SelectionPredicate (druid-processing 30.0.1 API)

```
public interface SelectionPredicate
```
Differentiating factor between the first and the last aggregator. Specifies the

- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  static SelectionPredicate FIRST_PREDICATE
  
  static SelectionPredicate LAST_PREDICATE
- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  boolean apply(long currentTime, long selectedTime)
  
  long initValue()

- Field Detail
  - FIRST_PREDICATE
```
static final SelectionPredicate FIRST_PREDICATE
```
  - LAST_PREDICATE
```
static final SelectionPredicate LAST_PREDICATE
```
- Method Detail
  - initValue
```
long initValue()
```
    Returns:
    
    Time value to initialize the aggregation with
  - apply
```
boolean apply(long currentTime,
              long selectedTime)
```
    Parameters:
    
    currentTime - Time of the current row
    
    selectedTime - Aggregated time value
    
    Returns:
    
    true if the current row should be selected over the aggregated value, else false