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/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the BSD license.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
* 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.
*
*************************************************************************/
import com.sun.star.lang.XSingleComponentFactory;
import com.sun.star.lang.XServiceInfo;
import com.sun.star.lang.XInitialization;
import com.sun.star.beans.XPropertySet;
import com.sun.star.uno.XComponentContext;
import com.sun.star.uno.XInterface;
import com.sun.star.uno.UnoRuntime;
import java.lang.reflect.Constructor;
// purpose of this class is to provide a service factory that instantiates
// the services only once (as long as this factory itself exists)
// and returns only reference to that instance.
public class OneInstanceFactory implements
XSingleComponentFactory,
XServiceInfo
{
private final Class aMyClass;
private final String aSvcImplName;
private final String[] aSupportedSvcNames;
private XInterface xInstantiatedService;
public OneInstanceFactory(
Class aMyClass,
String aSvcImplName,
String[] aSupportedSvcNames )
{
this.aMyClass = aMyClass;
this.aSvcImplName = aSvcImplName;
this.aSupportedSvcNames = aSupportedSvcNames;
xInstantiatedService = null;
}
// XSingleComponentFactory
public Object createInstanceWithContext( XComponentContext context )
throws com.sun.star.uno.Exception,
com.sun.star.uno.RuntimeException
{
if (xInstantiatedService == null)
{
//!! the here used services all have exact one constructor!!
Constructor [] aCtor = aMyClass.getConstructors();
try {
xInstantiatedService = (XInterface) aCtor[0].newInstance( (Object[])null );
}
catch( Exception e ) {
}
//!! workaround for services not always being created
//!! via 'createInstanceWithArguments'
XInitialization xIni = UnoRuntime.queryInterface(
XInitialization.class, createInstanceWithContext(context));
if (xIni != null)
{
Object[] aArguments = new Object[]{ null, null };
if (context != null)
{
XPropertySet xPropSet = UnoRuntime.queryInterface(
XPropertySet.class,
context.getServiceManager().createInstanceWithContext(
"com.sun.star.linguistic2.LinguProperties",
context ) );
aArguments[0] = xPropSet;
}
xIni.initialize( aArguments );
}
}
return xInstantiatedService;
}
public Object createInstanceWithArgumentsAndContext( Object[] aArguments, XComponentContext context )
throws com.sun.star.uno.Exception,
com.sun.star.uno.RuntimeException
{
if (xInstantiatedService == null)
{
XInitialization xIni = UnoRuntime.queryInterface(
XInitialization.class, createInstanceWithContext( context ));
if (xIni != null)
xIni.initialize( aArguments );
}
return xInstantiatedService;
}
// XServiceInfo
public boolean supportsService( String aServiceName )
throws com.sun.star.uno.RuntimeException
{
boolean bFound = false;
int nCnt = aSupportedSvcNames.length;
for (int i = 0; i < nCnt && !bFound; ++i)
{
if (aServiceName.equals( aSupportedSvcNames[i] ))
bFound = true;
}
return bFound;
}
public String getImplementationName()
throws com.sun.star.uno.RuntimeException
{
return aSvcImplName;
}
public String[] getSupportedServiceNames()
throws com.sun.star.uno.RuntimeException
{
return aSupportedSvcNames;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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