ResultSetExtractor (aSQL-common 1.0.2 API)

Type Parameters:

T - the result type

All Known Implementing Classes:

DefaultExtractor

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface ResultSetExtractor<T>
```
Represents a callback interface used by DataTemplate's query methods.
Implementations of this interface extract results from a ResultSet and they don't need to worry about handling exceptions: they will be handled by aSQL DataTemplate and passed to a CompletableFuture for further analysis by the user.

This interface is internally used by DataTemplate and, like RowMapper, it's reusable. A default implementation called DefaultExtractor is already provided.

See Also:

DefaultExtractor

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`T`	`extractData(ResultSet rs)`	Implementations of this method must provide the processing logic (data extraction) of the entire ResultSet.

- Method Detail
  - extractData
```
@Nullable
T extractData(@NotNull
              ResultSet rs)
       throws SQLException
```
    Implementations of this method must provide the processing logic (data extraction) of the entire ResultSet.
    
    Parameters:
    
    rs - the ResultSet to extract data from. Implementations don't need to close this: it will be closed by DataTemplate
    
    Returns:
    
    an object result or null if it's not available
    
    Throws:
    
    SQLException - if an SQLException is encountered while trying to navigate the ResultSet