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, VersionedWriteLoggable

public final class NameLN
extends LN

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

Field Summary

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

NULL_NODE_ID

Constructor Summary

Constructors

Constructor and Description
NameLN() Create an empty NameLN, to be filled in from the log.
NameLN(DatabaseId id) 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

Modifier and Type	Method and Description
String	beginTag()
protected void	dumpLogAdditional(StringBuilder sb, boolean verbose) Dump additional fields.
String	dumpString(int nSpaces, boolean dumpTags)
String	endTag()
Collection<VersionedWriteLoggable>	getEmbeddedLoggables()
DatabaseId	getId()
int	getLogSize(int logVersion, boolean forReplication) Returns the number of bytes needed to store this object in the format for the specified log version.
protected LogEntryType	getLogType(boolean isInsert, boolean isTransactional, DatabaseImpl db) Return the correct log entry type for a NameLN depends on whether it's transactional.
boolean	isDeleted()
boolean	logicalEquals(Loggable other)
void	readFromLog(ByteBuffer itemBuffer, int entryVersion) Initialize this object from the data in itemBuf.
void	setId(DatabaseId id)
String	toString() Default toString method at the root of the tree.
void	writeToLog(ByteBuffer logBuffer, int logVersion, boolean forReplication) Serializes this object into the specified buffer in the format for the specified log version.

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

addExtraMarshaledMemorySize, clearDirty, copyEntryData, delete, dumpKey, dumpLog, getData, getFetchedCold, getGenericLogType, getLastFormatChange, getLogSize, getMemorySizeIncludedByParent, getVLSNSequence, hasReplicationFormat, isDirty, isLN, isReplicationFormatWorthwhile, log, makeLN, makeLN, modify, optionalLog, postFetchInit, resolvePartialEntry, setDirty, setEmpty, setEntry, setEntry, setEntry, setFetchedCold, setVLSNSequence, writeToLog

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

containsDuplicates, dump, getLevel, getTransactionId, getType, isBIN, isBINDelta, isBINDelta, isDBIN, isDIN, isIN, isUpperIN, latch, latchShared, latchShared, releaseLatch

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)

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

getId

public DatabaseId getId()

setId

public void setId(DatabaseId id)

toString

public String toString()

Description copied from class: Node

Default toString method at the root of the tree.

Overrides:

toString in class Node

beginTag

public String beginTag()

Overrides:

beginTag in class LN

endTag

public String endTag()

Overrides:

endTag in class LN

dumpString

public String dumpString(int nSpaces,
                         boolean dumpTags)

Overrides:

dumpString in class LN

getLogType

protected LogEntryType getLogType(boolean isInsert,
                                  boolean isTransactional,
                                  DatabaseImpl db)

Return the correct log entry type for a NameLN depends on whether it's transactional.

Overrides:

getLogType in class LN

getEmbeddedLoggables

public Collection<VersionedWriteLoggable> getEmbeddedLoggables()

Specified by:

getEmbeddedLoggables in interface VersionedWriteLoggable

Overrides:

getEmbeddedLoggables in class LN

See Also:

ReplicableLogEntry.getEmbeddedLoggables()

getLogSize

public int getLogSize(int logVersion,
                      boolean forReplication)

Description copied from interface: VersionedWriteLoggable

Returns the number of bytes needed to store this object in the format for the specified log version. Earlier log versions only need to be supported for log entries with format changes made in LogEntryType.LOG_VERSION_REPLICATE_OLDER or greater.

Specified by:

getLogSize in interface VersionedWriteLoggable

Overrides:

getLogSize in class LN

Parameters:

logVersion - the log version

forReplication - whether the entry will be sent over the wire, and not written to the log.

Returns:

the number of bytes to store this object for the log version

writeToLog

public void writeToLog(ByteBuffer logBuffer,
                       int logVersion,
                       boolean forReplication)

Description copied from interface: VersionedWriteLoggable

Serializes this object into the specified buffer in the format for the specified log version. Earlier log versions only need to be supported for log entries with format changes made in LogEntryType.LOG_VERSION_REPLICATE_OLDER or greater.

Specified by:

writeToLog in interface VersionedWriteLoggable

Overrides:

writeToLog in class LN

Parameters:

logBuffer - the destination buffer

logVersion - the log version

forReplication - whether the entry will be sent over the wire, and not written to the log.

readFromLog

public void readFromLog(ByteBuffer itemBuffer,
                        int entryVersion)

Description copied from interface: Loggable

Initialize this object from the data in itemBuf.

Specified by:

readFromLog in interface Loggable

Overrides:

readFromLog in class LN

Parameters:

itemBuffer - the source buffer

entryVersion - the log version of the data

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.

dumpLogAdditional

protected void dumpLogAdditional(StringBuilder 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