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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 000000000000..9b2a22403caa --- /dev/null +++ b/odk/examples/DevelopersGuide/OfficeDev/Linguistic/OneInstanceFactory.java @@ -0,0 +1,155 @@ +/************************************************************************* + * + * 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.XSingleServiceFactory; +import com.sun.star.lang.XServiceInfo; +import com.sun.star.lang.XInitialization; +import com.sun.star.lang.XMultiServiceFactory; +import com.sun.star.beans.XPropertySet; +import com.sun.star.uno.XInterface; +import com.sun.star.uno.Any; +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 + XSingleServiceFactory, + XServiceInfo +{ + Class aMyClass; + String aSvcImplName; + String[] aSupportedSvcNames; + XInterface xInstantiatedService; + XMultiServiceFactory xMultiFactory; + + public OneInstanceFactory( + Class aMyClass, + String aSvcImplName, + String[] aSupportedSvcNames, + XMultiServiceFactory xMultiFactory ) + { + this.aMyClass = aMyClass; + this.aSvcImplName = aSvcImplName; + this.aSupportedSvcNames = aSupportedSvcNames; + this.xMultiFactory = xMultiFactory; + xInstantiatedService = null; + } + + //********************** + // XSingleServiceFactory + //********************** + public Object createInstance() + 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 = (XInitialization) UnoRuntime.queryInterface( + XInitialization.class, createInstance()); + if (xIni != null) + { + Object[] aArguments = new Object[]{ null, null }; + if (xMultiFactory != null) + { + XPropertySet xPropSet = (XPropertySet) UnoRuntime.queryInterface( + XPropertySet.class , xMultiFactory.createInstance( + "com.sun.star.linguistic2.LinguProperties" ) ); + aArguments[0] = xPropSet; + } + xIni.initialize( aArguments ); + } + } + return xInstantiatedService; + } + + public Object createInstanceWithArguments( Object[] aArguments ) + throws com.sun.star.uno.Exception, + com.sun.star.uno.RuntimeException + { + if (xInstantiatedService == null) + { + XInitialization xIni = (XInitialization) UnoRuntime.queryInterface( + XInitialization.class, createInstance()); + 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; + } +}; + |