org.rrd4j.core

Class XmlReader

java.lang.Object

org.rrd4j.core.DataImporter

org.rrd4j.core.XmlReader

All Implemented Interfaces:

Closeable, AutoCloseable

class XmlReader
extends DataImporter

Reader for importing RRD data from XML format.

This class extends DataImporter to provide functionality for reading RRD definitions and data from XML files. It parses the XML structure and provides methods to access various RRD components like datasources, archives, and their properties.

Constructor Summary

Constructors

Constructor and Description
XmlReader(String xmlFilePath) Creates an XmlReader for the specified XML file.

Method Summary

Modifier and Type	Method and Description
double	getAccumValue(int dsIndex)
int	getArcCount()
ConsolFun	getConsolFun(int arcIndex)
int	getDsCount()
String	getDsName(int dsIndex)
DsType	getDsType(int dsIndex)
long	getHeartbeat(int dsIndex)
long	getLastUpdateTime() Gets the last update time from the XML file.
double	getLastValue(int dsIndex)
double	getMaxValue(int dsIndex)
double	getMinValue(int dsIndex)
long	getNanSeconds(int dsIndex)
int	getRows(int arcIndex)
double	getStateAccumValue(int arcIndex, int dsIndex)
int	getStateNanSteps(int arcIndex, int dsIndex)
long	getStep() Gets the step interval from the XML file.
int	getSteps(int arcIndex)
double[]	getValues(int arcIndex, int dsIndex)
String	getVersion() Gets the RRD version from the XML file.
double	getXff(int arcIndex)

Methods inherited from class org.rrd4j.core.DataImporter

close, getEstimatedSize, release

Methods inherited from class java.lang.Object

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

Constructor Detail

XmlReader

XmlReader(String xmlFilePath)
   throws IOException

Creates an XmlReader for the specified XML file.

Parameters:

xmlFilePath - the path to the XML file to read

Throws:

IOException - if an I/O error occurs while reading the file

Method Detail

getAccumValue

public double getAccumValue(int dsIndex)

Specified by:

getAccumValue in class DataImporter

getArcCount

public int getArcCount()

Specified by:

getArcCount in class DataImporter

getConsolFun

public ConsolFun getConsolFun(int arcIndex)

Specified by:

getConsolFun in class DataImporter

getDsCount

public int getDsCount()

Specified by:

getDsCount in class DataImporter

getDsName

public String getDsName(int dsIndex)

Specified by:

getDsName in class DataImporter

getDsType

public DsType getDsType(int dsIndex)

Specified by:

getDsType in class DataImporter

getHeartbeat

public long getHeartbeat(int dsIndex)

Specified by:

getHeartbeat in class DataImporter

getLastUpdateTime

public long getLastUpdateTime()

Gets the last update time from the XML file.

Specified by:

getLastUpdateTime in class DataImporter

Returns:

the last update time as Unix timestamp

getLastValue

public double getLastValue(int dsIndex)

Specified by:

getLastValue in class DataImporter

getMaxValue

public double getMaxValue(int dsIndex)

Specified by:

getMaxValue in class DataImporter

getMinValue

public double getMinValue(int dsIndex)

Specified by:

getMinValue in class DataImporter

getNanSeconds

public long getNanSeconds(int dsIndex)

Specified by:

getNanSeconds in class DataImporter

getRows

public int getRows(int arcIndex)

Specified by:

getRows in class DataImporter

getStateAccumValue

public double getStateAccumValue(int arcIndex,
                                 int dsIndex)

Specified by:

getStateAccumValue in class DataImporter

getStateNanSteps

public int getStateNanSteps(int arcIndex,
                            int dsIndex)

Specified by:

getStateNanSteps in class DataImporter

getStep

public long getStep()

Gets the step interval from the XML file.

Specified by:

getStep in class DataImporter

Returns:

the step interval in seconds

getSteps

public int getSteps(int arcIndex)

Specified by:

getSteps in class DataImporter

getValues

public double[] getValues(int arcIndex,
                          int dsIndex)

Specified by:

getValues in class DataImporter

getVersion

public String getVersion()

Gets the RRD version from the XML file.

Specified by:

getVersion in class DataImporter

Returns:

the version string

getXff

public double getXff(int arcIndex)

Specified by:

getXff in class DataImporter