org.epics.pvmanager.timecache.source

Interface DataSource

All Known Subinterfaces:

DataStorage

All Known Implementing Classes:

SimpleFileDataSource, SimpleMemoryStorage

public interface DataSource

Retrieves samples from a source.

Author:

Fred Arnaud (Sopra Group) - ITER

Method Summary

Methods

Modifier and Type	Method and Description
DataChunk	getData(String channelName, org.epics.util.time.Timestamp from) Read samples from source ordered by Timestamp and starting with the specified one.

Method Detail

getData

DataChunk getData(String channelName,
                org.epics.util.time.Timestamp from)

Read samples from source ordered by Timestamp and starting with the specified one. Polled by DataRequestThread.

Parameters:

channelName - channel to read.

from - lowest Timestamp of the first returned sample.

Returns:

DataChunk a chunk of ordered samples with all Timestamp superior to the specified argument.