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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
package com.sun.star.comp.connections;
import com.sun.star.connection.ConnectionSetupException;
import com.sun.star.lang.XMultiServiceFactory;
import com.sun.star.uno.UnoRuntime;
/**
* Helper class for <code>Acceptor</code> and <code>Connector</code>.
*/
final class Implementation {
/**
* Instantiate a service for a given connection type.
*
* @param factory the service factory used to instantiate the requested
* service.
* @param description has the following format:
* <code><var>type</var></code><!--
* -->*(<code><var>key</var>=<var>value</var></code>).
* The specific service implementation is instantiated through the
* service factory as
* <code>com.sun.star.connection.<var>type</var>service<var></var><!--
* --></code>
* (with <code><var>type</var></code> in lower case, and
* <code><var>service</var></code> either <code>Acceptor</code> or
* <code>Connector</code>).
* @param serviceClass the IDL interface type for which to query the
* requested service.
* @param serviceType must be either <code>Acceptor</code> or
* <code>Connector</code>.
* @return an instance of the requested service. Never returns
* <code>null</code>.
* @throws ConnectionSetupException if the requested service can not be
* found, or cannot be instantiated.
*/
public static Object getConnectionService(XMultiServiceFactory factory,
String description,
Class<?> serviceClass,
String serviceType)
throws ConnectionSetupException
{
int i = description.indexOf(',');
String type
= (i < 0 ? description : description.substring(0, i)).toLowerCase();
Object service = null;
try {
service = UnoRuntime.queryInterface(
serviceClass,
factory.createInstance("com.sun.star.connection." + type
+ serviceType));
} catch (RuntimeException e) {
throw e;
} catch (com.sun.star.uno.Exception e) {
}
if (service == null) {
// As a fallback, also try to instantiate the service from the
// com.sun.star.lib.connections package structure:
try {
service
= Class.forName("com.sun.star.lib.connections." + type
+ "." + type + serviceType).newInstance();
} catch (ClassNotFoundException e) {
} catch (IllegalAccessException e) {
} catch (InstantiationException e) {
}
}
if (service == null) {
throw new ConnectionSetupException("no " + serviceType + " for "
+ type);
}
return service;
}
private Implementation() {} // do not instantiate
}
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