spring RowMapper 源码

  • 2022-08-08
  • 浏览 (124)

spring RowMapper 代码


 * Copyright 2002-2018 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
 *      https://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,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.springframework.jdbc.core;

import java.sql.ResultSet;
import java.sql.SQLException;

import org.springframework.lang.Nullable;

 * An interface used by {@link JdbcTemplate} for mapping rows of a
 * {@link java.sql.ResultSet} on a per-row basis. Implementations of this
 * interface perform the actual work of mapping each row to a result object,
 * but don't need to worry about exception handling.
 * {@link java.sql.SQLException SQLExceptions} will be caught and handled
 * by the calling JdbcTemplate.
 * <p>Typically used either for {@link JdbcTemplate}'s query methods
 * or for out parameters of stored procedures. RowMapper objects are
 * typically stateless and thus reusable; they are an ideal choice for
 * implementing row-mapping logic in a single place.
 * <p>Alternatively, consider subclassing
 * {@link org.springframework.jdbc.object.MappingSqlQuery} from the
 * {@code jdbc.object} package: Instead of working with separate
 * JdbcTemplate and RowMapper objects, you can build executable query
 * objects (containing row-mapping logic) in that style.
 * @author Thomas Risberg
 * @author Juergen Hoeller
 * @param <T> the result type
 * @see JdbcTemplate
 * @see RowCallbackHandler
 * @see ResultSetExtractor
 * @see org.springframework.jdbc.object.MappingSqlQuery
public interface RowMapper<T> {

	 * Implementations must implement this method to map each row of data
	 * in the ResultSet. This method should not call {@code next()} on
	 * the ResultSet; it is only supposed to map values of the current row.
	 * @param rs the ResultSet to map (pre-initialized for the current row)
	 * @param rowNum the number of the current row
	 * @return the result object for the current row (may be {@code null})
	 * @throws SQLException if an SQLException is encountered getting
	 * column values (that is, there's no need to catch SQLException)
	T mapRow(ResultSet rs, int rowNum) throws SQLException;



spring 源码目录


spring ArgumentPreparedStatementSetter 源码

spring ArgumentTypePreparedStatementSetter 源码

spring BatchPreparedStatementSetter 源码

spring BeanPropertyRowMapper 源码

spring CallableStatementCallback 源码

spring CallableStatementCreator 源码

spring CallableStatementCreatorFactory 源码

spring ColumnMapRowMapper 源码

spring ConnectionCallback 源码

spring DataClassRowMapper 源码

0  赞