org.siebengeisslein.core
Class BTreeNode

java.lang.Object
  org.siebengeisslein.core.BTreeNode

public class BTreeNode
extends java.lang.Object

Field Summary

static int	BYTE_NODE_SIZE
static int	BYTES_PER_LONG
static long	INVALID
static int	MAX_ENTRIES
static int	NODE_SIZE
static int	OID_START_IDX
static int	VALUE_START_IDX

Constructor Summary

BTreeNode()

Method Summary

void	addGarbage(java.util.SortedMap<java.lang.Long,java.lang.Long> result)
void	addReferenced(java.util.Set<java.lang.Long> result)
void	addValue(long oid, long value)
int	findIndex(long oid, boolean exact)
long	getAddLockIndex()
long	getLastValue()
int	getSize()
long	getValue(long oid, boolean exact)
long	getValueAtIndex(int index)
void	init()
void	init(long startOID)
void	merge(BTreeNode node)
void	moveEntries(DataStore store)
void	read(java.nio.channels.ReadableByteChannel channel)
void	removeIndex(int index)
void	removeOID(long oid)
void	resetAllGCFlags()
void	setValue(long oid, long value)
void	write(java.nio.channels.WritableByteChannel channel)

Methods inherited from class java.lang.Object

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

Field Detail

NODE_SIZE

public static final int NODE_SIZE

See Also:

Constant Field Values

MAX_ENTRIES

public static final int MAX_ENTRIES

See Also:

Constant Field Values

BYTES_PER_LONG

public static final int BYTES_PER_LONG

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Constant Field Values

BYTE_NODE_SIZE

public static final int BYTE_NODE_SIZE

See Also:

Constant Field Values

OID_START_IDX

public static final int OID_START_IDX

See Also:

Constant Field Values

VALUE_START_IDX

public static final int VALUE_START_IDX

See Also:

Constant Field Values

INVALID

public static final long INVALID

See Also:

Constant Field Values

Constructor Detail

BTreeNode

public BTreeNode()

Method Detail

init

public void init()

init

public void init(long startOID)

write

public void write(java.nio.channels.WritableByteChannel channel)
           throws java.io.IOException

Throws:

java.io.IOException

read

public void read(java.nio.channels.ReadableByteChannel channel)
          throws java.io.IOException

Throws:

java.io.IOException

setValue

public void setValue(long oid,
                     long value)
              throws UnknownOIDException

Throws:

UnknownOIDException

getValue

public long getValue(long oid,
                     boolean exact)
              throws UnknownOIDException

Throws:

UnknownOIDException

getAddLockIndex

public long getAddLockIndex()

getValueAtIndex

public long getValueAtIndex(int index)

addValue

public void addValue(long oid,
                     long value)

getSize

public int getSize()

getLastValue

public long getLastValue()

findIndex

public int findIndex(long oid,
                     boolean exact)
              throws UnknownOIDException

Throws:

UnknownOIDException

merge

public void merge(BTreeNode node)

resetAllGCFlags

public void resetAllGCFlags()

addReferenced

public void addReferenced(java.util.Set<java.lang.Long> result)

addGarbage

public void addGarbage(java.util.SortedMap<java.lang.Long,java.lang.Long> result)

removeIndex

public void removeIndex(int index)

removeOID

public void removeOID(long oid)
               throws UnknownOIDException

Throws:

UnknownOIDException

moveEntries

public void moveEntries(DataStore store)
                 throws java.io.IOException

Throws:

java.io.IOException