com.sleepycat.je
Class CursorConfig

java.lang.Object
  com.sleepycat.je.CursorConfig

All Implemented Interfaces:

Cloneable

public class CursorConfig
extends Object
implements Cloneable

Specifies the attributes of database cursor. An instance created with the default constructor is initialized with the system's default settings.

Field Summary

static CursorConfig	DEFAULT Default configuration used if null is passed to methods that create a cursor.
static CursorConfig	READ_COMMITTED A convenience instance to configure a cursor for read committed isolation.
static CursorConfig	READ_UNCOMMITTED A convenience instance to configure read operations performed by the cursor to return modified but not yet committed data.

Constructor Summary

CursorConfig()
An instance created using the default constructor is initialized with the system's default settings.

Method Summary

CursorConfig	clone() Returns a copy of this configuration object.
boolean	getReadCommitted() Returns true if read operations performed by the cursor are configured to obey read committed isolation.
boolean	getReadUncommitted() Returns true if read operations performed by the cursor are configured to return modified but not yet committed data.
CursorConfig	setReadCommitted(boolean readCommitted) Configures read operations performed by the cursor to obey read committed isolation.
CursorConfig	setReadUncommitted(boolean readUncommitted) Configures read operations performed by the cursor to return modified but not yet committed data.
String	toString() Returns the values for each configuration attribute.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final CursorConfig DEFAULT

Default configuration used if null is passed to methods that create a cursor.

READ_UNCOMMITTED

public static final CursorConfig READ_UNCOMMITTED

A convenience instance to configure read operations performed by the cursor to return modified but not yet committed data.

READ_COMMITTED

public static final CursorConfig READ_COMMITTED

A convenience instance to configure a cursor for read committed isolation. This ensures the stability of the current data item read by the cursor but permits data read by this cursor to be modified or deleted prior to the commit of the transaction.

Constructor Detail

CursorConfig

public CursorConfig()

An instance created using the default constructor is initialized with the system's default settings.

Method Detail

setReadUncommitted

public CursorConfig setReadUncommitted(boolean readUncommitted)

Configures read operations performed by the cursor to return modified but not yet committed data.

Parameters:

readUncommitted - If true, configure read operations performed by the cursor to return modified but not yet committed data.

Returns:

this

See Also:

LockMode.READ_UNCOMMITTED

getReadUncommitted

public boolean getReadUncommitted()

Returns true if read operations performed by the cursor are configured to return modified but not yet committed data.

Returns:

true if read operations performed by the cursor are configured to return modified but not yet committed data.

See Also:

LockMode.READ_UNCOMMITTED

setReadCommitted

public CursorConfig setReadCommitted(boolean readCommitted)

Configures read operations performed by the cursor to obey read committed isolation. Read committed isolation provides for cursor stability but not repeatable reads. Data items which have been previously read by this transaction may be deleted or modified by other transactions before the cursor is closed or the transaction completes.

Parameters:

readCommitted - If true, configure read operations performed by the cursor to obey read committed isolation.

Returns:

this

See Also:

LockMode.READ_COMMITTED

getReadCommitted

public boolean getReadCommitted()

Returns true if read operations performed by the cursor are configured to obey read committed isolation.

Returns:

true if read operations performed by the cursor are configured to obey read committed isolation.

See Also:

LockMode.READ_COMMITTED

clone

public CursorConfig clone()

Returns a copy of this configuration object.

Overrides:

clone in class Object

toString

public String toString()

Returns the values for each configuration attribute.

Overrides:

toString in class Object

Returns:

the values for each configuration attribute.