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<?php
/**
* EasyRdf
*
* LICENSE
*
* Copyright (c) 2009-2010 Nicholas J Humfrey. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author 'Nicholas J Humfrey" may be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* 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.
*
* @package EasyRdf
* @copyright Copyright (c) 2009-2010 Nicholas J Humfrey
* @license http://www.opensource.org/licenses/bsd-license.php
* @version $Id$
*/
/**
* Class to map between RDF Types and PHP Classes
*
* @package EasyRdf
* @copyright Copyright (c) 2009-2010 Nicholas J Humfrey
* @license http://www.opensource.org/licenses/bsd-license.php
*/
class EasyRdf_TypeMapper
{
/** The type map registry */
private static $map = array();
/** Get the registered class for an RDF type
*
* If a type is not registered, then this method will return null.
*
* @param string $type The RDF type (e.g. foaf:Person)
* @return string The class name (e.g. Model_Foaf_Name)
*/
public static function get($type)
{
if (!is_string($type) or $type == null or $type == '') {
throw new InvalidArgumentException(
"\$type should be a string and cannot be null or empty"
);
}
$type = EasyRdf_Namespace::expand($type);
if (array_key_exists($type, self::$map)) {
return self::$map[$type];
} else {
return null;
}
}
/** Register an RDF type with a PHP Class name
*
* @param string $type The RDF type (e.g. foaf:Person)
* @param string $class The PHP class name (e.g. Model_Foaf_Name)
* @return string The PHP class name
*/
public static function set($type, $class)
{
if (!is_string($type) or $type == null or $type == '') {
throw new InvalidArgumentException(
"\$type should be a string and cannot be null or empty"
);
}
if (!is_string($class) or $class == null or $class == '') {
throw new InvalidArgumentException(
"\$class should be a string and cannot be null or empty"
);
}
$type = EasyRdf_Namespace::expand($type);
return self::$map[$type] = $class;
}
/**
* Delete an existing RDF type mapping.
*
* @param string $type The RDF type (e.g. foaf:Person)
*/
public static function delete($type)
{
if (!is_string($type) or $type == null or $type == '') {
throw new InvalidArgumentException(
"\$type should be a string and cannot be null or empty"
);
}
$type = EasyRdf_Namespace::expand($type);
if (isset(self::$map[$type])) {
unset(self::$map[$type]);
}
}
}