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/*
 * Copyright 2002-2006 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.dao;

import org.springframework.core.NestedRuntimeException;

/**
 * Root of the hierarchy of data access exceptions discussed in
 * Expert One-On-One J2EE Design and Development.
 * Please see Chapter 9 of this book for detailed discussion of the
 * motivation for this package.
 *
 * 

This exception hierarchy aims to let user code find and handle the * kind of error encountered without knowing the details of the particular * data access API in use (e.g. JDBC). Thus it is possible to react to an * optimistic locking failure without knowing that JDBC is being used. * *

As this class is a runtime exception, there is no need for user code * to catch it or subclasses if any error is to be considered fatal * (the usual case). * * @author Rod Johnson */ public abstract class DataAccessException extends NestedRuntimeException { /** * Constructor for DataAccessException. * @param msg the detail message */ public DataAccessException(String msg) { super(msg); } /** * Constructor for DataAccessException. * @param msg the detail message * @param cause the root cause (usually from using a underlying * data access API such as JDBC) */ public DataAccessException(String msg, Throwable cause) { super(msg, cause); } }





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