PDef | Javadocs [I2P+]

java.lang.Object

org.rrd4j.data.Source

org.rrd4j.data.PDef

All Implemented Interfaces:: NonRrdSource

class PDefextends Source implements NonRrdSource

RRD PDEF (Plottable Data Source Definition) implementation.
Creates data sources from plottable objects that can provide values based on timestamps.

Field Summary
Fields
Modifier and Type
Field
Description
private final IPlottable
plottable
The object whose rendering is exposed as a graph source.
Fields inherited from class Source
timestamps, values
Modifier and Type
Field
Description
protected long[]
timestamps
timestamps corresponding to data values
protected double[]
values
data values
Constructor Summary
Constructors
Constructor
Description
PDef(String name, IPlottable plottable2)
Create a plottable backed by the named data source.
Method Summary
All Methods
Modifier and Type
Method
Description
void
calculate(long tStart, long tEnd, DataProcessor dataProcessor)
Read one value per timestamp from the plottable and store them.
Methods inherited from class Source
getName, getTimestamps, getValues, setTimestamps, setValues
Modifier and Type
Method
Description
(package private) String
getName()
Returns the source name.
(package private) long[]
getTimestamps()
The time, in seconds since the epoch, of each recorded value.
(package private) double[]
getValues()
Returns the data values.
(package private) void
setTimestamps(long[] timestamps)
Sets the timestamps.
(package private) void
setValues(double[] values)
Sets the data values.
Methods inherited from class Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- plottable
  private final IPlottable plottable
  The object whose rendering is exposed as a graph source.
Constructor Details
- PDef
  PDef(String name, IPlottable plottable2)
  Create a plottable backed by the named data source.
  Parameters:
  name - the name of the data source
  plottable2 - the plottable object to provide values
Method Details
- calculate
  public void calculate(long tStart, long tEnd, DataProcessor dataProcessor)
  Read one value per timestamp from the plottable and store them.
  Specified by:
  calculate in interface NonRrdSource
  Parameters:
  tStart - first timestamp of the interval, inclusive
  tEnd - last timestamp of the interval, exclusive
  dataProcessor - the processor receiving the computed values