Quadcap Embeddable Database

com.quadcap.sql.index.BtreeCursor Class Reference

Inheritance diagram for com.quadcap.sql.index.BtreeCursor:

List of all members.

---

Detailed Description

A cursor for a Quadcap Btree.

Author:

Stan Bailes

Definition at line 63 of file BtreeCursor.java.

Public Member Functions
void	release ()
	Release this cursor back to the pool.
PooledObject	create ()
	PooledObject factory.
void	init (Btree tree, boolean skipSetup) throws IOException
	Init for use/reuse.
void	unsetup ()
	Called (in theory) by the owning Btree when the index is modified.
final boolean	seek (byte[] key) throws IOException
	Seek: Position the cursor on or before the specified key value.
boolean	seek (byte[] key, int len) throws IOException
	Seek, but the key can be a subsequence of the given byte array.
void	beforeFirst () throws IOException
	Move the cursor before the first key.
void	afterLast () throws IOException
	Move the cursor after the last key.
boolean	absolute (int x) throws IOException
	Move the cursor to the specified absolute position.
boolean	next () throws IOException
	Move the cursor to the next row and return true if the cursor is positioned on a valid row.
boolean	prev () throws IOException
	Move the cursor to the next row and return true if the cursor is positioned on a valid row.
boolean	delete () throws IOException
	Delete the current row (if the cursor is positioned on a valid row, that is ;-).
boolean	insert (byte[] key, int klen, byte[] data, int doff, int dlen) throws IOException
	Insert a new key/data pair.
boolean	insert (byte[] key, byte[] data) throws IOException
boolean	replace (byte[] data, int doff, int dlen) throws IOException
	Replace the data portion of the current item with the specified data.
boolean	replace (byte[] data) throws IOException
long	size () throws IOException
	Return the total number of entries in this index.
long	position () throws IOException
	Return the current position in the index.
void	close ()
	Close the index.
int	getKey (byte[] buf)
byte[]	getKeyBuf ()
void	setKeyBuf (byte[] buf)
int	getKeyLen ()
byte[]	getKey ()
int	getVal (byte[] buf)
byte[]	getValBuf ()
void	setValBuf (byte[] buf)
int	getValLen ()
byte[]	getVal ()
long	getValAsLong ()
String	toString ()
Static Public Member Functions
void	main (String[] args)
	Main for testing.
Protected Member Functions
void	setup (boolean restoreKey) throws IOException
	Called to re-establish the synchronization of this cursor in the case where the underlying index has been modified.
Package Functions
final String	id ()
final String	dr ()
boolean	seek1 (int level, byte[] key, int len) throws IOException
	(Private) seek recursion kernel
final void	setBlock (int i, Block b)
	Manage updates to the 'blocks' array through this function to assuage refcount madness.
final boolean	getNextBlock () throws IOException
final boolean	getPrevBlock () throws IOException
final void	holdKey (int off)
String	k (byte[] b, int off, int len)
String	t ()
Static Package Functions
BtreeCursor	get (Btree tree, boolean skipSetup) throws IOException
long	subtreeSize (Bnode root, Block b) throws IOException
final String	r (boolean b)
void	itest (BCursor bc) throws IOException
String	doLine (BCursor bc, String line) throws Exception
void	show (String s)
final long	tick ()
final void	mkey (int i, byte[] b)
void	ktest (BCursor c) throws IOException
void	kshow (BCursor c) throws IOException
void	ktest (Btree t) throws IOException
void	jtest (BCursor c) throws Exception
Package Attributes
Object	fileLock
Btree	tree
Bnode	root = null
Comparator	compare = null
Block[]	blocks = new Block[16]
int[]	pointers = new int[16]
byte[]	curKey = new byte[4096]
byte[]	curVal = new byte[4096]
int[]	lengths = new int[2]
int	depth = -1
long	size = -1
long	position = posUNKNOWN
Static Package Attributes
final long	posUNKNOWN = -2
final long	posAFTER_LAST = -1
final long	posBEFORE_FIRST = 0
final boolean	noPool = false
ObjectPool	pool = new ObjectPool(new BtreeCursor())
int	lastCount = -1
StringBuffer	lastBuf = new StringBuffer()
Private Member Functions
	BtreeCursor ()
	Constructor for cursor on a given Btree.
Static Private Member Functions
final int	countNext (BCursor c) throws IOException
final int	countPrev (BCursor c) throws IOException

---

Constructor & Destructor Documentation

com.quadcap.sql.index.BtreeCursor.BtreeCursor (   )  [private]

Constructor for cursor on a given Btree. Definition at line 98 of file BtreeCursor.java. Referenced by com.quadcap.sql.index.BtreeCursor.create(), and com.quadcap.sql.index.BtreeCursor.get().

---

Member Function Documentation

boolean com.quadcap.sql.index.BtreeCursor.absolute (  int  x  )  throws IOException

Move the cursor to the specified absolute position. Implements com.quadcap.sql.index.BCursor. Definition at line 316 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.absolute(), com.quadcap.sql.index.BtreeCursor.afterLast(), com.quadcap.sql.index.BtreeCursor.beforeFirst(), com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.BtreeCursor.getNextBlock(), com.quadcap.sql.index.BtreeCursor.getPrevBlock(), com.quadcap.sql.index.BtreeCursor.holdKey(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.position, com.quadcap.sql.index.BtreeCursor.size, and com.quadcap.sql.index.BtreeCursor.toString(). Referenced by com.quadcap.sql.index.BtreeCursor.absolute().

void com.quadcap.sql.index.BtreeCursor.afterLast (   )  throws IOException

Move the cursor after the last key. Implements com.quadcap.sql.index.BCursor. Definition at line 290 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.posAFTER_LAST, com.quadcap.sql.index.BtreeCursor.position, com.quadcap.sql.index.BtreeCursor.root, and com.quadcap.sql.index.BtreeCursor.toString(). Referenced by com.quadcap.sql.index.BtreeCursor.absolute().

void com.quadcap.sql.index.BtreeCursor.beforeFirst (   )  throws IOException

Move the cursor before the first key. Implements com.quadcap.sql.index.BCursor. Definition at line 260 of file BtreeCursor.java. References com.quadcap.sql.index.Btree.compare, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.Btree.getRoot(), com.quadcap.sql.index.BtreeCursor.lengths, com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.posBEFORE_FIRST, com.quadcap.sql.index.BtreeCursor.position, com.quadcap.sql.index.BtreeCursor.root, com.quadcap.sql.index.BtreeCursor.toString(), and com.quadcap.sql.index.BtreeCursor.tree. Referenced by com.quadcap.sql.index.BtreeCursor.absolute(), com.quadcap.sql.index.BtreeCursor.init(), and com.quadcap.sql.index.BtreeCursor.setup().

void com.quadcap.sql.index.BtreeCursor.close (   )

Close the index. Implements com.quadcap.sql.index.BCursor. Definition at line 597 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.unsetup().

final int com.quadcap.sql.index.BtreeCursor.countNext (  BCursor  c  )  throws IOException [static, private]

Definition at line 746 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.countNext(), and com.quadcap.sql.index.BtreeCursor.lastCount. Referenced by com.quadcap.sql.index.BtreeCursor.countNext().

final int com.quadcap.sql.index.BtreeCursor.countPrev (  BCursor  c  )  throws IOException [static, private]

Definition at line 753 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.countPrev(), com.quadcap.sql.index.BtreeCursor.lastBuf, and com.quadcap.sql.index.BtreeCursor.lastCount. Referenced by com.quadcap.sql.index.BtreeCursor.countPrev().

PooledObject com.quadcap.sql.index.BtreeCursor.create (   )

PooledObject factory. Definition at line 134 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.BtreeCursor().

boolean com.quadcap.sql.index.BtreeCursor.delete (   )  throws IOException

Delete the current row (if the cursor is positioned on a valid row, that is ;-). Implements com.quadcap.sql.index.BCursor. Definition at line 448 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.Bnode.deleteKeyAtPos(), com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.Btree.notifyUpdate(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.root, com.quadcap.sql.index.BtreeCursor.toString(), and com.quadcap.sql.index.BtreeCursor.tree.

String com.quadcap.sql.index.BtreeCursor.doLine (  BCursor  bc, String  line )  throws Exception [static, package]

Definition at line 792 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.doLine(), and com.quadcap.sql.index.BtreeCursor.show(). Referenced by com.quadcap.sql.index.BtreeCursor.doLine(), and com.quadcap.sql.index.BtreeCursor.itest().

final String com.quadcap.sql.index.BtreeCursor.dr (   )  [package]

Definition at line 217 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.getVal(), and com.quadcap.sql.index.BtreeCursor.lengths. Referenced by com.quadcap.sql.index.BtreeCursor.next().

BtreeCursor com.quadcap.sql.index.BtreeCursor.get (  Btree  tree, boolean  skipSetup )  throws IOException [static, package]

Definition at line 103 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.BtreeCursor(), com.quadcap.sql.index.BtreeCursor.get(), com.quadcap.sql.index.BtreeCursor.init(), com.quadcap.sql.index.Btree.lock, com.quadcap.sql.index.BtreeCursor.noPool, com.quadcap.sql.index.BtreeCursor.pool, and com.quadcap.sql.index.BtreeCursor.tree. Referenced by com.quadcap.sql.index.BtreeCursor.get().

byte [] com.quadcap.sql.index.BtreeCursor.getKey (   )

Implements com.quadcap.sql.index.BCursor. Definition at line 612 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curKey, and com.quadcap.sql.index.BtreeCursor.lengths.

int com.quadcap.sql.index.BtreeCursor.getKey (  byte[]  buf  )

Implements com.quadcap.sql.index.BCursor. Definition at line 601 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curKey, and com.quadcap.sql.index.BtreeCursor.lengths.

byte [] com.quadcap.sql.index.BtreeCursor.getKeyBuf (   )

Implements com.quadcap.sql.index.BCursor. Definition at line 606 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curKey. Referenced by com.quadcap.sql.index.BtreeCursor.next().

int com.quadcap.sql.index.BtreeCursor.getKeyLen (   )

Implements com.quadcap.sql.index.BCursor. Definition at line 610 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.lengths. Referenced by com.quadcap.sql.index.BtreeCursor.next().

final boolean com.quadcap.sql.index.BtreeCursor.getNextBlock (   )  throws IOException [package]

Definition at line 641 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.BtreeCursor.pointers, and com.quadcap.sql.index.BtreeCursor.root. Referenced by com.quadcap.sql.index.BtreeCursor.absolute(), and com.quadcap.sql.index.BtreeCursor.next().

final boolean com.quadcap.sql.index.BtreeCursor.getPrevBlock (   )  throws IOException [package]

Definition at line 663 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.BtreeCursor.pointers, and com.quadcap.sql.index.BtreeCursor.root. Referenced by com.quadcap.sql.index.BtreeCursor.absolute(), and com.quadcap.sql.index.BtreeCursor.prev().

byte [] com.quadcap.sql.index.BtreeCursor.getVal (   )

Implements com.quadcap.sql.index.BCursor. Definition at line 629 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curVal, and com.quadcap.sql.index.BtreeCursor.lengths. Referenced by com.quadcap.sql.index.BtreeCursor.dr().

int com.quadcap.sql.index.BtreeCursor.getVal (  byte[]  buf  )

Implements com.quadcap.sql.index.BCursor. Definition at line 618 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curVal, and com.quadcap.sql.index.BtreeCursor.lengths.

long com.quadcap.sql.index.BtreeCursor.getValAsLong (   )

Implements com.quadcap.sql.index.BCursor. Definition at line 635 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curVal.

byte [] com.quadcap.sql.index.BtreeCursor.getValBuf (   )

Implements com.quadcap.sql.index.BCursor. Definition at line 623 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curVal.

int com.quadcap.sql.index.BtreeCursor.getValLen (   )

Implements com.quadcap.sql.index.BCursor. Definition at line 627 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.lengths.

final void com.quadcap.sql.index.BtreeCursor.holdKey (  int  off  )  [package]

Definition at line 688 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.curKey, com.quadcap.sql.index.BtreeCursor.curVal, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.holdKey(), com.quadcap.sql.index.BtreeCursor.lengths, and com.quadcap.sql.index.BtreeCursor.pointers. Referenced by com.quadcap.sql.index.BtreeCursor.absolute(), com.quadcap.sql.index.BtreeCursor.holdKey(), com.quadcap.sql.index.BtreeCursor.next(), com.quadcap.sql.index.BtreeCursor.prev(), and com.quadcap.sql.index.BtreeCursor.seek().

final String com.quadcap.sql.index.BtreeCursor.id (   )  [package]

Definition at line 213 of file BtreeCursor.java. References com.quadcap.sql.index.Btree.getFile(), com.quadcap.sql.file.BlockFile.getName(), com.quadcap.sql.index.Btree.getRootBlock(), and com.quadcap.sql.index.BtreeCursor.tree.

void com.quadcap.sql.index.BtreeCursor.init (  Btree  tree, boolean  skipSetup )  throws IOException

Init for use/reuse. Definition at line 141 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.beforeFirst(), com.quadcap.sql.index.BtreeCursor.init(), com.quadcap.sql.index.Btree.lock, and com.quadcap.sql.index.BtreeCursor.tree. Referenced by com.quadcap.sql.index.BtreeCursor.get(), and com.quadcap.sql.index.BtreeCursor.init().

boolean com.quadcap.sql.index.BtreeCursor.insert (  byte[]  key, byte[]  data )  throws IOException

Implements com.quadcap.sql.index.BCursor. Definition at line 510 of file BtreeCursor.java.

boolean com.quadcap.sql.index.BtreeCursor.insert (  byte[]  key, int  klen, byte[]  data, int  doff, int  dlen )  throws IOException

Insert a new key/data pair. We are presumably positioned just before the spot where the new record should go, but we should check, anyway. This will return false if the key already exists in the index. Implements com.quadcap.sql.index.BCursor. Definition at line 476 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.compare, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.BtreeCursor.insert(), com.quadcap.sql.index.BtreeCursor.k(), com.quadcap.sql.index.Btree.notifyUpdate(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.r(), com.quadcap.sql.index.BtreeCursor.root, com.quadcap.sql.index.Bnode.setKey(), com.quadcap.sql.index.BtreeCursor.toString(), and com.quadcap.sql.index.BtreeCursor.tree. Referenced by com.quadcap.sql.index.BtreeCursor.insert().

void com.quadcap.sql.index.BtreeCursor.itest (  BCursor  bc  )  throws IOException [static, package]

Definition at line 773 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.doLine(), com.quadcap.sql.index.BtreeCursor.itest(), and com.quadcap.sql.index.BtreeCursor.t(). Referenced by com.quadcap.sql.index.BtreeCursor.itest().

void com.quadcap.sql.index.BtreeCursor.jtest (  BCursor  c  )  throws Exception [static, package]

Definition at line 945 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.jtest(), com.quadcap.sql.index.BtreeCursor.lastBuf, and com.quadcap.sql.index.BtreeCursor.lastCount. Referenced by com.quadcap.sql.index.BtreeCursor.jtest().

String com.quadcap.sql.index.BtreeCursor.k (  byte[]  b, int  off, int  len )  [package]

Definition at line 728 of file BtreeCursor.java. References com.quadcap.sql.index.Btree.compare, com.quadcap.sql.index.BtreeCursor.k(), com.quadcap.sql.index.Comparator.toString(), and com.quadcap.sql.index.BtreeCursor.tree. Referenced by com.quadcap.sql.index.BtreeCursor.insert(), com.quadcap.sql.index.BtreeCursor.k(), and com.quadcap.sql.index.BtreeCursor.replace().

void com.quadcap.sql.index.BtreeCursor.kshow (  BCursor  c  )  throws IOException [static, package]

Definition at line 887 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.kshow(), and com.quadcap.sql.index.BtreeCursor.tick(). Referenced by com.quadcap.sql.index.BtreeCursor.kshow(), and com.quadcap.sql.index.BtreeCursor.ktest().

void com.quadcap.sql.index.BtreeCursor.ktest (  Btree  t  )  throws IOException [static, package]

Definition at line 904 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.tick().

void com.quadcap.sql.index.BtreeCursor.ktest (  BCursor  c  )  throws IOException [static, package]

Definition at line 870 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.kshow(), com.quadcap.sql.index.BtreeCursor.ktest(), and com.quadcap.sql.index.BtreeCursor.tick(). Referenced by com.quadcap.sql.index.BtreeCursor.ktest().

void com.quadcap.sql.index.BtreeCursor.main (  String[]  args  )  [static]

Main for testing. Definition at line 921 of file BtreeCursor.java. References com.quadcap.sql.index.Btree.getCursor(), com.quadcap.sql.index.BtreeCursor.main(), and com.quadcap.sql.file.BlockFile.newPage(). Referenced by com.quadcap.sql.index.BtreeCursor.main().

final void com.quadcap.sql.index.BtreeCursor.mkey (  int  i, byte[]  b )  [static, package]

Definition at line 861 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.mkey(). Referenced by com.quadcap.sql.index.BtreeCursor.mkey().

boolean com.quadcap.sql.index.BtreeCursor.next (   )  throws IOException

Move the cursor to the next row and return true if the cursor is positioned on a valid row. Implements com.quadcap.sql.index.BCursor. Definition at line 369 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.dr(), com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.BtreeCursor.getKeyBuf(), com.quadcap.sql.index.BtreeCursor.getKeyLen(), com.quadcap.sql.index.BtreeCursor.getNextBlock(), com.quadcap.sql.index.BtreeCursor.holdKey(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.position, and com.quadcap.sql.index.BtreeCursor.toString().

long com.quadcap.sql.index.BtreeCursor.position (   )  throws IOException

Return the current position in the index. Implements com.quadcap.sql.index.BCursor. Definition at line 562 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.r(), com.quadcap.sql.index.BtreeCursor.root, com.quadcap.sql.index.BtreeCursor.size(), and com.quadcap.sql.index.BtreeCursor.subtreeSize().

boolean com.quadcap.sql.index.BtreeCursor.prev (   )  throws IOException

Move the cursor to the next row and return true if the cursor is positioned on a valid row. Implements com.quadcap.sql.index.BCursor. Definition at line 413 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.BtreeCursor.getPrevBlock(), com.quadcap.sql.index.BtreeCursor.holdKey(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.posAFTER_LAST, com.quadcap.sql.index.BtreeCursor.position, com.quadcap.sql.index.BtreeCursor.posUNKNOWN, com.quadcap.sql.index.BtreeCursor.size, and com.quadcap.sql.index.BtreeCursor.toString().

final String com.quadcap.sql.index.BtreeCursor.r (  boolean  b  )  [static, package]

Definition at line 770 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.r(). Referenced by com.quadcap.sql.index.BtreeCursor.insert(), com.quadcap.sql.index.BtreeCursor.position(), and com.quadcap.sql.index.BtreeCursor.r().

void com.quadcap.sql.index.BtreeCursor.release (   )

Release this cursor back to the pool. Implements com.quadcap.sql.index.BCursor. Definition at line 118 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.BtreeCursor.noPool, com.quadcap.sql.index.BtreeCursor.pool, com.quadcap.sql.index.Btree.releaseCursor(), com.quadcap.sql.index.BtreeCursor.tree, and com.quadcap.sql.index.BtreeCursor.unsetup(). Referenced by com.quadcap.sql.index.Btree.free().

boolean com.quadcap.sql.index.BtreeCursor.replace (  byte[]  data  )  throws IOException

Implements com.quadcap.sql.index.BCursor. Definition at line 542 of file BtreeCursor.java.

boolean com.quadcap.sql.index.BtreeCursor.replace (  byte[]  data, int  doff, int  dlen )  throws IOException

Replace the data portion of the current item with the specified data. Implements com.quadcap.sql.index.BCursor. Definition at line 517 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.curKey, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.BtreeCursor.k(), com.quadcap.sql.index.BtreeCursor.lengths, com.quadcap.sql.index.Btree.notifyUpdate(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.replace(), com.quadcap.sql.index.BtreeCursor.root, com.quadcap.sql.index.Bnode.setKey(), com.quadcap.sql.index.BtreeCursor.toString(), and com.quadcap.sql.index.BtreeCursor.tree. Referenced by com.quadcap.sql.index.BtreeCursor.replace().

boolean com.quadcap.sql.index.BtreeCursor.seek (  byte[]  key, int  len )  throws IOException

Seek, but the key can be a subsequence of the given byte array. Implements com.quadcap.sql.index.BCursor. Definition at line 193 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.BtreeCursor.holdKey(), com.quadcap.sql.index.BtreeCursor.position, com.quadcap.sql.index.BtreeCursor.posUNKNOWN, com.quadcap.sql.index.BtreeCursor.root, com.quadcap.sql.index.BtreeCursor.seek1(), com.quadcap.sql.index.BtreeCursor.setBlock(), and com.quadcap.sql.index.BtreeCursor.toString().

final boolean com.quadcap.sql.index.BtreeCursor.seek (  byte[]  key  )  throws IOException

Seek: Position the cursor on or before the specified key value. Return true if the key matches exactly. Implements com.quadcap.sql.index.BCursor. Definition at line 186 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.seek(). Referenced by com.quadcap.sql.index.BtreeCursor.seek(), and com.quadcap.sql.index.BtreeCursor.setup().

boolean com.quadcap.sql.index.BtreeCursor.seek1 (  int  level, byte[]  key, int  len )  throws IOException [package]

(Private) seek recursion kernel Definition at line 227 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.compare, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.BtreeCursor.pointers, com.quadcap.sql.index.BtreeCursor.root, com.quadcap.sql.index.BtreeCursor.seek1(), and com.quadcap.sql.index.BtreeCursor.setBlock(). Referenced by com.quadcap.sql.index.BtreeCursor.seek(), and com.quadcap.sql.index.BtreeCursor.seek1().

final void com.quadcap.sql.index.BtreeCursor.setBlock (  int  i, Block  b )  [package]

Manage updates to the 'blocks' array through this function to assuage refcount madness. Definition at line 252 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, and com.quadcap.sql.index.BtreeCursor.setBlock(). Referenced by com.quadcap.sql.index.BtreeCursor.seek(), com.quadcap.sql.index.BtreeCursor.seek1(), com.quadcap.sql.index.BtreeCursor.setBlock(), and com.quadcap.sql.index.BtreeCursor.unsetup().

void com.quadcap.sql.index.BtreeCursor.setKeyBuf (  byte[]  buf  )

Implements com.quadcap.sql.index.BCursor. Definition at line 608 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curKey, and com.quadcap.sql.index.BtreeCursor.setKeyBuf(). Referenced by com.quadcap.sql.index.BtreeCursor.setKeyBuf().

void com.quadcap.sql.index.BtreeCursor.setup (  boolean  restoreKey  )  throws IOException [protected]

Called to re-establish the synchronization of this cursor in the case where the underlying index has been modified. Definition at line 153 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.beforeFirst(), com.quadcap.sql.index.Btree.compare, com.quadcap.sql.index.BtreeCursor.curKey, com.quadcap.sql.index.BtreeCursor.depth, com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.Btree.getRoot(), com.quadcap.sql.index.BtreeCursor.lengths, com.quadcap.sql.index.BtreeCursor.seek(), com.quadcap.sql.index.BtreeCursor.setup(), and com.quadcap.sql.index.BtreeCursor.tree. Referenced by com.quadcap.sql.index.BtreeCursor.setup().

void com.quadcap.sql.index.BtreeCursor.setValBuf (  byte[]  buf  )

Implements com.quadcap.sql.index.BCursor. Definition at line 625 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.curVal, and com.quadcap.sql.index.BtreeCursor.setValBuf(). Referenced by com.quadcap.sql.index.BtreeCursor.setValBuf().

void com.quadcap.sql.index.BtreeCursor.show (  String  s  )  [static, package]

Definition at line 855 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.show(). Referenced by com.quadcap.sql.index.BtreeCursor.doLine(), and com.quadcap.sql.index.BtreeCursor.show().

long com.quadcap.sql.index.BtreeCursor.size (   )  throws IOException

Return the total number of entries in this index. Implements com.quadcap.sql.index.BCursor. Definition at line 549 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.fileLock, com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.BtreeCursor.root, and com.quadcap.sql.index.BtreeCursor.subtreeSize(). Referenced by com.quadcap.sql.index.BtreeCursor.position().

long com.quadcap.sql.index.BtreeCursor.subtreeSize (  Bnode  root, Block  b )  throws IOException [static, package]

Definition at line 705 of file BtreeCursor.java. References com.quadcap.sql.index.Bnode.getBlock(), com.quadcap.sql.index.BtreeCursor.root, and com.quadcap.sql.index.BtreeCursor.subtreeSize(). Referenced by com.quadcap.sql.index.BtreeCursor.position(), com.quadcap.sql.index.BtreeCursor.size(), and com.quadcap.sql.index.BtreeCursor.subtreeSize().

String com.quadcap.sql.index.BtreeCursor.t (   )  [package]

Definition at line 732 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.blocks, com.quadcap.sql.index.BtreeCursor.depth, and com.quadcap.sql.index.BtreeCursor.pointers. Referenced by com.quadcap.sql.index.BtreeCursor.itest().

final long com.quadcap.sql.index.BtreeCursor.tick (   )  [static, package]

Definition at line 859 of file BtreeCursor.java. Referenced by com.quadcap.sql.index.BtreeCursor.kshow(), and com.quadcap.sql.index.BtreeCursor.ktest().

String com.quadcap.sql.index.BtreeCursor.toString (   )

Definition at line 724 of file BtreeCursor.java. References com.quadcap.sql.index.BtreeCursor.tree. Referenced by com.quadcap.sql.index.BtreeCursor.absolute(), com.quadcap.sql.index.BtreeCursor.afterLast(), com.quadcap.sql.index.BtreeCursor.beforeFirst(), com.quadcap.sql.index.BtreeCursor.delete(), com.quadcap.sql.index.BtreeCursor.insert(), com.quadcap.sql.index.BtreeCursor.next(), com.quadcap.sql.index.BtreeCursor.prev(), com.quadcap.sql.index.BtreeCursor.replace(), and com.quadcap.sql.index.BtreeCursor.seek().

void com.quadcap.sql.index.BtreeCursor.unsetup (