package org.rrd4j.data;
/**
* Abstract class to be used for custom datasources.
*
* <p>If you wish to use a custom datasource in a graph, you should create a class implementing this interface
* that represents that datasource, and then pass this class on to the RrdGraphDef.</p>
*/
public abstract class Plottable {
/**
* Retrieves datapoint value based on a given timestamp.
* Use this method if you only have one series of data in this class.
*
* @param timestamp Timestamp in seconds for the datapoint.
* @return Double value of the datapoint.
*/
public double getValue(long timestamp) {
return Double.NaN;
}
}