spring-data-redis QueryUtils 源码
spring-data-redis QueryUtils 代码
文件路径：/src/main/java/org/springframework/data/redis/core/query/QueryUtils.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.query;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.springframework.data.redis.connection.DefaultSortParameters;
import org.springframework.data.redis.connection.SortParameters;
import org.springframework.data.redis.serializer.RedisSerializer;
/**
* Utilities for {@link SortQuery} implementations.
*
* @author Costin Leau
*/
public abstract class QueryUtils {
public static <K> SortParameters convertQuery(SortQuery<K> query, RedisSerializer<String> stringSerializer) {
return new DefaultSortParameters(stringSerializer.serialize(query.getBy()), query.getLimit(), serialize(
query.getGetPattern(), stringSerializer), query.getOrder(), query.isAlphabetic());
}
private static byte[][] serialize(List<String> strings, RedisSerializer<String> stringSerializer) {
List<byte[]> raw = null;
if (strings == null) {
raw = Collections.emptyList();
} else {
raw = new ArrayList<>(strings.size());
for (String key : strings) {
raw.add(stringSerializer.serialize(key));
}
}
return raw.toArray(new byte[raw.size()][]);
}
}
相关信息
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spring-data-redis DefaultSortCriterion 源码
spring-data-redis DefaultSortQuery 源码
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spring-data-redis SortQuery 源码
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