Prefetcher

java.lang.Object
- com.github.mizosoft.methanol.internal.flow.Prefetcher

```
public final class Prefetcher
extends java.lang.Object
```
An object that manages requests to an upstream subscription according to a prefetching policy. Callers call initialize(Upstream) when they first receive the subscription and update(Upstream) when a received item is consumed. The prefetching policy ensures that the number of requested but not fulfilled items remains between two values, namely prefetchThreshold and prefetch.
This class is not thread-safe. Caller must ensure that initialize(Upstream) & update(Upstream) are not interleaved and are properly synchronized.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Prefetcher()
  
  Prefetcher(int prefetch, int prefetchThreshold)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  void initialize(Upstream upstream)
  
  void update(Upstream upstream)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Prefetcher
```
public Prefetcher()
```

Prefetcher

public Prefetcher(int prefetch,
                  int prefetchThreshold)

Method Detail

initialize

public void initialize(Upstream upstream)

update

public void update(Upstream upstream)