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Commit de324222 authored by zYne's avatar zYne
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lib/Doctrine/Relation/Parser.php 0 → 100644
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<?php
/*
* $Id: Table.php 1397 2007-05-19 19:54:15Z zYne $
*
* 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_Parser
*
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @package Doctrine
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @version $Revision: 1397 $
* @category Object Relational Mapping
* @link www.phpdoctrine.com
* @since 1.0
*/
class Doctrine_Relation_Parser
{
/**
* @var Doctrine_Table $_table the table object this parser belongs to
*/
protected $_table;
/**
* @var array $_relations an array containing all the Doctrine_Relation objects for this table
*/
protected $_relations = array();
/**
* @var array $_bound bound relations
*/
protected $_bound = array();
/**
* @var array $_boundAliases bound relation aliases
*/
protected $_boundAliases = array();
/**
* constructor
*
* @param Doctrine_Table $table the table object this parser belongs to
*/
public function __construct(Doctrine_Table $table)
{
$this->_table = $table;
}
/**
* getTable
*
* @return Doctrine_Table the table object this parser belongs to
*/
public function getTable()
{
return $this->_table;
}
/**
* binds a relation
*
* @param string $name
* @param string $field
* @return void
*/
public function bind($name, $field, $type, $options = null)
{
if (isset($this->relations[$name])) {
unset($this->relations[$name]);
}
$lower = strtolower($name);
if (isset($this->columns[$lower])) {
throw new Doctrine_Table_Exception("Couldn't bind relation. Column with name " . $lower . ' already exists!');
}
$e = explode(' as ', $name);
$name = $e[0];
if (isset($e[1])) {
$alias = $e[1];
$this->boundAliases[$name] = $alias;
} else {
$alias = $name;
}
$this->bound[$alias] = array('field' => $field,
'type' => $type,
'class' => $name,
'alias' => $alias);
if ($options !== null) {
$opt = array();
if (is_string($options)) {
$opt['local'] = $options;
} else {
$opt = (array) $options;
}
$this->bound[$alias] = array_merge($this->bound[$alias], $opt);
}
}
/**
* getRelation
*
* @param string $name component name of which a foreign key object is bound
* @return Doctrine_Relation
*/
public function getRelation($name, $recursive = true)
{
if (isset($this->relations[$name])) {
return $this->relations[$name];
}
if ( ! $this->conn->hasTable($this->options['name'])) {
$allowExport = true;
} else {
$allowExport = false;
}
if (isset($this->bound[$name])) {
$definition = $this->bound[$name];
list($component, $tmp) = explode('.', $definition['field']);
if ( ! isset($definition['foreign'])) {
$definition['foreign'] = $tmp;
}
unset($definition['field']);
$definition['table'] = $this->conn->getTable($definition['class'], $allowExport);
$definition['constraint'] = false;
if ($component == $this->options['name'] || in_array($component, $this->options['parents'])) {
// ONE-TO-ONE
if ($definition['type'] == Doctrine_Relation::ONE_COMPOSITE ||
$definition['type'] == Doctrine_Relation::ONE_AGGREGATE) {
// tree structure parent relation found
if ( ! isset($definition['local'])) {
$definition['local'] = $definition['foreign'];
$definition['foreign'] = $definition['table']->getIdentifier();
}
$relation = new Doctrine_Relation_LocalKey($definition);
} else {
// tree structure children relation found
if ( ! isset($definition['local'])) {
$tmp = $definition['table']->getIdentifier();
$definition['local'] = $tmp;
}
//$definition['foreign'] = $tmp;
$definition['constraint'] = true;
$relation = new Doctrine_Relation_ForeignKey($definition);
}
} elseif ($component == $definition['class'] ||
($component == $definition['alias'])) { // && ($name == $this->options['name'] || in_array($name,$this->parents))
if ( ! isset($defintion['local'])) {
$definition['local'] = $this->identifier;
}
$definition['constraint'] = true;
// ONE-TO-MANY or ONE-TO-ONE
$relation = new Doctrine_Relation_ForeignKey($definition);
} else {
// MANY-TO-MANY
// only aggregate relations allowed
if ($definition['type'] != Doctrine_Relation::MANY_AGGREGATE) {
throw new Doctrine_Table_Exception("Only aggregate relations are allowed for many-to-many relations");
}
$classes = array_merge($this->options['parents'], array($this->options['name']));
foreach (array_reverse($classes) as $class) {
try {
$bound = $definition['table']->getBoundForName($class, $component);
break;
} catch(Doctrine_Table_Exception $exc) { }
}
if ( ! isset($bound)) {
throw new Doctrine_Table_Exception("Couldn't map many-to-many relation for "
. $this->options['name'] . " and $name. Components use different join tables.");
}
if ( ! isset($definition['local'])) {
$definition['local'] = $this->identifier;
}
$e2 = explode('.', $bound['field']);
$fields = explode('-', $e2[1]);
if ($e2[0] != $component) {
throw new Doctrine_Table_Exception($e2[0] . ' doesn\'t match ' . $component);
}
$associationTable = $this->conn->getTable($e2[0], $allowExport);
if (count($fields) > 1) {
// SELF-REFERENCING THROUGH JOIN TABLE
$def['table'] = $associationTable;
$def['local'] = $this->identifier;
$def['foreign'] = $fields[0];
$def['alias'] = $e2[0];
$def['class'] = $e2[0];
$def['type'] = Doctrine_Relation::MANY_COMPOSITE;
$this->relations[$e2[0]] = new Doctrine_Relation_ForeignKey($def);
$definition['assocTable'] = $associationTable;
$definition['local'] = $fields[0];
$definition['foreign'] = $fields[1];
$relation = new Doctrine_Relation_Association_Self($definition);
} else {
if($definition['table'] === $this) {
} else {
// auto initialize a new one-to-one relationships for association table
$associationTable->bind($this->getComponentName(),
$associationTable->getComponentName(). '.' . $e2[1],
Doctrine_Relation::ONE_AGGREGATE
);
$associationTable->bind($definition['table']->getComponentName(),
$associationTable->getComponentName(). '.' . $definition['foreign'],
Doctrine_Relation::ONE_AGGREGATE
);
// NORMAL MANY-TO-MANY RELATIONSHIP
$def['table'] = $associationTable;
$def['foreign'] = $e2[1];
$def['local'] = $definition['local'];
$def['alias'] = $e2[0];
$def['class'] = $e2[0];
$def['type'] = Doctrine_Relation::MANY_COMPOSITE;
$this->relations[$e2[0]] = new Doctrine_Relation_ForeignKey($def);
$definition['local'] = $e2[1];
$definition['assocTable'] = $associationTable;
$relation = new Doctrine_Relation_Association($definition);
}
}
}
$this->relations[$name] = $relation;
return $this->relations[$name];
}
// load all relations
$this->getRelations();
if ($recursive) {
return $this->getRelation($name, false);
} else {
throw new Doctrine_Table_Exception($this->options['name'] . " doesn't have a relation to " . $name);
}
}
}
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