2008-02-04 00:29:57 +03:00
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<?php
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2008-02-11 20:08:22 +03:00
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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.org>.
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*/
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2008-02-04 00:29:57 +03:00
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/**
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2008-02-11 20:08:22 +03:00
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* The metadata factory is used to create ClassMetadata objects that contain all the
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* metadata of a class.
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2008-02-04 00:29:57 +03:00
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*
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* @package Doctrine
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2008-02-11 20:08:22 +03:00
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* @since 1.0
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2008-02-04 00:29:57 +03:00
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*/
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class Doctrine_ClassMetadata_Factory
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{
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protected $_conn;
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protected $_driver;
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/**
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2008-02-11 20:08:22 +03:00
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* The already loaded metadata objects.
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2008-02-04 00:29:57 +03:00
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*/
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protected $_loadedMetadata = array();
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2008-02-11 20:08:22 +03:00
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/**
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* Constructor.
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* Creates a new factory instance that uses the given connection and metadata driver
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* implementations.
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*
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* @param $conn The connection to use.
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* @param $driver The metadata driver to use.
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*/
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2008-02-04 00:29:57 +03:00
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public function __construct(Doctrine_Connection $conn, $driver)
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{
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$this->_conn = $conn;
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$this->_driver = $driver;
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}
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/**
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* Returns the metadata object for a class.
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*
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* @param string $className The name of the class.
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* @return Doctrine_Metadata
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*/
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public function getMetadataFor($className)
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{
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if (isset($this->_loadedMetadata[$className])) {
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return $this->_loadedMetadata[$className];
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}
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$this->_loadClasses($className, $this->_loadedMetadata);
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return $this->_loadedMetadata[$className];
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}
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/**
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* Loads the metadata of the class in question and all it's ancestors whose metadata
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* is still not loaded.
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*
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* @param string $name The name of the class for which the metadata should get loaded.
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* @param array $tables The metadata collection to which the loaded metadata is added.
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*/
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protected function _loadClasses($name, array &$classes)
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{
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$parentClass = $name;
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$parentClasses = array();
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$loadedParentClass = false;
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while ($parentClass = get_parent_class($parentClass)) {
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if ($parentClass == 'Doctrine_Record') {
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break;
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}
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if (isset($classes[$parentClass])) {
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$loadedParentClass = $parentClass;
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break;
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}
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$parentClasses[] = $parentClass;
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}
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$parentClasses = array_reverse($parentClasses);
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$parentClasses[] = $name;
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if ($loadedParentClass) {
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$class = $classes[$loadedParentClass];
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} else {
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$rootClassOfHierarchy = count($parentClasses) > 0 ? array_shift($parentClasses) : $name;
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$class = new Doctrine_ClassMetadata($rootClassOfHierarchy, $this->_conn);
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$this->_loadMetadata($class, $rootClassOfHierarchy);
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$classes[$rootClassOfHierarchy] = $class;
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}
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if (count($parentClasses) == 0) {
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return $class;
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}
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// load metadata of subclasses
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// -> child1 -> child2 -> $name
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$parent = $class;
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foreach ($parentClasses as $subclassName) {
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$subClass = new Doctrine_ClassMetadata($subclassName, $this->_conn);
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$subClass->setInheritanceType($parent->getInheritanceType(), $parent->getInheritanceOptions());
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$this->_addInheritedFields($subClass, $parent);
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$this->_addInheritedRelations($subClass, $parent);
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$this->_loadMetadata($subClass, $subclassName);
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if ($parent->getInheritanceType() == Doctrine::INHERITANCETYPE_SINGLE_TABLE) {
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$subClass->setTableName($parent->getTableName());
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}
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$classes[$subclassName] = $subClass;
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$parent = $subClass;
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}
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}
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protected function _addInheritedFields($subClass, $parentClass)
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{
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foreach ($parentClass->getColumns() as $name => $definition) {
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$fullName = "$name as " . $parentClass->getFieldName($name);
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$definition['inherited'] = true;
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2008-02-16 22:10:16 +03:00
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$subClass->mapColumn($fullName, $definition['type'], $definition['length'],
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2008-02-04 00:29:57 +03:00
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$definition);
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}
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}
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protected function _addInheritedRelations($subClass, $parentClass) {
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foreach ($parentClass->getRelationParser()->getRelations() as $name => $relation) {
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$subClass->getRelationParser()->addRelation($name, $relation);
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}
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}
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/**
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* Current code driver.
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*/
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protected function _loadMetadata(Doctrine_ClassMetadata $class, $name)
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{
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if ( ! class_exists($name) || empty($name)) {
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/*try {
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throw new Exception();
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} catch (Exception $e) {
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echo $e->getTraceAsString();
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}*/
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throw new Doctrine_Exception("Couldn't find class " . $name . ".");
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}
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$names = array();
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$className = $name;
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// get parent classes
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do {
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if ($className === 'Doctrine_Record') {
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break;
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} else if ($className == $name) {
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continue;
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}
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$names[] = $className;
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} while ($className = get_parent_class($className));
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if ($className === false) {
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2008-02-20 23:54:20 +03:00
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try {
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throw new Exception();
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} catch (Exception $e) {
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echo $e->getTraceAsString() . "<br />";
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}
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2008-02-04 00:29:57 +03:00
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throw new Doctrine_ClassMetadata_Factory_Exception("Unknown component '$className'.");
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}
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// save parents
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2008-02-11 20:08:22 +03:00
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$class->setParentClasses($names);
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2008-02-04 00:29:57 +03:00
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// load further metadata
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$this->_driver->loadMetadataForClass($name, $class);
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$tableName = $class->getTableName();
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if ( ! isset($tableName)) {
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$class->setTableName(Doctrine::tableize($class->getClassName()));
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}
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$this->_initIdentifier($class);
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return $class;
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}
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/**
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* Code driver.
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*
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* @todo Move to code driver.
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*/
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/*protected function _loadMetadataFromCode($class, $name)
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{
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call_user_func_array(array($name, 'initMetadata'), array($class));
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}*/
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/**
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* Initializes the class identifier(s)/primary key(s).
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*
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* @param Doctrine_Metadata The metadata container of the class in question.
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*/
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protected function _initIdentifier(Doctrine_ClassMetadata $class)
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{
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2008-02-24 23:31:49 +03:00
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switch (count((array)$class->getIdentifier())) {
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2008-02-04 00:29:57 +03:00
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case 0:
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if ($class->getInheritanceType() == Doctrine::INHERITANCETYPE_JOINED &&
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count($class->getOption('parents')) > 0) {
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$parents = $class->getOption('parents');
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$root = end($parents);
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$rootClass = $class->getConnection()->getMetadata($root);
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$class->setIdentifier($rootClass->getIdentifier());
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if ($class->getIdentifierType() !== Doctrine::IDENTIFIER_AUTOINC) {
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$class->setIdentifierType($rootClass->getIdentifierType());
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} else {
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$class->setIdentifierType(Doctrine::IDENTIFIER_NATURAL);
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}
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// add all inherited primary keys
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foreach ((array) $class->getIdentifier() as $id) {
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$definition = $rootClass->getDefinitionOf($id);
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// inherited primary keys shouldn't contain autoinc
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// and sequence definitions
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unset($definition['autoincrement']);
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unset($definition['sequence']);
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// add the inherited primary key column
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$fullName = $rootClass->getColumnName($id) . ' as ' . $id;
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$class->setColumn($fullName, $definition['type'], $definition['length'],
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$definition, true);
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}
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} else {
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$definition = array('type' => 'integer',
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'length' => 20,
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'autoincrement' => true,
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'primary' => true);
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$class->setColumn('id', $definition['type'], $definition['length'], $definition, true);
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2008-02-24 23:31:49 +03:00
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$class->setIdentifier(array('id'));
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2008-02-04 00:29:57 +03:00
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$class->setIdentifierType(Doctrine::IDENTIFIER_AUTOINC);
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}
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break;
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case 1:
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2008-02-24 23:31:49 +03:00
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foreach ((array)$class->getIdentifier() as $pk) {
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2008-02-04 00:29:57 +03:00
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$columnName = $class->getColumnName($pk);
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$thisColumns = $class->getColumns();
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$e = $thisColumns[$columnName];
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$found = false;
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foreach ($e as $option => $value) {
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if ($found) {
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break;
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}
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$e2 = explode(':', $option);
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switch (strtolower($e2[0])) {
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case 'autoincrement':
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case 'autoinc':
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$class->setIdentifierType(Doctrine::IDENTIFIER_AUTOINC);
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$found = true;
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break;
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case 'seq':
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case 'sequence':
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$class->setIdentifierType(Doctrine::IDENTIFIER_SEQUENCE);
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$found = true;
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if ($value) {
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2008-02-11 20:08:22 +03:00
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$class->setTableOption('sequenceName', $value);
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2008-02-04 00:29:57 +03:00
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} else {
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if (($sequence = $class->getAttribute(Doctrine::ATTR_DEFAULT_SEQUENCE)) !== null) {
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2008-02-11 20:08:22 +03:00
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$class->setTableOption('sequenceName', $sequence);
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2008-02-04 00:29:57 +03:00
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} else {
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2008-02-11 20:08:22 +03:00
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$class->setTableOption('sequenceName', $class->getConnection()
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->getSequenceName($class->getTableName()));
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2008-02-04 00:29:57 +03:00
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}
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}
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break;
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}
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}
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$identifierType = $class->getIdentifierType();
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if ( ! isset($identifierType)) {
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$class->setIdentifierType(Doctrine::IDENTIFIER_NATURAL);
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}
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}
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2008-02-24 23:31:49 +03:00
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$class->setIdentifier(array($pk));
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2008-02-04 00:29:57 +03:00
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break;
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default:
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$class->setIdentifierType(Doctrine::IDENTIFIER_COMPOSITE);
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}
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}
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}
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