package redis.clients.jedis;

import redis.clients.jedis.exceptions.JedisDataException;

public class Response<T> {
    protected T response = null;
    private boolean built = false;
    private boolean set = false;
    private Builder<T> builder;
    private Object data;

    public Response(Builder<T> b) {
	this.builder = b;
    }

    public void set(Object data) {
	this.data = data;
	set = true;
    }

    public T get() {
	if (!set) {
	    throw new JedisDataException(
		    "Please close pipeline or multi block before calling this method.");
	}
	if (!built) {
	    if (data != null) {
		if (data instanceof JedisDataException) {
		    throw new JedisDataException((JedisDataException) data);
		}
		response = builder.build(data);
	    }
	    this.data = null;
	    built = true;
	}
	return response;
    }

    public String toString() {
	return "Response " + builder.toString();
    }

}