HttpCallback.java

package com.dg.libs.rest.callbacks;

import com.dg.libs.rest.domain.ResponseStatus;

/**
 * The {@link HttpCallback} interface is used for HTTP request notification. It
 * contains methods that describe the error if the callback fails and return
 * response data if the callback succeeds.
 * 
 * @param <T>
 *          Parameter that indicates which object the callback returns. It can
 *          be of any type.
 */
public interface HttpCallback<T> {

  /**
   * This method shows that the callback successfully finished. It contains
   * response data which represents the return type of the callback.
   * 
   * @param responseData
   *          It can be of any type.
   */
  void onSuccess(T responseData, ResponseStatus responseStatus);

  /**
   * This method shows that the callback has failed due to server issue, no
   * connectivity or parser error
   * 
   * @param responseStatus
   */
  void onHttpError(ResponseStatus responseStatus);

}