File io/db/dbms/Doctrine/DBAL/Types/Type.php
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<?php
/**
* The base class for so-called Doctrine mapping types.
* A Type object is obtained by calling the static {@link getType()} method.
* @package Doctrine
* @subpackage DBAL\Types
* @license https://www.gnu.org/licenses/lgpl-2.1.fr.html LGPL 2.1
* @link https://www.doctrine-project.org
* @author Roman Borschel <roman@code-factory.org>
* @version PHPBoost 5.2 - last update: 2013 01 01
* @since PHPBoost 4.0 - 2013 01 01
*/
abstract class Type
{
/* The following constants represent type codes and mirror the PDO::PARAM_X constants
* to decouple ourself from PDO.
*/
const CODE_BOOL = 5;
const CODE_NULL = 0;
const CODE_INT = 1;
const CODE_STR = 2;
const CODE_LOB = 3;
/** Map of already instantiated type objects. One instance per type (flyweight). */
protected static $_typeObjects = array();
/** The map of supported doctrine mapping types. */
private static $_typesMap = array(
'array' => 'ArrayType',
'object' => 'ObjectType',
'boolean' => 'BooleanType',
'integer' => 'IntegerType',
'int' => 'IntegerType',
'smallint' => 'SmallIntType',
'bigint' => 'BigIntType',
'string' => 'StringType',
'text' => 'TextType',
'datetime' => 'DateTimeType',
'date' => 'DateType',
'time' => 'TimeType',
'decimal' => 'DecimalType',
'double' => 'DoubleType',
'float' => 'FloatType',
);
/* Prevent instantiation and force use of the factory method. */
protected function __construct() {}
/**
* Converts a value from its PHP representation to its database representation
* of this type.
*
* @param mixed $value The value to convert.
* @param AbstractPlatform $platform The currently used database platform.
* @return mixed The database representation of the value.
*/
public function convertToDatabaseValue($value, AbstractPlatform $platform)
{
return $value;
}
/**
* Converts a value from its database representation to its PHP representation
* of this type.
*
* @param mixed $value The value to convert.
* @param AbstractPlatform $platform The currently used database platform.
* @return mixed The PHP representation of the value.
*/
public function convertToPHPValue($value, AbstractPlatform $platform)
{
return $value;
}
/**
* Gets the default length of this type.
*
* @todo Needed?
*/
public function getDefaultLength(AbstractPlatform $platform)
{
return null;
}
/**
* Gets the SQL declaration snippet for a field of this type.
*
* @param array $fieldDeclaration The field declaration.
* @param AbstractPlatform $platform The currently used database platform.
*/
abstract public function getSqlDeclaration(array $fieldDeclaration, AbstractPlatform $platform);
/**
* Gets the name of this type.
*
* @return string
* @todo Needed?
*/
abstract public function getName();
/**
* Gets the type code of this type.
*
* @return integer
*/
public function getTypeCode()
{
return self::CODE_STR;
}
/**
* Factory method to create type instances.
* Type instances are implemented as flyweights.
*
* @static
* @param string $name The name of the type (as returned by getName()).
* @return Doctrine\DBAL\Types\Type
*/
public static function getType($name)
{
if ( ! isset(self::$_typeObjects[$name])) {
if ( ! isset(self::$_typesMap[$name])) {
throw DoctrineException::unknownColumnType($name);
}
self::$_typeObjects[$name] = new self::$_typesMap[$name]();
}
return self::$_typeObjects[$name];
}
/**
* Adds a custom type to the type map.
*
* @static
* @param string $name Name of the type. This should correspond to what
* getName() returns.
* @param string $className The class name of the custom type.
* @throws DoctrineException
*/
public static function addType($name, $className)
{
if (isset(self::$_typesMap[$name])) {
throw DoctrineException::typeExists($name);
}
self::$_typesMap[$name] = $className;
}
/**
* Checks if exists support for a type.
*
* @static
* @param string $name Name of the type
* @return boolean TRUE if type is supported; FALSE otherwise
*/
public static function hasType($name)
{
return isset(self::$_typesMap[$name]);
}
/**
* Overrides an already defined type to use a different implementation.
*
* @static
* @param string $name
* @param string $className
* @throws DoctrineException
*/
public static function overrideType($name, $className)
{
if ( ! isset(self::$_typesMap[$name])) {
throw DoctrineException::typeNotFound($name);
}
self::$_typesMap[$name] = $className;
}
}
?>