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

import java.io.IOException;

import javax.xml.bind.ValidationEvent;
import javax.xml.bind.helpers.ValidationEventImpl;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;

import com.sun.xml.bind.api.AccessorException;
import com.sun.xml.bind.v2.model.runtime.RuntimeLeafInfo;
import com.sun.xml.bind.v2.runtime.unmarshaller.Loader;
import com.sun.xml.bind.v2.runtime.unmarshaller.TextLoader;
import com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext;
import com.sun.xml.bind.v2.runtime.unmarshaller.XsiTypeLoader;

import org.xml.sax.SAXException;

/**
 * {@link JaxBeanInfo} implementation for immutable leaf classes.
 *
 * 

* Leaf classes are always bound to a text and they are often immutable. * The JAXB spec allows this binding for a few special Java classes plus * type-safe enums. * *

* This implementation obtains necessary information from {@link RuntimeLeafInfo}. * * @author Kohsuke Kawaguchi */ final class LeafBeanInfoImpl extends JaxBeanInfo { private final Loader loader; private final Loader loaderWithSubst; private final Transducer xducer; /** * Non-null only if the leaf is also an element. */ private final Name tagName; public LeafBeanInfoImpl(JAXBContextImpl grammar, RuntimeLeafInfo li) { super(grammar,li,li.getClazz(),li.getTypeNames(),li.isElement(),true,false); xducer = li.getTransducer(); loader = new TextLoader(xducer); loaderWithSubst = new XsiTypeLoader(this); if(isElement()) tagName = grammar.nameBuilder.createElementName(li.getElementName()); else tagName = null; } public QName getTypeName(BeanT instance) { QName tn = xducer.getTypeName(instance); if(tn!=null) return tn; // rely on default return super.getTypeName(instance); } public final String getElementNamespaceURI(BeanT _) { return tagName.nsUri; } public final String getElementLocalName(BeanT _) { return tagName.localName; } public BeanT createInstance(UnmarshallingContext context) { throw new UnsupportedOperationException(); } public final boolean reset(BeanT bean, UnmarshallingContext context) { return false; } public final String getId(BeanT bean, XMLSerializer target) { return null; } public final void serializeBody(BeanT bean, XMLSerializer w) throws SAXException, IOException, XMLStreamException { // most of the times leaves are printed as leaf element/attribute property, // so this code is only used for example when you have multiple XmlElement on a property // and some of them are leaves. Hence this doesn't need to be super-fast. try { xducer.writeText(w,bean,null); } catch (AccessorException e) { w.reportError(null,e); } } public final void serializeAttributes(BeanT bean, XMLSerializer target) { // noop } public final void serializeRoot(BeanT bean, XMLSerializer target) throws SAXException, IOException, XMLStreamException { if(tagName==null) { target.reportError( new ValidationEventImpl( ValidationEvent.ERROR, Messages.UNABLE_TO_MARSHAL_NON_ELEMENT.format(bean.getClass().getName()), null, null)); } else { target.startElement(tagName,bean); target.childAsSoleContent(bean,null); target.endElement(); } } public final void serializeURIs(BeanT bean, XMLSerializer target) throws SAXException { // TODO: maybe we should create another LeafBeanInfoImpl class for // context-dependent xducers? if(xducer.useNamespace()) { try { xducer.declareNamespace(bean,target); } catch (AccessorException e) { target.reportError(null,e); } } } public final Loader getLoader(JAXBContextImpl context, boolean typeSubstitutionCapable) { if(typeSubstitutionCapable) return loaderWithSubst; else return loader; } public Transducer getTransducer() { return xducer; } }





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