Package org.dalesbred.result

Interface RowMapper<T>

All Known Implementing Classes:

InstantiatorRowMapper

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 RowMapper<T>

Maps a single row of result-set into an object.

Method Summary

Modifier and Type	Method	Description
default @NotNull ResultSetProcessor<List<T>>	list()	Creates a ResultSetProcessor that applies this row-mapper to every row and results a list.
T	mapRow(@NotNull ResultSet resultSet)	Produces a single value based on current row.
default @NotNull ResultSetProcessor<Optional<T>>	optional()	Creates a ResultSetProcessor that no rows or single row from database.
default @NotNull ResultSetProcessor<T>	unique()	Creates a ResultSetProcessor that expects a single result row from database.

Method Details

mapRow

T mapRow(@NotNull
 @NotNull ResultSet resultSet)
  throws SQLException

Produces a single value based on current row.

The implementation should not call ResultSet.next() or other methods to move the current position of the ResultSet, caller is responsible for that.

Throws:

SQLException

list

@NotNull
default @NotNull ResultSetProcessor<List<T>> list()

Creates a ResultSetProcessor that applies this row-mapper to every row and results a list.

unique

@NotNull
default @NotNull ResultSetProcessor<T> unique()

Creates a ResultSetProcessor that expects a single result row from database.

optional

@NotNull
default @NotNull ResultSetProcessor<Optional<T>> optional()

Creates a ResultSetProcessor that no rows or single row from database.