Enum ComparisonOperator

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

    public enum ComparisonOperator
    extends java.lang.Enum<ComparisonOperator>
    An enum listing the possible comparison operations. Some only apply to numbers, others to strings, dates, etc.
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean evaluate​(java.lang.Number a, java.lang.Number b)
      Compares two number according to the operator.
      boolean evaluate​(java.lang.String a, java.lang.String b)  
      static ComparisonOperator fromString​(java.lang.String value)
      Similar to valueOf, but also matches display name value (symbols, like "=")
      java.lang.String getDisplayValue()
      Returns the short display value of the enum's value eg.
      java.lang.String toString()  
      static ComparisonOperator valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static ComparisonOperator[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf
      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait
    • Method Detail

      • values

        public static ComparisonOperator[] 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 (ComparisonOperator c : ComparisonOperator.values())
            System.out.println(c);
        
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static ComparisonOperator 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
      • fromString

        public static ComparisonOperator fromString​(java.lang.String value)
        Similar to valueOf, but also matches display name value (symbols, like "=")
      • getDisplayValue

        public java.lang.String getDisplayValue()
        Returns the short display value of the enum's value eg. <, =, etc.
      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Enum<ComparisonOperator>
      • evaluate

        public boolean evaluate​(java.lang.Number a,
                                java.lang.Number b)
        Compares two number according to the operator. Note: The numbers will be converted to double for comparison, so if that is not appropriate, a different comparison mechanism should be used.
      • evaluate

        public boolean evaluate​(java.lang.String a,
                                java.lang.String b)