RowAdapter (druid-processing 30.0.1 API)

All Known Implementing Classes:

ListBasedInputRowAdapter
```
public interface RowAdapter<RowType>
```
An adapter between arbitrary types and the needs of callers that want to read specific columns out of those types (treating them as rows).

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`Function<RowType,Object>`	`columnFunction(String columnName)`	Returns a function that retrieves the value for column "columnName" from rows.
`default ToLongFunction<RowType>`	`timestampFunction()`	Returns a function that retrieves timestamps from rows.

- Method Detail
  - timestampFunction
```
default ToLongFunction<RowType> timestampFunction()
```
    Returns a function that retrieves timestamps from rows. The default implementation delegates to columnFunction(java.lang.String) and expects it to already contain long-typed values or nulls. Nulls, if present, will be converted to zeroes.
  - columnFunction
```
Function<RowType,Object> columnFunction(String columnName)
```
    Returns a function that retrieves the value for column "columnName" from rows.