com.moandjiezana.uncommons.dbutils

Interface RowProcessor<T>

Type Parameters:

T - the type a row is converted to

All Known Implementing Classes:

ColumnRowProcessor, MapRowProcessor, ObjectRowProcessor

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 RowProcessor<T>

Converts a ResultSet to an instance of T

Method Summary

Modifier and Type	Method and Description
static <T> RowProcessor<T>	firstColumn()
static <T> RowProcessor<T>	firstColumn(Class<T> objectClass)
T	handle(ResultSet resultSet)
static <T> RowProcessor<Optional<T>>	optional(RowProcessor<T> rowProcessor)

Method Detail

handle

T handle(ResultSet resultSet)
  throws Exception

Parameters:

resultSet - already pointing to the row to be processed

Returns:

an instance of T

Throws:

Exception - if something goes wrong

firstColumn

static <T> RowProcessor<T> firstColumn()

Type Parameters:

T - the type to convert the column to

Returns:

RowProcessor that gets the first column of the row

See Also:

ColumnRowProcessor

firstColumn

static <T> RowProcessor<T> firstColumn(Class<T> objectClass)

Type Parameters:

T - the type to convert the column to

Parameters:

objectClass - Specify the class when a conversion is necessary

Returns:

RowProcessor that gets the first column of the row

See Also:

ColumnRowProcessor

optional

static <T> RowProcessor<Optional<T>> optional(RowProcessor<T> rowProcessor)

Type Parameters:

T - the type a row is converted to

Parameters:

rowProcessor - performs the processing

Returns:

the result of processing, wrapped in an Optional