org.netbeans.mdr.persistence.btreeimpl.btreestorage
Class TransactionCache

java.lang.Object
  org.netbeans.mdr.persistence.btreeimpl.btreestorage.TransactionCache

public class TransactionCache
extends java.lang.Object

Nested Class Summary

class	TransactionCache.CacheIterator
static class	TransactionCache.Record

Field Summary

static byte	OP_DELETE
static byte	OP_INSERT
static byte	OP_REPLACE

Constructor Summary

TransactionCache()

Method Summary

void	addDeleted(MOFID id) adds one delete operation
void	addInserted(MOFID id, byte[] value) adds one insert operation
void	addReplaced(MOFID id, byte[] value) adds one replace operation
void	clear() Resets cache (to store no operations).
void	commit() Commits operations temporarly stored in @link #operations.
boolean	containsCommitedData()
TransactionCache.CacheIterator	iterator() Returns cache iterator.
boolean	tresholdReached()

Methods inherited from class java.lang.Object

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

Field Detail

OP_INSERT

public static final byte OP_INSERT

See Also:

Constant Field Values

OP_DELETE

public static final byte OP_DELETE

See Also:

Constant Field Values

OP_REPLACE

public static final byte OP_REPLACE

See Also:

Constant Field Values

Constructor Detail

TransactionCache

public TransactionCache()

Method Detail

tresholdReached

public boolean tresholdReached()

Returns:

true if transaction cache treshold has been reached

containsCommitedData

public boolean containsCommitedData()

Returns:

true if cache stores some commited operations

clear

public void clear()

Resets cache (to store no operations).

addInserted

public void addInserted(MOFID id,
                        byte[] value)

adds one insert operation

addDeleted

public void addDeleted(MOFID id)

adds one delete operation

addReplaced

public void addReplaced(MOFID id,
                        byte[] value)

adds one replace operation

commit

public void commit()

Commits operations temporarly stored in @link #operations.

iterator

public TransactionCache.CacheIterator iterator()

Returns cache iterator.