spring PreparedStatementCreator 源码
spring PreparedStatementCreator 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/core/PreparedStatementCreator.java
/*
* 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,
* 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;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
/**
* One of the two central callback interfaces used by the JdbcTemplate class.
* This interface creates a PreparedStatement given a connection, provided
* by the JdbcTemplate class. Implementations are responsible for providing
* SQL and any necessary parameters.
*
* <p>Implementations <i>do not</i> need to concern themselves with
* SQLExceptions that may be thrown from operations they attempt.
* The JdbcTemplate class will catch and handle SQLExceptions appropriately.
*
* <p>A PreparedStatementCreator should also implement the SqlProvider interface
* if it is able to provide the SQL it uses for PreparedStatement creation.
* This allows for better contextual information in case of exceptions.
*
* @author Rod Johnson
* @see JdbcTemplate#execute(PreparedStatementCreator, PreparedStatementCallback)
* @see JdbcTemplate#query(PreparedStatementCreator, RowCallbackHandler)
* @see JdbcTemplate#update(PreparedStatementCreator)
* @see SqlProvider
*/
@FunctionalInterface
public interface PreparedStatementCreator {
/**
* Create a statement in this connection. Allows implementations to use
* PreparedStatements. The JdbcTemplate will close the created statement.
* @param con the connection used to create statement
* @return a prepared statement
* @throws SQLException there is no need to catch SQLExceptions
* that may be thrown in the implementation of this method.
* The JdbcTemplate class will handle them.
*/
PreparedStatement createPreparedStatement(Connection con) throws SQLException;
}
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