org.brandao.brcache.collections.fileswapper

Class AbstractEntityFile<T>

java.lang.Object

org.brandao.brcache.collections.fileswapper.AbstractEntityFile<T>

All Implemented Interfaces:

EntityFile<T>

Direct Known Subclasses:

DataBlockEntityFile, SimpleIndexEntityFile

public abstract class AbstractEntityFile<T>
extends Object
implements EntityFile<T>

Field Summary

Fields

Modifier and Type	Field and Description
protected int	batchLength
protected File	file
protected FileAccess	fileAccess
protected int	firstRecord
protected ReadWriteLock	lock
protected long	offset
protected int	recordLength

Constructor Summary

Constructors

Constructor and Description
AbstractEntityFile(File file)

Method Summary

Methods

Modifier and Type	Method and Description
void	batchWrite(List<T> entities)
void	close()
void	createNewFile()
void	delete()
boolean	exists()
void	flush()
File	getAbsoluteFile()
String	getAbsolutePath()
int	getBatchLength()
ReadWriteLock	getLock()
String	getName()
long	getOffset()
long	length()
void	open()
T	read()
protected abstract T	read(DataInputStream stream)
protected void	readHeader()
protected abstract void	readMetaData(DataInputStream srteam)
void	seek(long value)
void	setBatchLength(int value)
void	setLength(long value)
protected abstract void	write(DataOutputStream stream, T entity)
void	write(T entity)
protected abstract void	writeEOF(DataOutputStream stream)
protected void	writeHeader()
protected abstract void	writeMetaData(DataOutputStream stream)

Methods inherited from class java.lang.Object

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

Field Detail

recordLength

protected int recordLength

firstRecord

protected int firstRecord

offset

protected long offset

file

protected File file

fileAccess

protected FileAccess fileAccess

lock

protected ReadWriteLock lock

batchLength

protected int batchLength

Constructor Detail

AbstractEntityFile

public AbstractEntityFile(File file)

Method Detail

getOffset

public long getOffset()
               throws IOException

Specified by:

getOffset in interface EntityFile<T>

Throws:

IOException

getName

public String getName()

Specified by:

getName in interface EntityFile<T>

setBatchLength

public void setBatchLength(int value)

Specified by:

setBatchLength in interface EntityFile<T>

getBatchLength

public int getBatchLength()

Specified by:

getBatchLength in interface EntityFile<T>

getAbsoluteFile

public File getAbsoluteFile()

Specified by:

getAbsoluteFile in interface EntityFile<T>

getAbsolutePath

public String getAbsolutePath()

Specified by:

getAbsolutePath in interface EntityFile<T>

createNewFile

public void createNewFile()
                   throws IOException

Specified by:

createNewFile in interface EntityFile<T>

Throws:

IOException

writeHeader

protected void writeHeader()
                    throws IOException

Throws:

IOException

writeMetaData

protected abstract void writeMetaData(DataOutputStream stream)
                               throws IOException

Throws:

IOException

open

public void open()
          throws IOException

Specified by:

open in interface EntityFile<T>

Throws:

IOException

readHeader

protected void readHeader()
                   throws IOException

Throws:

IOException

readMetaData

protected abstract void readMetaData(DataInputStream srteam)
                              throws IOException

Throws:

IOException

seek

public void seek(long value)
          throws IOException

Specified by:

seek in interface EntityFile<T>

Throws:

IOException

batchWrite

public void batchWrite(List<T> entities)
                throws IOException

Specified by:

batchWrite in interface EntityFile<T>

Throws:

IOException

write

public void write(T entity)
           throws IOException

Specified by:

write in interface EntityFile<T>

Throws:

IOException

writeEOF

protected abstract void writeEOF(DataOutputStream stream)
                          throws IOException

Throws:

IOException

write

protected abstract void write(DataOutputStream stream,
         T entity)
                       throws IOException

Throws:

IOException

read

public T read()
       throws IOException

Specified by:

read in interface EntityFile<T>

Throws:

IOException

read

protected abstract T read(DataInputStream stream)
                   throws IOException

Throws:

IOException

length

public long length()
            throws IOException

Specified by:

length in interface EntityFile<T>

Throws:

IOException

setLength

public void setLength(long value)
               throws IOException

Specified by:

setLength in interface EntityFile<T>

Throws:

IOException

flush

public void flush()
           throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface EntityFile<T>

Throws:

IOException

delete

public void delete()
            throws IOException

Throws:

IOException

exists

public boolean exists()

Specified by:

exists in interface EntityFile<T>

getLock

public ReadWriteLock getLock()

Specified by:

getLock in interface EntityFile<T>