Module org.itsallcode.jdbc

Package org.itsallcode.jdbc.resultset

Interface ContextRowMapper<T>

Type Parameters:

T - generic row type

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 ContextRowMapper<T>

Converts a single row from a ResultSet to a generic row type.

Method Summary

Modifier and Type	Method	Description
static RowMapper<List<Object>>	columnValueList(DbDialect dialect)	Create a RowMapper that creates Lists of simple column objects.
static <T> ContextRowMapper<T>	create(RowMapper<T> mapper)	Creates a new new ContextRowMapper from a RowMapper.
static <T> ContextRowMapper<T>	create(SimpleRowMapper<T> mapper)	Creates a new new ContextRowMapper from a SimpleRowMapper.
static RowMapper<Row>	generic(DbDialect dialect)	Create a RowMapper that creates generic Row objects.
T	mapRow(Context context, ResultSet resultSet, int rowNum)	Converts a single row from a ResultSet to a generic row type.

Method Details

mapRow

T mapRow(Context context,
 ResultSet resultSet,
 int rowNum)
  throws SQLException

Converts a single row from a ResultSet to a generic row type.

Parameters:

context - database context

resultSet - result set

rowNum - the current row number (zero based)

Returns:

the converted row

Throws:

SQLException - if accessing the result set fails

generic

static RowMapper<Row> generic(DbDialect dialect)

Create a RowMapper that creates generic Row objects.

Parameters:

dialect - DB dialect

Returns:

a new row mapper

columnValueList

static RowMapper<List<Object>> columnValueList(DbDialect dialect)

Create a RowMapper that creates Lists of simple column objects.

Parameters:

dialect - DB dialect

Returns:

a new row mapper

create

static <T> ContextRowMapper<T> create(SimpleRowMapper<T> mapper)

Creates a new new ContextRowMapper from a SimpleRowMapper.

Use this if the mapper doesn't need the Context.

Type Parameters:

T - generic row type

Parameters:

mapper - the simple row mapper

Returns:

a new ContextRowMapper

create

static <T> ContextRowMapper<T> create(RowMapper<T> mapper)

Creates a new new ContextRowMapper from a RowMapper.

Use this if the mapper doesn't need the Context.

Type Parameters:

T - generic row type

Parameters:

mapper - the simple row mapper

Returns:

a new ContextRowMapper