spring-data-redis RedisElementReader 源码
spring-data-redis RedisElementReader 代码
文件路径：/src/main/java/org/springframework/data/redis/serializer/RedisElementReader.java
/*
* Copyright 2017-2022 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.serializer;
import java.nio.ByteBuffer;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Strategy interface that specifies a deserializer that can deserialize a binary element representation stored in Redis
* into an object.
*
* @author Mark Paluch
* @author Christoph Strobl
* @since 2.0
*/
@FunctionalInterface
public interface RedisElementReader<T> {
/**
* Deserialize a {@link ByteBuffer} into the according type.
*
* @param buffer must not be {@literal null}.
* @return the deserialized value. Can be {@literal null}.
*/
@Nullable
T read(ByteBuffer buffer);
/**
* Create new {@link RedisElementReader} using given {@link RedisSerializer}.
*
* @param serializer must not be {@literal null}.
* @return new instance of {@link RedisElementReader}.
*/
static <T> RedisElementReader<T> from(RedisSerializer<T> serializer) {
Assert.notNull(serializer, "Serializer must not be null");
return new DefaultRedisElementReader<>(serializer);
}
}
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