Validate.java

/*
    Copyright (C) 2013 Prasanna Thirumalai
    
    This file is part of StackX.

    StackX is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    StackX is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with StackX.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.prasanna.android.stacknetwork.utils;

public class Validate {
  private static final String DEFAULT_FAIL_MESSAGE = "Validation failed";

  private static String getMessage(String message) {
    if (message != null)
      return message;

    return DEFAULT_FAIL_MESSAGE;
  }

  public static void notNull(Object object, String message) {
    if (object == null) {
      throw new IllegalArgumentException(getMessage(message));
    }
  }

  public static void notNull(Object... objects) {
    if (objects == null) {
      throw new IllegalArgumentException(getMessage(DEFAULT_FAIL_MESSAGE));
    }

    for (int i = 0; i < objects.length; i++) {
      notNull(objects[i], "Arg " + i + " is null");
    }
  }

  public static boolean isEmptyString(String string) {
    return string == null || string.equals("");
  }

}