core/src/main/java/com/orientechnologies/common/util/OArrays.java
public static <T> boolean contains(final T[] iArray, final T iToFind) {
    if (iArray == null || iArray.length == 0)
      return false;

    for (T e : iArray)
      if (e != null && e.equals(iToFind))
        return true;

    return false;
  }
public static <T> boolean contains(final T[] iArray, final T iToFind) {
    if (iArray == null || iArray.length == 0)
      return false;

    for (T e : iArray)
      if (e != null && e.equals(iToFind))
        return true;

    return false;
  }
Returns true if an arrays contains a value, otherwise false