package org.jboss.resteasy.plugins.providers.multipart;
import org.jboss.resteasy.specimpl.MultivaluedMapImpl;
import org.jboss.resteasy.util.HttpHeaderNames;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Providers;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Type;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
public class AbstractMultipartWriter
{
@Context
protected Providers workers;
protected void write(MultipartOutput multipartOutput, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
throws IOException
{
String boundary = mediaType.getParameters().get("boundary");
if (boundary == null)
boundary = multipartOutput.getBoundary();
httpHeaders.putSingle(HttpHeaderNames.CONTENT_TYPE, mediaType.toString() + "; boundary=" + multipartOutput.getBoundary());
byte[] boundaryBytes = ("--" + boundary).getBytes();
writeParts(multipartOutput, entityStream, boundaryBytes);
entityStream.write(boundaryBytes);
entityStream.write("--".getBytes());
}
protected void writeParts(MultipartOutput multipartOutput, OutputStream entityStream, byte[] boundaryBytes)
throws IOException
{
for (OutputPart part : multipartOutput.getParts())
{
MultivaluedMap<String, Object> headers = new MultivaluedMapImpl<String, Object>();
writePart(entityStream, boundaryBytes, part, headers);
}
}
protected void writePart(OutputStream entityStream, byte[] boundaryBytes, OutputPart part, MultivaluedMap<String, Object> headers)
throws IOException
{
entityStream.write(boundaryBytes);
entityStream.write("\r\n".getBytes());
headers.putAll(part.getHeaders());
headers.putSingle(HttpHeaderNames.CONTENT_TYPE, part.getMediaType());
Object entity = part.getEntity();
Class<?> entityType = part.getType();
Type entityGenericType = part.getGenericType();
MessageBodyWriter writer = workers.getMessageBodyWriter(entityType, entityGenericType, null, part.getMediaType());
long size = writer.getSize(entity, entityType, entityGenericType, null, part.getMediaType());
if (size > -1) headers.putSingle(HttpHeaderNames.CONTENT_LENGTH, Integer.toString((int) size));
writer.writeTo(entity, entityType, entityGenericType, null, part.getMediaType(), headers, new HeaderFlushedOutputStream(headers, entityStream));
entityStream.write("\r\n".getBytes());
}
}