org.siebengeisslein.core
Class BTree

java.lang.Object
  org.siebengeisslein.core.BTree

public class BTree
extends java.lang.Object

Field Summary

static int	DEPTH
static java.lang.String	EXT_OBJID

Constructor Summary

BTree(Config config, TransactionManager transactionManager, WriteBufferPool writePool, CoreTransactionSequence seq, boolean create)

Method Summary

void	close()
void	commit()
void	compressStore(DataStoreImpl store)
protected CoreTransaction	createTransaction(GCState gcState) This method is provided, so Transaction-creation can be overriden (usefull for testing).
BTreeNodeCache	getCache()
FreeBlockList	getFBL()
java.util.SortedMap<java.lang.Long,java.lang.Long>	getGarbageObjects()
long	getObjID(FlushThread flushThread, GCState gcState)
long	getObjIDs(int count, FlushThread flushThread, GCState gcState)
java.util.Set<java.lang.Long>	getReferencedOIDs()
long	getValue(long oid)
long	incObjIDs(int count, FlushThread flushThread, GCState gcState)
void	recovered()
void	remove(long oid)
void	removeAllGCFlags()
void	setGCEvaluated(long oid)
void	setGCReferenced(long oid)
void	setValue(long oid, long value, boolean gcRunning)

Methods inherited from class java.lang.Object

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

Field Detail

EXT_OBJID

public static final java.lang.String EXT_OBJID

See Also:

Constant Field Values

DEPTH

public static final int DEPTH

See Also:

Constant Field Values

Constructor Detail

BTree

public BTree(Config config,
             TransactionManager transactionManager,
             WriteBufferPool writePool,
             CoreTransactionSequence seq,
             boolean create)
      throws java.io.IOException

Throws:

java.io.IOException

Method Detail

recovered

public void recovered()
               throws java.io.IOException

Throws:

java.io.IOException

getCache

public BTreeNodeCache getCache()

getFBL

public FreeBlockList getFBL()

createTransaction

protected CoreTransaction createTransaction(GCState gcState)
                                     throws java.io.IOException

This method is provided, so Transaction-creation can be overriden (usefull for testing). TODO: Move this method to some sensible place !?!

Throws:

java.io.IOException

getObjID

public long getObjID(FlushThread flushThread,
                     GCState gcState)
              throws java.io.IOException

Throws:

java.io.IOException

getObjIDs

public long getObjIDs(int count,
                      FlushThread flushThread,
                      GCState gcState)
               throws java.io.IOException

Throws:

java.io.IOException

incObjIDs

public long incObjIDs(int count,
                      FlushThread flushThread,
                      GCState gcState)
               throws java.io.IOException

Throws:

java.io.IOException

getValue

public long getValue(long oid)
              throws java.io.IOException,
                     UnknownOIDException

Throws:

java.io.IOException

UnknownOIDException

setValue

public void setValue(long oid,
                     long value,
                     boolean gcRunning)
              throws java.io.IOException,
                     UnknownOIDException

Throws:

java.io.IOException

UnknownOIDException

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

commit

public void commit()
            throws java.io.IOException

Throws:

java.io.IOException

setGCReferenced

public void setGCReferenced(long oid)
                     throws UnknownOIDException,
                            java.io.IOException

Throws:

UnknownOIDException

java.io.IOException

setGCEvaluated

public void setGCEvaluated(long oid)
                    throws UnknownOIDException,
                           java.io.IOException

Throws:

UnknownOIDException

java.io.IOException

removeAllGCFlags

public void removeAllGCFlags()
                      throws java.io.IOException

Throws:

java.io.IOException

getGarbageObjects

public java.util.SortedMap<java.lang.Long,java.lang.Long> getGarbageObjects()
                                                                     throws java.io.IOException

Throws:

java.io.IOException

getReferencedOIDs

public java.util.Set<java.lang.Long> getReferencedOIDs()
                                                throws java.io.IOException

Throws:

java.io.IOException

compressStore

public void compressStore(DataStoreImpl store)
                   throws java.io.IOException

Throws:

java.io.IOException

remove

public void remove(long oid)
            throws UnknownOIDException,
                   java.io.IOException

Throws:

UnknownOIDException

java.io.IOException