1 /************************************************************************* 2 * 3 * The Contents of this file are made available subject to the terms of 4 * the BSD license. 5 * 6 * Copyright 2000, 2010 Oracle and/or its affiliates. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of Sun Microsystems, Inc. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 28 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 30 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 31 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 *************************************************************************/ 34 35 import com.sun.star.lang.XSingleServiceFactory; 36 import com.sun.star.lang.XServiceInfo; 37 import com.sun.star.lang.XInitialization; 38 import com.sun.star.lang.XMultiServiceFactory; 39 import com.sun.star.beans.XPropertySet; 40 import com.sun.star.uno.XInterface; 41 import com.sun.star.uno.Any; 42 import com.sun.star.uno.UnoRuntime; 43 44 import java.lang.reflect.Constructor; 45 46 // 47 // purpose of this class is to provide a service factory that instantiates 48 // the services only once (as long as this factory itself exists) 49 // and returns only reference to that instance. 50 // 51 52 public class OneInstanceFactory implements 53 XSingleServiceFactory, 54 XServiceInfo 55 { 56 Class aMyClass; 57 String aSvcImplName; 58 String[] aSupportedSvcNames; 59 XInterface xInstantiatedService; 60 XMultiServiceFactory xMultiFactory; 61 62 public OneInstanceFactory( 63 Class aMyClass, 64 String aSvcImplName, 65 String[] aSupportedSvcNames, 66 XMultiServiceFactory xMultiFactory ) 67 { 68 this.aMyClass = aMyClass; 69 this.aSvcImplName = aSvcImplName; 70 this.aSupportedSvcNames = aSupportedSvcNames; 71 this.xMultiFactory = xMultiFactory; 72 xInstantiatedService = null; 73 } 74 75 //********************** 76 // XSingleServiceFactory 77 //********************** 78 public Object createInstance() 79 throws com.sun.star.uno.Exception, 80 com.sun.star.uno.RuntimeException 81 { 82 if (xInstantiatedService == null) 83 { 84 //!! the here used services all have exact one constructor!! 85 Constructor [] aCtor = aMyClass.getConstructors(); 86 try { 87 xInstantiatedService = (XInterface) aCtor[0].newInstance( (Object[])null ); 88 } 89 catch( Exception e ) { 90 } 91 92 //!! workaround for services not always being created 93 //!! via 'createInstanceWithArguments' 94 XInitialization xIni = (XInitialization) UnoRuntime.queryInterface( 95 XInitialization.class, createInstance()); 96 if (xIni != null) 97 { 98 Object[] aArguments = new Object[]{ null, null }; 99 if (xMultiFactory != null) 100 { 101 XPropertySet xPropSet = (XPropertySet) UnoRuntime.queryInterface( 102 XPropertySet.class , xMultiFactory.createInstance( 103 "com.sun.star.linguistic2.LinguProperties" ) ); 104 aArguments[0] = xPropSet; 105 } 106 xIni.initialize( aArguments ); 107 } 108 } 109 return xInstantiatedService; 110 } 111 112 public Object createInstanceWithArguments( Object[] aArguments ) 113 throws com.sun.star.uno.Exception, 114 com.sun.star.uno.RuntimeException 115 { 116 if (xInstantiatedService == null) 117 { 118 XInitialization xIni = (XInitialization) UnoRuntime.queryInterface( 119 XInitialization.class, createInstance()); 120 if (xIni != null) 121 xIni.initialize( aArguments ); 122 } 123 return xInstantiatedService; 124 } 125 126 127 //************* 128 // XServiceInfo 129 //************* 130 public boolean supportsService( String aServiceName ) 131 throws com.sun.star.uno.RuntimeException 132 { 133 boolean bFound = false; 134 int nCnt = aSupportedSvcNames.length; 135 for (int i = 0; i < nCnt && !bFound; ++i) 136 { 137 if (aServiceName.equals( aSupportedSvcNames[i] )) 138 bFound = true; 139 } 140 return bFound; 141 } 142 143 public String getImplementationName() 144 throws com.sun.star.uno.RuntimeException 145 { 146 return aSvcImplName; 147 } 148 149 public String[] getSupportedServiceNames() 150 throws com.sun.star.uno.RuntimeException 151 { 152 return aSupportedSvcNames; 153 } 154 }; 155 156