Package org.jdbi.v3.core.mapper

Class SingleColumnMapper<T>

java.lang.Object

org.jdbi.v3.core.mapper.SingleColumnMapper<T>

All Implemented Interfaces:

RowMapper<T>

public class SingleColumnMapper<T>
extends java.lang.Object
implements RowMapper<T>

Adapts a ColumnMapper into a RowMapper by mapping a single column.

Field Summary

Fields

Modifier and Type	Field	Description
private RowMapper<T>	delegate

Constructor Summary

Constructors

Constructor	Description
SingleColumnMapper(ColumnMapper<T> mapper)	Constructs a row mapper which maps the first column.
SingleColumnMapper(ColumnMapper<T> mapper, int columnNumber)	Constructs a row mapper which maps the given column number.
SingleColumnMapper(ColumnMapper<T> mapper, java.lang.String columnLabel)	Constructs a row mapper which maps the column with the given label.

Method Summary

Modifier and Type	Method	Description
T	map(java.sql.ResultSet r, StatementContext ctx)	Map the current row of the result set.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jdbi.v3.core.mapper.RowMapper

init, specialize

Field Detail

delegate

private final RowMapper<T> delegate

Constructor Detail

SingleColumnMapper

public SingleColumnMapper(ColumnMapper<T> mapper)

Constructs a row mapper which maps the first column.

Parameters:

mapper - the column mapper to delegate to for mapping.

SingleColumnMapper

public SingleColumnMapper(ColumnMapper<T> mapper,
                          int columnNumber)

Constructs a row mapper which maps the given column number.

Parameters:

mapper - the column mapper to delegate to for mapping

columnNumber - the column number (1-based) to map

SingleColumnMapper

public SingleColumnMapper(ColumnMapper<T> mapper,
                          java.lang.String columnLabel)

Constructs a row mapper which maps the column with the given label.

Parameters:

mapper - the column mapper to delegate to for mapping

columnLabel - the label of the column to map

Method Detail

map

public T map(java.sql.ResultSet r,
             StatementContext ctx)
      throws java.sql.SQLException

Description copied from interface: RowMapper

Map the current row of the result set. This method should not cause the result set to advance; allow Jdbi to do that, please.

Specified by:

map in interface RowMapper<T>

Parameters:

r - the result set being iterated

ctx - the statement context

Returns:

the value to produce for this row

Throws:

java.sql.SQLException - if anything goes wrong go ahead and let this percolate; Jdbi will handle it