/*************************************************************************
*
* $RCSfile: Implementation.java,v $
*
* $Revision: 1.1 $
*
* last change: $Author: sb $ $Date: 2002/10/07 13:16:27 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (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.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
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
}