RowKey (druid-processing 28.0.1 API)

java.lang.Object
- org.apache.druid.frame.key.RowKey

```
public class RowKey
extends Object
```
Represents a specific sorting or hashing key. Instances of this class wrap a byte array in row-based frame format.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`byte[]`	`array()`	Get the backing array for this key (not a copy).
`static RowKey`	`empty()`
`boolean`	`equals(Object o)`
`int`	`estimatedObjectSizeBytes()`	Estimate number of bytes taken by the key array.
`int`	`hashCode()`
`long`	`longHashCode()`
`String`	`toString()`
`static RowKey`	`wrap(byte[] row)`	Create a key from a byte array.

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

- Method Detail
  - wrap
```
public static RowKey wrap(byte[] row)
```
    Create a key from a byte array. The array will be owned by the resulting key object.
  - empty
```
public static RowKey empty()
```
  - array
```
public byte[] array()
```
    Get the backing array for this key (not a copy).
  - longHashCode
```
public long longHashCode()
```
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - estimatedObjectSizeBytes
```
public int estimatedObjectSizeBytes()
```
    Estimate number of bytes taken by the key array. Only returns an estimate and does not account for platform or JVM specific implementation.