FileChannelVol

Volume
- org.mapdb.volume.FileChannelVol

```
public class FileChannelVol
extends Volume
```
Volume which uses FileChannel. Uses global lock and does not use mapped memory.

Field Summary

Fields
Modifier and Type	Field and Description
`static VolumeFactory`	`FACTORY`
`java.nio.channels.FileChannel`	`channel`
`java.io.File`	`file`
`java.nio.channels.FileLock`	`fileLock`
`java.util.concurrent.locks.Lock`	`growLock`
`boolean`	`readOnly`
`long`	`size`
`int`	`sliceSize`

Fields inherited from class org.mapdb.volume.Volume
LOG, UNSAFE_VOL_FACTORY, closed

Constructor Summary

Constructors
Constructor and Description

FileChannelVol()

FileChannelVol()

Constructors
Constructor and Description
`FileChannelVol()`
`FileChannelVol()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`checkFolder()`
`void`	`clear()`
`static void`	`clear()`
`void`	`close()`
`void`	`ensureAvailable()`
`byte`	`getByte()`
`void`	`getData()`
`DataInput2.ByteBuffer`	`getDataInput()`
`java.io.File`	`getFile()`
`boolean`	`getFileLocked()`
`int`	`getInt()`
`long`	`getLong()`
`boolean`	`isReadOnly()`
`boolean`	`isSliced()`
`long`	`length()`
`void`	`putByte()`
`void`	`putData()`
`void`	`putData()`
`void`	`putInt()`
`void`	`putLong()`
`void`	`readFully()`
`int`	`sliceSize()`
`void`	`sync()`
`void`	`truncate()`
`void`	`writeFully()`

Methods inherited from class org.mapdb.volume.Volume
assertZeroes, clear, clearOverlap, close, copyFrom, copyTo, copyTo, copyTo, deleteFile, ensureAvailable, fileLoad, finalize, getByte, getData, getDataInput, getDataInputOverlap, getFile, getFileLocked, getInt, getLong, getPackedLong, getSixLong, getUnsignedByte, getUnsignedShort, hash, isClosed, isReadOnly, isSliced, length, putByte, putData, putData, putDataOverlap, putInt, putLong, putPackedLong, putSixLong, putUnsignedByte, putUnsignedShort, sliceSize, sync, truncate

Field Detail

FACTORY
```
public static VolumeFactory FACTORY
```

file
```
public java.io.File file
```

sliceSize
```
public int sliceSize
```

channel

public java.nio.channels.FileChannel channel

readOnly
```
public boolean readOnly
```

fileLock

public java.nio.channels.FileLock fileLock

size
```
public long size
```

growLock

public java.util.concurrent.locks.Lock growLock

Constructor Detail

FileChannelVol
```
public FileChannelVol()
```

FileChannelVol
```
public FileChannelVol()
```

Method Detail

checkFolder
```
public static void checkFolder()
```

ensureAvailable
```
public void ensureAvailable()
```

truncate
```
public void truncate()
```

writeFully
```
public void writeFully()
```

putLong
```
public void putLong()
```

putInt
```
public void putInt()
```

putByte
```
public void putByte()
```

putData
```
public void putData()
```

putData
```
public void putData()
```

readFully
```
public void readFully()
```

getLong
```
public long getLong()
```

getInt
```
public int getInt()
```

getByte
```
public byte getByte()
```

getDataInput

public DataInput2.ByteBuffer getDataInput()

getData
```
public void getData()
```

close
```
public void close()
```

sync
```
public void sync()
```

sliceSize
```
public int sliceSize()
```

isSliced
```
public boolean isSliced()
```

length
```
public long length()
```

isReadOnly
```
public boolean isReadOnly()
```

getFile
```
public java.io.File getFile()
```

getFileLocked
```
public boolean getFileLocked()
```

clear
```
public void clear()
```

clear
```
public static void clear()
```

Class FileChannelVol

Field Summary

Fields inherited from class org.mapdb.volume.Volume

Constructor Summary

Method Summary

Methods inherited from class org.mapdb.volume.Volume

Field Detail

FACTORY

file

sliceSize

channel

readOnly

fileLock

size

growLock

Constructor Detail

FileChannelVol

FileChannelVol

Method Detail

checkFolder

ensureAvailable

truncate

writeFully

putLong

putInt

putByte

putData

putData

readFully

getLong

getInt

getByte

getDataInput

getData

close

sync

sliceSize

isSliced

length

isReadOnly

getFile

getFileLocked

clear

clear