From 6ca84a804a7378e79bbb1d5a6d646ead7e6cfa46 Mon Sep 17 00:00:00 2001 From: Michael Koch Date: Sat, 19 Feb 2005 18:47:29 +0000 Subject: [multiple changes] 2005-02-19 Michael Koch * Makefile.am: Added new files in gnu/java/beans and java/beans/XMLDecoder.java. * Makefile.in: Regenerated. 2005-02-19 Robert Schuster * gnu/java/beans/decoder/GrowableArrayContext.java: Fixed assignment behavior by using java.lang.reflect.Array.set() directly. 2005-02-19 Dalibor Topic * gnu/java/beans/EmptyBeanInfo.java, gnu/java/beans/info/ComponentBeanInfo.java: Removed unused files. 2005-02-19 Robert Schuster * gnu/java/beans/DummyAppletStub.java: Add dummy implementation of AppletStub for java.beans.Beans.instantiate. * gnu/java/beans/DummyAppletContext.java: Add dummy implementation of AppletContext. * java/beans/Beans: Added 1.4 functionality, fixed user documentation to be conformant with Javadoc guidelines. (instantiate): Added two more overloaded variants, reworked user documentation, fixed exception behavior, fixed behavior when deserializing null. 2005-02-19 Mark Wielaard * gnu/java/beans/decoder/DummyHandler.java: Add return statements for failing methods. * gnu/java/beans/decoder/DummyContext.java: Likewise. 2005-02-19 Robert Schuster * gnu/java/beans/decoder/AbstractContext.java, gnu/java/beans/decoder/AbstractCreatableContext.java, gnu/java/beans/decoder/AbstractElementHandler.java, gnu/java/beans/decoder/AbstractObjectContext.java, gnu/java/beans/decoder/ArrayContext.java, gnu/java/beans/decoder/ArrayHandler.java, gnu/java/beans/decoder/AssemblyException.java, gnu/java/beans/decoder/BooleanHandler.java, gnu/java/beans/decoder/ByteHandler.java, gnu/java/beans/decoder/CharHandler.java, gnu/java/beans/decoder/ClassHandler.java, gnu/java/beans/decoder/ConstructorContext.java, gnu/java/beans/decoder/Context.java, gnu/java/beans/decoder/DecoderContext.java, gnu/java/beans/decoder/DefaultExceptionListener.java, gnu/java/beans/decoder/DoubleHandler.java, gnu/java/beans/decoder/DummyContext.java, gnu/java/beans/decoder/DummyHandler.java, gnu/java/beans/decoder/ElementHandler.java, gnu/java/beans/decoder/FloatHandler.java, gnu/java/beans/decoder/GrowableArrayContext.java, gnu/java/beans/decoder/IndexContext.java, gnu/java/beans/decoder/IntHandler.java, gnu/java/beans/decoder/JavaHandler.java, gnu/java/beans/decoder/LongHandler.java, gnu/java/beans/decoder/MethodContext.java, gnu/java/beans/decoder/MethodFinder.java, gnu/java/beans/decoder/NullHandler.java, gnu/java/beans/decoder/ObjectContext.java, gnu/java/beans/decoder/ObjectHandler.java, gnu/java/beans/decoder/PersistenceParser.java, gnu/java/beans/decoder/PropertyContext.java, gnu/java/beans/decoder/ShortHandler.java, gnu/java/beans/decoder/SimpleHandler.java, gnu/java/beans/decoder/StaticMethodContext.java, gnu/java/beans/decoder/StringHandler.java, gnu/java/beans/decoder/VoidHandler.java: New class implementing java.beans.XMLDecoder decoding functionality. * java/beans/XMLDecoder.java: New class. From-SVN: r95287 --- .../decoder/AbstractCreatableObjectContext.java | 113 +++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 libjava/gnu/java/beans/decoder/AbstractCreatableObjectContext.java (limited to 'libjava/gnu/java/beans/decoder/AbstractCreatableObjectContext.java') diff --git a/libjava/gnu/java/beans/decoder/AbstractCreatableObjectContext.java b/libjava/gnu/java/beans/decoder/AbstractCreatableObjectContext.java new file mode 100644 index 0000000..e2943e2 --- /dev/null +++ b/libjava/gnu/java/beans/decoder/AbstractCreatableObjectContext.java @@ -0,0 +1,113 @@ +/* gnu.java.beans.decoder.AbstractCreatableContext + Copyright (C) 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ +package gnu.java.beans.decoder; + + +/** AbstractCreatableObjectContext is the base class for all Context implementations + * which create a result object in their lifetime. It provides means for preventing + * to create the object twice. + * + * @author Robert Schuster + * + */ +abstract class AbstractCreatableObjectContext extends AbstractObjectContext +{ + AbstractCreatableObjectContext() + { + } + + /** Adds a parameter object to this Context if the result object has not been + * created yet. Otherwise an AssemblyException is thrown that indicates a wrong + * behavior of the decoder. + */ + public final void addParameterObject(Object o) throws AssemblyException + { + if (object == null) + addParameterObjectImpl(o); + else + throw new AssemblyException(new IllegalStateException("No more parameter objects are allowed when the object as already been created.")); + } + + /** Adds a parameter object to this Context. Implement this without caring + * for illegal states because this has been done already. + * + * @param obj The parameter object to be added. + */ + protected abstract void addParameterObjectImpl(Object obj); + + /** Creates the result object if it does not exist already. + */ + public final void notifyStatement(Context outerContext) + throws AssemblyException + { + if (object != null) + return; + + object = createObject(outerContext); + } + + /** Creates the result object. This method is called only once. Implement this + * without checking for double invocations as this is already being prevented. + * + * @param outerContext The Context that exists around this one. + * @return The result object. + * @throws AssemblerException if the object creation fails somehow. + */ + protected abstract Object createObject(Context outerContext) + throws AssemblyException; + + /* (non-Javadoc) + * @see gnu.java.beans.decoder.Context#endContext(gnu.java.beans.decoder.Context) + */ + public final Object endContext(Context outerContext) + throws AssemblyException + { + notifyStatement(outerContext); + return object; + } + + /* (non-Javadoc) + * @see gnu.java.beans.decoder.Context#subContextFailed() + */ + public boolean subContextFailed() + { + /* Returns true when the AbstractCreatableObjectContext has not created the result object yet + * (A failed subcontext automatically lets this context fail too.) + */ + return object == null; + } +} -- cgit v1.1