package org.jboss.resteasy.test.resource.basic.resource;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
@Provider
@Produces(MediaType.APPLICATION_XML + "; charset=UTF-8")
public class MediaTypeFromMessageBodyWriterListAsXML implements MessageBodyWriter<Iterable<?>> {
@Override
public long getSize(final Iterable<?> t, final Class<?> type, final Type genericType, final Annotation[] annotations,
final MediaType mediaType) {
return -1L;
}
@Override
public boolean isWriteable(final Class<?> type, final Type genericType, final Annotation[] annotations,
final MediaType mediaType) {
return Iterable.class.isAssignableFrom(type);
}
@Override
public void writeTo(final Iterable<?> items, final Class<?> type, final Type genericType,
final Annotation[] annotations, final MediaType mediaType, final MultivaluedMap<String, Object> httpHeaders,
final OutputStream out) throws IOException {
if (items instanceof Collection) {
httpHeaders.putSingle("X-COUNT", Integer.toString(((Collection<?>) items).size()));
}
}
}