Source (Apache Calcite API)

All Superinterfaces:

java.lang.AutoCloseable

All Known Implementing Classes:

Interpreter.EnumeratorSource, Interpreter.ListSource
```
public interface Source
extends java.lang.AutoCloseable
```
Source of rows.
Corresponds to an input of a relational expression.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void close()
  
  Row receive()
  Reads a row.

- Method Detail
  - receive
```
Row receive()
```
    Reads a row. Null means end of data.
  - close
```
void close()
```
    Specified by:
    
    close in interface java.lang.AutoCloseable