com.mongodb
Class WriteConcern

java.lang.Object
  com.mongodb.WriteConcern

public class WriteConcern
extends Object

WriteConcern control the write behavior for with various options, as well as exception raising on error conditions.

w -1 = don't even report network errors 0 = default, don't call getLastError by default 1 = basic, call getLastError, but don't wait for slaves 2+= wait for slaves wtimeout how long to wait for slaves before failing 0 = indefinite > 0 = ms to wait fsync force fsync to disk

MongoDB Doc Links

• databases

Field Summary

static WriteConcern	FSYNC_SAFE
static WriteConcern	NONE
static WriteConcern	NORMAL
static WriteConcern	REPLICAS_SAFE
static WriteConcern	SAFE
static WriteConcern	STRICT Deprecated.

Constructor Summary

WriteConcern()

WriteConcern(int w)

WriteConcern(int w, int wtimeout)

WriteConcern(int w, int wtimeout, boolean fsync)

Method Summary

boolean	callGetLastError()
boolean	fsync()
BasicDBObject	getCommand()
int	getW()
int	getWtimeout()
boolean	raiseNetworkErrors()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

NONE

public static final WriteConcern NONE

NORMAL

public static final WriteConcern NORMAL

SAFE

public static final WriteConcern SAFE

STRICT

@Deprecated
public static final WriteConcern STRICT

Deprecated.

FSYNC_SAFE

public static final WriteConcern FSYNC_SAFE

REPLICAS_SAFE

public static final WriteConcern REPLICAS_SAFE

Constructor Detail

WriteConcern

public WriteConcern()

WriteConcern

public WriteConcern(int w)

WriteConcern

public WriteConcern(int w,
                    int wtimeout)

WriteConcern

public WriteConcern(int w,
                    int wtimeout,
                    boolean fsync)

Method Detail

getCommand

public BasicDBObject getCommand()

getW

public int getW()

Returns:

the number of servers to write to

getWtimeout

public int getWtimeout()

Returns:

the write timeout (in milliseconds)

fsync

public boolean fsync()

Returns:

If files are sync'd to disk.

raiseNetworkErrors

public boolean raiseNetworkErrors()

callGetLastError

public boolean callGetLastError()

toString

public String toString()

Overrides:

toString in class Object