PrefetchableIterator (fn-execution 2.44.0 API)

All Superinterfaces:

java.util.Iterator<T>

All Known Implementing Classes:

DataStreams.DataStreamDecoder
```
public interface PrefetchableIterator<T>
extends java.util.Iterator<T>
```
Iterator that supports prefetching the next set of records.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`isReady()`	Returns `true` if and only if `Iterator.hasNext()` and `Iterator.next()` will not require an expensive operation.
`void`	`prefetch()`	If not `isReady()`, schedules the next expensive operation such that at some point in time in the future `isReady()` will return true.

Methods inherited from interface java.util.Iterator
forEachRemaining, hasNext, next, remove

- Method Detail
  - isReady
```
boolean isReady()
```
    Returns true if and only if Iterator.hasNext() and Iterator.next() will not require an expensive operation.
  - prefetch
```
void prefetch()
```
    If not isReady(), schedules the next expensive operation such that at some point in time in the future isReady() will return true.