spring-data-redis RedisCallback 源码
spring-data-redis RedisCallback 代码
文件路径：/src/main/java/org/springframework/data/redis/core/RedisCallback.java
/*
* Copyright 2011-2022 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.data.redis.core;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.lang.Nullable;
/**
* Callback interface for Redis 'low level' code. To be used with {@link RedisTemplate} execution methods, often as
* anonymous classes within a method implementation. Usually, used for chaining several operations together (
* {@code get/set/trim etc...}.
*
* @author Costin Leau
*/
public interface RedisCallback<T> {
/**
* Gets called by {@link RedisTemplate} with an active Redis connection. Does not need to care about activating or
* closing the connection or handling exceptions.
*
* @param connection active Redis connection
* @return a result object or {@code null} if none
* @throws DataAccessException
*/
@Nullable
T doInRedis(RedisConnection connection) throws DataAccessException;
}
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