org.hsqldb

Class RowAVL

java.lang.Object

org.hsqldb.Row

org.hsqldb.RowAVL

All Implemented Interfaces:

CachedObject

Direct Known Subclasses:

RowAVLDisk, RowAVLDiskData

public class RowAVL
extends Row

Base class for a database row object implementing rows for memory resident tables.

Subclass RowAVLDisk implements rows for CACHED and TEXT tables.

New class derived from Hypersonic SQL code and enhanced in HSQLDB.

Since:

Hypersonic SQL

Field Summary

Fields

Modifier and Type	Field and Description
NodeAVL	nPrimaryNode

Fields inherited from class org.hsqldb.Row

rowAction

Fields inherited from interface org.hsqldb.persist.CachedObject

emptyArray

Constructor Summary

Constructors

Constructor and Description
RowAVL(TableBase table, java.lang.Object[] data, int position, PersistentStore store) Constructor for MEMORY table Row.

Method Summary

Modifier and Type	Method and Description
void	clearNonPrimaryNodes()
void	delete(PersistentStore store)
void	destroy() Helps GC, removing secondary node links.
NodeAVL	getNode(int index) Returns the Node for a given Index, using the ordinal position of the Index within the Table Object.
NodeAVL	insertNode(int index)
void	restore()
void	setNewNodes(PersistentStore store)

Methods inherited from class org.hsqldb.Row

equals, getAccessCount, getAction, getData, getDefaultCapacity, getId, getPos, getRealSize, getStorageSize, getTable, hasChanged, hashCode, isBlock, isInMemory, isKeepInMemory, isMemory, isNew, keepInMemory, read, setChanged, setInMemory, setPos, setStorageSize, updateAccessCount, write, write

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

nPrimaryNode

public NodeAVL nPrimaryNode

Constructor Detail

RowAVL

public RowAVL(TableBase table,
              java.lang.Object[] data,
              int position,
              PersistentStore store)

Constructor for MEMORY table Row. The result is a Row with Nodes that are not yet linked with other Nodes in the AVL indexes.

Method Detail

setNewNodes

public void setNewNodes(PersistentStore store)

getNode

public NodeAVL getNode(int index)

Returns the Node for a given Index, using the ordinal position of the Index within the Table Object.

insertNode

public NodeAVL insertNode(int index)

clearNonPrimaryNodes

public void clearNonPrimaryNodes()

delete

public void delete(PersistentStore store)

Overrides:

delete in class Row

restore

public void restore()

Specified by:

restore in interface CachedObject

Overrides:

restore in class Row

destroy

public void destroy()

Helps GC, removing secondary node links. Keeps primary index links to allow iteration.

Specified by:

destroy in interface CachedObject

Overrides:

destroy in class Row