package org.w3c.ddr.simple;
import java.util.Properties;
import org.w3c.ddr.simple.exception.InitializationException;
import org.w3c.ddr.simple.exception.NameException;
import org.w3c.ddr.simple.exception.SystemException;
/**
* This factory creates a DDR Service instance.
*
*
NOTE: This class is provided as part of the Java binding
* of the API, and is not part of the API definition itself.
*
* @author Jo Rabin (dotMobi)
* @author
Jose Manuel Cantera Fonseca (Telefonica I+D)
* @author
Rotan Hanrahan (MobileAware)
* @author
Ignacio Marin (Fundacion CTIC)
Copyright
* © 2008 W3C® (MIT, ERCIM, Keio), All Rights Reserved.
* W3C liability,
* trademark
* and document
* use rules apply.
*
*/
public class ServiceFactory {
/**
*
* Factory method for creating a new Service instance.
*
* @param clazz
* Class identifier
* @param defaultVocabulary
* Passed to the Service.initialize method.
* @param configuration
* Passed to the Service.initialize method.
* @return A service instance with which to access a Device Description Repository.
* @throws InitializationException
* @throws NameException
*/
public static Service newService(String clazz, String defaultVocabulary,
Properties configuration) throws InitializationException,
NameException {
Service theService = null;
if (clazz == null) {
throw new SystemException(SystemException.ILLEGAL_ARGUMENT,
"Service class cannot be null");
}
if (defaultVocabulary == null) {
throw new SystemException(SystemException.ILLEGAL_ARGUMENT,
"Default vocabulary cannot be null");
}
try {
// Instantiation
theService = (Service) Class.forName(clazz).newInstance();
} catch (IllegalAccessException e) {
throw new InitializationException(InitializationException.INITIALIZATION_ERROR, e);
} catch (ClassNotFoundException e) {
throw new InitializationException(InitializationException.INITIALIZATION_ERROR, e);
} catch (Throwable thr) {
throw new SystemException(SystemException.CANNOT_PROCEED, thr);
}
// Initialization
theService.initialize(defaultVocabulary, configuration);
return theService;
}
}