Package org.apache.calcite.sql

Enum JoinConditionType

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<JoinConditionType>
    public enum JoinConditionType
extends java.lang.Enum<JoinConditionType>
    Enumerates the types of condition in a join expression.

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      NONE
      Join clause has no condition, for example "FROM EMP, DEPT"
      ON
      Join clause has an ON condition, for example "FROM EMP JOIN DEPT ON EMP.DEPTNO = DEPT.DEPTNO"
      USING
      Join clause has a USING condition, for example "FROM EMP JOIN DEPT USING (DEPTNO)"

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private JoinConditionType()  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      SqlLiteral symbol​(SqlParserPos pos)
      Creates a parse-tree node representing an occurrence of this join type at a particular position in the parsed text.
      static JoinConditionType valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static JoinConditionType[] 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

    • Enum Constant Detail

      • NONE

        public static final JoinConditionType NONE
        Join clause has no condition, for example "FROM EMP, DEPT"

      • ON

        public static final JoinConditionType ON
        Join clause has an ON condition, for example "FROM EMP JOIN DEPT ON EMP.DEPTNO = DEPT.DEPTNO"

      • USING

        public static final JoinConditionType USING
        Join clause has a USING condition, for example "FROM EMP JOIN DEPT USING (DEPTNO)"

    • Constructor Detail

      • JoinConditionType

        private JoinConditionType()

    • Method Detail

      • values

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

      • valueOf

        public static JoinConditionType 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

      • symbol

        public SqlLiteral symbol​(SqlParserPos pos)
        Creates a parse-tree node representing an occurrence of this join type at a particular position in the parsed text.