/*
* Copyright 2002-2008 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.jdbc.core.simple;
import org.springframework.jdbc.core.SingleColumnRowMapper;
/**
* {@link ParameterizedRowMapper} implementation that converts a single column
* into a single result value per row. Expects to operate on a
* <code>java.sql.ResultSet</code> that just contains a single column.
*
* <p>The type of the result value for each row can be specified. The value
* for the single column will be extracted from the <code>ResultSet</code>
* and converted into the specified target type.
*
* <p>Uses Java 5 covariant return types to override the return type of the
* {@link #mapRow} method to be the type parameter <code>T</code>.
*
* @author Juergen Hoeller
* @since 2.5.2
*/
public class ParameterizedSingleColumnRowMapper<T> extends SingleColumnRowMapper<T>
implements ParameterizedRowMapper<T> {
/**
* Static factory method to create a new ParameterizedSingleColumnRowMapper
* (with the required type specified only once).
* @param requiredType the type that each result object is expected to match
*/
public static <T> ParameterizedSingleColumnRowMapper<T> newInstance(Class<T> requiredType) {
ParameterizedSingleColumnRowMapper<T> rm = new ParameterizedSingleColumnRowMapper<T>();
rm.setRequiredType(requiredType);
return rm;
}
}
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