Package com.arcadedb.engine

Class PaginatedFile

java.lang.Object

com.arcadedb.engine.PaginatedFile

public class PaginatedFile
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PaginatedFile.MODE

Constructor Summary

Constructors

Modifier	Constructor	Description
	PaginatedFile()
protected	PaginatedFile(String filePath, PaginatedFile.MODE mode)

Method Summary

Modifier and Type	Method	Description
long	calculateChecksum()
void	close()
void	drop()
void	flush()
String	getComponentName()
String	getFileExtension()
int	getFileId()
String	getFileName()
String	getFilePath()
File	getOSFile()
int	getPageSize()
long	getSize()
long	getTotalPages()
int	getVersion()
boolean	isOpen()
void	read(ImmutablePage page)
void	rename(String newFileName)
void	setFileId(int fileId)
String	toString()
int	write(MutablePage page)	Returns the byte written.

Methods inherited from class java.lang.Object

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

Constructor Detail

PaginatedFile

public PaginatedFile()

PaginatedFile

protected PaginatedFile(String filePath,
                        PaginatedFile.MODE mode)
                 throws FileNotFoundException

Throws:

FileNotFoundException

Method Detail

close

public void close()

rename

public void rename(String newFileName)
            throws IOException

Throws:

IOException

drop

public void drop()
          throws IOException

Throws:

IOException

getSize

public long getSize()
             throws IOException

Throws:

IOException

getTotalPages

public long getTotalPages()
                   throws IOException

Throws:

IOException

flush

public void flush()
           throws IOException

Throws:

IOException

getFileName

public String getFileName()

calculateChecksum

public long calculateChecksum()
                       throws IOException

Throws:

IOException

write

public int write(MutablePage page)
          throws IOException

Returns the byte written. Current implementation flushes always the entire page because (1) there is not a sensible increase of performance and (2) in case a page is modified multiple times before the flush now it's overwritten in the writeCache map.

Throws:

IOException

read

public void read(ImmutablePage page)
          throws IOException

Throws:

IOException

isOpen

public boolean isOpen()

getFilePath

public String getFilePath()

getComponentName

public String getComponentName()

getFileExtension

public String getFileExtension()

getFileId

public int getFileId()

getOSFile

public File getOSFile()

setFileId

public void setFileId(int fileId)

getPageSize

public int getPageSize()

getVersion

public int getVersion()

toString

public String toString()

Overrides:

toString in class Object