File: OfficeConnect.java

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/*************************************************************************
 *
 *  $RCSfile: OfficeConnect.java,v $
 *
 *  $Revision: 1.3 $
 *
 *  last change: $Author: hr $ $Date: 2003/06/30 15:35:28 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  the BSD license.
 *  
 *  Copyright (c) 2003 by Sun Microsystems, Inc.
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of Sun Microsystems, Inc. nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *     
 *************************************************************************/

package OfficeDev.samples.DesktopEnvironment;

// __________ Imports __________

// structs, const, ...
import com.sun.star.beans.PropertyValue;
import com.sun.star.bridge.XUnoUrlResolver;

// exceptions
import com.sun.star.container.NoSuchElementException;
import com.sun.star.uno.Exception;
import com.sun.star.uno.RuntimeException;

// interfaces
import com.sun.star.lang.XMultiServiceFactory;
import com.sun.star.uno.Any;

// helper
import com.sun.star.uno.IBridge;
import com.sun.star.uno.UnoRuntime;

// others
import java.lang.String;




// __________ Implementation __________

/**
 * support ONE singleton uno connection to an running office installation!
 * Can be used to open/use/close connection to uno environment of an already running office.
 * ctor isn't available from outside. You should call static function "getConnection()"
 * to open or use internal set connection which is created one times only.
 *
 * @author      Andreas Schlüns
 * @created     7. Februar 2002
 * @modified    05.02.2002 12:10
 */
public class OfficeConnect
{
    // ____________________

    /**
     * At first call we create static connection object and open connection to already runing office - if we can.
     * Then - and for all further requests we return these static connection member.
     *
     * @param  sHost  host on which office runs
     * @param  sPort  port on which office can be found
     * @return        Description of the Returned Value
     */
    public static synchronized void createConnection(String sHost, String sPort)
    {
        if (maConnection == null)
            maConnection = new OfficeConnect(sHost, sPort);
    }

    // ____________________

    /**
     * close connection to remote office if it exist
     */
    public static synchronized void disconnect()
    {
        if(maConnection!=null)
        {
            mxServiceManager=null;
            maConnection=null;
        }
    }

    // ____________________

    /**
     * ctor
     * We try to open the connection in our ctor ... transparently for user.
     * After it was successfully you will find an internal set member m_xFactory wich
     * means remote uno service manager of connected office.
     * We made it private to support singleton pattern of these implementation.
     * see getConnection() for further informations
     *
     * @param  sHost  host on which office runs
     * @param  sPort  port on which office can be found
     */
    private OfficeConnect(String sHost, String sPort)
    {
        try
        {

            String sConnectString  = "uno:socket,host=";
                   sConnectString += sHost;
                   sConnectString += ",port=";
                   sConnectString += sPort;
                   sConnectString += ";urp;";                                 // enable oneway calls
//                   sConnectString += ";urp,Negotiate=0,ForceSynchronous=1;";    // disable oneway calls
                   sConnectString += "StarOffice.ServiceManager";

            com.sun.star.lang.XMultiServiceFactory xLocalServiceManager = com.sun.star.comp.helper.Bootstrap.createSimpleServiceManager();
            com.sun.star.bridge.XUnoUrlResolver xURLResolver = (com.sun.star.bridge.XUnoUrlResolver)UnoRuntime.queryInterface(
                    com.sun.star.bridge.XUnoUrlResolver.class,
                    xLocalServiceManager.createInstance("com.sun.star.bridge.UnoUrlResolver"));

            mxServiceManager = (com.sun.star.lang.XMultiServiceFactory)UnoRuntime.queryInterface(
                    com.sun.star.lang.XMultiServiceFactory.class,
                    xURLResolver.resolve(sConnectString));
        }
        catch (com.sun.star.uno.RuntimeException exUNO)
        {
            System.out.println("connection failed" + exUNO);
            System.exit(0);
        }
        catch (com.sun.star.uno.Exception exRun)
        {
            System.out.println("connection failed" + exRun);
            System.exit(0);
        }
        catch (java.lang.Exception exJava)
        {
            System.out.println("connection failed" + exJava);
            System.exit(0);
        }
    }

    // ____________________

    /**
     * create uno components inside remote office process
     * After connection of these proccess to a running office we have access to remote service manager of it.
     * So we can use it to create all existing services. Use this method to create components by name and
     * get her interface. Casting of it to right target interface is part of your implementation.
     *
     * @param  aType              describe class type of created service
     *                            Returned object can be casted directly to this one.
     *                            Uno query was done by this method automaticly.
     * @param  sServiceSpecifier  name of service which should be created
     * @return                    Description of the Returned Value
     */
    public static synchronized Object createRemoteInstance(Class aType, String sServiceSpecifier)
    {
        Object aResult = null;
        try
        {
            aResult = UnoRuntime.queryInterface(
                    aType,
                    mxServiceManager.createInstance(sServiceSpecifier));
        }
        catch (com.sun.star.uno.Exception ex)
        {
            System.out.println("Couldn't create Service of type " + sServiceSpecifier + ": " + ex);
            System.exit(0);
        }
        return aResult;
    }

    // ____________________

    /**
     * same as "createRemoteInstance()" but supports additional parameter for initializing created object
     *
     * @param  lArguments         optional arguments
     *                            They are used to initialize new created service.
     * @param  aType              Description of Parameter
     * @param  sServiceSpecifier  Description of Parameter
     * @return                    Description of the Returned Value
     */
    public static synchronized Object createRemoteInstanceWithArguments(Class aType, String sServiceSpecifier, Any[] lArguments)
    {
        Object aResult = null;
        try
        {
            aResult = UnoRuntime.queryInterface(
                    aType,
                    mxServiceManager.createInstanceWithArguments(
                    sServiceSpecifier,
                    lArguments));
        }
        catch (com.sun.star.uno.Exception ex)
        {
            System.out.println("Couldn't create Service of type " + sServiceSpecifier + ": " + ex);
            System.exit(0);
        }
        return aResult;
    }

    // ____________________

    /**
     * returns rmote uno servie manager of singleton office instance
     */
    public static synchronized com.sun.star.lang.XMultiServiceFactory getSMGR()
    {
        return mxServiceManager;
    }

    // ____________________

    /**
     * member
     */
    private static OfficeConnect                           maConnection    ;    // singleton connection instance
    private static com.sun.star.lang.XMultiServiceFactory  mxServiceManager;    // reference to remote service manager of singleton connection object
}