The Spring Framework

Class ParameterizedBeanPropertyRowMapper<T>

  extended by org.springframework.jdbc.core.BeanPropertyRowMapper
      extended by org.springframework.jdbc.core.simple.ParameterizedBeanPropertyRowMapper<T>
All Implemented Interfaces:
RowMapper, ParameterizedRowMapper<T>

public class ParameterizedBeanPropertyRowMapper<T>
extends BeanPropertyRowMapper
implements ParameterizedRowMapper<T>

ParameterizedRowMapper implementation that converts a row into a new instance of the specified mapped target class. The mapped target class must be a top-level class and it must have a default or no-arg constructor.

Uses Java 5 covariant return types to override the return type of the mapRow(java.sql.ResultSet, int) method to be the type parameter T.

Column values are mapped based on matching the column name as obtained from result set metadata to public setters for the corresponding properties. The names are matched either directly or by transforming a name separating the parts with underscores to the same name using "camel" case.

Mapping is provided for fields in the target class for many common types, e.g.: String, boolean, Boolean, byte, Byte, short, Short, int, Integer, long, Long, float, Float, double, Double, BigDecimal, java.util.Date, etc.

To facilitate mapping between columns and fields that don't have matching names, try using column aliases in the SQL statement like "select fname as first_name from customer".

Please note that this class is designed to provide convenience rather than high performance. For best performance consider using a custom RowMapper.

Thomas Risberg, Juergen Hoeller
See Also:

Field Summary
Fields inherited from class org.springframework.jdbc.core.BeanPropertyRowMapper
logger, mappedClass
Constructor Summary
          Create a new ParameterizedBeanPropertyRowMapper.
Method Summary
 T mapRow(ResultSet rs, int rowNumber)
          Extract the values for all columns in the current row.
<T> ParameterizedBeanPropertyRowMapper<T>
newInstance(Class<T> mappedClass)
          Static factory method to create a new ParameterizedBeanPropertyRowMapper (with the mapped class specified only once).
Methods inherited from class org.springframework.jdbc.core.BeanPropertyRowMapper
getColumnValue, getMappedClass, initBeanWrapper, initialize, setMappedClass
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail


public ParameterizedBeanPropertyRowMapper()
Create a new ParameterizedBeanPropertyRowMapper.

Generally prefer the newInstance(Class) method instead, which avoids the need for specifying the mapped type twice.

See Also:
Method Detail


public T mapRow(ResultSet rs,
                int rowNumber)
         throws SQLException
Description copied from class: BeanPropertyRowMapper
Extract the values for all columns in the current row.

Utilizes public setters and result set metadata.

Specified by:
mapRow in interface RowMapper
Specified by:
mapRow in interface ParameterizedRowMapper<T>
mapRow in class BeanPropertyRowMapper
rs - the ResultSet to map (pre-initialized for the current row)
rowNumber - the number of the current row
the result object for the current row
SQLException - if a SQLException is encountered getting column values (that is, there's no need to catch SQLException)
See Also:


public static <T> ParameterizedBeanPropertyRowMapper<T> newInstance(Class<T> mappedClass)
Static factory method to create a new ParameterizedBeanPropertyRowMapper (with the mapped class specified only once).

mappedClass - the class that each row should be mapped to

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