app/src/main/java/org/apache/fineract/data/remote/NullOnEmptyConverterFactory.java

package org.apache.fineract.data.remote;

import java.io.IOException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import okhttp3.ResponseBody;
import retrofit2.Converter;
import retrofit2.Retrofit;

public class NullOnEmptyConverterFactory extends Converter.Factory {

    @Override
    public Converter<ResponseBody, ?> responseBodyConverter(Type type, Annotation[] annotations,
            Retrofit retrofit) {
        final Converter<ResponseBody, ?> delegate = retrofit.nextResponseBodyConverter(this, type,
                annotations);
        return new Converter<ResponseBody, Object>() {
            @Override
            public Object convert(ResponseBody body) throws IOException {
                if (body.contentLength() == 0) return null;
                return delegate.convert(body);
            }
        };
    }
}