com.ohmdb.filestore

Class FileStore

java.lang.Object

com.ohmdb.filestore.AbstractDataStore

com.ohmdb.filestore.FileStore

All Implemented Interfaces:

com.ohmdb.abstracts.DataStore, Runnable

public class FileStore
extends AbstractDataStore
implements com.ohmdb.abstracts.DataStore, Runnable

A block will be skipped if the first long number is negative!

Field Summary

Fields

Modifier and Type	Field and Description
static int	BLOCK_OVERHEAD
static int	BLOCK_SIZE
protected static int	BUF_SIZE
protected AtomicBoolean	finished
static int	FIRST_CAP
protected static int	HEADER_SIZE
protected static int	MAX_BLOCKS

Fields inherited from class com.ohmdb.filestore.AbstractDataStore

running

Constructor Summary

Constructors

Constructor and Description
FileStore(String filename, StoreLoader loader, StoreCodec<?> valueCodec, OhmDBStats stats, boolean loadOnly, WeakReference<com.ohmdb.api.Db> dbRef)

Method Summary

Methods

Modifier and Type	Method and Description
void	clear()
void	commit(com.ohmdb.abstracts.DatastoreTransaction tx)
void	delete(long key)
long	getFileSize()
Map<DbStats,Object>	getStats()
void	rollback(com.ohmdb.abstracts.DatastoreTransaction tx)
void	run()
void	shutdown()
void	stop()
FilestoreTransaction	transaction()
void	write(long key, Object value)

Methods inherited from class com.ohmdb.filestore.AbstractDataStore

checkActive

Methods inherited from class java.lang.Object

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

Field Detail

BLOCK_OVERHEAD

public static final int BLOCK_OVERHEAD

See Also:

Constant Field Values

FIRST_CAP

public static final int FIRST_CAP

See Also:

Constant Field Values

BLOCK_SIZE

public static final int BLOCK_SIZE

See Also:

Constant Field Values

BUF_SIZE

protected static final int BUF_SIZE

MAX_BLOCKS

protected static final int MAX_BLOCKS

HEADER_SIZE

protected static final int HEADER_SIZE

See Also:

Constant Field Values

finished

protected AtomicBoolean finished

Constructor Detail

FileStore

public FileStore(String filename,
         StoreLoader loader,
         StoreCodec<?> valueCodec,
         OhmDBStats stats,
         boolean loadOnly,
         WeakReference<com.ohmdb.api.Db> dbRef)

Method Detail

write

public void write(long key,
         Object value)
           throws IOException

Specified by:

write in interface com.ohmdb.abstracts.DataStore

Throws:

IOException

delete

public void delete(long key)
            throws IOException

Specified by:

delete in interface com.ohmdb.abstracts.DataStore

Throws:

IOException

getFileSize

public long getFileSize()

Specified by:

getFileSize in interface com.ohmdb.abstracts.DataStore

transaction

public FilestoreTransaction transaction()

Specified by:

transaction in interface com.ohmdb.abstracts.DataStore

getStats

public Map<DbStats,Object> getStats()

clear

public void clear()

Specified by:

clear in interface com.ohmdb.abstracts.DataStore

commit

public void commit(com.ohmdb.abstracts.DatastoreTransaction tx)

Specified by:

commit in interface com.ohmdb.abstracts.DataStore

rollback

public void rollback(com.ohmdb.abstracts.DatastoreTransaction tx)

Specified by:

rollback in interface com.ohmdb.abstracts.DataStore

run

public void run()

Specified by:

run in interface Runnable

stop

public void stop()

Specified by:

stop in interface com.ohmdb.abstracts.DataStore

Overrides:

stop in class AbstractDataStore

shutdown

public void shutdown()

Specified by:

shutdown in interface com.ohmdb.abstracts.DataStore

Overrides:

shutdown in class AbstractDataStore