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Spring Framework example source code file (CallableStatementCallback.java)

This example Spring Framework source code file (CallableStatementCallback.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

callablestatementcallback, callablestatementcallback, dataaccessexception, dataaccessexception, jdbc, object, object, sql, sqlexception, sqlexception

The Spring Framework CallableStatementCallback.java source code

/*
 * Copyright 2002-2005 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;

import java.sql.CallableStatement;
import java.sql.SQLException;

import org.springframework.dao.DataAccessException;

/**
 * Generic callback interface for code that operates on a CallableStatement.
 * Allows to execute any number of operations on a single CallableStatement,
 * for example a single execute call or repeated execute calls with varying
 * parameters.
 *
 * <p>Used internally by JdbcTemplate, but also useful for application code.
 * Note that the passed-in CallableStatement can have been created by the
 * framework or by a custom CallableStatementCreator. However, the latter is
 * hardly ever necessary, as most custom callback actions will perform updates
 * in which case a standard CallableStatement is fine. Custom actions will
 * always set parameter values themselves, so that CallableStatementCreator
 * capability is not needed either.
 *
 * @author Juergen Hoeller
 * @since 16.03.2004
 * @see JdbcTemplate#execute(String, CallableStatementCallback)
 * @see JdbcTemplate#execute(CallableStatementCreator, CallableStatementCallback)
 */
public interface CallableStatementCallback {

	/**
	 * Gets called by <code>JdbcTemplate.execute with an active JDBC
	 * CallableStatement. Does not need to care about closing the Statement
	 * or the Connection, or about handling transactions: this will all be
	 * handled by Spring's JdbcTemplate.
	 *
	 * <p>NOTE: Any ResultSets opened should be closed in finally blocks
	 * within the callback implementation. Spring will close the Statement
	 * object after the callback returned, but this does not necessarily imply
	 * that the ResultSet resources will be closed: the Statement objects might
	 * get pooled by the connection pool, with <code>close calls only
	 * returning the object to the pool but not physically closing the resources.
	 *
	 * <p>If called without a thread-bound JDBC transaction (initiated by
	 * DataSourceTransactionManager), the code will simply get executed on the
	 * JDBC connection with its transactional semantics. If JdbcTemplate is
	 * configured to use a JTA-aware DataSource, the JDBC connection and thus
	 * the callback code will be transactional if a JTA transaction is active.
	 *
	 * <p>Allows for returning a result object created within the callback, i.e.
	 * a domain object or a collection of domain objects. A thrown RuntimeException
	 * is treated as application exception: it gets propagated to the caller of
	 * the template.
	 *
	 * @param cs active JDBC CallableStatement
	 * @return a result object, or <code>null if none
	 * @throws SQLException if thrown by a JDBC method, to be auto-converted
	 * into a DataAccessException by a SQLExceptionTranslator
	 * @throws DataAccessException in case of custom exceptions
	 */
	Object doInCallableStatement(CallableStatement cs) throws SQLException, DataAccessException;

}

Other Spring Framework examples (source code examples)

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