657 lines
18 KiB
PHP
657 lines
18 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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Doctrine::autoload('Doctrine_Access');
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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
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @category Object Relational Mapping
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* @link www.phpdoctrine.com
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* @since 1.0
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* @version $Revision$
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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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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/**
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* @var array $data an array containing the records 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 array $_snapshot a snapshot of the fetched data
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*/
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protected $_snapshot = array();
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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 $referenceField the reference field of the collection
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*/
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protected $referenceField;
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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 string $keyColumn the name of the column that is used for collection key mapping
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*/
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protected $keyColumn;
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/**
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* @var Doctrine_Null $null used for extremely fast 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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* @param Doctrine_Table|string $table
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*/
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public function __construct($table)
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{
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if ( ! ($table instanceof Doctrine_Table)) {
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$table = Doctrine_Manager::getInstance()
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->getTable($table);
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}
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$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->keyColumn = $name;
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}
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}
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/**
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* initNullObject
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* initializes the null object for this collection
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*
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* @return void
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*/
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public static function initNullObject(Doctrine_Null $null)
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{
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self::$null = $null;
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}
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/**
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* getTable
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* returns the table this collection belongs to
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*
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* @return Doctrine_Table
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*/
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public function getTable()
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{
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return $this->_table;
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}
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/**
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* setData
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*
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* @param array $data
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* @return Doctrine_Collection
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*/
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public function setData(array $data)
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{
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$this->data = $data;
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}
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/**
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* this method is automatically called when this Doctrine_Collection is serialized
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*
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* @return array
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*/
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public function serialize()
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{
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$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($serialized)
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{
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$manager = Doctrine_Manager::getInstance();
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$connection = $manager->getCurrentConnection();
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$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 = $connection->getTable($this->_table);
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$name = $this->_table->getAttribute(Doctrine::ATTR_COLL_KEY);
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if ($name !== null) {
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$this->keyColumn = $name;
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}
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}
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/**
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* setKeyColumn
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* sets the key column for this collection
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*
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* @param string $column
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* @return Doctrine_Collection
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*/
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public function setKeyColumn($column)
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{
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$this->keyColumn = $column;
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return $this;
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}
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/**
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* getKeyColumn
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* returns the name of the key column
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*
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* @return string
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*/
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public function getKeyColumn()
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{
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return $this->column;
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}
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/**
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* getData
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* returns all the records as an array
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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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{
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return $this->data;
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}
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/**
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* getFirst
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* returns the first record in the collection
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*
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* @return mixed
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*/
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public function getFirst()
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{
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return reset($this->data);
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}
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/**
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* getLast
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* returns the last record in the collection
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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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{
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return end($this->data);
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}
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/**
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* setReference
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* sets a reference pointer
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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 $relation)
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{
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$this->reference = $record;
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$this->relation = $relation;
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if ($relation instanceof Doctrine_Relation_ForeignKey
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|| $relation instanceof Doctrine_Relation_LocalKey
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) {
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$this->referenceField = $relation->getForeign();
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$value = $record->get($relation->getLocal());
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foreach ($this->data as $record) {
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if ($value !== null) {
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$record->set($this->referenceField, $value, false);
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} else {
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$record->set($this->referenceField, $this->reference, false);
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}
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}
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} elseif ($relation instanceof Doctrine_Relation_Association) {
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}
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}
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/**
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* getReference
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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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{
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return $this->reference;
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}
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/**
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* remove
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* removes a specified collection element
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*
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* @param mixed $key
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* @return boolean
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*/
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public function remove($key)
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{
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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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* contains
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* whether or not this collection contains a specified element
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*
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* @param mixed $key the key of the element
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* @return boolean
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*/
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public function contains($key)
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{
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return isset($this->data[$key]);
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}
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/**
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* get
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* returns a record for given key
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*
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* There are two special cases:
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*
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* 1. if null is given as a key a new record is created and attached
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* at the end of the collection
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*
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* 2. if given key does not exist, then a new record is create and attached
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* to the given key
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*
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* Collection also maps referential information to newly created records
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*
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* @param mixed $key the key of the element
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* @return Doctrine_Record return a specified record
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*/
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public function get($key)
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{
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if ($key === null || ! isset($this->data[$key])) {
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$record = $this->_table->create();
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if (isset($this->referenceField)) {
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$value = $this->reference->get($this->relation->getLocal());
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if ($value !== null) {
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$record->set($this->referenceField, $value, false);
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} else {
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$record->set($this->referenceField, $this->reference, false);
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}
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}
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$this->data[] = $record;
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return $record;
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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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{
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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->getIncremented();
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}
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}
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return $list;
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}
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/**
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* returns all keys
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* @return array
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*/
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public function getKeys()
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{
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return array_keys($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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* returns the number of records in this collection
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*
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* @return integer
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*/
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public function count()
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{
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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 $record)
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{
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if (isset($this->referenceField)) {
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$record->set($this->referenceField, $this->reference, false);
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}
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$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, $key = null)
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{
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if (isset($this->referenceField)) {
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$value = $this->reference->get($this->relation->getLocal());
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if ($value !== null) {
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$record->set($this->referenceField, $value, false);
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} else {
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$record->set($this->referenceField, $this->reference, false);
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}
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}
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/**
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* for some weird reason in_array cannot be used here (php bug ?)
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*
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* if used it results in fatal error : [ nesting level too deep ]
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*/
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foreach ($this->data as $val) {
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if ($val === $record) {
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return false;
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}
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}
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if (isset($key)) {
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if (isset($this->data[$key])) {
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return false;
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}
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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->keyColumn)) {
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$value = $record->get($this->keyColumn);
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if ($value === null) {
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throw new Doctrine_Collection_Exception("Couldn't create collection index. Record field '".$this->keyColumn."' was null.");
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}
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$this->data[$value] = $record;
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} else {
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$this->data[] = $record;
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}
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return true;
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}
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/**
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* loadRelated
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*
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* @param mixed $name
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* @return boolean
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*/
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public function loadRelated($name = null)
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{
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$list = array();
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$query = new Doctrine_Query($this->_table->getConnection());
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if ( ! isset($name)) {
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foreach ($this->data as $record) {
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$value = $record->getIncremented();
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if ($value !== null) {
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$list[] = $value;
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}
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}
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$query->from($this->_table->getComponentName() . '(' . implode(", ",$this->_table->getPrimaryKeys()) . ')');
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$query->where($this->_table->getComponentName() . '.id IN (' . substr(str_repeat("?, ", count($list)),0,-2) . ')');
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return $query;
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}
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$rel = $this->_table->getRelation($name);
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if ($rel instanceof Doctrine_Relation_LocalKey || $rel instanceof Doctrine_Relation_ForeignKey) {
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foreach ($this->data as $record) {
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$list[] = $record[$rel->getLocal()];
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}
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} else {
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foreach ($this->data as $record) {
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$value = $record->getIncremented();
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if ($value !== null) {
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$list[] = $value;
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}
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}
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}
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$dql = $rel->getRelationDql(count($list), 'collection');
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$coll = $query->query($dql, $list);
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$this->populateRelated($name, $coll);
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}
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/**
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* populateRelated
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*
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* @param string $name
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* @param Doctrine_Collection $coll
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* @return void
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*/
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public function populateRelated($name, Doctrine_Collection $coll)
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{
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$rel = $this->_table->getRelation($name);
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$table = $rel->getTable();
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$foreign = $rel->getForeign();
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$local = $rel->getLocal();
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if ($rel instanceof Doctrine_Relation_LocalKey) {
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foreach ($this->data as $key => $record) {
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foreach ($coll as $k => $related) {
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if ($related[$foreign] == $record[$local]) {
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$this->data[$key]->setRelated($name, $related);
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}
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}
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}
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} elseif ($rel instanceof Doctrine_Relation_ForeignKey) {
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foreach ($this->data as $key => $record) {
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if ( ! $record->exists()) {
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continue;
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}
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$sub = new Doctrine_Collection($table);
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foreach ($coll as $k => $related) {
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if ($related[$foreign] == $record[$local]) {
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$sub->add($related);
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$coll->remove($k);
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}
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}
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$this->data[$key]->setRelated($name, $sub);
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}
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} elseif ($rel instanceof Doctrine_Relation_Association) {
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$identifier = $this->_table->getIdentifier();
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$asf = $rel->getAssociationFactory();
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$name = $table->getComponentName();
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foreach ($this->data as $key => $record) {
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if ( ! $record->exists()) {
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continue;
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}
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$sub = new Doctrine_Collection($table);
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foreach ($coll as $k => $related) {
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if ($related->get($local) == $record[$identifier]) {
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$sub->add($related->get($name));
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}
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}
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$this->data[$key]->setRelated($name, $sub);
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}
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}
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}
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/**
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* getNormalIterator
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* returns normal iterator - an iterator that will not expand this collection
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*
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* @return Doctrine_Iterator_Normal
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*/
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public function getNormalIterator()
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{
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return new Doctrine_Collection_Iterator_Normal($this);
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}
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/**
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* takeSnapshot
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* takes a snapshot from this collection
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*
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* snapshots are used for diff processing, for example
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* when a fetched collection has three elements, then two of those
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* are being removed the diff would contain one element
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*
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* Doctrine_Collection::save() attaches the diff with the help of last
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* snapshot.
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*
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* @return Doctrine_Collection
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*/
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public function takeSnapshot()
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{
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$this->_snapshot = $this->data;
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return $this;
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}
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/**
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* getSnapshot
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* returns the data of the last snapshot
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*
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* @return array returns the data in last snapshot
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*/
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public function getSnapshot()
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{
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return $this->_snapshot;
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}
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/**
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* processDiff
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* processes the difference of the last snapshot and the current data
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*
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* an example:
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* Snapshot with the objects 1, 2 and 4
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* Current data with objects 2, 3 and 5
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*
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* The process would remove object 4
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*
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* @return Doctrine_Collection
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*/
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public function processDiff()
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{
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foreach (array_diff($this->_snapshot, $this->data) as $record) {
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$record->delete();
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}
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return $this;
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}
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public function getDeleteDiff()
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{
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return array_diff($this->_snapshot, $this->data);
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}
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public function getInsertDiff()
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{
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return array_diff($this->data, $this->_snapshot);
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}
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/**
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* save
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* saves all records of this collection and processes the
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* difference of the last snapshot and the current data
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*
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* @param Doctrine_Connection $conn optional connection parameter
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* @return Doctrine_Collection
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*/
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public function save(Doctrine_Connection $conn = null)
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{
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if ($conn == null) {
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$conn = $this->_table->getConnection();
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}
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$conn->beginTransaction();
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$conn->transaction->addCollection($this);
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$this->processDiff();
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foreach ($this->getData() as $key => $record) {
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$record->save($conn);
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}
|
|
|
|
$conn->commit();
|
|
|
|
return $this;
|
|
}
|
|
/**
|
|
* delete
|
|
* single shot delete
|
|
* deletes all records from this collection
|
|
* and uses only one database query to perform this operation
|
|
*
|
|
* @return Doctrine_Collection
|
|
*/
|
|
public function delete(Doctrine_Connection $conn = null)
|
|
{
|
|
if ($conn == null) {
|
|
$conn = $this->_table->getConnection();
|
|
}
|
|
|
|
$conn->beginTransaction();
|
|
$conn->transaction->addCollection($this);
|
|
|
|
foreach ($this as $key => $record) {
|
|
$record->delete($conn);
|
|
}
|
|
|
|
$conn->commit();
|
|
|
|
$this->data = array();
|
|
|
|
return $this;
|
|
}
|
|
/**
|
|
* getIterator
|
|
* @return object ArrayIterator
|
|
*/
|
|
public function getIterator()
|
|
{
|
|
$data = $this->data;
|
|
return new ArrayIterator($data);
|
|
}
|
|
/**
|
|
* returns a string representation of this object
|
|
*/
|
|
public function __toString()
|
|
{
|
|
return Doctrine_Lib::getCollectionAsString($this);
|
|
}
|
|
}
|