Package com.couchbase.client.java.manager.bucket

Enum ConflictResolutionType

java.lang.Object

java.lang.Enum<ConflictResolutionType>

com.couchbase.client.java.manager.bucket.ConflictResolutionType

All Implemented Interfaces:

Serializable, Comparable<ConflictResolutionType>

@Volatile
public enum ConflictResolutionType
extends Enum<ConflictResolutionType>

The type of conflict resolution to configure for the bucket.

A conflict is caused when the source and target copies of an XDCR-replicated document are updated independently of and dissimilarly to one another, each by a local application. The conflict must be resolved, by determining which of the variants should prevail; and then correspondingly saving both documents in identical form. XDCR provides an automated conflict resolution process.

Enum Constant Summary

Enum Constants

Enum Constant	Description
CUSTOM	Custom bucket conflict resolution.
SEQUENCE_NUMBER	Conflict resolution based on the "Sequence Number".
TIMESTAMP	Conflict resolution based on a timestamp.

Method Summary

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

TIMESTAMP

public static final ConflictResolutionType TIMESTAMP

Conflict resolution based on a timestamp.

Timestamp-based conflict resolution (often referred to as Last Write Wins, or LWW) uses the document timestamp (stored in the CAS) to resolve conflicts. The timestamps associated with the most recent updates of source and target documents are compared. The document whose update has the more recent timestamp prevails.

SEQUENCE_NUMBER

public static final ConflictResolutionType SEQUENCE_NUMBER

Conflict resolution based on the "Sequence Number".

Conflicts can be resolved by referring to documents' sequence numbers. Sequence numbers are maintained per document, and are incremented on every document-update. The sequence numbers of source and target documents are compared; and the document with the higher sequence number prevails.

CUSTOM

@Volatile
public static final ConflictResolutionType CUSTOM

Custom bucket conflict resolution.

In Couchbase Server 7.1, this feature is only available in "developer-preview" mode. See the UI XDCR settings for the custom conflict resolution properties.

Method Detail

values

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

Returns:

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

valueOf

public static ConflictResolutionType 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

alias

public String alias()