jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/ElementBeanInfoImpl.java@e530533619ec

     1 /*

     2  * Copyright (c) 1997, 2014, 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.runtime.RuntimeElementInfo;

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

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

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

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

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

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

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

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

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

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

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

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

    53 import org.xml.sax.SAXException;

    55 /**

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

    57  *

    58  * @author Kohsuke Kawaguchi

    59  */

    60 public final class ElementBeanInfoImpl extends JaxBeanInfo<JAXBElement> {

    62     private Loader loader;

    64     private final Property property;

    66     // used to create new instances of JAXBElement.

    67     private final QName tagName;

    68     public final Class expectedType;

    69     private final Class scope;

    71     /**

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

    73      * It takes one value.

    74      */

    75     private final Constructor<? extends JAXBElement> constructor;

    77     ElementBeanInfoImpl(JAXBContextImpl grammar, RuntimeElementInfo rei) {

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

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

    82         tagName = rei.getElementName();

    83         expectedType = (Class) Utils.REFLECTION_NAVIGATOR.erasure(rei.getContentInMemoryType());

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

    86         Class type = (Class) Utils.REFLECTION_NAVIGATOR.erasure(rei.getType());

    87         if(type==JAXBElement.class)

    88             constructor = null;

    89         else {

    90             try {

    91                 constructor = type.getConstructor(expectedType);

    92             } catch (NoSuchMethodException e) {

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

    94                 x.initCause(e);

    95                 throw x;

    96             }

    97         }

    98     }

   100     /**

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

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

   103      *

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

   105      *

   106      * This is a hack.

   107      */

   108     protected ElementBeanInfoImpl(final JAXBContextImpl grammar) {

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

   110         tagName = null;

   111         expectedType = null;

   112         scope = null;

   113         constructor = null;

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

   116             public void reset(JAXBElement o) {

   117                 throw new UnsupportedOperationException();

   118             }

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

   121                 Class scope = e.getScope();

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

   123                 QName n = e.getName();

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

   125                 if(bi==null) {

   126                     // infer what to do from the type

   127                     JaxBeanInfo tbi;

   128                     try {

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

   130                     } catch (JAXBException x) {

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

   132                         target.reportError(null,x);

   133                         return;

   134                     }

   135                     Object value = e.getValue();

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

   137                     if(value==null) {

   138                         target.writeXsiNilTrue();

   139                     } else {

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

   141                     }

   142                     target.endElement();

   143                 } else {

   144                     try {

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

   146                     } catch (AccessorException x) {

   147                         target.reportError(null,x);

   148                     }

   149                 }

   150             }

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

   153             }

   155             public boolean hasSerializeURIAction() {

   156                 return false;

   157             }

   159             public String getIdValue(JAXBElement o) {

   160                 return null;

   161             }

   163             public PropertyKind getKind() {

   164                 return PropertyKind.ELEMENT;

   165             }

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

   168             }

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

   171                 throw new UnsupportedOperationException();

   172             }

   174             public void wrapUp() {

   175             }

   177             public RuntimePropertyInfo getInfo() {

   178                 return property.getInfo();

   179             }

   181             public boolean isHiddenByOverride() {

   182                 return false;

   183             }

   185             public void setHiddenByOverride(boolean hidden) {

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

   187             }

   189             public String getFieldName() {

   190                 return null;

   191             }

   193         };

   194     }

   196     /**

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

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

   199      * to correctly find the parent object.

   200      * This is a hack.

   201      */

   202     private final class IntercepterLoader extends Loader implements Intercepter {

   203         private final Loader core;

   205         public IntercepterLoader(Loader core) {

   206             this.core = core;

   207         }

   209         @Override

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

   211             state.setLoader(core);

   212             state.setIntercepter(this);

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

   215             // create the object to unmarshal

   216             Object child;

   217             UnmarshallingContext context = state.getContext();

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

   220             child = context.getOuterPeer();

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

   223                 child = null;   // unexpected type.

   225             if(child!=null)

   226                 reset((JAXBElement)child,context);

   228             if(child==null)

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

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

   233             context.recordOuterPeer(child);

   234             UnmarshallingContext.State p = state.getPrev();

   235             p.setBackup(p.getTarget());

   236             p.setTarget(child);

   238             core.startElement(state,ea);

   239         }

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

   242             JAXBElement e = (JAXBElement)state.getTarget();

   243             state.setTarget(state.getBackup());

   244             state.setBackup(null);

   246             if (state.isNil()) {

   247                 e.setNil(true);

   248                 state.setNil(false);

   249             }

   251             if(o!=null)

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

   253                 // through Accessor.

   254                 e.setValue(o);

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

   258             return e;

   259         }

   260     }

   262     public String getElementNamespaceURI(JAXBElement e) {

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

   264     }

   266     public String getElementLocalName(JAXBElement e) {

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

   268     }

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

   271         if(loader==null) {

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

   273             UnmarshallerChain c = new UnmarshallerChain(context);

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

   275             property.buildChildElementUnmarshallers(c,result);

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

   277                 // for ElementBeanInfoImpl created from RuntimeElementInfo

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

   279             else

   280                 // for special ElementBeanInfoImpl only used for marshalling

   281                 this.loader = Discarder.INSTANCE;

   282         }

   283         return loader;

   284     }

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

   287         return createInstanceFromValue(null);

   288     }

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

   291         if(constructor==null)

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

   293         else

   294             return constructor.newInstance(o);

   295     }

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

   298         e.setValue(null);

   299         return true;

   300     }

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

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

   304         /*

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

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

   307         */

   308         Object o = e.getValue();

   309         if(o instanceof String)

   310             return (String)o;

   311         else

   312             return null;

   313     }

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

   316         try {

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

   318         } catch (AccessorException x) {

   319             target.reportError(null,x);

   320         }

   321     }

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

   324         serializeBody(e,target);

   325     }

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

   328         // noop

   329     }

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

   332         // noop

   333     }

   335     public final Transducer<JAXBElement> getTransducer() {

   336         return null;

   337     }

   339     @Override

   340     public void wrapUp() {

   341         super.wrapUp();

   342         property.wrapUp();

   343     }

   345     @Override

   346     public void link(JAXBContextImpl grammar) {

   347         super.link(grammar);

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

   349     }

   350 }

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

src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/ElementBeanInfoImpl.java@e530533619ec

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