ETLBulkStream

All Superinterfaces:

AutoCloseable, Closeable, EventStream, Iterable<Event>

All Known Implementing Classes:

FileBackedPBEventStream
```
public interface ETLBulkStream
extends EventStream
```
Event streams can optionally implement bulk transfer friendly methods. If this interface is implemented, then ETL code will use bulk transfers whan moving data.

Author:

mshankar

Method Summary

Modifier and Type	Method	Description
`ReadableByteChannel`	`getByteChannel(BasicContext context)`	Get a byte channel positioned at the first event (after the header).
`Event`	`getFirstEvent(BasicContext context)`	Get the first event in this event stream.

Methods inherited from interface java.io.Closeable
close

Methods inherited from interface org.epics.archiverappliance.EventStream
getDescription

Methods inherited from interface java.lang.Iterable
forEach, iterator, spliterator

- Method Detail
  - getFirstEvent
```
Event getFirstEvent(BasicContext context)
             throws IOException
```
    Get the first event in this event stream. If there are no events in this stream, return null.
    
    Parameters:
    
    context - BasicContext
    
    Returns:
    
    Event return the first event, or null
    
    Throws:
    
    IOException -
  - getByteChannel
```
ReadableByteChannel getByteChannel(BasicContext context)
                            throws IOException
```
    Get a byte channel positioned at the first event (after the header).
    
    Parameters:
    
    context - BasicContext
    
    Returns:
    
    ReadableByteChannel A channel that can read bytes.
    
    Throws:
    
    IOException -
    
    See Also:
    
    java.nio.channels.ReadableByteChannel