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*
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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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>).</p>
* @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
}