Assert.java

package me.prettyprint.cassandra.utils;

/**
 * A generic low weight assert utility, very similar with Spring's Assert class,
 * just without the dependency on Spring
 *
 * See for example
 * http://www.jarvana.com/jarvana/view/org/springframework/spring
 * /1.2.9/spring-1.2.9-javadoc.jar!/org/springframework/util/Assert.html
 *
 * @author Ran Tavory
 *
 */
public final class Assert {

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

  public static void noneNull(Object... object) {
    for (int i = 0; i < object.length; ++i) {
      if (object[i] == null) {
        throw new NullPointerException("Null not allowed, number " + (i + 1));
      }
    }
  }

  public static void isTrue(boolean b, String message) {
    if (!b) {
      throw new IllegalArgumentException(message);
    }
  }
}