Package com.im.df.api.ddl

Enum DFListOperationType

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<DFListOperationType>
    public enum DFListOperationType
extends java.lang.Enum<DFListOperationType>
    Enum for list operations - set operations, inversion and sorting.
    Since:
    15.11.16.0

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean isBinaryOperation()
      Tests for binary operation, which accepts only 2 operands.
      boolean isNaryOperation()
      Tests for n-ary operation, which accepts 2 or more operands.
      boolean isUnaryOperation()
      Tests for unary operation, which accepts only 1 operand.
      boolean isValid​(int operands)
      Tests if operation is valid for given number of operands.
      static java.util.List<DFListOperationType> validOperations​(int operands)
      Returns all operations defined for given number of operands.
      static DFListOperationType valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static DFListOperationType[] 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, toString, valueOf

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Method Detail

      • values

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

      • valueOf

        public static DFListOperationType 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

      • isUnaryOperation

        public boolean isUnaryOperation()
        Tests for unary operation, which accepts only 1 operand.
        Returns:
        true if unary operation, otherwise false.

      • isBinaryOperation

        public boolean isBinaryOperation()
        Tests for binary operation, which accepts only 2 operands.
        Returns:
        true if binary operation, otherwise false.

      • isNaryOperation

        public boolean isNaryOperation()
        Tests for n-ary operation, which accepts 2 or more operands.
        Returns:
        true if n-ary operation, otherwise false.

      • isValid

        public boolean isValid​(int operands)
        Tests if operation is valid for given number of operands.
        Parameters:
        operands - number of operands
        Returns:
        true if operation is defined for given number of operands, otherwise false

      • validOperations

        public static java.util.List<DFListOperationType> validOperations​(int operands)
        Returns all operations defined for given number of operands.
        Parameters:
        operands - number of operands
        Returns:
        list of all operations defined for given number of operands