java.lang.Object

org.rrd4j.core.ArcState

All Implemented Interfaces:: RrdUpdater<ArcState>

public class ArcState
extends Object
implements RrdUpdater<ArcState>

Class to represent internal RRD archive state for a single datasource. Objects of this class are never manipulated directly, it's up to Rrd4j to manage internal archive states.

Author:: Sasa Markovic

Constructor Summary

Constructors

Constructor Description

ArcState(Archive parentArc, boolean shouldInitialize)

Method Summary

Modifier and Type	Method	Description
`(package private) void`	`appendXml(XmlWriter writer)`
`void`	`copyStateTo(ArcState arcState)`	copyStateTo.
`(package private) String`	`dump()`
`double`	`getAccumValue()`	Returns the value accumulated so far.
`long`	`getNanSteps()`	Returns the number of currently accumulated NaN steps.
`Archive`	`getParent()`	Returns the Archive object to which this ArcState object belongs.
`RrdAllocator`	`getRrdAllocator()`	Required to implement RrdUpdater interface.
`RrdBackend`	`getRrdBackend()`	Returns the underlying storage (backend) object which actually performs all I/O operations.
`(package private) void`	`setAccumValue(double value)`
`(package private) void`	`setNanSteps(long value)`

Methods inherited from class java.lang.Object

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

Constructor Details
- ArcState
  
  ArcState(Archive parentArc, boolean shouldInitialize) throws IOException
  
  Throws:
  
  IOException
Method Details
- dump
  
  String dump() throws IOException
  
  Throws:
  
  IOException
- setNanSteps
  
  void setNanSteps(long value) throws IOException
  
  Throws:
  
  IOException
- getNanSteps
  
  public long getNanSteps() throws IOException
  
  Returns the number of currently accumulated NaN steps.
  
  Returns:
  
  Number of currently accumulated NaN steps.
  
  Throws:
  
  IOException - Thrown in case of I/O error
- setAccumValue
  
  void setAccumValue(double value) throws IOException
  
  Throws:
  
  IOException
- getAccumValue
  
  public double getAccumValue() throws IOException
  
  Returns the value accumulated so far.
  
  Returns:
  
  Accumulated value
  
  Throws:
  
  IOException - Thrown in case of I/O error
- getParent
  
  public Archive getParent()
  
  Returns the Archive object to which this ArcState object belongs.
  
  Returns:
  
  Parent Archive object.
- appendXml
  
  void appendXml(XmlWriter writer) throws IOException
  
  Throws:
  
  IOException
- copyStateTo
  
  public void copyStateTo(ArcState arcState) throws IOException
  
  copyStateTo.
  Copies object's internal state to another ArcState object.
  
  Specified by:
  
  copyStateTo in interface RrdUpdater<ArcState>
  
  Parameters:
  
  arcState - a RrdUpdater object.
  
  Throws:
  
  IOException - if any.
- getRrdBackend
  
  public RrdBackend getRrdBackend()
  
  Returns the underlying storage (backend) object which actually performs all I/O operations.
  
  Specified by:
  
  getRrdBackend in interface RrdUpdater<ArcState>
  
  Returns:
  
  I/O backend object
- getRrdAllocator
  
  public RrdAllocator getRrdAllocator()
  
  Required to implement RrdUpdater interface. You should never call this method directly.
  
  Specified by:
  
  getRrdAllocator in interface RrdUpdater<ArcState>
  
  Returns:
  
  Allocator object

Class ArcState

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Details

Method Details