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## org.springframework.jdbc.core.simple
Class ParameterizedSingleColumnRowMapper<T>

    java.lang.Object
      org.springframework.jdbc.core.SingleColumnRowMapper<T>
          org.springframework.jdbc.core.simple.ParameterizedSingleColumnRowMapper<T>

All Implemented Interfaces:
  RowMapper<T>, ParameterizedRowMapper<T>

    public class ParameterizedSingleColumnRowMapper<T>

extends SingleColumnRowMapper<T>
implements ParameterizedRowMapper<T>

`ParameterizedRowMapper` implementation that converts a single column into a single result value per row. Expects to operate on a `java.sql.ResultSet` that just contains a single column.

The type of the result value for each row can be specified. The value for the single column will be extracted from the `ResultSet` and converted into the specified target type.

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

Since:
  2.5.2
Author:
  Juergen Hoeller

Constructor Summary
`ParameterizedSingleColumnRowMapper()`

Method Summary
`static
`<T> ParameterizedSingleColumnRowMapper<T>`
` | `newInstance(java.lang.Class<T> requiredType)` Static factory method to create a new ParameterizedSingleColumnRowMapper (with the required type specified only once).

Methods inherited from class org.springframework.jdbc.core.SingleColumnRowMapper
`convertValueToRequiredType, getColumnValue, getColumnValue, mapRow, setRequiredType`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.springframework.jdbc.core.RowMapper
`mapRow`

Constructor Detail

### ParameterizedSingleColumnRowMapper

    public ParameterizedSingleColumnRowMapper()

Method Detail

### newInstance

    public static <T> ParameterizedSingleColumnRowMapper<T> newInstance(java.lang.Class<T> requiredType)

  Static factory method to create a new ParameterizedSingleColumnRowMapper (with the required type specified only once).

  Parameters:
    `requiredType` - the type that each result object is expected to match

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