org.apache.drill.exec.physical.impl.join

Enum RowKeyJoin.RowKeyJoinState

java.lang.Object

java.lang.Enum<RowKeyJoin.RowKeyJoinState>

org.apache.drill.exec.physical.impl.join.RowKeyJoin.RowKeyJoinState

All Implemented Interfaces:

Serializable, Comparable<RowKeyJoin.RowKeyJoinState>

Enclosing interface:

RowKeyJoin

public static enum RowKeyJoin.RowKeyJoinState
extends Enum<RowKeyJoin.RowKeyJoinState>

Enum for RowKeyJoin internal state. Possible states are {INITIAL, PROCESSING, DONE} Initially RowKeyJoin will be at INITIAL state. Then the state will be transitioned by the RestrictedJsonRecordReader to PROCESSING as soon as it processes the rows related to RowKeys. Then RowKeyJoin algorithm sets to INITIAL state when leftStream has no data. Basically RowKeyJoin calls leftStream multiple times depending upon the rightStream, hence this transition from PROCESSING to INITIAL. If there is no data from rightStream or OutOfMemory condition then the state is transitioned to DONE.

Enum Constant Summary

Enum Constants

Enum Constant and Description
DONE
INITIAL
PROCESSING

Method Summary

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

INITIAL

public static final RowKeyJoin.RowKeyJoinState INITIAL

PROCESSING

public static final RowKeyJoin.RowKeyJoinState PROCESSING

DONE

public static final RowKeyJoin.RowKeyJoinState DONE

Method Detail

values

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

Returns:

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

valueOf

public static RowKeyJoin.RowKeyJoinState 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