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Diffstat (limited to 'odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java')
| -rw-r--r-- | odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java b/odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java new file mode 100644 index 000000000..5e1fdd60b --- /dev/null +++ b/odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java @@ -0,0 +1,155 @@ +/* -*- 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: */ |