Enum Operator

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<Operator>

    public enum Operator
    extends java.lang.Enum<Operator>
    The enumeration of all operators.
    • Enum Constant Detail

      • EQUAL

        public static final Operator EQUAL
      • NOT_EQUAL

        public static final Operator NOT_EQUAL
      • GREATER_THAN

        public static final Operator GREATER_THAN
      • GREATER_OR_EQUAL

        public static final Operator GREATER_OR_EQUAL
      • LESS_THAN

        public static final Operator LESS_THAN
      • LESS_OR_EQUAL

        public static final Operator LESS_OR_EQUAL
      • LIKE

        public static final Operator LIKE
    • Method Detail

      • values

        public static Operator[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (Operator c : Operator.values())
            System.out.println(c);
        
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static Operator valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null
      • evaluate

        public abstract boolean evaluate​(PropertyValue p1,
                                         PropertyValue p2)
        "operand2 always evaluates to a scalar value" for multi-valued properties: if any of the value matches, then return true
      • toString

        public java.lang.String toString()
        Returns the name of this query operator.
        Overrides:
        toString in class java.lang.Enum<Operator>