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Diffstat (limited to 'ridljar/com/sun/star/comp/loader/JavaLoader.java')
| -rw-r--r-- | ridljar/com/sun/star/comp/loader/JavaLoader.java | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/ridljar/com/sun/star/comp/loader/JavaLoader.java b/ridljar/com/sun/star/comp/loader/JavaLoader.java new file mode 100644 index 000000000..42dee0da5 --- /dev/null +++ b/ridljar/com/sun/star/comp/loader/JavaLoader.java @@ -0,0 +1,439 @@ +/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +package com.sun.star.comp.loader; + +import java.lang.reflect.Method; +import java.lang.reflect.InvocationTargetException; +import java.net.URLDecoder; + +import com.sun.star.loader.CannotActivateFactoryException; +import com.sun.star.loader.XImplementationLoader; + +import com.sun.star.registry.CannotRegisterImplementationException; +import com.sun.star.registry.XRegistryKey; + +import com.sun.star.lang.XSingleComponentFactory; +import com.sun.star.lang.XSingleServiceFactory; +import com.sun.star.lang.XMultiServiceFactory; +import com.sun.star.lang.XServiceInfo; +import com.sun.star.lang.XInitialization; + +import com.sun.star.uno.XComponentContext; +import com.sun.star.beans.XPropertySet; +import com.sun.star.util.XMacroExpander; + +import com.sun.star.uno.Type; +import com.sun.star.uno.UnoRuntime; + +import com.sun.star.lib.util.StringHelper; + +import com.sun.star.uno.AnyConverter; + + +/** + * The <code>JavaLoader</code> class provides the functionality of the + * <code>com.sun.star.loader.Java</code> service. + * + * <p>Therefore the <code>JavaLoader</code> activates external UNO components + * which are implemented in Java.</p> + * + * <p>The loader is used by the <code>ServiceManager</code>.</p> + * + * @see com.sun.star.loader.XImplementationLoader + * @see com.sun.star.loader.Java + * @see com.sun.star.comp.servicemanager.ServiceManager + * @since UDK1.0 + */ +public class JavaLoader implements XImplementationLoader, + XServiceInfo, + XInitialization +{ + private static final boolean DEBUG = false; + + private static final void DEBUG(String dbg) { + if (DEBUG) System.err.println( dbg ); + } + + private static String[] supportedServices = { + "com.sun.star.loader.Java" + }; + + protected XMultiServiceFactory multiServiceFactory = null; + + private XMacroExpander m_xMacroExpander = null; + private static final String EXPAND_PROTOCOL_PREFIX = "vnd.sun.star.expand:"; + + /** + * Expands macrofied url using the macro expander singleton. + */ + private String expand_url( String url ) throws RuntimeException + { + if (url == null || !url.startsWith( EXPAND_PROTOCOL_PREFIX )) { + return url; + } + try { + if (m_xMacroExpander == null) { + XPropertySet xProps = + UnoRuntime.queryInterface( + XPropertySet.class, multiServiceFactory ); + if (xProps == null) { + throw new com.sun.star.uno.RuntimeException( + "service manager does not support XPropertySet!", + this ); + } + XComponentContext xContext = (XComponentContext) + AnyConverter.toObject( + new Type( XComponentContext.class ), + xProps.getPropertyValue( "DefaultContext" ) ); + m_xMacroExpander = (XMacroExpander)AnyConverter.toObject( + new Type( XMacroExpander.class ), + xContext.getValueByName( + "/singletons/com.sun.star.util.theMacroExpander" ) + ); + } + // decode uric class chars + String macro = URLDecoder.decode( + StringHelper.replace( + url.substring( EXPAND_PROTOCOL_PREFIX.length() ), + '+', "%2B" ), "UTF-8" ); + // expand macro string + String ret = m_xMacroExpander.expandMacros( macro ); + if (DEBUG) { + System.err.println( + "JavaLoader.expand_url(): " + url + " => " + + macro + " => " + ret ); + } + return ret; + } catch (com.sun.star.uno.Exception exc) { + throw new com.sun.star.uno.RuntimeException(exc, + exc.getMessage(), this ); + } catch (java.lang.Exception exc) { + throw new com.sun.star.uno.RuntimeException(exc, + exc.getMessage(), this ); + } + } + + /** + * Default constructor. + * + * <p>Creates a new instance of the <code>JavaLoader</code> class.</p> + */ + public JavaLoader() {} + + /** + * Creates a new <code>JavaLoader</code> object. + * + * <p>The specified <code>com.sun.star.lang.XMultiServiceFactory</code> is + * the <code>ServiceManager</code> service which can be delivered to all + * components the <code>JavaLoader</code> is loading.</p> + * + * <p>To set the <code>MultiServiceFactory</code> you can use the + * <code>com.sun.star.lang.XInitialization</code> interface, either.</p> + * + * @param factory the <code>ServiceManager</code>. + * @see com.sun.star.comp.servicemanager.ServiceManager + * @see com.sun.star.lang.XInitialization + */ + public JavaLoader(XMultiServiceFactory factory) { + multiServiceFactory = factory; + } + + /** + * Unlike the original intention, the method could be called every time a + * new <code>com.sun.star.lang.XMultiServiceFactory</code> should be set at + * the loader. + * + * @param args - the first parameter (args[0]) specifies the <code>ServiceManager</code>. + * @see com.sun.star.lang.XInitialization + * @see com.sun.star.comp.servicemanager.ServiceManager + */ + public void initialize( java.lang.Object[] args ) + throws com.sun.star.uno.Exception, + com.sun.star.uno.RuntimeException + { + if (args.length == 0) + throw new com.sun.star.lang.IllegalArgumentException("No arguments specified"); + + try { + multiServiceFactory = (XMultiServiceFactory) AnyConverter.toObject( + new Type(XMultiServiceFactory.class), args[0]); + } catch (ClassCastException castEx) { + throw new com.sun.star.lang.IllegalArgumentException(castEx, + "The argument must be an instance of XMultiServiceFactory"); + } + } + + /** + * Supplies the implementation name of the component. + * + * @return the implementation name - here the class name. + * @see com.sun.star.lang.XServiceInfo + */ + public String getImplementationName() + throws com.sun.star.uno.RuntimeException + { + return getClass().getName(); + } + + /** + * Verifies if a given service is supported by the component. + * + * @param serviceName the name of the service that should be checked. + * @return true,if service is supported - otherwise false. + * + * @see com.sun.star.lang.XServiceInfo + */ + public boolean supportsService(String serviceName) + throws com.sun.star.uno.RuntimeException + { + for (String supportedService : supportedServices) { + if (supportedService.equals(serviceName)) { + return true; + } + } + return false; + } + + /** + * Supplies a list of all service names supported by the component. + * + * @return a String array with all supported services. + * @see com.sun.star.lang.XServiceInfo + */ + public String[] getSupportedServiceNames() + throws com.sun.star.uno.RuntimeException + { + return supportedServices; + } + + /** + * Provides a components factory. + * + * <p>The <code>JavaLoader</code> tries to load the class first. If a + * location URL is given the RegistrationClassFinder is used to load the + * class. Otherwise the class is loaded through the Class.forName method.</p> + * + * <p>To get the factory the inspects the class for the optional static member + * functions __getServiceFactory resp. getServiceFactory (DEPRECATED).</p> + * + * @param implementationName the implementation (class) name of the component. + * @param implementationLoaderUrl the URL of the implementation loader. Not used. + * @param locationUrl points to an archive (JAR file) which contains a component. + * @param xKey registry key. + * @return the factory for the component (@see com.sun.star.lang.XSingleServiceFactory) + * + * @see com.sun.star.loader.XImplementationLoader + * @see com.sun.star.comp.loader.RegistrationClassFinder + */ + public java.lang.Object activate( String implementationName, + String implementationLoaderUrl, + String locationUrl, + XRegistryKey xKey ) + throws CannotActivateFactoryException, + com.sun.star.uno.RuntimeException + { + locationUrl = expand_url( locationUrl ); + + Object returnObject = null; + Class<?> clazz ; + + DEBUG("try to get factory for " + implementationName); + + // First we must get the class of the implementation + // 1. If a location URL is given it is assumed that this points to a JAR file. + // The components class name is stored in the manifest file. + // 2. If only the implementation name is given, the class is loaded with the + // Class.forName() method. This is a hack to load bootstrap components. + // Normally a string must no be null. + try { + if ( locationUrl != null ) { + clazz = RegistrationClassFinder.find( locationUrl ); + if (clazz == null) { + throw new CannotActivateFactoryException( + "Cannot activate jar " + locationUrl); + } + } else { + clazz = Class.forName( implementationName ); + if (clazz == null) { + throw new CannotActivateFactoryException( + "Cannot find class " + implementationName); + } + } + } catch (java.net.MalformedURLException e) { + throw new CannotActivateFactoryException(e, "Can not activate factory because " + e); + } catch (java.io.IOException e) { + throw new CannotActivateFactoryException(e, "Can not activate factory because " + e); + } catch (java.lang.ClassNotFoundException e) { + throw new CannotActivateFactoryException(e, "Can not activate factory because " + e); + } + + Class<?>[] paramTypes = {String.class, XMultiServiceFactory.class, XRegistryKey.class}; + Object[] params = { implementationName, multiServiceFactory, xKey }; + + // try to get factory from implementation class + // latest style: use the public static method __getComponentFactory + // - new style: use the public static method __getServiceFactory + // - old style: use the public static method getServiceFactory ( DEPRECATED ) + + Method compfac_method = null; + try { + compfac_method = clazz.getMethod( + "__getComponentFactory", new Class [] { String.class } ); + } catch ( NoSuchMethodException noSuchMethodEx) { + } catch ( SecurityException secEx) { + } + + Method method = null; + if (null == compfac_method) { + try { + method = clazz.getMethod("__getServiceFactory", paramTypes); + } catch ( NoSuchMethodException noSuchMethodEx) { + } catch ( SecurityException secEx) { + } + } + + try { + if (null != compfac_method) { + Object ret = compfac_method.invoke( clazz, new Object [] { implementationName } ); + if (!(ret instanceof XSingleComponentFactory)) + throw new CannotActivateFactoryException( + "No factory object for " + implementationName ); + + return ret; + } + else { + if ( method == null ) + method = clazz.getMethod("getServiceFactory", paramTypes); + + Object oRet = method.invoke(clazz, params); + + if ( (oRet != null) && (oRet instanceof XSingleServiceFactory) ) + returnObject = oRet; + } + } catch ( NoSuchMethodException e) { + throw new CannotActivateFactoryException(e, "Can not activate the factory for " + + implementationName); + } catch ( SecurityException e) { + throw new CannotActivateFactoryException(e, "Can not activate the factory for " + + implementationName); + } catch ( IllegalAccessException e ) { + throw new CannotActivateFactoryException(e, "Can not activate the factory for " + + implementationName); + } + catch ( IllegalArgumentException e ) { + throw new CannotActivateFactoryException(e, "Can not activate the factory for " + + implementationName); + } catch ( InvocationTargetException e ) { + throw new CannotActivateFactoryException(e, "Can not activate the factory for " + + implementationName); + } + + return returnObject; + } + + /** + * Registers the component in a registry under a given root key. + * + * <p>If the component supports the optional + * methods __writeRegistryServiceInfo, writeRegistryServiceInfo (DEPRECATED), + * the call is delegated to that method. Otherwise a default registration + * will be accomplished.</p> + * + * @param regKey the root key under that the component should be registered. + * @param implementationLoaderUrl specifies the loader, the component is loaded by. + * @param locationUrl points to an archive (JAR file) which contains a component. + * @return true if registration is successfully - otherwise false. + */ + public boolean writeRegistryInfo( XRegistryKey regKey, + String implementationLoaderUrl, + String locationUrl ) + throws CannotRegisterImplementationException, + com.sun.star.uno.RuntimeException + { + locationUrl = expand_url( locationUrl ); + + boolean success = false; + + try { + + Class<?> clazz = RegistrationClassFinder.find(locationUrl); + if (null == clazz) + throw new CannotRegisterImplementationException( + "Cannot determine registration class!" ); + + Class<?>[] paramTypes = { XRegistryKey.class }; + Object[] params = { regKey }; + + Method method = clazz.getMethod("__writeRegistryServiceInfo", paramTypes); + Object oRet = method.invoke(clazz, params); + + if ( (oRet != null) && (oRet instanceof Boolean) ) + success = ((Boolean) oRet).booleanValue(); + } catch (Exception e) { + throw new CannotRegisterImplementationException(e, e.toString()); + } + + return success; + } + + /** + * Supplies the factory for the <code>JavaLoader</code>. + * + * @param implName the name of the desired component. + * @param multiFactory the <code>ServiceManager</code> is delivered to the factory. + * @param regKey not used - can be null. + * @return the factory for the <code>JavaLoader</code>. + */ + public static XSingleServiceFactory getServiceFactory( String implName, + XMultiServiceFactory multiFactory, + XRegistryKey regKey) + { + if ( implName.equals(JavaLoader.class.getName()) ) + return new JavaLoaderFactory( multiFactory ); + + return null; + } + + /** + * Registers the <code>JavaLoader</code> at the registry. + * + * @param regKey root key under which the <code>JavaLoader</code> should be registered. + * @return true if registration succeeded - otherwise false. + */ + public static boolean writeRegistryServiceInfo(XRegistryKey regKey) { + boolean result = false; + + try { + XRegistryKey newKey = regKey.createKey("/" + JavaLoader.class.getName() + "/UNO/SERVICE"); + + for (String supportedService : supportedServices) { + newKey.createKey(supportedService); + } + + result = true; + } catch (Exception ex) { + if (DEBUG) System.err.println(">>>JavaLoader.writeRegistryServiceInfo " + ex); + } + + return result; + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |