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

 /*

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  * 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

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

 import java.io.IOException;

 import java.lang.reflect.Modifier;

 import javax.xml.bind.JAXBElement;

 import javax.xml.stream.XMLStreamException;

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

 import com.sun.xml.internal.bind.v2.model.core.ID;

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

 import com.sun.xml.internal.bind.v2.model.runtime.RuntimeElementPropertyInfo;

 import com.sun.xml.internal.bind.v2.model.runtime.RuntimeTypeRef;

 import com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl;

 import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl;

 import com.sun.xml.internal.bind.v2.runtime.Name;

 import com.sun.xml.internal.bind.v2.runtime.XMLSerializer;

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

 import com.sun.xml.internal.bind.v2.runtime.reflect.TransducedAccessor;

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

 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.DefaultValueLoaderDecorator;

 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.LeafPropertyLoader;

 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.LeafPropertyXsiLoader;

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

 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.XsiNilLoader;

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

 import org.xml.sax.SAXException;

 /**

  * {@link Property} that contains a leaf value.

  *

  * @author Kohsuke Kawaguchi (kk@kohsuke.org)

  */

 final class SingleElementLeafProperty<BeanT> extends PropertyImpl<BeanT> {

     private final Name tagName;

     private final boolean nillable;

     private final Accessor acc;

     private final String defaultValue;

     private final TransducedAccessor<BeanT> xacc;

     private final boolean improvedXsiTypeHandling;

     private final boolean idRef;

     public SingleElementLeafProperty(JAXBContextImpl context, RuntimeElementPropertyInfo prop) {

         super(context, prop);

         RuntimeTypeRef ref = prop.getTypes().get(0);

         tagName = context.nameBuilder.createElementName(ref.getTagName());

         assert tagName != null;

         nillable = ref.isNillable();

         defaultValue = ref.getDefaultValue();

         this.acc = prop.getAccessor().optimize(context);

         xacc = TransducedAccessor.get(context, ref);

         assert xacc != null;

         improvedXsiTypeHandling = context.improvedXsiTypeHandling;

         idRef = ref.getSource().id() == ID.IDREF;

     }

     public void reset(BeanT o) throws AccessorException {

         acc.set(o, null);

     }

     public String getIdValue(BeanT bean) throws AccessorException, SAXException {

         return xacc.print(bean).toString();

     }

     @Override

     public void serializeBody(BeanT o, XMLSerializer w, Object outerPeer) throws SAXException, AccessorException, IOException, XMLStreamException {

         boolean hasValue = xacc.hasValue(o);

         Object obj = null;

         try {

             obj = acc.getUnadapted(o);

         } catch (AccessorException ae) {

             ; // noop

         }

         Class valueType = acc.getValueType();

         // check for different type than expected. If found, add xsi:type declaration

         if (xsiTypeNeeded(o, w, obj, valueType)) {

             w.startElement(tagName, outerPeer);

             w.childAsXsiType(obj, fieldName, w.grammar.getBeanInfo(valueType), false);

             w.endElement();

         } else {  // current type is expected

             if (hasValue) {

                 xacc.writeLeafElement(w, tagName, o, fieldName);

             } else if (nillable) {

                 w.startElement(tagName, null);

                 w.writeXsiNilTrue();

                 w.endElement();

             }

         }

     }

     /**

      * Checks if xsi type needed to be specified

      */

     private boolean xsiTypeNeeded(BeanT bean, XMLSerializer w, Object value, Class valueTypeClass) {

         if (!improvedXsiTypeHandling) // improved xsi type set

             return false;

         if (acc.isAdapted()) // accessor is not adapted

             return false;

         if (value == null) // value is not null

             return false;

         if (value.getClass().equals(valueTypeClass)) // value represented by different class

             return false;

         if (idRef) // IDREF

             return false;

         if (valueTypeClass.isPrimitive()) // is not primitive

             return false;

         return acc.isValueTypeAbstractable() || isNillableAbstract(bean, w.grammar, value, valueTypeClass);

     }

     /**

      * Checks if element is nillable and represented by abstract class.

      */

     private boolean isNillableAbstract(BeanT bean, JAXBContextImpl context, Object value, Class valueTypeClass) {

         if (!nillable) // check if element is nillable

             return false;

         if (valueTypeClass != Object.class) // required type wasn't recognized

             return false;

         if (bean.getClass() != JAXBElement.class) // is JAXBElement

             return false;

         JAXBElement jaxbElement = (JAXBElement) bean;

         Class valueClass = value.getClass();

         Class declaredTypeClass = jaxbElement.getDeclaredType();

         if (declaredTypeClass.equals(valueClass)) // JAXBElement<class> is different from unadapted class)

             return false;

         if (!declaredTypeClass.isAssignableFrom(valueClass)) // and is subclass from it

             return false;

         if (!Modifier.isAbstract(declaredTypeClass.getModifiers())) // declared class is abstract

             return false;

         return acc.isAbstractable(declaredTypeClass); // and is not builtin type

     }

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

         Loader l = new LeafPropertyLoader(xacc);

         if (defaultValue != null)

             l = new DefaultValueLoaderDecorator(l, defaultValue);

         if (nillable || chain.context.allNillable)

             l = new XsiNilLoader.Single(l, acc);

         // LeafPropertyXsiLoader doesn't work well with nillable elements

         if (improvedXsiTypeHandling)

             l = new LeafPropertyXsiLoader(l, xacc, acc);

         handlers.put(tagName, new ChildLoader(l, null));

     }

     public PropertyKind getKind() {

         return PropertyKind.ELEMENT;

     }

     @Override

     public Accessor getElementPropertyAccessor(String nsUri, String localName) {

         if (tagName.equals(nsUri, localName))

             return acc;

         else

             return null;

     }

 }