
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// duplicate record
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foreach ($this->fields as $key=>&$field) {
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$field['changed']=true;
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if ($field['pkey'] && !$inc && ($field['auto_inc'] === TRUE ||
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($field['auto_inc'] === NULL && !$field['nullable']
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&& $field['pdo_type']==\PDO::PARAM_INT)
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))
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$inc=$key;
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unset($field);
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}
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foreach ($this->fields as $key=>&$field) {
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if ($field['auto_inc']) {
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$aikeys[] = $key;
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}
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if ($field['pkey']) {
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$field['previous']=$field['value'];
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if (!$inc && empty($field['value']) &&
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($field['auto_inc'] === TRUE || ($field['auto_inc'] === NULL
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&& $field['pdo_type']==\PDO::PARAM_INT && !$field['nullable']))
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)
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$inc=$key;
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$filter.=($filter?' AND ':'').$this->db->quotekey($key).'=?';
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$nkeys[$nctr+1]=[$field['value'],$field['pdo_type']];
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++$nctr;
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}
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if ($field['changed'] && $key!=$inc) {
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$fields.=($actr?',':'').$this->db->quotekey($key);
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$values.=($actr?',':'').'?';
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$args[$actr+1]=[$field['value'],$field['pdo_type']];
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++$actr;
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$ckeys[]=$key;
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}
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unset($field);
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}
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if ($fields) {
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$add=$aik='';
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if ($this->engine=='pgsql' && !empty($pkeys)) {
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$names=array_keys($pkeys);
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$aik=end($names);
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$add=' RETURNING '.$this->db->quotekey($aik);
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}
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$lID=$this->db->exec(
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(preg_match('/mssql|dblib|sqlsrv/',$this->engine) &&
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array_intersect(array_keys($aikeys),$ckeys)?
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'SET IDENTITY_INSERT '.$this->table.' ON;':'').
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'INSERT INTO '.$this->table.' ('.$fields.') '.
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'VALUES ('.$values.')'.$add,$args
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);
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if ($this->engine=='pgsql' && $lID && $aik)
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$this->_id=$lID[0][$aik];
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elseif ($this->engine!='oci')
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$this->_id=$this->db->lastinsertid();
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// Reload to obtain default and auto-increment field values
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if ($reload=(($inc && $this->_id) || $filter))
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$this->load($inc?
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[$inc.'=?',$this->db->value(
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$this->fields[$inc]['pdo_type'],$this->_id)]:
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[$filter,$nkeys]);
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if (isset($this->trigger['afterinsert']))
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\Base::instance()->call($this->trigger['afterinsert'],
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[$this,$pkeys]);
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// reset changed flag after calling afterinsert
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if (!$reload)
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foreach ($this->fields as $key=>&$field) {
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$field['changed']=FALSE;
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$field['initial']=$field['value'];
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unset($field);
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}
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}
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return $this;
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}
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/**
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* Update current record
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* @return static
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**/
|
|
function update() {
|
|
$args=[];
|
|
$ctr=0;
|
|
$pairs='';
|
|
$pkeys=[];
|
|
foreach ($this->fields as $key=>$field)
|
|
if ($field['pkey'])
|
|
$pkeys[$key]=$field['previous'];
|
|
if (isset($this->trigger['beforeupdate']) &&
|
|
\Base::instance()->call($this->trigger['beforeupdate'],
|
|
[$this,$pkeys])===FALSE)
|
|
return $this;
|
|
foreach ($this->fields as $key=>$field)
|
|
if ($field['changed']) {
|
|
$pairs.=($pairs?',':'').$this->db->quotekey($key).'=?';
|
|
$args[++$ctr]=[$field['value'],$field['pdo_type']];
|
|
}
|
|
if ($pairs) {
|
|
$filter='';
|
|
foreach ($this->fields as $key=>$field)
|
|
if ($field['pkey']) {
|
|
$filter.=($filter?' AND ':' WHERE ').
|
|
$this->db->quotekey($key).'=?';
|
|
$args[++$ctr]=[$field['previous'],$field['pdo_type']];
|
|
}
|
|
if (!$filter)
|
|
user_error(sprintf(self::E_PKey,$this->source),E_USER_ERROR);
|
|
$sql='UPDATE '.$this->table.' SET '.$pairs.$filter;
|
|
$this->db->exec($sql,$args);
|
|
}
|
|
if (isset($this->trigger['afterupdate']))
|
|
\Base::instance()->call($this->trigger['afterupdate'],
|
|
[$this,$pkeys]);
|
|
// reset changed flag after calling afterupdate
|
|
foreach ($this->fields as $key=>&$field) {
|
|
$field['changed']=FALSE;
|
|
$field['initial']=$field['value'];
|
|
unset($field);
|
|
}
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* batch-update multiple records at once
|
|
* @param string|array $filter
|
|
* @return int
|
|
*/
|
|
function updateAll($filter=NULL) {
|
|
$args=[];
|
|
$ctr=$out=0;
|
|
$pairs='';
|
|
foreach ($this->fields as $key=>$field)
|
|
if ($field['changed']) {
|
|
$pairs.=($pairs?',':'').$this->db->quotekey($key).'=?';
|
|
$args[++$ctr]=[$field['value'],$field['pdo_type']];
|
|
}
|
|
if ($filter)
|
|
if (is_array($filter)) {
|
|
$cond=array_shift($filter);
|
|
$args=array_merge($args,$filter);
|
|
$filter=' WHERE '.$cond;
|
|
} else
|
|
$filter=' WHERE '.$filter;
|
|
if ($pairs) {
|
|
$sql='UPDATE '.$this->table.' SET '.$pairs.$filter;
|
|
$out = $this->db->exec($sql,$args);
|
|
}
|
|
// reset changed flag after calling afterupdate
|
|
foreach ($this->fields as $key=>&$field) {
|
|
$field['changed']=FALSE;
|
|
$field['initial']=$field['value'];
|
|
unset($field);
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
|
|
/**
|
|
* Delete current record
|
|
* @return int
|
|
* @param $quick bool
|
|
* @param $filter string|array
|
|
**/
|
|
function erase($filter=NULL,$quick=TRUE) {
|
|
if (isset($filter)) {
|
|
if (!$quick) {
|
|
$out=0;
|
|
foreach ($this->find($filter) as $mapper)
|
|
$out+=$mapper->erase();
|
|
return $out;
|
|
}
|
|
$args=[];
|
|
if (is_array($filter)) {
|
|
$args=isset($filter[1]) && is_array($filter[1])?
|
|
$filter[1]:
|
|
array_slice($filter,1,NULL,TRUE);
|
|
$args=is_array($args)?$args:[1=>$args];
|
|
list($filter)=$filter;
|
|
}
|
|
return $this->db->
|
|
exec('DELETE FROM '.$this->table.
|
|
($filter?' WHERE '.$filter:'').';',$args);
|
|
}
|
|
$args=[];
|
|
$ctr=0;
|
|
$filter='';
|
|
$pkeys=[];
|
|
foreach ($this->fields as $key=>&$field) {
|
|
if ($field['pkey']) {
|
|
$filter.=($filter?' AND ':'').$this->db->quotekey($key).'=?';
|
|
$args[$ctr+1]=[$field['previous'],$field['pdo_type']];
|
|
$pkeys[$key]=$field['previous'];
|
|
++$ctr;
|
|
}
|
|
$field['value']=NULL;
|
|
$field['changed']=(bool)$field['default'];
|
|
if ($field['pkey'])
|
|
$field['previous']=NULL;
|
|
unset($field);
|
|
}
|
|
if (!$filter)
|
|
user_error(sprintf(self::E_PKey,$this->source),E_USER_ERROR);
|
|
foreach ($this->adhoc as &$field) {
|
|
$field['value']=NULL;
|
|
unset($field);
|
|
}
|
|
parent::erase();
|
|
if (isset($this->trigger['beforeerase']) &&
|
|
\Base::instance()->call($this->trigger['beforeerase'],
|
|
[$this,$pkeys])===FALSE)
|
|
return 0;
|
|
$out=$this->db->
|
|
exec('DELETE FROM '.$this->table.' WHERE '.$filter.';',$args);
|
|
if (isset($this->trigger['aftererase']))
|
|
\Base::instance()->call($this->trigger['aftererase'],
|
|
[$this,$pkeys]);
|
|
return $out;
|
|
}
|
|
|
|
/**
|
|
* Reset cursor
|
|
* @return NULL
|
|
**/
|
|
function reset() {
|
|
foreach ($this->fields as &$field) {
|
|
$field['value']=NULL;
|
|
$field['initial']=NULL;
|
|
$field['changed']=FALSE;
|
|
if ($field['pkey'])
|
|
$field['previous']=NULL;
|
|
unset($field);
|
|
}
|
|
foreach ($this->adhoc as &$field) {
|
|
$field['value']=NULL;
|
|
unset($field);
|
|
}
|
|
parent::reset();
|
|
}
|
|
|
|
/**
|
|
* Hydrate mapper object using hive array variable
|
|
* @return NULL
|
|
* @param $var array|string
|
|
* @param $func callback
|
|
**/
|
|
function copyfrom($var,$func=NULL) {
|
|
if (is_string($var))
|
|
$var=\Base::instance()->$var;
|
|
if ($func)
|
|
$var=call_user_func($func,$var);
|
|
foreach ($var as $key=>$val)
|
|
if (in_array($key,array_keys($this->fields)))
|
|
$this->set($key,$val);
|
|
}
|
|
|
|
/**
|
|
* Populate hive array variable with mapper fields
|
|
* @return NULL
|
|
* @param $key string
|
|
**/
|
|
function copyto($key) {
|
|
$var=&\Base::instance()->ref($key);
|
|
foreach ($this->fields+$this->adhoc as $key=>$field)
|
|
$var[$key]=$field['value'];
|
|
}
|
|
|
|
/**
|
|
* Return schema and, if the first argument is provided, update it
|
|
* @return array
|
|
* @param $fields NULL|array
|
|
**/
|
|
function schema($fields=null) {
|
|
if ($fields)
|
|
$this->fields = $fields;
|
|
return $this->fields;
|
|
}
|
|
|
|
/**
|
|
* Return field names
|
|
* @return array
|
|
* @param $adhoc bool
|
|
**/
|
|
function fields($adhoc=TRUE) {
|
|
return array_keys($this->fields+($adhoc?$this->adhoc:[]));
|
|
}
|
|
|
|
/**
|
|
* Return TRUE if field is not nullable
|
|
* @return bool
|
|
* @param $field string
|
|
**/
|
|
function required($field) {
|
|
return isset($this->fields[$field]) &&
|
|
!$this->fields[$field]['nullable'];
|
|
}
|
|
|
|
/**
|
|
* Retrieve external iterator for fields
|
|
* @return object
|
|
**/
|
|
function getiterator() {
|
|
return new \ArrayIterator($this->cast());
|
|
}
|
|
|
|
/**
|
|
* Assign alias for table
|
|
* @param $alias string
|
|
**/
|
|
function alias($alias) {
|
|
$this->as=$alias;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Instantiate class
|
|
* @param $db \DB\SQL
|
|
* @param $table string
|
|
* @param $fields array|string
|
|
* @param $ttl int|array
|
|
**/
|
|
function __construct(\DB\SQL $db,$table,$fields=NULL,$ttl=60) {
|
|
$this->db=$db;
|
|
$this->engine=$db->driver();
|
|
if ($this->engine=='oci')
|
|
$table=strtoupper($table);
|
|
$this->source=$table;
|
|
$this->table=$this->db->quotekey($table);
|
|
$this->fields=$db->schema($table,$fields,$ttl);
|
|
$this->reset();
|
|
}
|
|
|
|
}
|