spring-data-redis DefaultRedisElementWriter 源码
spring-data-redis DefaultRedisElementWriter 代码
文件路径：/src/main/java/org/springframework/data/redis/serializer/DefaultRedisElementWriter.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;
/**
* Default implementation of {@link RedisElementWriter}.
*
* @author Mark Paluch
* @author Christoph Strobl
* @since 2.0
*/
class DefaultRedisElementWriter<T> implements RedisElementWriter<T> {
private final @Nullable RedisSerializer<T> serializer;
DefaultRedisElementWriter(RedisSerializer<T> serializer) {
this.serializer = serializer;
}
@Override
public ByteBuffer write(T value) {
if (serializer != null && (value == null || serializer.canSerialize(value.getClass()))) {
return ByteBuffer.wrap(serializer.serialize(value));
}
if (value instanceof byte[]) {
return ByteBuffer.wrap((byte[]) value);
}
if (value instanceof ByteBuffer) {
return (ByteBuffer) value;
}
throw new IllegalStateException(
String.format("Cannot serialize value of type %s without a serializer", value.getClass()));
}
}
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