/*
* Copyright 2003 Federal Chancellery Austria
* MOA-SPSS has been developed in a cooperation between BRZ, the Federal
* Chancellery Austria - ICT staff unit, and Graz University of Technology.
*
* Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
* the European Commission - subsequent versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
* http://www.osor.eu/eupl/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the Licence is distributed on an "AS IS" basis,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the Licence for the specific language governing permissions and
* limitations under the Licence.
*
* This product combines work with different licenses. See the "NOTICE" text
* file for details on the various modules and licenses.
* The "NOTICE" text file is part of the distribution. Any derivative works
* that you distribute must include a readable copy of the "NOTICE" text file.
*/
package at.gv.egovernment.moa.spss.api;
import at.gv.egovernment.moa.spss.MOAException;
import at.gv.egovernment.moa.spss.server.init.ConfiguratorImpl;
/**
* Configures the SP/SS API.
*
* Also handles dynamic configuration updates.
*
* @author Patrick Peck
* @version $Id$
*/
public abstract class Configurator {
/** The default implementation class. */
private static final String DEFAULT_IMPLEMENTATION =
"at.gv.egovernment.moa.spss.server.init.ConfiguratorImpl";
/** The single instance of this class. */
private static Configurator instance = null;
public static synchronized Configurator getInstance() {
if (instance == null) {
try {
/*DiscoverClass discover = new DiscoverClass();
instance =
(Configurator) discover.newInstance(
Configurator.class,
DEFAULT_IMPLEMENTATION);*/
instance = new ConfiguratorImpl();
} catch (Exception e) {
// this can not happen since we provide a valid default
// implementation
}
}
return instance;
}
/**
* Initialize the SP/SS configuration.
*
* Only a single call to this method will have an effect. Use
* update()
for reflecting changes in the configuration instead.
*
* @throws MOAException An error occurred updating the SP/SS configuration.
*/
public abstract void init() throws MOAException;
/**
* Update the SP/SS configuration.
*
* This will only have an effect after the system has been initialized once
* using init()
.
*
* @throws MOAException An error occurred updating the SP/SS configuration.
*/
public abstract void update() throws MOAException;
}