org.voltdb.importer.formatter.AbstractFormatterFactory Maven / Gradle / Ivy
/* This file is part of VoltDB.
* Copyright (C) 2008-2020 VoltDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with VoltDB. If not, see .
*/
package org.voltdb.importer.formatter;
import java.util.Properties;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
/**
* Factory class that formatter bundles should extend, extending classes
* should implement a create method to construct the class that implements Formatter.
*/
public abstract class AbstractFormatterFactory implements BundleActivator {
/**
* Registers this as an OSGi service. At startup, the server will look
* for this factory service within the configured importer bundles.
*/
@Override
public final void start(BundleContext context) throws Exception {
context.registerService(AbstractFormatterFactory.class, this, null);
}
@Override
public final void stop(BundleContext context) throws Exception {
// Nothing to do for now.
}
/**
* Abstract method for constructing the class implementing Formatter
* @param formatName the type of the formatter
* @param props - the properties used for the construction of formatter.
* @return formatter instance created with the importer id
*/
public abstract Formatter create(String formatName, Properties props);
}