com.moandjiezana.uncommons.dbutils

Class ColumnRowProcessor<T>

java.lang.Object

com.moandjiezana.uncommons.dbutils.ColumnRowProcessor<T>

Type Parameters:

T - The type of the column. When no class is specified via the constructor, this must match or be a super-type of what is returned by the ResultSet.

All Implemented Interfaces:

RowProcessor<T>

public class ColumnRowProcessor<T>
extends Object
implements RowProcessor<T>

Converts the specified ResultSet column into an instance of T. This class is thread safe.

Constructor Summary

Constructors

Constructor and Description
ColumnRowProcessor(int columnIndex)
ColumnRowProcessor(int columnIndex, Class<T> objectClass)
ColumnRowProcessor(String columnName)
ColumnRowProcessor(String columnName, Class<T> objectClass)

Method Summary

Modifier and Type	Method and Description
T	handle(ResultSet rs)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.moandjiezana.uncommons.dbutils.RowProcessor

firstColumn, firstColumn, optional

Constructor Detail

ColumnRowProcessor

public ColumnRowProcessor(int columnIndex)

Parameters:

columnIndex - The index of the column to retrieve from the ResultSet.

ColumnRowProcessor

public ColumnRowProcessor(int columnIndex,
                          Class<T> objectClass)

Parameters:

columnIndex - The index of the column to retrieve from the ResultSet.

objectClass - The class of the returned instance. Makes custom conversion possible.

ColumnRowProcessor

public ColumnRowProcessor(String columnName)

Parameters:

columnName - The name of the column to retrieve from the ResultSet.

ColumnRowProcessor

public ColumnRowProcessor(String columnName,
                          Class<T> objectClass)

Parameters:

columnName - The name of the column to retrieve from the ResultSet.

objectClass - The class of the returned instance. Makes custom conversion possible.

Method Detail

handle

public T handle(ResultSet rs)
         throws SQLException

Specified by:

handle in interface RowProcessor<T>

Parameters:

rs - ResultSet to process.

Returns:

an instance of T, either by conversion if a class was specified or by casting.

Throws:

SQLException - if a database access error occurs

ClassCastException - if no class was specified and T does not match the column type