Package com.semedy.reasoner.edb.persistentstore

Class BplusBlob

java.lang.Object

com.semedy.reasoner.edb.persistentstore.BplusBlob

All Implemented Interfaces:

Closeable, AutoCloseable

public class BplusBlob
extends Object
implements Closeable

A blob ist a relation consisting of binary tuples
[id,blob] where id is a unique long and the blob is a byte array

Author:

angele

Field Summary

Fields

Modifier and Type	Field	Description
DataFile	_bufferFile	the buffered file for data
BPlusTree<long[],TupleBuffer>	_keys	the bplus tree for symbols

Constructor Summary

Constructors

Constructor	Description
BplusBlob(int nodesize, String dir, String name, String endtreefile, String enddatafile, boolean compress)
BplusBlob(BPlusTree<long[],TupleBuffer> btreelong)

Method Summary

Modifier and Type	Method	Description
boolean	checkSanity(String message)	check sanity of tree
void	clear()
void	close()
boolean	containsKey(long key)
boolean	containsKey(TupleBuffer key)
void	delete()
void	flush()
byte[]	getBlob(long key)
BPlusTree<long[],TupleBuffer>	getKeys()
int	getLength(long[] key)
boolean	isBulkMode()
long	put(long key, byte[] data)
long	putCompressed(long key, byte[] compressedData, int originalLength)
boolean	remove(long key)
boolean	searchForRecord(long record)
void	setBulkMode(boolean mode)
long	size()
void	transactionCommit()
void	transactionRollback()

Methods inherited from class java.lang.Object

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

Field Details

_keys

public BPlusTree<long[],TupleBuffer> _keys

the bplus tree for symbols

_bufferFile

public DataFile _bufferFile

the buffered file for data

Constructor Details

BplusBlob

public BplusBlob(int nodesize,
 String dir,
 String name,
 String endtreefile,
 String enddatafile,
 boolean compress)
          throws IOException,
EDBException

Throws:

IOException

EDBException

BplusBlob

public BplusBlob(BPlusTree<long[],TupleBuffer> btreelong)

Method Details

searchForRecord

public boolean searchForRecord(long record)
                        throws IOException

Throws:

IOException

checkSanity

public boolean checkSanity(String message)
                    throws IOException

check sanity of tree

Returns:

Throws:

IOException

put

public long put(long key,
 byte[] data)
         throws IOException,
EDBException

Throws:

IOException

EDBException

putCompressed

public long putCompressed(long key,
 byte[] compressedData,
 int originalLength)
                   throws IOException,
EDBException

Throws:

IOException

EDBException

getLength

public int getLength(long[] key)
              throws IOException

Throws:

IOException

getBlob

public byte[] getBlob(long key)
               throws IOException

Throws:

IOException

containsKey

public boolean containsKey(long key)
                    throws IOException

Throws:

IOException

containsKey

public boolean containsKey(TupleBuffer key)
                    throws IOException

Throws:

IOException

flush

public void flush()
           throws IOException,
EDBException

Throws:

IOException

EDBException

setBulkMode

public void setBulkMode(boolean mode)
                 throws IOException,
EDBException

Throws:

IOException

EDBException

isBulkMode

public boolean isBulkMode()

clear

public void clear()
           throws IOException,
EDBException

Throws:

IOException

EDBException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

delete

public void delete()
            throws IOException

Throws:

IOException

transactionRollback

public void transactionRollback()
                         throws IOException

Throws:

IOException

transactionCommit

public void transactionCommit()
                       throws IOException,
EDBException

Throws:

IOException

EDBException

remove

public boolean remove(long key)
               throws IOException,
EDBException

Throws:

IOException

EDBException

size

public long size()

getKeys

public BPlusTree<long[],TupleBuffer> getKeys()