Equality (druid-processing 28.0.1 API)

java.lang.Object
- org.apache.druid.segment.join.Equality

```
public class Equality
extends Object
```
Represents a join condition between a left-hand-side expression (leftExpr) and a right-hand-side direct column access (rightColumn). This is a particularly interesting kind of condition because it can be resolved using a hashtable on the right-hand side. Note that this class does not override "equals" or "hashCode". This is because Expr also does not.

Constructor Summary

Constructors
Constructor Description

Equality(Expr leftExpr, String rightColumn, boolean includeNull)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Expr`	`getLeftExpr()`
`String`	`getRightColumn()`
`boolean`	`isIncludeNull()`	Whether null is treated as a value that can be equal to itself.
`String`	`toString()`

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

- Constructor Detail
  - Equality
```
public Equality(Expr leftExpr,
                String rightColumn,
                boolean includeNull)
```
- Method Detail
  - getLeftExpr
```
public Expr getLeftExpr()
```
  - getRightColumn
```
public String getRightColumn()
```
  - isIncludeNull
```
public boolean isIncludeNull()
```
    Whether null is treated as a value that can be equal to itself. True for conditions using "IS NOT DISTINCT FROM", false for conditions using regular equals.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object