spring SQLExceptionTranslator 源码
spring SQLExceptionTranslator 代码
文件路径：/spring-jdbc/src/main/java/org/springframework/jdbc/support/SQLExceptionTranslator.java
/*
* Copyright 2002-2020 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.support;
import java.sql.SQLException;
import org.springframework.dao.DataAccessException;
import org.springframework.lang.Nullable;
/**
* Strategy interface for translating between {@link SQLException SQLExceptions}
* and Spring's data access strategy-agnostic {@link DataAccessException}
* hierarchy.
*
* <p>Implementations can be generic (for example, using
* {@link java.sql.SQLException#getSQLState() SQLState} codes for JDBC) or wholly
* proprietary (for example, using Oracle error codes) for greater precision.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @see org.springframework.dao.DataAccessException
*/
@FunctionalInterface
public interface SQLExceptionTranslator {
/**
* Translate the given {@link SQLException} into a generic {@link DataAccessException}.
* <p>The returned DataAccessException is supposed to contain the original
* {@code SQLException} as root cause. However, client code may not generally
* rely on this due to DataAccessExceptions possibly being caused by other resource
* APIs as well. That said, a {@code getRootCause() instanceof SQLException}
* check (and subsequent cast) is considered reliable when expecting JDBC-based
* access to have happened.
* @param task readable text describing the task being attempted
* @param sql the SQL query or update that caused the problem (if known)
* @param ex the offending {@code SQLException}
* @return the DataAccessException wrapping the {@code SQLException},
* or {@code null} if no specific translation could be applied
* @see org.springframework.dao.DataAccessException#getRootCause()
*/
@Nullable
DataAccessException translate(String task, @Nullable String sql, SQLException ex);
}
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