Package org.apache.calcite.linq4j

Enum CorrelateJoinType

java.lang.Object

java.lang.Enum<CorrelateJoinType>

org.apache.calcite.linq4j.CorrelateJoinType

All Implemented Interfaces:

Serializable, Comparable<CorrelateJoinType>

public enum CorrelateJoinType
extends Enum<CorrelateJoinType>

Specifies the type of correlation operation: inner, left, semi, or anti.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ANTI	Anti-join.
INNER	Inner join
LEFT	Left-outer join
SEMI	Semi-join.

Method Summary

Modifier and Type	Method	Description
static CorrelateJoinType	valueOf(String name)	Returns the enum constant of this type with the specified name.
static CorrelateJoinType[]	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

INNER

public static final CorrelateJoinType INNER

Inner join

LEFT

public static final CorrelateJoinType LEFT

Left-outer join

SEMI

public static final CorrelateJoinType SEMI

Semi-join.

Similar to from A ... where a in (select b from B ...)

ANTI

public static final CorrelateJoinType ANTI

Anti-join.

Similar to from A ... where a NOT in (select b from B ...)

Note: if B.b is nullable and B has nulls, no rows must be returned.

Method Detail

values

public static CorrelateJoinType[] 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 (CorrelateJoinType c : CorrelateJoinType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static CorrelateJoinType valueOf(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:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null