spring-data-redis ReferenceResolverImpl 源码
spring-data-redis ReferenceResolverImpl 代码
文件路径：/src/main/java/org/springframework/data/redis/core/convert/ReferenceResolverImpl.java
/*
* Copyright 2016-2022 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.convert;
import java.util.Map;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisKeyValueAdapter;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.core.convert.BinaryConverters.StringToBytesConverter;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* {@link ReferenceResolver} using {@link RedisKeyValueAdapter} to read raw data.
*
* @author Christoph Strobl
* @author Mark Paluch
* @since 1.7
*/
public class ReferenceResolverImpl implements ReferenceResolver {
private final RedisOperations<?, ?> redisOps;
private final StringToBytesConverter converter;
/**
* @param redisOperations must not be {@literal null}.
*/
public ReferenceResolverImpl(RedisOperations<?, ?> redisOperations) {
Assert.notNull(redisOperations, "RedisOperations must not be null");
this.redisOps = redisOperations;
this.converter = new StringToBytesConverter();
}
@Override
@Nullable
public Map<byte[], byte[]> resolveReference(Object id, String keyspace) {
byte[] key = converter.convert(keyspace + ":" + id);
return redisOps.execute((RedisCallback<Map<byte[], byte[]>>) connection -> connection.hGetAll(key));
}
}
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