org.rrd4j.core.jrrd

Class RRDFile

java.lang.Object

org.rrd4j.core.jrrd.RRDFile

All Implemented Interfaces:

Constants

class RRDFile
extends Object
implements Constants

This class is used read information from an RRD file. Writing to RRD files is not currently supported. It uses NIO's RandomAccessFile to read the file

Currently this can read RRD files that were generated on Solaris (Sparc) and Linux (x86).

Version:

$Revision: 1.1 $

Field Summary

Fields inherited from interface org.rrd4j.core.jrrd.Constants

CF_NAM_SIZE, COOKIE, DS_NAM_SIZE, DST_SIZE, FLOAT_COOKIE, LAST_DS_LEN, MAX_SUPPORTED_VERSION, SIZE_OF_DOUBLE, UNDEFINED_VERSION, UNDEFINED_VERSION_AS_INT, VERSION_WITH_LAST_UPDATE_SEC

Constructor Summary

Constructors

Constructor and Description
RRDFile(File file)
RRDFile(String name)

Method Summary

Modifier and Type	Method and Description
(package private) int	align()
(package private) int	align(int boundary)
(package private) void	close()
(package private) int	getAlignment()
(package private) int	getBits()
(package private) long	getFilePointer()
(package private) UnivalArray	getUnivalArray(int size)
(package private) long	info()
(package private) boolean	isBigEndian()
(package private) void	read(ByteBuffer bb)
(package private) double	readDouble()
(package private) int	readInt()
(package private) int	readLong()
(package private) String	readString(int maxLength)
void	seek(long position)
void	seekToEndOfFile()
(package private) void	skipBytes(int n)

Methods inherited from class java.lang.Object

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

Constructor Detail

RRDFile

RRDFile(File file)
 throws IOException

Throws:

IOException

RRDFile

RRDFile(String name)
 throws IOException

Throws:

IOException

Method Detail

align

int align()

align

int align(int boundary)

close

void close()
    throws IOException

Throws:

IOException

getAlignment

int getAlignment()

getBits

int getBits()

Returns:

the long size in bits for this file

getFilePointer

long getFilePointer()

getUnivalArray

UnivalArray getUnivalArray(int size)

info

long info()

isBigEndian

boolean isBigEndian()

read

void read(ByteBuffer bb)

readDouble

double readDouble()

readInt

int readInt()

readLong

int readLong()

readString

String readString(int maxLength)

seek

public void seek(long position)

seekToEndOfFile

public void seekToEndOfFile()

skipBytes

void skipBytes(int n)