Enum Class JoinType

java.lang.Object
java.lang.Enum<JoinType>
org.huiche.ast.statement.clause.JoinType
All Implemented Interfaces:
Serializable, Comparable<JoinType>, Constable, Segment
public enum JoinType extends Enum<JoinType> implements Segment
join类型
Author:
Maning

  • Enum Constant Details

    • JOIN

      public static final JoinType JOIN
      内连接

    • LEFT_JOIN

      public static final JoinType LEFT_JOIN
      左外连接

    • RIGHT_JOIN

      public static final JoinType RIGHT_JOIN
      右外连接

    • FULL_JOIN

      public static final JoinType FULL_JOIN
      全连接

    • CROSS_JOIN

      public static final JoinType CROSS_JOIN
      交叉连接|笛卡尔积

    • NATURAL_JOIN

      public static final JoinType NATURAL_JOIN
      自然连接(使用同名字段)

  • Method Details

    • values

      public static JoinType[] values()
      Returns an array containing the constants of this enum class, in the order they are declared.
      Returns:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static JoinType valueOf(String name)
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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:
      IllegalArgumentException - if this enum class has no constant with the specified name
      NullPointerException - if the argument is null

    • pseudoSql

      public String pseudoSql()
      Description copied from interface: Segment
      伪SQL,用于直接toString时显示
      Specified by:
      pseudoSql in interface Segment
      Returns:
      伪SQL

    • staticable

      public boolean staticable()
      Description copied from interface: Segment
      是否静态化的,即不必转译
      Specified by:
      staticable in interface Segment
      Returns:
      是否静态化