com.sun.star.comp.connections.Acceptor Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of libreoffice Show documentation
Public UNO Java Classes (formerly jurt,juh,ridl,unoil)
The newest version!
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * 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.comp.loader.FactoryHelper;
import com.sun.star.connection.AlreadyAcceptingException;
import com.sun.star.connection.ConnectionSetupException;
import com.sun.star.connection.XAcceptor;
import com.sun.star.connection.XConnection;
import com.sun.star.lang.XMultiServiceFactory;
import com.sun.star.lang.XSingleServiceFactory;
import com.sun.star.registry.XRegistryKey;

/**
 * A component that implements the XAcceptor interface.
 *
 * The Acceptor is a general component, that uses less general
 * components (like com.sun.star.connection.socketAcceptor) to
 * implement its functionality.
 *
 * @see com.sun.star.connection.XAcceptor
 * @see com.sun.star.connection.XConnection
 * @see com.sun.star.connection.XConnector
 * @see com.sun.star.comp.loader.JavaLoader
 *
 * @since UDK 1.0
 */
public final class Acceptor implements XAcceptor {
    /**
     * The name of the service.
     *
     * The JavaLoader accesses this through reflection.
     *
     * @see com.sun.star.comp.loader.JavaLoader
     */
    public static final String __serviceName
    = "com.sun.star.connection.Acceptor";

    /**
     * Returns a factory for creating the service.
     *
     * This method is called by the JavaLoader.
     *
     * @param implName the name of the implementation for which a service is
     *     requested.
     * @param multiFactory the service manager to be used (if needed).
     * @param regKey the registry key.
     * @return an XSingleServiceFactory for creating the component.
     *
     * @see com.sun.star.comp.loader.JavaLoader
     */
    public static XSingleServiceFactory __getServiceFactory(
        String implName, XMultiServiceFactory multiFactory, XRegistryKey regKey)
    {
        return implName.equals(Acceptor.class.getName())
            ? FactoryHelper.getServiceFactory(Acceptor.class, __serviceName,
                                              multiFactory, regKey)
            : null;
    }

    /**
     * Constructs a new Acceptor that uses the given service
     * factory to create a specific XAcceptor.
     *
     * @param serviceFactory the service factory to use.
     */
    public Acceptor(XMultiServiceFactory serviceFactory) {
        this.serviceFactory = serviceFactory;
    }

    /**
     * Accepts a connection request via the given connection type.
     *
     * This call blocks until a connection has been established.
     *
     * The connection description has the following format:
     * type*(key=value).
     * The specific XAcceptor implementation is instantiated
     * through the service factory as
     * com.sun.star.connection.typeAcceptor (with
     * type in lower case).
     *
     * @param connectionDescription the description of the connection.
     * @return an XConnection to the client.
     *
     * @see com.sun.star.connection.XConnection
     * @see com.sun.star.connection.XConnector
     */
    public XConnection accept(String connectionDescription) throws
        AlreadyAcceptingException, ConnectionSetupException,
        com.sun.star.lang.IllegalArgumentException
    {
        if (DEBUG) {
            System.err.println("##### " + getClass().getName() + ".accept("
                               + connectionDescription + ")");
        }
        XAcceptor acc;
        synchronized (this) {
            if (acceptor == null) {
                acceptor = (XAcceptor) Implementation.getConnectionService(
                    serviceFactory, connectionDescription, XAcceptor.class,
                    "Acceptor");
                acceptingDescription = connectionDescription;
            } else if (!connectionDescription.equals(acceptingDescription)) {
                throw new AlreadyAcceptingException(acceptingDescription
                                                    + " vs. "
                                                    + connectionDescription);
            }
            acc = acceptor;
        }
        return acc.accept(connectionDescription);
    }

    /**
     *
     * @see com.sun.star.connection.XAcceptor#stopAccepting
     */
    public void stopAccepting() {
        XAcceptor acc;
        synchronized (this) {
            acc = acceptor;
        }
        acc.stopAccepting();
    }

    private static final boolean DEBUG = false;

    private final XMultiServiceFactory serviceFactory;

    private XAcceptor acceptor = null;
    private String acceptingDescription;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */