492 lines
14 KiB
PHP
492 lines
14 KiB
PHP
<?php
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require_once("Access.php");
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/**
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* Doctrine_Collection
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* Collection of Doctrine_Record objects.
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*
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* @package Doctrine ORM
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* @url www.phpdoctrine.com
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* @license LGPL
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*/
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class Doctrine_Collection extends Doctrine_Access implements Countable, IteratorAggregate, Serializable {
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/**
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* @var array $data an array containing the data access objects of this collection
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*/
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protected $data = array();
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/**
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* @var Doctrine_Table $table each collection has only records of specified table
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*/
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protected $table;
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/**
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* @var Doctrine_Record $reference collection can belong to a record
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*/
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protected $reference;
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/**
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* @var string $reference_field the reference field of the collection
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*/
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protected $reference_field;
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/**
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* @var Doctrine_Relation the record this collection is related to, if any
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*/
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protected $relation;
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/**
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* @var boolean $expandable whether or not this collection has been expanded
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*/
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protected $expandable = true;
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/**
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* @var array $expanded
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*/
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protected $expanded = array();
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/**
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* @var mixed $generator
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*/
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protected $generator;
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/**
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* @var Doctrine_Null $null used for extremely fast SQL null value testing
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*/
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protected static $null;
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/**
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* constructor
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*/
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public function __construct(Doctrine_Table $table) {
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$this->table = $table;
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$name = $table->getAttribute(Doctrine::ATTR_COLL_KEY);
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if($name !== null) {
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$this->generator = new Doctrine_IndexGenerator($name);
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}
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}
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/**
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* initNullObject
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*/
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public static function initNullObject(Doctrine_Null $null) {
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self::$null = $null;
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}
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/**
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* @return object Doctrine_Table
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*/
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public function getTable() {
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return $this->table;
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}
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/**
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* this method is automatically called when this Doctrine_Collection is serialized
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*
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* @return array
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*/
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public function serialize() {
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$vars = get_object_vars($this);
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unset($vars['reference']);
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unset($vars['reference_field']);
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unset($vars['relation']);
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unset($vars['expandable']);
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unset($vars['expanded']);
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unset($vars['generator']);
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$vars['table'] = $vars['table']->getComponentName();
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return serialize($vars);
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}
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/**
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* unseralize
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* this method is automatically called everytime a Doctrine_Collection object is unserialized
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*
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* @return void
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*/
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public function unserialize($serialized) {
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$manager = Doctrine_Manager::getInstance();
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$session = $manager->getCurrentSession();
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$array = unserialize($serialized);
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foreach($array as $name => $values) {
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$this->$name = $values;
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}
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$this->table = $session->getTable($this->table->getComponenName());
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$this->expanded = array();
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$this->expandable = true;
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$name = $table->getAttribute(Doctrine::ATTR_COLL_KEY);
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if($name !== null) {
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$this->generator = new Doctrine_IndexGenerator($name);
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}
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}
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/**
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* whether or not an offset batch has been expanded
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* @return boolean
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*/
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public function isExpanded($offset) {
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return isset($this->expanded[$offset]);
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}
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/**
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* whether or not this collection is expandable
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* @return boolean
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*/
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public function isExpandable() {
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return $this->expandable;
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}
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/**
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* @param Doctrine_IndexGenerator $generator
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* @return void
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*/
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public function setGenerator($generator) {
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$this->generator = $generator;
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}
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/**
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* @return Doctrine_IndexGenerator
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*/
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public function getGenerator() {
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return $this->generator;
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}
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/**
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* @return array
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*/
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public function getData() {
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return $this->data;
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}
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/**
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* @param array $data
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*/
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public function addData(array $data) {
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$this->data[] = $data;
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}
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/**
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* @return mixed
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*/
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public function getLast() {
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return end($this->data);
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}
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/**
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* @return void
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*/
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public function setReference(Doctrine_Record $record,Doctrine_Relation $relation) {
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$this->reference = $record;
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$this->relation = $relation;
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if($relation instanceof Doctrine_ForeignKey ||
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$relation instanceof Doctrine_LocalKey) {
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$this->reference_field = $relation->getForeign();
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$value = $record->get($relation->getLocal());
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foreach($this->getNormalIterator() as $record) {
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if($value !== null) {
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$record->rawSet($this->reference_field, $value);
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} else {
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$record->rawSet($this->reference_field, $this->reference);
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}
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}
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}
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}
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/**
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* @return mixed
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*/
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public function getReference() {
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return $this->reference;
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}
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/**
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* @return boolean
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*/
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public function expand($key) {
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$where = array();
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$params = array();
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$limit = null;
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$offset = null;
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switch(get_class($this)):
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case "Doctrine_Collection_Offset":
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$limit = $this->getLimit();
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$offset = (floor($key / $limit) * $limit);
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if( ! $this->expandable && isset($this->expanded[$offset]))
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return false;
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$fields = implode(", ",$this->table->getColumnNames());
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break;
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default:
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if( ! $this->expandable)
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return false;
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if( ! isset($this->reference))
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return false;
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$id = $this->reference->getID();
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if(empty($id))
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return false;
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switch(get_class($this)):
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case "Doctrine_Collection_Immediate":
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$fields = implode(", ",$this->table->getColumnNames());
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break;
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default:
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$fields = implode(", ",$this->table->getPrimaryKeys());
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endswitch;
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endswitch;
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if(isset($this->relation)) {
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if($this->relation instanceof Doctrine_ForeignKey) {
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$params = array($this->reference->getID());
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$where[] = $this->reference_field." = ?";
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if( ! isset($offset)) {
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$ids = $this->getPrimaryKeys();
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if( ! empty($ids)) {
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$where[] = $this->table->getIdentifier()." NOT IN (".substr(str_repeat("?, ",count($ids)),0,-2).")";
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$params = array_merge($params,$ids);
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}
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$this->expandable = false;
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}
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} elseif($this->relation instanceof Doctrine_Association) {
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$asf = $fk->getAssociationFactory();
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$query = "SELECT ".$foreign." FROM ".$asf->getTableName()." WHERE ".$local."=".$this->getID();
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$table = $fk->getTable();
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$graph = new Doctrine_DQL_Parser($table->getSession());
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$q = "FROM ".$table->getComponentName()." WHERE ".$table->getComponentName().".".$table->getIdentifier()." IN ($query)";
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}
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}
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$query = "SELECT ".$fields." FROM ".$this->table->getTableName();
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// apply column aggregation inheritance
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foreach($this->table->getInheritanceMap() as $k => $v) {
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$where[] = $k." = ?";
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$params[] = $v;
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}
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if( ! empty($where)) {
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$query .= " WHERE ".implode(" AND ",$where);
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}
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$params = array_merge($params, array_values($this->table->getInheritanceMap()));
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$coll = $this->table->execute($query, $params, $limit, $offset);
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if( ! isset($offset)) {
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foreach($coll as $record) {
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if(isset($this->reference_field))
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$record->rawSet($this->reference_field,$this->reference);
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$this->reference->addReference($record);
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}
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} else {
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$i = $offset;
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foreach($coll as $record) {
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if(isset($this->reference)) {
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$this->reference->addReference($record,$i);
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} else
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$this->data[$i] = $record;
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$i++;
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}
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$this->expanded[$offset] = true;
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// check if the fetched collection's record count is smaller
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// than the query limit, if so this collection has been expanded to its max size
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if(count($coll) < $limit) {
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$this->expandable = false;
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}
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}
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return $coll;
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}
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/**
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* @return boolean
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*/
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public function remove($key) {
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if( ! isset($this->data[$key]))
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throw new InvalidKeyException();
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$removed = $this->data[$key];
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unset($this->data[$key]);
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return $removed;
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}
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/**
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* @param mixed $key
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* @return boolean
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*/
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public function contains($key) {
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return isset($this->data[$key]);
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}
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/**
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* @param mixed $key
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* @return object Doctrine_Record return a specified record
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*/
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public function get($key) {
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if( ! isset($this->data[$key])) {
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$this->expand($key);
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if( ! isset($this->data[$key]))
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$this->data[$key] = $this->table->create();
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if(isset($this->reference_field)) {
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$value = $this->reference->get($this->relation->getLocal());
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if($value !== null) {
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$this->data[$key]->rawSet($this->reference_field, $value);
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} else {
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$this->data[$key]->rawSet($this->reference_field, $this->reference);
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}
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}
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}
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return $this->data[$key];
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}
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/**
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* @return array an array containing all primary keys
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*/
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public function getPrimaryKeys() {
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$list = array();
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$name = $this->table->getIdentifier();
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foreach($this->data as $record):
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if(is_array($record) && isset($record[$name])) {
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$list[] = $record[$name];
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} else {
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$list[] = $record->getID();
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}
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endforeach;
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return $list;
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}
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/**
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* returns all keys
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* @return array
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*/
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public function getKeys() {
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return array_keys($this->data);
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}
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/**
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* count
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* this class implements interface countable
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* @return integer number of records in this collection
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*/
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public function count() {
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return count($this->data);
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}
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/**
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* set
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* @param integer $key
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* @param Doctrine_Record $record
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* @return void
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*/
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public function set($key,Doctrine_Record $record) {
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if(isset($this->reference_field))
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$record->rawSet($this->reference_field,$this->reference);
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$this->data[$key] = $record;
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}
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/**
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* adds a record to collection
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* @param Doctrine_Record $record record to be added
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* @param string $key optional key for the record
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* @return boolean
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*/
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public function add(Doctrine_Record $record,$key = null) {
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if(isset($this->reference_field))
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$record->rawSet($this->reference_field,$this->reference);
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if(isset($key)) {
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if(isset($this->data[$key]))
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return false;
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$this->data[$key] = $record;
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return true;
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}
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if(isset($this->generator)) {
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$key = $this->generator->getIndex($record);
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$this->data[$key] = $record;
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} else
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$this->data[] = $record;
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return true;
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}
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/**
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* @param Doctrine_Query $query
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* @param integer $key
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*/
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public function populate(Doctrine_Query $query) {
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$name = $this->table->getComponentName();
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if($this instanceof Doctrine_Collection_Immediate ||
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$this instanceof Doctrine_Collection_Offset) {
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$data = $query->getData($name);
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if(is_array($data)) {
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foreach($data as $k=>$v):
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$this->table->setData($v);
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$this->add($this->table->getRecord());
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endforeach;
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}
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} elseif($this instanceof Doctrine_Collection_Batch) {
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$this->data = $query->getData($name);
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if(isset($this->generator)) {
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foreach($this->data as $k => $v) {
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$record = $this->get($k);
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$i = $this->generator->getIndex($record);
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$this->data[$i] = $record;
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unset($this->data[$k]);
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}
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}
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}
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}
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/**
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* @return Doctrine_Iterator_Normal
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*/
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public function getNormalIterator() {
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return new Doctrine_Iterator_Normal($this);
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}
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/**
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* save
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* saves all records
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*/
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public function save() {
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$this->table->getSession()->saveCollection($this);
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}
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/**
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* single shot delete
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* deletes all records from this collection
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* uses only one database query to perform this operation
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* @return boolean
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*/
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public function delete() {
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$ids = $this->table->getSession()->deleteCollection($this);
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$this->data = array();
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}
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/**
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* getIterator
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* @return object ArrayIterator
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*/
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public function getIterator() {
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$data = $this->data;
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return new ArrayIterator($data);
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}
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/**
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* returns a string representation of this object
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*/
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public function __toString() {
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return Doctrine_Lib::getCollectionAsString($this);
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}
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}
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?>
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