package org.jboss.resteasy.plugins.providers.jaxb;
import org.jboss.resteasy.annotations.providers.jaxb.DoNotUseJAXBProvider;
import org.jboss.resteasy.annotations.providers.jaxb.WrappedMap;
import org.jboss.resteasy.util.FindAnnotation;
import org.jboss.resteasy.util.Types;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import javax.ws.rs.ext.Providers;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlSeeAlso;
import javax.xml.bind.annotation.XmlType;
import javax.xml.namespace.QName;
import javax.xml.transform.stream.StreamSource;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
@Provider
@Produces("*/*")
@Consumes("*/*")
public class MapProvider implements MessageBodyReader<Object>, MessageBodyWriter<Object>
{
@Context
protected Providers providers;
protected JAXBContextFinder getFinder(MediaType type)
{
ContextResolver<JAXBContextFinder> resolver = providers.getContextResolver(JAXBContextFinder.class, type);
if (resolver == null) return null;
return resolver.getContext(null);
}
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return isWrapped(type, genericType, annotations, mediaType);
}
protected boolean isWrapped(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
if (Map.class.isAssignableFrom(type) && genericType != null)
{
Class keyType = Types.getMapKeyType(genericType);
if (keyType == null) return false;
if (!keyType.equals(String.class)) return false;
Class valueType = Types.getMapValueType(genericType);
if (valueType == null) return false;
return (valueType.isAnnotationPresent(XmlRootElement.class) || valueType.isAnnotationPresent(XmlType.class) || valueType.isAnnotationPresent(XmlSeeAlso.class) || JAXBElement.class.equals(valueType)) && (FindAnnotation.findAnnotation(valueType, annotations, DoNotUseJAXBProvider.class) == null) && !IgnoredMediaTypes.ignored(valueType, annotations, mediaType);
}
return false;
}
public Object getJAXBObject(JAXBContextFinder finder, MediaType mediaType, Class<?> clazz, Element element) throws JAXBException
{
JAXBContext ctx = finder.findCachedContext(clazz, mediaType, null);
return ctx.createUnmarshaller().unmarshal(element);
}
public Object readFrom(Class<Object> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException
{
JAXBContextFinder finder = getFinder(mediaType);
if (finder == null)
{
throw new JAXBUnmarshalException("Unable to find JAXBContext for media type: " + mediaType);
}
Class valueType = Types.getMapValueType(genericType);
JaxbMap jaxbMap = null;
try
{
StreamSource source = new StreamSource(entityStream);
JAXBContext ctx = finder.findCacheContext(mediaType, annotations, JaxbMap.class, JaxbMap.Entry.class, valueType);
JAXBElement<JaxbMap> ele = ctx.createUnmarshaller().unmarshal(source, JaxbMap.class);
WrappedMap wrapped = FindAnnotation.findAnnotation(annotations, WrappedMap.class);
if (wrapped != null)
{
if (!wrapped.map().equals(ele.getName().getLocalPart()))
{
throw new JAXBUnmarshalException("Map wrapping failed, expected root element name of " + wrapped.map() + " got " + ele.getName().getLocalPart());
}
if (!wrapped.namespace().equals(ele.getName().getNamespaceURI()))
{
throw new JAXBUnmarshalException("Map wrapping failed, expect namespace of " + wrapped.namespace() + " got " + ele.getName().getNamespaceURI());
}
}
jaxbMap = ele.getValue();
HashMap map = new HashMap();
Unmarshaller unmarshaller = ctx.createUnmarshaller();
unmarshaller = AbstractJAXBProvider.decorateUnmarshaller(valueType, annotations, mediaType, unmarshaller);
for (int i = 0; i < jaxbMap.getValue().size(); i++)
{
Element element = (Element) jaxbMap.getValue().get(i);
NamedNodeMap attributeMap = element.getAttributes();
String keyValue = null;
if (wrapped != null)
{
keyValue = element.getAttribute(wrapped.key());
}
else
{
if (attributeMap.getLength() == 0)
throw new JAXBUnmarshalException("Map wrapped failed, could not find map entry key attribute");
for (int j = 0; j < attributeMap.getLength(); j++)
{
Attr key = (Attr) attributeMap.item(j);
if (!key.getName().startsWith("xmlns"))
{
keyValue = key.getValue();
break;
}
}
}
Object value = unmarshaller.unmarshal(element.getFirstChild());
map.put(keyValue, value);
}
return map;
}
catch (JAXBException e)
{
throw new JAXBUnmarshalException(e);
}
}
public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return isWrapped(type, genericType, annotations, mediaType);
}
public long getSize(Object entry, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return -1;
}
public void writeTo(Object target, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException
{
JAXBContextFinder finder = getFinder(mediaType);
if (finder == null)
{
throw new JAXBMarshalException("Unable to find JAXBContext for media type: " + mediaType);
}
Class valueType = Types.getMapValueType(genericType);
try
{
JAXBContext ctx = finder.findCacheContext(mediaType, annotations, JaxbMap.class, JaxbMap.Entry.class, valueType);
String mapName = "map";
String entryName = "entry";
String keyName = "key";
String namespaceURI = "";
String prefix = "";
WrappedMap wrapped = FindAnnotation.findAnnotation(annotations, WrappedMap.class);
if (wrapped != null)
{
mapName = wrapped.map();
entryName = wrapped.entry();
namespaceURI = wrapped.namespace();
prefix = wrapped.prefix();
keyName = wrapped.key();
}
JaxbMap map = new JaxbMap(entryName, keyName, namespaceURI);
Map<Object, Object> targetMap = (Map) target;
for (Map.Entry mapEntry : targetMap.entrySet())
{
map.addEntry(mapEntry.getKey().toString(), mapEntry.getValue());
}
JAXBElement<JaxbMap> jaxbMap = new JAXBElement<JaxbMap>(new QName(namespaceURI, mapName, prefix), JaxbMap.class, map);
Marshaller marshaller = ctx.createMarshaller();
marshaller = AbstractJAXBProvider.decorateMarshaller(valueType, annotations, mediaType, marshaller);
marshaller.marshal(jaxbMap, entityStream);
}
catch (JAXBException e)
{
throw new JAXBMarshalException(e);
}
}
}