Cursor (Vert.x Stack - Docs 5.0.0.CR3 API)

```
public interface Cursor
```
A cursor that reads progressively rows from the database, it is useful for reading very large result sets.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Future<Void>`	`close()`	Release the cursor.
`boolean`	`hasMore()`	Returns `true` when the cursor has results in progress and the `read(int)` should be called to retrieve them.
`boolean`	`isClosed()`
`Future<RowSet<Row>>`	`read(int count)`	Read rows from the cursor, the result is provided asynchronously to the `handler`.

- Method Detail
  - read
```
Future<RowSet<Row>> read(int count)
```
    Read rows from the cursor, the result is provided asynchronously to the handler.
    
    Parameters:
    
    count - the amount of rows to read
    
    Returns:
    
    a future notified with the result
  - hasMore
```
boolean hasMore()
```
    Returns true when the cursor has results in progress and the read(int) should be called to retrieve them.
    
    Returns:
    
    whether the cursor has more results,
  - close
```
Future<Void> close()
```
    Release the cursor.
    It should be called for prepared queries executed with a fetch size.
  - isClosed
```
boolean isClosed()
```
    Returns:
    
    whether the cursor is closed