YieldingAccumulator (druid-processing 28.0.1 API)

java.lang.Object
- org.apache.druid.java.util.common.guava.YieldingAccumulator<AccumulatedType,InType>

Direct Known Subclasses:

DelegatingYieldingAccumulator, FilteringYieldingAccumulator, MappingYieldingAccumulator
```
public abstract class YieldingAccumulator<AccumulatedType,InType>
extends Object
```
A YieldingAccumulator is used along with a Yielder in order to replicate continuations in Java. I'm still not sure this is such a great idea, but it's there. We shall see. The accumulated has its accumulate() method called and has the option of "yielding" its response by calling yield() before returning as response. If it chooses not to yield its response, then it expects to get called again with the next value and the value it just returned.

Constructor Summary

Constructors
Constructor Description

YieldingAccumulator()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract AccumulatedType`	`accumulate(AccumulatedType accumulated, InType in)`
`void`	`reset()`
`void`	`yield()`
`boolean`	`yielded()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- YieldingAccumulator
```
public YieldingAccumulator()
```

Method Detail

yield
```
public void yield()
```

yielded
```
public boolean yielded()
```

reset
```
public void reset()
```

accumulate

public abstract AccumulatedType accumulate(AccumulatedType accumulated,
                                           InType in)