ArcState (Javadocs [I2P+ 2.13.0+] - API Version 0.9.70+)

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.

Constructor Summary
Constructors
Constructor and Description
ArcState(Archive parentArc, boolean shouldInitialize)
Owning archive.

Constructors
Constructor and Description
`ArcState(Archive parentArc, boolean shouldInitialize)` Owning archive.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`(package private) void`	`appendXml(XmlWriter writer)` Append XML representation.
`void`	`copyStateTo(ArcState arcState)` copyStateTo.
`(package private) String`	`dump()` Dump state as a string.
`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)` Set the accumulated value.
`(package private) void`	`setNanSteps(long value)` Set the NaN steps count.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ArcState
```
ArcState(Archive parentArc,
         boolean shouldInitialize)
  throws IOException
```
    Owning archive.
    Parameters:
    parentArc - the owning archive
    shouldInitialize - whether to initialize accumulator and NaN steps
    Throws:
    IOException - if an I/O error occurs
- Method Detail
  - appendXml
```
void appendXml(XmlWriter writer)
        throws IOException
```
    Append XML representation.
    Parameters:
    writer - the XML writer
    Throws:
    IOException - if an I/O error occurs
  - 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.
  - dump
```
String dump()
     throws IOException
```
    Dump state as a string.
    Returns:
    dump string
    Throws:
    IOException - if an I/O error occurs
  - getAccumValue
```
public double getAccumValue()
                     throws IOException
```
    Returns the value accumulated so far.
    Returns:
    Accumulated value
    Throws:
    IOException - Thrown in case of I/O error
  - 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
  - getParent
```
public Archive getParent()
```
    Returns the Archive object to which this ArcState object belongs.
    Returns:
    Parent Archive 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
  - 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
  - setAccumValue
```
void setAccumValue(double value)
            throws IOException
```
    Set the accumulated value.
    Parameters:
    value - the value to set
    Throws:
    IOException - if an I/O error occurs
  - setNanSteps
```
void setNanSteps(long value)
          throws IOException
```
    Set the NaN steps count.
    Parameters:
    value - the value to set
    Throws:
    IOException - if an I/O error occurs

Class ArcState

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ArcState

Method Detail

appendXml

copyStateTo

dump

getAccumValue

getNanSteps

getParent

getRrdAllocator

getRrdBackend

setAccumValue

setNanSteps