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https://github.com/silverstripe/silverstripe-framework
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05dc1eee2c
http://svn.silverstripe.com/open/modules/sapphire/branches/2.2.2 ........ r50683 | aoneil | 2008-03-07 11:05:27 +1300 (Fri, 07 Mar 2008) | 2 lines #2295 - DataObjectSets cannot be iterated over multiple times concurrently ........ git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@50871 467b73ca-7a2a-4603-9d3b-597d59a354a9
91 lines
1.9 KiB
PHP
Executable File
91 lines
1.9 KiB
PHP
Executable File
<?php
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/**
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* @package sapphire
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* @subpackage model
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*/
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/**
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* This is a class used to represent key->value pairs generated from database queries.
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* The query isn't actually executed until you need it.
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* @package sapphire
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* @subpackage model
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*/
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class SQLMap extends Object implements IteratorAggregate {
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/**
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* The query used to generate the map.
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* @var SQLQuery
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*/
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protected $query;
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/**
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* Construct a SQLMap.
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* @param SQLQuery $query The query to generate this map. THis isn't executed until it's needed.
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*/
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public function __construct(SQLQuery $query) {
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if(!$query) {
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user_error('SQLMap constructed with null query.', E_USER_ERROR);
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}
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$this->query = $query;
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}
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/**
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* Get the name of an item.
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* @param string|int $id The id of the item.
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* @return string
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*/
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public function getItem($id) {
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if($id) {
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$baseTable = reset($this->query->from);
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$this->query->where[] = "$baseTable.ID = $id";
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$record = $this->query->execute()->first();
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if($record) {
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$className = $record['ClassName'];
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$obj = new $className($record);
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return $obj->Title;
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}
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}
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}
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/*
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* Iterator - necessary for foreach to work
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*/
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public function getIterator() {
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$this->genItems();
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return $this->items->getIterator();
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}
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/**
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* Get the items in this class.
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* @return DataObjectSet
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*/
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public function getItems() {
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$this->genItems();
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return $this->items;
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}
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/**
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* Generate the items in this map. This is used by
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* getItems() if the items have not been generated already.
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*/
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protected function genItems() {
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if(!isset($this->items)) {
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$this->items = new DataObjectSet();
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$items = $this->query->execute();
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foreach($items as $item) {
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$className = isset($item['RecordClassName']) ? $item['RecordClassName'] : $item['ClassName'];
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if(!$className) {
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user_error('SQLMap query could not retrieve className', E_USER_ERROR);
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}
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$this->items->push(new $className($item));
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}
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}
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}
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}
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?>
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