spring JdbcUpdateAffectedIncorrectNumberOfRowsException 源码
spring JdbcUpdateAffectedIncorrectNumberOfRowsException 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/JdbcUpdateAffectedIncorrectNumberOfRowsException.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;
import org.springframework.dao.IncorrectUpdateSemanticsDataAccessException;
/**
* Exception thrown when a JDBC update affects an unexpected number of rows.
* Typically we expect an update to affect a single row, meaning it's an
* error if it affects multiple rows.
*
* @author Rod Johnson
* @author Juergen Hoeller
*/
@SuppressWarnings("serial")
public class JdbcUpdateAffectedIncorrectNumberOfRowsException extends IncorrectUpdateSemanticsDataAccessException {
/** Number of rows that should have been affected. */
private final int expected;
/** Number of rows that actually were affected. */
private final int actual;
/**
* Constructor for JdbcUpdateAffectedIncorrectNumberOfRowsException.
* @param sql the SQL we were trying to execute
* @param expected the expected number of rows affected
* @param actual the actual number of rows affected
*/
public JdbcUpdateAffectedIncorrectNumberOfRowsException(String sql, int expected, int actual) {
super("SQL update '" + sql + "' affected " + actual + " rows, not " + expected + " as expected");
this.expected = expected;
this.actual = actual;
}
/**
* Return the number of rows that should have been affected.
*/
public int getExpectedRowsAffected() {
return this.expected;
}
/**
* Return the number of rows that have actually been affected.
*/
public int getActualRowsAffected() {
return this.actual;
}
@Override
public boolean wasDataUpdated() {
return (getActualRowsAffected() > 0);
}
}
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