269 lines
8.8 KiB
PHP
269 lines
8.8 KiB
PHP
<?php
|
|
/*
|
|
* $Id$
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* This software consists of voluntary contributions made by many individuals
|
|
* and is licensed under the LGPL. For more information, see
|
|
* <http://www.phpdoctrine.com>.
|
|
*/
|
|
/**
|
|
* Doctrine_Relation
|
|
* This class represents a relation between components
|
|
*
|
|
* @package Doctrine
|
|
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
|
|
* @category Object Relational Mapping
|
|
* @link www.phpdoctrine.com
|
|
* @since 1.0
|
|
* @version $Revision$
|
|
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
|
|
*/
|
|
abstract class Doctrine_Relation
|
|
{
|
|
/**
|
|
* RELATION CONSTANTS
|
|
*/
|
|
|
|
/**
|
|
* constant for ONE_TO_ONE and MANY_TO_ONE aggregate relationships
|
|
*/
|
|
const ONE_AGGREGATE = 0;
|
|
/**
|
|
* constant for ONE_TO_ONE and MANY_TO_ONE composite relationships
|
|
*/
|
|
const ONE_COMPOSITE = 1;
|
|
/**
|
|
* constant for MANY_TO_MANY and ONE_TO_MANY aggregate relationships
|
|
*/
|
|
const MANY_AGGREGATE = 2;
|
|
/**
|
|
* constant for MANY_TO_MANY and ONE_TO_MANY composite relationships
|
|
*/
|
|
const MANY_COMPOSITE = 3;
|
|
|
|
const ONE = 0;
|
|
const MANY = 1;
|
|
|
|
protected $definition = array('alias' => true,
|
|
'foreign' => true,
|
|
'local' => true,
|
|
'class' => true,
|
|
'type' => true,
|
|
'name' => false,
|
|
'assocTable' => false,
|
|
'onDelete' => false,
|
|
'onUpdate' => false,
|
|
'deferred' => false,
|
|
'constraint' => false,
|
|
);
|
|
/**
|
|
* constructor
|
|
*
|
|
* @param array $definition an associative array with the following structure:
|
|
* name foreign key constraint name
|
|
*
|
|
* local the local field(s)
|
|
*
|
|
* foreign the foreign reference field(s)
|
|
*
|
|
* table the foreign table object
|
|
*
|
|
* assocTable the association table object (if any)
|
|
*
|
|
* onDelete referential delete action
|
|
*
|
|
* onUpdate referential update action
|
|
*
|
|
* deferred deferred constraint checking
|
|
*
|
|
* alias relation alias
|
|
*
|
|
* type the relation type, either Doctrine_Relation::ONE or Doctrine_Relation::MANY
|
|
*
|
|
* constraint boolean value, true if the relation needs referential integrity constraint
|
|
*
|
|
* The onDelete and onUpdate keys accept the following values:
|
|
*
|
|
* CASCADE: Delete or update the row from the parent table and automatically delete or
|
|
* update the matching rows in the child table. Both ON DELETE CASCADE and ON UPDATE CASCADE are supported.
|
|
* Between two tables, you should not define several ON UPDATE CASCADE clauses that act on the same column
|
|
* in the parent table or in the child table.
|
|
*
|
|
* SET NULL: Delete or update the row from the parent table and set the foreign key column or columns in the
|
|
* child table to NULL. This is valid only if the foreign key columns do not have the NOT NULL qualifier
|
|
* specified. Both ON DELETE SET NULL and ON UPDATE SET NULL clauses are supported.
|
|
*
|
|
* NO ACTION: In standard SQL, NO ACTION means no action in the sense that an attempt to delete or update a primary
|
|
* key value is not allowed to proceed if there is a related foreign key value in the referenced table.
|
|
*
|
|
* RESTRICT: Rejects the delete or update operation for the parent table. NO ACTION and RESTRICT are the same as
|
|
* omitting the ON DELETE or ON UPDATE clause.
|
|
*
|
|
* SET DEFAULT
|
|
*/
|
|
public function __construct(array $definition)
|
|
{
|
|
$def = array();
|
|
foreach ($this->definition as $key => $val) {
|
|
if ( ! isset($definition[$key]) && $val) {
|
|
throw new Doctrine_Exception($key . ' is required!');
|
|
}
|
|
if (isset($definition[$key])) {
|
|
$def[$key] = $definition[$key];
|
|
} else {
|
|
$def[$key] = null;
|
|
}
|
|
}
|
|
|
|
$this->definition = $def;
|
|
}
|
|
/**
|
|
* toArray
|
|
*
|
|
* @return array
|
|
*/
|
|
public function toArray()
|
|
{
|
|
return $this->definition;
|
|
}
|
|
/**
|
|
* hasConstraint
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function hasConstraint()
|
|
{
|
|
return $this->definition['constraint'];
|
|
}
|
|
/**
|
|
* getAlias
|
|
* returns the relation alias
|
|
*
|
|
* @return string
|
|
*/
|
|
final public function getAlias()
|
|
{
|
|
return $this->definition['alias'];
|
|
}
|
|
/**
|
|
* getType
|
|
* returns the relation type, either 0 or 1
|
|
*
|
|
* @see Doctrine_Relation MANY_* and ONE_* constants
|
|
* @return integer
|
|
*/
|
|
final public function getType()
|
|
{
|
|
return $this->definition['type'];
|
|
}
|
|
/**
|
|
* getTable
|
|
* returns the foreign table object
|
|
*
|
|
* @return object Doctrine_Table
|
|
*/
|
|
final public function getTable()
|
|
{
|
|
return Doctrine_Manager::getInstance()
|
|
->getConnectionForComponent($this->definition['class'])
|
|
->getTable($this->definition['class']);
|
|
}
|
|
/**
|
|
* getLocal
|
|
* returns the name of the local column
|
|
*
|
|
* @return string
|
|
*/
|
|
final public function getLocal()
|
|
{
|
|
return $this->definition['local'];
|
|
}
|
|
/**
|
|
* getForeign
|
|
* returns the name of the foreignkey column where
|
|
* the localkey column is pointing at
|
|
*
|
|
* @return string
|
|
*/
|
|
final public function getForeign()
|
|
{
|
|
return $this->definition['foreign'];
|
|
}
|
|
/**
|
|
* isComposite
|
|
* returns whether or not this relation is a composite relation
|
|
*
|
|
* @return boolean
|
|
*/
|
|
final public function isComposite()
|
|
{
|
|
return ($this->definition['type'] == Doctrine_Relation::ONE_COMPOSITE ||
|
|
$this->definition['type'] == Doctrine_Relation::MANY_COMPOSITE);
|
|
}
|
|
/**
|
|
* isOneToOne
|
|
* returns whether or not this relation is a one-to-one relation
|
|
*
|
|
* @return boolean
|
|
*/
|
|
final public function isOneToOne()
|
|
{
|
|
return ($this->definition['type'] == Doctrine_Relation::ONE_AGGREGATE ||
|
|
$this->definition['type'] == Doctrine_Relation::ONE_COMPOSITE);
|
|
}
|
|
/**
|
|
* getRelationDql
|
|
*
|
|
* @param integer $count
|
|
* @return string
|
|
*/
|
|
public function getRelationDql($count)
|
|
{
|
|
$component = $this->getTable()->getComponentName();
|
|
|
|
$dql = 'FROM ' . $component
|
|
. ' WHERE ' . $component . '.' . $this->definition['foreign']
|
|
. ' IN (' . substr(str_repeat('?, ', $count), 0, -2) . ')';
|
|
|
|
return $dql;
|
|
}
|
|
/**
|
|
* fetchRelatedFor
|
|
*
|
|
* fetches a component related to given record
|
|
*
|
|
* @param Doctrine_Record $record
|
|
* @return Doctrine_Record|Doctrine_Collection
|
|
*/
|
|
abstract public function fetchRelatedFor(Doctrine_Record $record);
|
|
/**
|
|
* __toString
|
|
*
|
|
* @return string
|
|
*/
|
|
public function __toString()
|
|
{
|
|
$r[] = "<pre>";
|
|
foreach ($this->definition as $k => $v) {
|
|
if(is_object($v)) {
|
|
$v = 'Object(' . get_class($v) . ')';
|
|
}
|
|
$r[] = $k . ' : ' . $v;
|
|
}
|
|
$r[] = "</pre>";
|
|
return implode("\n", $r);
|
|
}
|
|
}
|