diff -r 88b85470e72c -r f50545b5e2f1 src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/ElementBeanInfoImpl.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/ElementBeanInfoImpl.java Tue Mar 06 16:09:35 2012 -0800 @@ -0,0 +1,351 @@ +/* + * Copyright (c) 1997, 2011, 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; + +import java.io.IOException; +import java.lang.reflect.Constructor; +import java.lang.reflect.InvocationTargetException; + +import javax.xml.bind.JAXBElement; +import javax.xml.bind.JAXBException; +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; + +import com.sun.xml.internal.bind.api.AccessorException; +import com.sun.xml.internal.bind.v2.model.core.PropertyKind; +import com.sun.xml.internal.bind.v2.model.nav.Navigator; +import com.sun.xml.internal.bind.v2.model.runtime.RuntimeElementInfo; +import com.sun.xml.internal.bind.v2.model.runtime.RuntimePropertyInfo; +import com.sun.xml.internal.bind.v2.runtime.property.Property; +import com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory; +import com.sun.xml.internal.bind.v2.runtime.property.UnmarshallerChain; +import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor; +import com.sun.xml.internal.bind.v2.runtime.unmarshaller.ChildLoader; +import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Discarder; +import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Intercepter; +import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Loader; +import com.sun.xml.internal.bind.v2.runtime.unmarshaller.TagName; +import com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext; +import com.sun.xml.internal.bind.v2.util.QNameMap; + +import org.xml.sax.SAXException; + +/** + * {@link JaxBeanInfo} implementation for {@link RuntimeElementInfo}. + * + * @author Kohsuke Kawaguchi + */ +public final class ElementBeanInfoImpl extends JaxBeanInfo { + + private Loader loader; + + private final Property property; + + // used to create new instances of JAXBElement. + private final QName tagName; + public final Class expectedType; + private final Class scope; + + /** + * If non-null, use this to create an instance. + * It takes one value. + */ + private final Constructor constructor; + + ElementBeanInfoImpl(JAXBContextImpl grammar, RuntimeElementInfo rei) { + super(grammar,rei,(Class)rei.getType(),true,false,true); + + this.property = PropertyFactory.create(grammar,rei.getProperty()); + + tagName = rei.getElementName(); + expectedType = Navigator.REFLECTION.erasure(rei.getContentInMemoryType()); + scope = rei.getScope()==null ? JAXBElement.GlobalScope.class : rei.getScope().getClazz(); + + Class type = Navigator.REFLECTION.erasure(rei.getType()); + if(type==JAXBElement.class) + constructor = null; + else { + try { + constructor = type.getConstructor(expectedType); + } catch (NoSuchMethodException e) { + NoSuchMethodError x = new NoSuchMethodError("Failed to find the constructor for " + type + " with " + expectedType); + x.initCause(e); + throw x; + } + } + } + + /** + * The constructor for the sole instanceof {@link JaxBeanInfo} for + * handling user-created {@link JAXBElement}. + * + * Such {@link JaxBeanInfo} is used only for marshalling. + * + * This is a hack. + */ + protected ElementBeanInfoImpl(final JAXBContextImpl grammar) { + super(grammar,null,JAXBElement.class,true,false,true); + tagName = null; + expectedType = null; + scope = null; + constructor = null; + + this.property = new Property() { + public void reset(JAXBElement o) { + throw new UnsupportedOperationException(); + } + + public void serializeBody(JAXBElement e, XMLSerializer target, Object outerPeer) throws SAXException, IOException, XMLStreamException { + Class scope = e.getScope(); + if(e.isGlobalScope()) scope = null; + QName n = e.getName(); + ElementBeanInfoImpl bi = grammar.getElement(scope,n); + if(bi==null) { + // infer what to do from the type + JaxBeanInfo tbi; + try { + tbi = grammar.getBeanInfo(e.getDeclaredType(),true); + } catch (JAXBException x) { + // if e.getDeclaredType() isn't known to this JAXBContext + target.reportError(null,x); + return; + } + Object value = e.getValue(); + target.startElement(n.getNamespaceURI(),n.getLocalPart(),n.getPrefix(),null); + if(value==null) { + target.writeXsiNilTrue(); + } else { + target.childAsXsiType(value,"value",tbi, false); + } + target.endElement(); + } else { + try { + bi.property.serializeBody(e,target,e); + } catch (AccessorException x) { + target.reportError(null,x); + } + } + } + + public void serializeURIs(JAXBElement o, XMLSerializer target) { + } + + public boolean hasSerializeURIAction() { + return false; + } + + public String getIdValue(JAXBElement o) { + return null; + } + + public PropertyKind getKind() { + return PropertyKind.ELEMENT; + } + + public void buildChildElementUnmarshallers(UnmarshallerChain chain, QNameMap handlers) { + } + + public Accessor getElementPropertyAccessor(String nsUri, String localName) { + throw new UnsupportedOperationException(); + } + + public void wrapUp() { + } + + public RuntimePropertyInfo getInfo() { + return property.getInfo(); + } + + public boolean isHiddenByOverride() { + return false; + } + + public void setHiddenByOverride(boolean hidden) { + throw new UnsupportedOperationException("Not supported on jaxbelements."); + } + + public String getFieldName() { + return null; + } + + }; + } + + /** + * Use the previous {@link UnmarshallingContext.State}'s target to store + * {@link JAXBElement} object to be unmarshalled. This allows the property {@link Loader} + * to correctly find the parent object. + * This is a hack. + */ + private final class IntercepterLoader extends Loader implements Intercepter { + private final Loader core; + + public IntercepterLoader(Loader core) { + this.core = core; + } + + @Override + public final void startElement(UnmarshallingContext.State state, TagName ea) throws SAXException { + state.loader = core; + state.intercepter = this; + + // TODO: make sure there aren't too many duplicate of this code + // create the object to unmarshal + Object child; + UnmarshallingContext context = state.getContext(); + + // let's see if we can reuse the existing peer object + child = context.getOuterPeer(); + + if(child!=null && jaxbType!=child.getClass()) + child = null; // unexpected type. + + if(child!=null) + reset((JAXBElement)child,context); + + if(child==null) + child = context.createInstance(ElementBeanInfoImpl.this); + + fireBeforeUnmarshal(ElementBeanInfoImpl.this, child, state); + + context.recordOuterPeer(child); + UnmarshallingContext.State p = state.prev; + p.backup = p.target; + p.target = child; + + core.startElement(state,ea); + } + + public Object intercept(UnmarshallingContext.State state, Object o) throws SAXException { + JAXBElement e = (JAXBElement)state.target; + state.target = state.backup; + state.backup = null; + + if (state.nil) { + e.setNil(true); + state.nil = false; + } + + if(o!=null) + // if the value is a leaf type, it's often already set to the element + // through Accessor. + e.setValue(o); + + fireAfterUnmarshal(ElementBeanInfoImpl.this, e, state); + + return e; + } + } + + public String getElementNamespaceURI(JAXBElement e) { + return e.getName().getNamespaceURI(); + } + + public String getElementLocalName(JAXBElement e) { + return e.getName().getLocalPart(); + } + + public Loader getLoader(JAXBContextImpl context, boolean typeSubstitutionCapable) { + if(loader==null) { + // this has to be done lazily to avoid cyclic reference issue + UnmarshallerChain c = new UnmarshallerChain(context); + QNameMap result = new QNameMap(); + property.buildChildElementUnmarshallers(c,result); + if(result.size()==1) + // for ElementBeanInfoImpl created from RuntimeElementInfo + this.loader = new IntercepterLoader(result.getOne().getValue().loader); + else + // for special ElementBeanInfoImpl only used for marshalling + this.loader = Discarder.INSTANCE; + } + return loader; + } + + public final JAXBElement createInstance(UnmarshallingContext context) throws IllegalAccessException, InvocationTargetException, InstantiationException { + return createInstanceFromValue(null); + } + + public final JAXBElement createInstanceFromValue(Object o) throws IllegalAccessException, InvocationTargetException, InstantiationException { + if(constructor==null) + return new JAXBElement(tagName,expectedType,scope,o); + else + return constructor.newInstance(o); + } + + public boolean reset(JAXBElement e, UnmarshallingContext context) { + e.setValue(null); + return true; + } + + public String getId(JAXBElement e, XMLSerializer target) { + // TODO: is this OK? Should we be returning the ID value of the type property? + /* + There's one case where we JAXBElement needs to be designated as ID, + and that is when there's a global element whose type is ID. + */ + Object o = e.getValue(); + if(o instanceof String) + return (String)o; + else + return null; + } + + public void serializeBody(JAXBElement element, XMLSerializer target) throws SAXException, IOException, XMLStreamException { + try { + property.serializeBody(element,target,null); + } catch (AccessorException x) { + target.reportError(null,x); + } + } + + public void serializeRoot(JAXBElement e, XMLSerializer target) throws SAXException, IOException, XMLStreamException { + serializeBody(e,target); + } + + public void serializeAttributes(JAXBElement e, XMLSerializer target) { + // noop + } + + public void serializeURIs(JAXBElement e, XMLSerializer target) { + // noop + } + + public final Transducer getTransducer() { + return null; + } + + @Override + public void wrapUp() { + super.wrapUp(); + property.wrapUp(); + } + + @Override + public void link(JAXBContextImpl grammar) { + super.link(grammar); + getLoader(grammar,true); // make sure to build them, if we hadn't done so + } +}