com.pervasive.datarush.operators.join

Enum SemiJoinMode

java.lang.Object

java.lang.Enum<SemiJoinMode>

com.pervasive.datarush.operators.join.SemiJoinMode

All Implemented Interfaces:

Serializable, Comparable<SemiJoinMode>

public enum SemiJoinMode
extends Enum<SemiJoinMode>

Specifies how the SemiJoin operator should behave.

Enum Constant Summary

Enum Constants

Enum Constant and Description
LEFT_ANTI Output those rows from the left for which there does not exist a matching row on the right.
LEFT_SEMI Output those rows from the left for which there exists a matching row on the right.

Method Summary

Methods

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

LEFT_SEMI

public static final SemiJoinMode LEFT_SEMI

Output those rows from the left for which there exists a matching row on the right. Output contains only keys/data from the left side.

LEFT_ANTI

public static final SemiJoinMode LEFT_ANTI

Output those rows from the left for which there does not exist a matching row on the right. Output contains only keys/data from the left side.

Method Detail

values

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

Returns:

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

valueOf

public static SemiJoinMode 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