org.apache.kudu.client

Enum AsyncKuduScanner.RowDataFormat

java.lang.Object

java.lang.Enum<AsyncKuduScanner.RowDataFormat>

org.apache.kudu.client.AsyncKuduScanner.RowDataFormat

All Implemented Interfaces:

Serializable, Comparable<AsyncKuduScanner.RowDataFormat>

Enclosing class:

AsyncKuduScanner

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public static enum AsyncKuduScanner.RowDataFormat
extends Enum<AsyncKuduScanner.RowDataFormat>

Expected row data format in scanner result set. The server may or may not support the expected layout, and the actual layout is internal hidden by RowResult and RowResultIterator interfaces so it's transparent to application code.

Enum Constant Summary

Enum Constants

Enum Constant and Description
COLUMNAR Server is expected to return scanner result data in columnar layout.
ROWWISE Server is expected to return scanner result data in row-wise layout.

Method Summary

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

ROWWISE

public static final AsyncKuduScanner.RowDataFormat ROWWISE

Server is expected to return scanner result data in row-wise layout. This is currently the default layout.

COLUMNAR

public static final AsyncKuduScanner.RowDataFormat COLUMNAR

Server is expected to return scanner result data in columnar layout. This layout is more efficient in processing and bandwidth for both server and client side. It requires server support (kudu-1.12.0 and later), if it's not supported server still returns data in row-wise layout.

Method Detail

values

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

Returns:

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

valueOf

public static AsyncKuduScanner.RowDataFormat 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