Module com.couchbase.columnar.client.java

Package com.couchbase.columnar.client.java

Enum Class ScanConsistency

java.lang.Object

java.lang.Enum<ScanConsistency>

com.couchbase.columnar.client.java.ScanConsistency

All Implemented Interfaces:

Serializable, Comparable<ScanConsistency>, Constable

public enum ScanConsistency
extends Enum<ScanConsistency>

The possible values for scan consistency in an columnar query.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
NOT_BOUNDED	The index will return whatever state it has to the columnar query engine at the time of query.
REQUEST_PLUS	The index will wait until all mutations have been processed at the time of request before being processed in the columnar query engine.

Method Summary

Modifier and Type	Method	Description
static ScanConsistency	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ScanConsistency[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

NOT_BOUNDED

public static final ScanConsistency NOT_BOUNDED

The index will return whatever state it has to the columnar query engine at the time of query.

This is the default (for single-statement requests). No timestamp vector is used in the index scan. This is also the fastest mode, because we avoid the cost of obtaining the vector, and we also avoid any wait for the index to catch up to the vector.

REQUEST_PLUS

public static final ScanConsistency REQUEST_PLUS

The index will wait until all mutations have been processed at the time of request before being processed in the columnar query engine.

This implements strong consistency per request. Before processing the request, a current vector is obtained. The vector is used as a lower bound for the statements in the request.

Method Details

values

public static ScanConsistency[] 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 ScanConsistency 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