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org.hsqldb
Class ReverseDatabaseFile  

java.lang.Object
  java.io.RandomAccessFile
      org.hsqldb.DatabaseFile
          org.hsqldb.ReverseDatabaseFile

All Implemented Interfaces:

java.io.DataInput, java.io.DataOutput

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class ReverseDatabaseFile

extends DatabaseFile

Cache class declaration

The cache class implements the handling of reversed text table caches.

Version:

1.7.0

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Field Summary
protected  int	count
protected  byte[]	in
protected  int	index
private  long	max
protected  long	pos
private  int	size

 

Fields inherited from class java.io.RandomAccessFile

 

Constructor Summary
(package private)	ReverseDatabaseFile(java.lang.String name, java.lang.String mode, int inSize)

 

Method Summary
void	close()           This method closes the file and frees up all file related system resources.
long	getFilePointer()           This method returns the current offset in the file at which the next read or write will occur
int	read()           This method reads a single byte of data from the file and returns it as an integer.
int	read(byte[] b)           This method reads bytes from the file into the specified array.
int	readInteger()
void	readSeek(long newPos)
protected  void	realSeek(long newPos)
void	seek(long newPos)           This method sets the current file position to the specified offset from the beginning of the file.
void	write(byte[] b)           This method writes all the bytes in the specified array to the file.
void	writeInteger(int i)

 

Methods inherited from class java.io.RandomAccessFile

getChannel, getFD, length, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, setLength, skipBytes, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

 

Methods inherited from class java.lang.Object

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

 

Field Detail

size

private int size

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max

private long max

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in

protected byte[] in

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pos

protected long pos

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index

protected int index

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count

protected int count

Constructor Detail

ReverseDatabaseFile

ReverseDatabaseFile(java.lang.String name,
                    java.lang.String mode,
                    int inSize)
              throws java.io.FileNotFoundException,
                     java.io.IOException

Method Detail

readSeek

public void readSeek(long newPos)
              throws java.io.IOException

Overrides:

readSeek in class DatabaseFile

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read

public int read()
         throws java.io.IOException

Description copied from class: java.io.RandomAccessFile

This method reads a single byte of data from the file and returns it as an integer.

Overrides:

read in class DatabaseFile

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readInteger

public int readInteger()
                throws java.io.IOException

Overrides:

readInteger in class DatabaseFile

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getFilePointer

public long getFilePointer()
                    throws java.io.IOException

Description copied from class: java.io.RandomAccessFile

This method returns the current offset in the file at which the next read or write will occur

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realSeek

protected void realSeek(long newPos)
                 throws java.io.IOException

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seek

public void seek(long newPos)
          throws java.io.IOException

Description copied from class: java.io.RandomAccessFile

This method sets the current file position to the specified offset from the beginning of the file. Note that some operating systems will allow the file pointer to be set past the current end of the file.

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read

public int read(byte[] b)
         throws java.io.IOException

Description copied from class: java.io.RandomAccessFile

This method reads bytes from the file into the specified array. The bytes are stored starting at the beginning of the array and up to buf.length bytes can be read.

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write

public void write(byte[] b)
           throws java.io.IOException

Description copied from class: java.io.RandomAccessFile

This method writes all the bytes in the specified array to the file. The file must be open read-write in order for this operation to succeed.

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writeInteger

public void writeInteger(int i)
                  throws java.io.IOException

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close

public void close()
           throws java.io.IOException

Description copied from class: java.io.RandomAccessFile

This method closes the file and frees up all file related system resources. Since most operating systems put a limit on how many files may be opened at any given time, it is a good idea to close all files when no longer needed to avoid hitting this limit

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Overview  Package   Class  Use  Deprecated  Index
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