package org.jboss.resteasy.plugins.providers.multipart;
import java.beans.Introspector;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.AccessibleObject;
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.concurrent.CompletionStage;
import javax.ws.rs.FormParam;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.Provider;
import org.jboss.resteasy.annotations.providers.multipart.MultipartForm;
import org.jboss.resteasy.annotations.providers.multipart.PartFilename;
import org.jboss.resteasy.annotations.providers.multipart.PartType;
import org.jboss.resteasy.plugins.providers.ProviderHelper;
import org.jboss.resteasy.spi.AsyncMessageBodyWriter;
import org.jboss.resteasy.spi.AsyncOutputStream;
import org.jboss.resteasy.spi.WriterException;
import org.jboss.resteasy.spi.util.FindAnnotation;
@Provider
@Produces("multipart/form-data")
public class MultipartFormAnnotationWriter extends AbstractMultipartFormDataWriter implements AsyncMessageBodyWriter<Object>
{
public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return FindAnnotation.findAnnotation(annotations, MultipartForm.class) != null || type.isAnnotationPresent(MultipartForm.class);
}
public long getSize(Object o, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return -1;
}
public void writeTo(Object obj, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException
{
write(getMultipart(obj, type), mediaType, httpHeaders, entityStream);
}
private MultipartFormDataOutput getMultipart(Object obj, Class<?> type) throws IOException {
MultipartFormDataOutput multipart = new MultipartFormDataOutput();
Class<?> theType = type;
while (theType != null && !theType.equals(Object.class))
{
getFields(theType, multipart, obj);
theType = theType.getSuperclass();
}
for (Method method : type.getMethods())
{
if ((method.isAnnotationPresent(FormParam.class)
|| method.isAnnotationPresent(org.jboss.resteasy.annotations.jaxrs.FormParam.class))
&& method.getName().startsWith("get") && method.getParameterTypes().length == 0
&& method.isAnnotationPresent(PartType.class))
{
FormParam param = method.getAnnotation(FormParam.class);
String name;
if(param != null) {
name = param.value();
} else {
org.jboss.resteasy.annotations.jaxrs.FormParam param2 = method.getAnnotation(org.jboss.resteasy.annotations.jaxrs.FormParam.class);
name = param2.value();
if(name == null || name.isEmpty())
name = Introspector.decapitalize(method.getName().substring(3));
}
Object value = null;
try
{
value = method.invoke(obj);
}
catch (IllegalAccessException e)
{
throw new WriterException(e);
}
catch (InvocationTargetException e)
{
throw new WriterException(e.getCause());
}
PartType partType = method.getAnnotation(PartType.class);
String filename = getFilename(method);
multipart.addFormData(name, value, method.getReturnType(), method.getGenericReturnType(), MediaType.valueOf(partType.value()), filename);
}
}
return multipart;
}
@Override
public CompletionStage<Void> asyncWriteTo(Object obj, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders, AsyncOutputStream entityStream) {
try {
return asyncWrite(getMultipart(obj, type), mediaType, httpHeaders, entityStream);
} catch (IOException e) {
return ProviderHelper.completedException(e);
}
}
protected String getFilename(AccessibleObject method)
{
PartFilename fname = method.getAnnotation(PartFilename.class);
return fname == null ? null : fname.value();
}
protected void getFields(Class<?> type, MultipartFormDataOutput output, Object obj)
throws IOException
{
for (Field field : type.getDeclaredFields())
{
if ((field.isAnnotationPresent(FormParam.class)
|| field.isAnnotationPresent(org.jboss.resteasy.annotations.jaxrs.FormParam.class))
&& field.isAnnotationPresent(PartType.class))
{
AccessController.doPrivileged(new FieldEnablerPrivilegedAction(field));
FormParam param = field.getAnnotation(FormParam.class);
String name;
if(param != null) {
name = param.value();
} else {
org.jboss.resteasy.annotations.jaxrs.FormParam param2 = field.getAnnotation(org.jboss.resteasy.annotations.jaxrs.FormParam.class);
name = param2.value();
if(name == null || name.isEmpty())
name = field.getName();
}
Object value = null;
try
{
value = field.get(obj);
}
catch (IllegalAccessException e)
{
throw new WriterException(e);
}
PartType partType = field.getAnnotation(PartType.class);
String filename = getFilename(field);
output.addFormData(name, value, field.getType(), field.getGenericType(), MediaType.valueOf(partType.value()), filename);
}
}
}
}