/*
* 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
* <a href="http://www.amazon.com/exec/obidos/tg/detail/-/0764543857/">Expert One-On-One J2EE Design and Development</a>.
* Please see Chapter 9 of this book for detailed discussion of the
* motivation for this package.
*
* <p>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.
*
* <p>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);
}
}