diff options
Diffstat (limited to 'bridges/source/jni_uno/java/com/sun/star/bridges/jni_uno/JNI_proxy.java')
| -rw-r--r-- | bridges/source/jni_uno/java/com/sun/star/bridges/jni_uno/JNI_proxy.java | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/bridges/source/jni_uno/java/com/sun/star/bridges/jni_uno/JNI_proxy.java b/bridges/source/jni_uno/java/com/sun/star/bridges/jni_uno/JNI_proxy.java new file mode 100644 index 000000000000..076d568e9c91 --- /dev/null +++ b/bridges/source/jni_uno/java/com/sun/star/bridges/jni_uno/JNI_proxy.java @@ -0,0 +1,218 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +package com.sun.star.bridges.jni_uno; + +import com.sun.star.lib.util.AsynchronousFinalizer; +import com.sun.star.lib.util.NativeLibraryLoader; +import com.sun.star.uno.Type; +import com.sun.star.uno.UnoRuntime; +import com.sun.star.uno.IEnvironment; +import com.sun.star.uno.IQueryInterface; + + +//============================================================================== +public final class JNI_proxy implements java.lang.reflect.InvocationHandler +{ + static { + NativeLibraryLoader.loadLibrary(JNI_proxy.class.getClassLoader(), + "java_uno"); + } + protected static ClassLoader s_classloader = + JNI_proxy.class.getClassLoader(); + protected static Class s_InvocationHandler [] = + new Class [] { java.lang.reflect.InvocationHandler.class }; + + protected long m_bridge_handle; + protected IEnvironment m_java_env; + protected long m_receiver_handle; + protected long m_td_handle; + protected Type m_type; + protected String m_oid; + protected Class m_class; + + //__________________________________________________________________________ + public static String get_stack_trace( Throwable throwable ) + throws Throwable + { + boolean current_trace = false; + if (null == throwable) + { + throwable = new Throwable(); + current_trace = true; + } + java.io.StringWriter string_writer = + new java.io.StringWriter(); + java.io.PrintWriter print_writer = + new java.io.PrintWriter( string_writer, true ); + throwable.printStackTrace( print_writer ); + print_writer.flush(); + print_writer.close(); + string_writer.flush(); + String trace = string_writer.toString(); + if (current_trace) + { + // cut out first two lines + int n = trace.indexOf( '\n' ); + n = trace.indexOf( '\n', n +1 ); + trace = trace.substring( n +1 ); + } + return "\njava stack trace:\n" + trace; + } + + //__________________________________________________________________________ + private native void finalize( long bridge_handle ); + + //__________________________________________________________________________ + public void finalize() + { + AsynchronousFinalizer.add(new AsynchronousFinalizer.Job() { + public void run() throws Throwable { + JNI_proxy.this.finalize( m_bridge_handle ); + } + }); + } + + //__________________________________________________________________________ + private JNI_proxy( + long bridge_handle, IEnvironment java_env, + long receiver_handle, long td_handle, Type type, String oid ) + { + m_bridge_handle = bridge_handle; + m_java_env = java_env; + m_receiver_handle = receiver_handle; + m_td_handle = td_handle; + m_type = type; + m_oid = oid; + m_class = m_type.getZClass(); + } + + //__________________________________________________________________________ + public static Object create( + long bridge_handle, IEnvironment java_env, + long receiver_handle, long td_handle, Type type, String oid, + java.lang.reflect.Constructor proxy_ctor ) + throws Throwable + { + JNI_proxy handler = new JNI_proxy( + bridge_handle, java_env, receiver_handle, td_handle, type, oid ); + Object proxy = proxy_ctor.newInstance( new Object [] { handler } ); + return java_env.registerInterface( proxy, new String [] { oid }, type ); + } + + //__________________________________________________________________________ + public static java.lang.reflect.Constructor get_proxy_ctor( Class clazz ) + throws Throwable + { + Class proxy_class = java.lang.reflect.Proxy.getProxyClass( + s_classloader, + new Class [] { clazz, IQueryInterface.class, + com.sun.star.lib.uno.Proxy.class } ); + return proxy_class.getConstructor( s_InvocationHandler ); + } + + //__________________________________________________________________________ + private native Object dispatch_call( + long bridge_handle, String decl_class, String method, Object args [] ) + throws Throwable; + + // InvocationHandler impl + //__________________________________________________________________________ + public Object invoke( + Object proxy, java.lang.reflect.Method method, Object args [] ) + throws Throwable + { + Class decl_class = method.getDeclaringClass(); + String method_name = method.getName(); + + if (Object.class.equals( decl_class )) + { + if (method_name.equals( "hashCode" )) + { + // int hashCode() + return new Integer( m_oid.hashCode() ); + } + else if (method_name.equals( "equals" )) + { + // boolean equals( Object obj ) + return isSame(args[0]); + } + else if (method_name.equals( "toString" )) + { + // String toString() + return this.toString() + " [oid=" + m_oid + + ", type=" + m_type.getTypeName() + "]"; + } + } + // UNO interface call + else if (decl_class.isAssignableFrom( m_class )) + { + // dispatch interface call + return dispatch_call( + m_bridge_handle, decl_class.getName(), method_name, args ); + } + // IQueryInterface impl + else if (IQueryInterface.class.equals( decl_class )) + { + if (method_name.equals( "queryInterface" )) + { + // Object queryInterface( Type type ) + Object registered_proxy = + m_java_env.getRegisteredInterface( m_oid, (Type)args[ 0 ] ); + if (null == registered_proxy) + { + return dispatch_call( + m_bridge_handle, + "com.sun.star.uno.XInterface", method_name, args ); + } + else + { + return registered_proxy; + } + } + else if (method_name.equals( "isSame" )) + { + // boolean isSame( Object object ) + return isSame(args[0]); + } + else if (method_name.equals( "getOid" )) + { + // String getOid() + return m_oid; + } + } + + throw new com.sun.star.uno.RuntimeException( + "[jni_uno bridge error] unexpected call on proxy " + + proxy.toString() + ": " + method.toString() ); + } + + private Boolean isSame(Object obj) { + return new Boolean(obj != null + && m_oid.equals(UnoRuntime.generateOid(obj))); + } +} |