package org.jboss.seam.example.restbay.resteasy.provider;
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.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.List;
/**
* @author Christian Bauer
*/
@Provider
@Produces("text/csv")
public class PlainTestProvider implements MessageBodyWriter
{
public boolean isWriteable(Class aClass, Type type, Annotation[] annotations, MediaType mediaType)
{
return List.class.isAssignableFrom(aClass);
}
public long getSize(Object o, Class aClass, Type type, Annotation[] annotations, MediaType mediaType)
{
return -1;
}
public void writeTo(Object o, Class aClass, Type type, Annotation[] annotations, MediaType mediaType,
MultivaluedMap httpHeaders, OutputStream outputStream) throws IOException, WebApplicationException
{
List<String[]> lines = (List<String[]>) o;
StringBuilder csv = new StringBuilder();
for (String[] line : lines)
{
for (String field : line)
{
csv.append(field).append(",");
}
csv.deleteCharAt(csv.length() - 1);
csv.append("\r\n");
}
outputStream.write(csv.toString().getBytes());
}
}