1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 package com.sun.star.comp.connections; 25 26 import com.sun.star.bridge.XInstanceProvider; 27 28 import com.sun.star.lang.XMultiServiceFactory; 29 import com.sun.star.lang.XSingleServiceFactory; 30 31 import com.sun.star.registry.XRegistryKey; 32 33 import com.sun.star.comp.loader.FactoryHelper; 34 35 36 /** 37 * The <code>ConstantInstanceProvider</code> is a component 38 * that implements the <code>XInstanceProvider</code> Interface. 39 * <p> 40 * @version $Revision: 1.3 $ $ $Date: 2008-04-11 11:08:55 $ 41 * @author Kay Ramme 42 * @see com.sun.star.bridge.XBridge 43 * @see com.sun.star.bridge.XBridgeFactory 44 * @see com.sun.star.bridge.XInstanceProvider 45 * @see com.sun.star.comp.loader.JavaLoader 46 * @since UDK1.0 47 */ 48 public class ConstantInstanceProvider implements XInstanceProvider { 49 /** 50 * When set to true, enables various debugging output. 51 */ 52 static public final boolean DEBUG = false; 53 54 /** 55 * The name of the service, the <code>JavaLoader</code> acceses this through reflection. 56 */ 57 static private final String __serviceName = "com.sun.star.comp.connection.InstanceProvider"; 58 59 /** 60 * Gives a factory for creating the service. 61 * This method is called by the <code>JavaLoader</code> 62 * <p> 63 * @return returns a <code>XSingleServiceFactory</code> for creating the component 64 * @param implName the name of the implementation for which a service is desired 65 * @param multiFactory the service manager to be uses if needed 66 * @param regKey the registryKey 67 * @see com.sun.star.comp.loader.JavaLoader 68 */ __getServiceFactory(String implName, XMultiServiceFactory multiFactory, XRegistryKey regKey)69 public static XSingleServiceFactory __getServiceFactory(String implName, 70 XMultiServiceFactory multiFactory, 71 XRegistryKey regKey) 72 { 73 XSingleServiceFactory xSingleServiceFactory = null; 74 75 if (implName.equals(ConstantInstanceProvider.class.getName()) ) 76 xSingleServiceFactory = FactoryHelper.getServiceFactory(ConstantInstanceProvider.class, 77 __serviceName, 78 multiFactory, 79 regKey); 80 81 return xSingleServiceFactory; 82 } 83 84 protected XMultiServiceFactory _serviceManager; 85 protected String _serviceName; 86 protected Object _instance; 87 88 setInstance(String serviceName)89 public void setInstance(String serviceName) throws com.sun.star.uno.Exception { 90 _instance = _serviceManager.createInstance(serviceName); 91 _serviceName = serviceName; 92 } 93 94 /** 95 * Constructs a new <code>ConstantInstanceProvider</code>. 96 * Uses the provided ServiceManager as the provided instance. 97 * <p> 98 * @param serviceName the provided service manager 99 */ ConstantInstanceProvider(XMultiServiceFactory serviceManager)100 public ConstantInstanceProvider(XMultiServiceFactory serviceManager) { 101 _serviceManager = serviceManager; 102 103 _serviceName = "SERVICEMANAGER"; 104 _instance = serviceManager; 105 } 106 107 /** 108 * Gives an object for the passed instance name. 109 * <p> 110 * @return the desired instance 111 * @param sInstanceName the name of the desired instance 112 */ getInstance(String sInstanceName)113 public Object getInstance(String sInstanceName) throws com.sun.star.container.NoSuchElementException, com.sun.star.uno.RuntimeException { 114 Object result = sInstanceName.equals(_serviceName) ? _instance : null; 115 116 if(DEBUG) System.err.println("##### " + getClass().getName() + ".getInstance(" + sInstanceName + "):" + result); 117 118 return result; 119 } 120 } 121 122