com.sleepycat.je.tree
Class NameLN

java.lang.Object
  com.sleepycat.je.tree.Node
      com.sleepycat.je.tree.LN
          com.sleepycat.je.tree.NameLN

All Implemented Interfaces:

Loggable

public final class NameLN
extends LN

A NameLN represents a Leaf Node in the name->database id mapping tree.

Constructor Summary

NameLN()
Create an empty NameLN, to be filled in from the log.

NameLN(DatabaseId id, EnvironmentImpl envImpl, boolean replicate)
In the ideal world, we'd have a base LN class so that this NameLN doesn't have a superfluous data field, but we want to optimize the LN class for size and speed right now.

Method Summary

java.lang.String	beginTag()
(package private) LNLogEntry	createLogEntry(LogEntryType entryType, DatabaseImpl dbImpl, byte[] key, byte[] delDupKey, long logAbortLsn, boolean logAbortKnownDeleted, Txn logTxn, ReplicationContext repContext)
protected void	dumpLogAdditional(java.lang.StringBuffer sb, boolean verbose) Dump additional fields.
java.lang.String	dumpString(int nSpaces, boolean dumpTags)
java.lang.String	endTag()
DatabaseId	getId()
int	getLogSize()
LogEntryType	getLogType()
protected LogEntryType	getTransactionalLogType() Log type for transactional entries.
boolean	isDeleted()
boolean	logicalEquals(Loggable other)
(package private) void	makeDeleted()
void	readFromLog(java.nio.ByteBuffer itemBuffer, byte entryVersion) Initialize this object from the data in itemBuf.
void	setId(DatabaseId id)
java.lang.String	toString() Default toString method at the root of the tree.
void	writeToLog(java.nio.ByteBuffer logBuffer) Serialize this object into the buffer.

Methods inherited from class com.sleepycat.je.tree.LN

accountForSubtreeRemoval, canBeAncestor, copyData, delete, dumpLog, getData, getLastLoggedSize, getMemorySizeIncludedByParent, isDirty, isEvictable, isEvictableInexact, isSoughtNode, isValidForDelete, log, log, modify, optionalLog, optionalLogProvisional, rebuildINList, releaseMemoryBudget, setDirty, setLastLoggedSize

Methods inherited from class com.sleepycat.je.tree.Node

containsDuplicates, dump, getLevel, getNodeId, getTransactionId, getType, latchShared, latchShared, matchLNByNodeId, postFetchInit, releaseLatch, setNodeId, shortDescription, verify

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sleepycat.je.log.Loggable

getTransactionId

Constructor Detail

NameLN

public NameLN(DatabaseId id,
              EnvironmentImpl envImpl,
              boolean replicate)

In the ideal world, we'd have a base LN class so that this NameLN doesn't have a superfluous data field, but we want to optimize the LN class for size and speed right now.

NameLN

public NameLN()

Create an empty NameLN, to be filled in from the log.

Method Detail

isDeleted

public boolean isDeleted()

Overrides:

isDeleted in class LN

makeDeleted

void makeDeleted()

Overrides:

makeDeleted in class LN

getId

public DatabaseId getId()

setId

public void setId(DatabaseId id)

toString

public java.lang.String toString()

Description copied from class: Node

Default toString method at the root of the tree.

Overrides:

toString in class Node

beginTag

public java.lang.String beginTag()

Overrides:

beginTag in class LN

endTag

public java.lang.String endTag()

Overrides:

endTag in class LN

dumpString

public java.lang.String dumpString(int nSpaces,
                                   boolean dumpTags)

Overrides:

dumpString in class LN

getTransactionalLogType

protected LogEntryType getTransactionalLogType()

Log type for transactional entries.

Overrides:

getTransactionalLogType in class LN

getLogType

public LogEntryType getLogType()

Overrides:

getLogType in class LN

See Also:

Node.getLogType()

getLogSize

public int getLogSize()

Specified by:

getLogSize in interface Loggable

Overrides:

getLogSize in class LN

Returns:

number of bytes used to store this object.

See Also:

LN.getLogSize()

writeToLog

public void writeToLog(java.nio.ByteBuffer logBuffer)

Description copied from interface: Loggable

Serialize this object into the buffer.

Specified by:

writeToLog in interface Loggable

Overrides:

writeToLog in class LN

Parameters:

logBuffer - is the destination buffer

See Also:

LN.writeToLog(java.nio.ByteBuffer)

readFromLog

public void readFromLog(java.nio.ByteBuffer itemBuffer,
                        byte entryVersion)
                 throws LogException

Description copied from interface: Loggable

Initialize this object from the data in itemBuf.

Specified by:

readFromLog in interface Loggable

Overrides:

readFromLog in class LN

Throws:

LogException

See Also:

LN.readFromLog(java.nio.ByteBuffer, byte)

logicalEquals

public boolean logicalEquals(Loggable other)

Specified by:

logicalEquals in interface Loggable

Overrides:

logicalEquals in class LN

Returns:

true if these two loggable items are logically the same. Used for replication testing.

See Also:

Loggable.logicalEquals(com.sleepycat.je.log.Loggable)

dumpLogAdditional

protected void dumpLogAdditional(java.lang.StringBuffer sb,
                                 boolean verbose)

Dump additional fields. Done this way so the additional info can be within the XML tags defining the dumped log entry.

Overrides:

dumpLogAdditional in class LN

createLogEntry

LNLogEntry createLogEntry(LogEntryType entryType,
                          DatabaseImpl dbImpl,
                          byte[] key,
                          byte[] delDupKey,
                          long logAbortLsn,
                          boolean logAbortKnownDeleted,
                          Txn logTxn,
                          ReplicationContext repContext)

Overrides:

createLogEntry in class LN