package org.jboss.resteasy.plugins.providers.multipart;
import org.jboss.resteasy.annotations.providers.multipart.MultipartForm;
import org.jboss.resteasy.spi.ReaderException;
import org.jboss.resteasy.util.FindAnnotation;
import javax.ws.rs.Consumes;
import javax.ws.rs.FormParam;
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.MessageBodyReader;
import javax.ws.rs.ext.Provider;
import javax.ws.rs.ext.Providers;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.security.AccessController;
import java.util.List;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
@Provider
@Consumes("multipart/form-data")
public class MultipartFormAnnotationReader implements MessageBodyReader<Object>
{
protected
@Context
Providers workers;
public boolean isReadable(Class<?> type, Type genericType,
Annotation[] annotations, MediaType mediaType)
{
return FindAnnotation.findAnnotation(annotations, MultipartForm.class) != null
|| type.isAnnotationPresent(MultipartForm.class);
}
public Object readFrom(Class<Object> type, Type genericType,
Annotation[] annotations, MediaType mediaType,
MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
throws IOException, WebApplicationException
{
String boundary = mediaType.getParameters().get("boundary");
if (boundary == null)
throw new IOException("Unable to get boundary for multipart");
MultipartFormDataInputImpl input = new MultipartFormDataInputImpl(
mediaType, workers);
input.parse(entityStream);
Object obj;
try
{
obj = type.newInstance();
}
catch (InstantiationException e)
{
throw new ReaderException(e.getCause());
}
catch (IllegalAccessException e)
{
throw new ReaderException(e);
}
Class<?> theType = type;
while (theType != null && !theType.equals(Object.class))
{
setFields(theType, input, obj);
theType = theType.getSuperclass();
}
for (Method method : type.getMethods())
{
if (method.isAnnotationPresent(FormParam.class)
&& method.getName().startsWith("set")
&& method.getParameterTypes().length == 1)
{
FormParam param = method.getAnnotation(FormParam.class);
List<InputPart> list = input.getFormDataMap()
.get(param.value());
if (list == null || list.isEmpty())
continue;
InputPart part = list.get(0);
// if (part == null) throw new
// LoggableFailure("Unable to find @FormParam in multipart: " +
// param.value());
if (part == null)
continue;
Object data = part.getBody(method.getParameterTypes()[0],
method.getGenericParameterTypes()[0]);
try
{
method.invoke(obj, data);
}
catch (IllegalAccessException e)
{
throw new ReaderException(e);
}
catch (InvocationTargetException e)
{
throw new ReaderException(e.getCause());
}
}
}
return obj;
}
protected void setFields(Class<?> type, MultipartFormDataInputImpl input,
Object obj) throws IOException
{
for (Field field : type.getDeclaredFields())
{
if (field.isAnnotationPresent(FormParam.class))
{
AccessController.doPrivileged(new FieldEnablerPrivilegedAction(field));
FormParam param = field.getAnnotation(FormParam.class);
List<InputPart> list = input.getFormDataMap()
.get(param.value());
if (list == null || list.isEmpty())
continue;
InputPart part = list.get(0);
// if (part == null) throw new
// LoggableFailure("Unable to find @FormParam in multipart: " +
// param.value());
if (part == null)
continue;
Object data = part.getBody(field.getType(), field
.getGenericType());
try
{
field.set(obj, data);
}
catch (IllegalAccessException e)
{
throw new ReaderException(e);
}
}
}
}
}