Java tutorial
/* * 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.CallableStatement; import java.sql.Connection; import java.sql.SQLException; /** * One of the three central callback interfaces used by the JdbcTemplate class. * This interface creates a CallableStatement 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 * @author Thomas Risberg * @see JdbcTemplate#execute(CallableStatementCreator, CallableStatementCallback) * @see JdbcTemplate#call * @see SqlProvider */ @FunctionalInterface public interface CallableStatementCreator { /** * Create a callable statement in this connection. Allows implementations to use * CallableStatements. * @param con the Connection to use to create statement * @return a callable 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. */ CallableStatement createCallableStatement(Connection con) throws SQLException; }