jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/ElementBeanInfoImpl.java@b0610cd08440

     1 /*

     2  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.xml.internal.bind.v2.runtime;

    28 import java.io.IOException;

    29 import java.lang.reflect.Constructor;

    30 import java.lang.reflect.InvocationTargetException;

    32 import javax.xml.bind.JAXBElement;

    33 import javax.xml.bind.JAXBException;

    34 import javax.xml.namespace.QName;

    35 import javax.xml.stream.XMLStreamException;

    37 import com.sun.xml.internal.bind.api.AccessorException;

    38 import com.sun.xml.internal.bind.v2.model.core.PropertyKind;

    39 import com.sun.xml.internal.bind.v2.model.nav.Navigator;

    40 import com.sun.xml.internal.bind.v2.model.runtime.RuntimeElementInfo;

    41 import com.sun.xml.internal.bind.v2.model.runtime.RuntimePropertyInfo;

    42 import com.sun.xml.internal.bind.v2.runtime.property.Property;

    43 import com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory;

    44 import com.sun.xml.internal.bind.v2.runtime.property.UnmarshallerChain;

    45 import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor;

    46 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.ChildLoader;

    47 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Discarder;

    48 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Intercepter;

    49 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Loader;

    50 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.TagName;

    51 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext;

    52 import com.sun.xml.internal.bind.v2.util.QNameMap;

    54 import org.xml.sax.SAXException;

    56 /**

    57  * {@link JaxBeanInfo} implementation for {@link RuntimeElementInfo}.

    58  *

    59  * @author Kohsuke Kawaguchi

    60  */

    61 public final class ElementBeanInfoImpl extends JaxBeanInfo<JAXBElement> {

    63     private Loader loader;

    65     private final Property property;

    67     // used to create new instances of JAXBElement.

    68     private final QName tagName;

    69     public final Class expectedType;

    70     private final Class scope;

    72     /**

    73      * If non-null, use this to create an instance.

    74      * It takes one value.

    75      */

    76     private final Constructor<? extends JAXBElement> constructor;

    78     ElementBeanInfoImpl(JAXBContextImpl grammar, RuntimeElementInfo rei) {

    79         super(grammar,rei,(Class<JAXBElement>)rei.getType(),true,false,true);

    81         this.property = PropertyFactory.create(grammar,rei.getProperty());

    83         tagName = rei.getElementName();

    84         expectedType = Navigator.REFLECTION.erasure(rei.getContentInMemoryType());

    85         scope = rei.getScope()==null ? JAXBElement.GlobalScope.class : rei.getScope().getClazz();

    87         Class type = Navigator.REFLECTION.erasure(rei.getType());

    88         if(type==JAXBElement.class)

    89             constructor = null;

    90         else {

    91             try {

    92                 constructor = type.getConstructor(expectedType);

    93             } catch (NoSuchMethodException e) {

    94                 NoSuchMethodError x = new NoSuchMethodError("Failed to find the constructor for " + type + " with " + expectedType);

    95                 x.initCause(e);

    96                 throw x;

    97             }

    98         }

    99     }

   101     /**

   102      * The constructor for the sole instanceof {@link JaxBeanInfo} for

   103      * handling user-created {@link JAXBElement}.

   104      *

   105      * Such {@link JaxBeanInfo} is used only for marshalling.

   106      *

   107      * This is a hack.

   108      */

   109     protected ElementBeanInfoImpl(final JAXBContextImpl grammar) {

   110         super(grammar,null,JAXBElement.class,true,false,true);

   111         tagName = null;

   112         expectedType = null;

   113         scope = null;

   114         constructor = null;

   116         this.property = new Property<JAXBElement>() {

   117             public void reset(JAXBElement o) {

   118                 throw new UnsupportedOperationException();

   119             }

   121             public void serializeBody(JAXBElement e, XMLSerializer target, Object outerPeer) throws SAXException, IOException, XMLStreamException {

   122                 Class scope = e.getScope();

   123                 if(e.isGlobalScope())   scope = null;

   124                 QName n = e.getName();

   125                 ElementBeanInfoImpl bi = grammar.getElement(scope,n);

   126                 if(bi==null) {

   127                     // infer what to do from the type

   128                     JaxBeanInfo tbi;

   129                     try {

   130                         tbi = grammar.getBeanInfo(e.getDeclaredType(),true);

   131                     } catch (JAXBException x) {

   132                         // if e.getDeclaredType() isn't known to this JAXBContext

   133                         target.reportError(null,x);

   134                         return;

   135                     }

   136                     Object value = e.getValue();

   137                     target.startElement(n.getNamespaceURI(),n.getLocalPart(),n.getPrefix(),null);

   138                     if(value==null) {

   139                         target.writeXsiNilTrue();

   140                     } else {

   141                         target.childAsXsiType(value,"value",tbi, false);

   142                     }

   143                     target.endElement();

   144                 } else {

   145                     try {

   146                         bi.property.serializeBody(e,target,e);

   147                     } catch (AccessorException x) {

   148                         target.reportError(null,x);

   149                     }

   150                 }

   151             }

   153             public void serializeURIs(JAXBElement o, XMLSerializer target) {

   154             }

   156             public boolean hasSerializeURIAction() {

   157                 return false;

   158             }

   160             public String getIdValue(JAXBElement o) {

   161                 return null;

   162             }

   164             public PropertyKind getKind() {

   165                 return PropertyKind.ELEMENT;

   166             }

   168             public void buildChildElementUnmarshallers(UnmarshallerChain chain, QNameMap<ChildLoader> handlers) {

   169             }

   171             public Accessor getElementPropertyAccessor(String nsUri, String localName) {

   172                 throw new UnsupportedOperationException();

   173             }

   175             public void wrapUp() {

   176             }

   178             public RuntimePropertyInfo getInfo() {

   179                 return property.getInfo();

   180             }

   182             public boolean isHiddenByOverride() {

   183                 return false;

   184             }

   186             public void setHiddenByOverride(boolean hidden) {

   187                 throw new UnsupportedOperationException("Not supported on jaxbelements.");

   188             }

   190             public String getFieldName() {

   191                 return null;

   192             }

   194         };

   195     }

   197     /**

   198      * Use the previous {@link UnmarshallingContext.State}'s target to store

   199      * {@link JAXBElement} object to be unmarshalled. This allows the property {@link Loader}

   200      * to correctly find the parent object.

   201      * This is a hack.

   202      */

   203     private final class IntercepterLoader extends Loader implements Intercepter {

   204         private final Loader core;

   206         public IntercepterLoader(Loader core) {

   207             this.core = core;

   208         }

   210         @Override

   211         public final void startElement(UnmarshallingContext.State state, TagName ea) throws SAXException {

   212             state.loader = core;

   213             state.intercepter = this;

   215             // TODO: make sure there aren't too many duplicate of this code

   216             // create the object to unmarshal

   217             Object child;

   218             UnmarshallingContext context = state.getContext();

   220             // let's see if we can reuse the existing peer object

   221             child = context.getOuterPeer();

   223             if(child!=null && jaxbType!=child.getClass())

   224                 child = null;   // unexpected type.

   226             if(child!=null)

   227                 reset((JAXBElement)child,context);

   229             if(child==null)

   230                 child = context.createInstance(ElementBeanInfoImpl.this);

   232             fireBeforeUnmarshal(ElementBeanInfoImpl.this, child, state);

   234             context.recordOuterPeer(child);

   235             UnmarshallingContext.State p = state.prev;

   236             p.backup = p.target;

   237             p.target = child;

   239             core.startElement(state,ea);

   240         }

   242         public Object intercept(UnmarshallingContext.State state, Object o) throws SAXException {

   243             JAXBElement e = (JAXBElement)state.target;

   244             state.target = state.backup;

   245             state.backup = null;

   247             if (state.nil) {

   248                 e.setNil(true);

   249                 state.nil = false;

   250             }

   252             if(o!=null)

   253                 // if the value is a leaf type, it's often already set to the element

   254                 // through Accessor.

   255                 e.setValue(o);

   257             fireAfterUnmarshal(ElementBeanInfoImpl.this, e, state);

   259             return e;

   260         }

   261     }

   263     public String getElementNamespaceURI(JAXBElement e) {

   264         return e.getName().getNamespaceURI();

   265     }

   267     public String getElementLocalName(JAXBElement e) {

   268         return e.getName().getLocalPart();

   269     }

   271     public Loader getLoader(JAXBContextImpl context, boolean typeSubstitutionCapable) {

   272         if(loader==null) {

   273             // this has to be done lazily to avoid cyclic reference issue

   274             UnmarshallerChain c = new UnmarshallerChain(context);

   275             QNameMap<ChildLoader> result = new QNameMap<ChildLoader>();

   276             property.buildChildElementUnmarshallers(c,result);

   277             if(result.size()==1)

   278                 // for ElementBeanInfoImpl created from RuntimeElementInfo

   279                 this.loader = new IntercepterLoader(result.getOne().getValue().loader);

   280             else

   281                 // for special ElementBeanInfoImpl only used for marshalling

   282                 this.loader = Discarder.INSTANCE;

   283         }

   284         return loader;

   285     }

   287     public final JAXBElement createInstance(UnmarshallingContext context) throws IllegalAccessException, InvocationTargetException, InstantiationException {

   288         return createInstanceFromValue(null);

   289     }

   291     public final JAXBElement createInstanceFromValue(Object o) throws IllegalAccessException, InvocationTargetException, InstantiationException {

   292         if(constructor==null)

   293             return new JAXBElement(tagName,expectedType,scope,o);

   294         else

   295             return constructor.newInstance(o);

   296     }

   298     public boolean reset(JAXBElement e, UnmarshallingContext context) {

   299         e.setValue(null);

   300         return true;

   301     }

   303     public String getId(JAXBElement e, XMLSerializer target) {

   304         // TODO: is this OK? Should we be returning the ID value of the type property?

   305         /*

   306             There's one case where we JAXBElement needs to be designated as ID,

   307             and that is when there's a global element whose type is ID.

   308         */

   309         Object o = e.getValue();

   310         if(o instanceof String)

   311             return (String)o;

   312         else

   313             return null;

   314     }

   316     public void serializeBody(JAXBElement element, XMLSerializer target) throws SAXException, IOException, XMLStreamException {

   317         try {

   318             property.serializeBody(element,target,null);

   319         } catch (AccessorException x) {

   320             target.reportError(null,x);

   321         }

   322     }

   324     public void serializeRoot(JAXBElement e, XMLSerializer target) throws SAXException, IOException, XMLStreamException {

   325         serializeBody(e,target);

   326     }

   328     public void serializeAttributes(JAXBElement e, XMLSerializer target) {

   329         // noop

   330     }

   332     public void serializeURIs(JAXBElement e, XMLSerializer target) {

   333         // noop

   334     }

   336     public final Transducer<JAXBElement> getTransducer() {

   337         return null;

   338     }

   340     @Override

   341     public void wrapUp() {

   342         super.wrapUp();

   343         property.wrapUp();

   344     }

   346     @Override

   347     public void link(JAXBContextImpl grammar) {

   348         super.link(grammar);

   349         getLoader(grammar,true);    // make sure to build them, if we hadn't done so

   350     }

   351 }

Mercurial > jdk8-mips64-public > jaxws / file revision

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/ElementBeanInfoImpl.java@b0610cd08440

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/ElementBeanInfoImpl.java