com.github.marschall.storedprocedureproxy

Interface ValueExtractor<V>

Type Parameters:

V - the value 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 ValueExtractor<V>

Extracts a value from a single row.

This class is used to extract a value object from every row in a ref cursor out parameter.

This class is modeled after Springs RowMapper. If you're using lambdas the the code should directly port over. If not the easiest way to bridge the code is using an method reference.

Implementations should not catch SQLException this will be done by a higher layer.

See Also:

RowMapper

Method Summary

Modifier and Type	Method and Description
V	extractValue(ResultSet resultSet, int rowNumber) Extract the value from the current row.

Method Detail

extractValue

V extractValue(ResultSet resultSet,
               int rowNumber)
        throws SQLException

Extract the value from the current row.

Implementations should not call ResultSet.next() but instead expect to be called for every method.

Parameters:

resultSet - the ResultSet to the value of the current row from

rowNumber - the 0-based index of the current row, mostly for Spring compatibility

Returns:

the value for the current row

Throws:

SQLException - propagated with a method on ResultSet throws an exception

See Also:

RowMapper.mapRow(ResultSet, int)