/*
* Copyright 2002-2009 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.BeanPropertyRowMapper;
/**
* {@link 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.
*
* <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>.
*
* <p>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.
*
* <p>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, <code>java.util.Date</code>, etc.
*
* <p>The mapper can be configured to use the primitives default value when mapping null values
* by setting the {@link #setPrimitivesDefaultedForNullValue 'primitivesDefaultedForNullValue'}
* flag to 'true'.
*
* <p>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".
*
* <p>Please note that this class is designed to provide convenience rather than high performance.
* For best performance consider using a custom RowMapper.
*
* @author Thomas Risberg
* @author Juergen Hoeller
* @since 2.5
* @see ParameterizedRowMapper
*/
public class ParameterizedBeanPropertyRowMapper<T> extends BeanPropertyRowMapper<T>
implements ParameterizedRowMapper<T> {
/**
* Static factory method to create a new ParameterizedBeanPropertyRowMapper
* (with the mapped class specified only once).
* @param mappedClass the class that each row should be mapped to
*/
public static <T> ParameterizedBeanPropertyRowMapper<T> newInstance(Class<T> mappedClass) {
ParameterizedBeanPropertyRowMapper<T> newInstance = new ParameterizedBeanPropertyRowMapper<T>();
newInstance.setMappedClass(mappedClass);
return newInstance;
}
}
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