java.lang.Object
- java.lang.Enum<ServerFeature>
- - com.couchbase.client.core.io.netty.kv.ServerFeature

All Implemented Interfaces:

Serializable, Comparable<ServerFeature>
```
@Internal
public enum ServerFeature
extends Enum<ServerFeature>
```
The ServerFeature enum describes all the different negotiation modes between the server and the SDK.

Since:

2.0.0

Enum Constant Summary

Enum Constants
Enum Constant	Description
`ALT_REQUEST`	Allows the server to accept requests with flexible extras.
`CLUSTERMAP_CHANGE_NOTIFICATION`	Request the server to push any cluster maps stored by ns_server into one of the buckets the client have access to.
`COLLECTIONS`	Enables the collections feature.
`CREATE_AS_DELETED`	Enables the "create as deleted" flag, allowing a document to be created in a tombstoned state.
`DATATYPE`	Deprecated. this feature is considered retired.
`DUPLEX`	Enables Duplex mode support.
`JSON`	Enables JSON data identification support.
`MUTATION_SEQNO`	Returns the sequence number on every mutation.
`PRESERVE_TTL`	Enables preserving expiry when updating document.
`SELECT_BUCKET`	Enable select_bucket support.
`SNAPPY`	Enable snappy-based compression support.
`SYNC_REPLICATION`	Specify durability requirements for mutations.
`TCPDELAY`	Disable TCP Nodelay.
`TCPNODELAY`	Enables TCP Nodelay.
`TLS`	The TLS feature.
`TRACING`	Enable tracing support.
`UNORDERED_EXECUTION`	Tell the server that we're ok with the server reordering the execution of commands.
`VATTR`	Enables the vattr feature.
`XATTR`	Enable xattr support.
`XERROR`	Enable extended error map support.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`short`	`value()`	Returns the actual byte value for the wire protocol.
`static ServerFeature`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static ServerFeature[]`	`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
  - DATATYPE
```
@SinceCouchbase("4.0")
@Deprecated
public static final ServerFeature DATATYPE
```
    Deprecated.
    this feature is considered retired.
    
    The custom datatype feature.
  - TLS
```
public static final ServerFeature TLS
```
    The TLS feature.
  - TCPNODELAY
```
@SinceCouchbase("4.0")
public static final ServerFeature TCPNODELAY
```
    Enables TCP Nodelay.
  - MUTATION_SEQNO
```
@SinceCouchbase("4.0")
public static final ServerFeature MUTATION_SEQNO
```
    Returns the sequence number on every mutation.
  - TCPDELAY
```
@SinceCouchbase("4.0")
public static final ServerFeature TCPDELAY
```
    Disable TCP Nodelay.
  - XATTR
```
@SinceCouchbase("5.0")
public static final ServerFeature XATTR
```
    Enable xattr support.
  - XERROR
```
@SinceCouchbase("5.0")
public static final ServerFeature XERROR
```
    Enable extended error map support.
  - SELECT_BUCKET
```
@SinceCouchbase("5.0")
public static final ServerFeature SELECT_BUCKET
```
    Enable select_bucket support.
  - SNAPPY
```
@SinceCouchbase("5.5")
public static final ServerFeature SNAPPY
```
    Enable snappy-based compression support.
  - JSON
```
@SinceCouchbase("5.5")
public static final ServerFeature JSON
```
    Enables JSON data identification support.
  - DUPLEX
```
@SinceCouchbase("5.5")
public static final ServerFeature DUPLEX
```
    Enables Duplex mode support.
  - CLUSTERMAP_CHANGE_NOTIFICATION
```
@SinceCouchbase("5.5")
public static final ServerFeature CLUSTERMAP_CHANGE_NOTIFICATION
```
    Request the server to push any cluster maps stored by ns_server into one of the buckets the client have access to.
  - UNORDERED_EXECUTION
```
@SinceCouchbase("5.5")
public static final ServerFeature UNORDERED_EXECUTION
```
    Tell the server that we're ok with the server reordering the execution of commands.
  - TRACING
```
@SinceCouchbase("5.5")
public static final ServerFeature TRACING
```
    Enable tracing support.
  - ALT_REQUEST
```
@SinceCouchbase("6.5")
public static final ServerFeature ALT_REQUEST
```
    Allows the server to accept requests with flexible extras.
  - SYNC_REPLICATION
```
@SinceCouchbase("6.5")
public static final ServerFeature SYNC_REPLICATION
```
    Specify durability requirements for mutations.
  - COLLECTIONS
```
@SinceCouchbase("6.5")
public static final ServerFeature COLLECTIONS
```
    Enables the collections feature.
    History note: There was a "collections" feature in Couchbase in 5.0, but it had a different code (0x09) that has since been retired.
  - PRESERVE_TTL
```
@SinceCouchbase("7.0")
public static final ServerFeature PRESERVE_TTL
```
    Enables preserving expiry when updating document.
  - VATTR
```
@SinceCouchbase("6.5.1")
public static final ServerFeature VATTR
```
    Enables the vattr feature. Note that vattrs (such as $document) were available before this, but this flag signifies that if a vattr is requested that the server does not recognise, it will be rejected with the correct XATTR_UNKNOWN_VATTR error, rather than the connection being disconnected.
  - CREATE_AS_DELETED
```
@SinceCouchbase("6.6")
public static final ServerFeature CREATE_AS_DELETED
```
    Enables the "create as deleted" flag, allowing a document to be created in a tombstoned state.
- Method Detail
  - values
```
public static ServerFeature[] 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 (ServerFeature c : ServerFeature.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static ServerFeature 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
  - value
```
public short value()
```
    Returns the actual byte value for the wire protocol.
    
    Returns:
    
    the actual wire value.

Enum ServerFeature

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

DATATYPE

TLS

TCPNODELAY

MUTATION_SEQNO

TCPDELAY

XATTR

XERROR

SELECT_BUCKET

SNAPPY

JSON

DUPLEX

CLUSTERMAP_CHANGE_NOTIFICATION

UNORDERED_EXECUTION

TRACING

ALT_REQUEST

SYNC_REPLICATION

COLLECTIONS

PRESERVE_TTL

VATTR

CREATE_AS_DELETED

Method Detail

values

valueOf

value