| /* |
| * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.xml.internal.bind.v2.runtime.unmarshaller; |
| |
| import com.sun.xml.internal.bind.api.AccessorException; |
| import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor; |
| import com.sun.xml.internal.bind.v2.runtime.reflect.Lister; |
| |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Holds the information about packing scope. |
| * |
| * <p> |
| * When no packing is started yet, all the fields should be set to null. |
| * |
| * @author Kohsuke Kawaguchi |
| */ |
| public final class Scope<BeanT,PropT,ItemT,PackT> { |
| |
| public final UnmarshallingContext context; |
| |
| private BeanT bean; |
| private Accessor<BeanT,PropT> acc; |
| private PackT pack; |
| private Lister<BeanT,PropT,ItemT,PackT> lister; |
| |
| Scope(UnmarshallingContext context) { |
| this.context = context; |
| } |
| |
| /** |
| * Returns true if this scope object is filled by a packing in progress. |
| */ |
| public boolean hasStarted() { |
| return bean!=null; |
| } |
| |
| /** |
| * Initializes all the fields to null. |
| */ |
| public void reset() { |
| if(bean==null) { |
| // already initialized |
| assert clean(); |
| return; |
| } |
| |
| bean = null; |
| acc = null; |
| pack = null; |
| lister = null; |
| } |
| |
| /** |
| * Finishes up the current packing in progress (if any) and |
| * resets this object. |
| */ |
| public void finish() throws AccessorException { |
| if(hasStarted()) { |
| lister.endPacking(pack,bean,acc); |
| reset(); |
| } |
| assert clean(); |
| } |
| |
| private boolean clean() { |
| return bean==null && acc==null && pack==null && lister==null; |
| } |
| |
| /** |
| * Adds a new item to this packing scope. |
| */ |
| public void add( Accessor<BeanT,PropT> acc, Lister<BeanT,PropT,ItemT,PackT> lister, ItemT value) throws SAXException{ |
| try { |
| if(!hasStarted()) { |
| this.bean = (BeanT)context.getCurrentState().getTarget(); |
| this.acc = acc; |
| this.lister = lister; |
| this.pack = lister.startPacking(bean,acc); |
| } |
| |
| lister.addToPack(pack,value); |
| } catch (AccessorException e) { |
| Loader.handleGenericException(e,true); |
| // recover from this error by ignoring future items. |
| this.lister = Lister.getErrorInstance(); |
| this.acc = Accessor.getErrorInstance(); |
| } |
| } |
| |
| /** |
| * Starts the packing scope, without adding any item. |
| * |
| * This allows us to return an empty pack, thereby allowing the user |
| * to distinguish empty array vs null array. |
| */ |
| public void start( Accessor<BeanT,PropT> acc, Lister<BeanT,PropT,ItemT,PackT> lister) throws SAXException{ |
| try { |
| if(!hasStarted()) { |
| this.bean = (BeanT)context.getCurrentState().getTarget(); |
| this.acc = acc; |
| this.lister = lister; |
| this.pack = lister.startPacking(bean,acc); |
| } |
| } catch (AccessorException e) { |
| Loader.handleGenericException(e,true); |
| // recover from this error by ignoring future items. |
| this.lister = Lister.getErrorInstance(); |
| this.acc = Accessor.getErrorInstance(); |
| } |
| } |
| } |