DruidSqlOperatorConverter (Apache Calcite API)

All Known Implementing Classes:

BinaryOperatorConversion, CeilOperatorConversion, DirectOperatorConversion, DruidSqlCastConverter, ExtractOperatorConversion, FloorOperatorConversion, NaryOperatorConverter, SubstringOperatorConversion, UnaryPrefixOperatorConversion, UnarySuffixOperatorConversion
```
public interface DruidSqlOperatorConverter
```
Defines how to convert RexNode with a given calcite SQL operator to Druid expressions

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`SqlOperator`	`calciteOperator()`	Returns the calcite SQL operator corresponding to Druid operator.
`java.lang.String`	`toDruidExpression(RexNode rexNode, RelDataType rowType, DruidQuery druidQuery)`	Translate rexNode to valid Druid expression.

- Method Detail
  - calciteOperator
```
SqlOperator calciteOperator()
```
    Returns the calcite SQL operator corresponding to Druid operator.
    
    Returns:
    
    operator
  - toDruidExpression
```
@Nullable
java.lang.String toDruidExpression(RexNode rexNode,
                                   RelDataType rowType,
                                   DruidQuery druidQuery)
```
    Translate rexNode to valid Druid expression.
    
    Parameters:
    
    rexNode - rexNode to translate to Druid expression
    
    rowType - row type associated with rexNode
    
    druidQuery - druid query used to figure out configs/fields related like timeZone
    
    Returns:
    
    valid Druid expression or null if it can not convert the rexNode