ProfilerImpl.HllCompositeCollector (Apache Calcite API)

java.lang.Object
- org.apache.calcite.profile.ProfilerImpl.Collector
- - org.apache.calcite.profile.ProfilerImpl.HllCollector
  - - org.apache.calcite.profile.ProfilerImpl.HllCompositeCollector

Enclosing class:

ProfilerImpl
```
static class ProfilerImpl.HllCompositeCollector
extends ProfilerImpl.HllCollector
```
Collector that collects two or more column values into a HyperLogLog sketch.

- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  private java.nio.ByteBuffer buf
  
  private int[] columnOrdinals
  - Fields inherited from class org.apache.calcite.profile.ProfilerImpl.HllCollector
    NULL_BITS, nullCount, sketch
  - Fields inherited from class org.apache.calcite.profile.ProfilerImpl.Collector
    space
- Constructor Summary
  
  Constructors
  Constructor Description
  
  HllCompositeCollector(ProfilerImpl.Space space, int[] columnOrdinals)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  void add(java.util.List<java.lang.Comparable> row)
  - Methods inherited from class org.apache.calcite.profile.ProfilerImpl.HllCollector
    add, finish
  - Methods inherited from class org.apache.calcite.profile.ProfilerImpl.Collector
    create
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

columnOrdinals
```
private final int[] columnOrdinals
```

buf
```
private final java.nio.ByteBuffer buf
```

Constructor Detail

HllCompositeCollector

HllCompositeCollector(ProfilerImpl.Space space,
                      int[] columnOrdinals)

Method Detail

add

public void add(java.util.List<java.lang.Comparable> row)

Specified by:: add in class ProfilerImpl.Collector