spring-data-redis LettuceReactiveZSetCommands 源码

spring-data-redis LettuceReactiveZSetCommands 代码

文件路径：/src/main/java/org/springframework/data/redis/connection/lettuce/LettuceReactiveZSetCommands.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.connection.lettuce;

import io.lettuce.core.Range;
import io.lettuce.core.ScanStream;
import io.lettuce.core.ScoredValue;
import io.lettuce.core.Value;
import io.lettuce.core.ZAddArgs;
import io.lettuce.core.ZStoreArgs;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;

import java.nio.ByteBuffer;
import java.util.List;
import java.util.concurrent.TimeUnit;

import org.reactivestreams.Publisher;

import org.springframework.data.domain.Sort.Direction;
import org.springframework.data.redis.connection.ReactiveRedisConnection.CommandResponse;
import org.springframework.data.redis.connection.ReactiveRedisConnection.KeyCommand;
import org.springframework.data.redis.connection.ReactiveRedisConnection.KeyScanCommand;
import org.springframework.data.redis.connection.ReactiveRedisConnection.MultiValueResponse;
import org.springframework.data.redis.connection.ReactiveRedisConnection.NumericResponse;
import org.springframework.data.redis.connection.ReactiveZSetCommands;
import org.springframework.data.redis.connection.zset.Aggregate;
import org.springframework.data.redis.connection.zset.DefaultTuple;
import org.springframework.data.redis.connection.zset.Tuple;
import org.springframework.data.redis.core.TimeoutUtils;
import org.springframework.data.redis.util.ByteUtils;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;

/**
 * @author Christoph Strobl
 * @author Mark Paluch
 * @author Michele Mancioppi
 * @author Andrey Shlykov
 * @since 2.0
 */
class LettuceReactiveZSetCommands implements ReactiveZSetCommands {

	private final LettuceReactiveRedisConnection connection;

	/**
	 * Create new {@link LettuceReactiveZSetCommands}.
	 *
	 * @param connection must not be {@literal null}.
	 */
	LettuceReactiveZSetCommands(LettuceReactiveRedisConnection connection) {

		Assert.notNull(connection, "Connection must not be null");

		this.connection = connection;
	}

	@Override
	@SuppressWarnings("unchecked")
	public Flux<NumericResponse<ZAddCommand, Number>> zAdd(Publisher<ZAddCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notEmpty(command.getTuples(), "Tuples must not be empty or null");

			ZAddArgs args = null;

			if (command.isIncr() || command.isUpsert() || command.isReturnTotalChanged()) {

				if (command.isIncr()) {

					if (command.getTuples().size() > 1) {
						throw new IllegalArgumentException("ZADD INCR must not contain more than one tuple");
					}

					Tuple tuple = command.getTuples().iterator().next();

					return cmd.zaddincr(command.getKey(), tuple.getScore(), ByteBuffer.wrap(tuple.getValue()))
							.map(value -> new NumericResponse<>(command, value));
				}

				if (command.isReturnTotalChanged()) {
					args = ZAddArgs.Builder.ch();
				}

				if (command.isUpsert()) {
					args = args == null ? ZAddArgs.Builder.nx() : args.nx();
				} else {
					args = args == null ? ZAddArgs.Builder.xx() : args.xx();
				}

				if (command.isGt()) {
					args = args == null ? ZAddArgs.Builder.gt() : args.gt();
				}
				if (command.isLt()) {
					args = args == null ? ZAddArgs.Builder.lt() : args.lt();
				}
			}

			ScoredValue<ByteBuffer>[] values = (ScoredValue<ByteBuffer>[]) command.getTuples().stream()
					.map(tuple -> ScoredValue.fromNullable(tuple.getScore(), ByteBuffer.wrap(tuple.getValue())))
					.toArray(ScoredValue[]::new);

			Mono<Long> result = args == null ? cmd.zadd(command.getKey(), values) : cmd.zadd(command.getKey(), args, values);

			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<NumericResponse<ZRemCommand, Long>> zRem(Publisher<ZRemCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notEmpty(command.getValues(), "Values must not be null or empty");

			return cmd.zrem(command.getKey(), command.getValues().stream().toArray(ByteBuffer[]::new))
					.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<NumericResponse<ZIncrByCommand, Double>> zIncrBy(Publisher<ZIncrByCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getValue(), "Member must not be null");
			Assert.notNull(command.getIncrement(), "Increment value must not be null");

			return cmd.zincrby(command.getKey(), command.getIncrement().doubleValue(), command.getValue())
					.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<CommandResponse<ZRandMemberCommand, Flux<ByteBuffer>>> zRandMember(
			Publisher<ZRandMemberCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");

			return new CommandResponse<>(command, cmd.zrandmember(command.getKey(), command.getCount()));
		}));
	}

	@Override
	public Flux<CommandResponse<ZRandMemberCommand, Flux<Tuple>>> zRandMemberWithScore(
			Publisher<ZRandMemberCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");

			return new CommandResponse<>(command, cmd.zrandmemberWithScores(command.getKey(), command.getCount())
					.map(this::toTuple));
		}));
	}

	@Override
	public Flux<NumericResponse<ZRankCommand, Long>> zRank(Publisher<ZRankCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getValue(), "Value must not be null");

			Mono<Long> result = ObjectUtils.nullSafeEquals(command.getDirection(), Direction.ASC)
					? cmd.zrank(command.getKey(), command.getValue())
					: cmd.zrevrank(command.getKey(), command.getValue());

			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<CommandResponse<ZRangeCommand, Flux<Tuple>>> zRange(Publisher<ZRangeCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getRange(), "Range must not be null");

			Flux<Tuple> result;

			long start = LettuceConverters.getLowerBoundIndex(command.getRange());
			long stop = LettuceConverters.getUpperBoundIndex(command.getRange());

			if (ObjectUtils.nullSafeEquals(command.getDirection(), Direction.ASC)) {
				if (command.isWithScores()) {

					result = cmd.zrangeWithScores(command.getKey(), start, stop).map(this::toTuple);
				} else {

					result = cmd.zrange(command.getKey(), start, stop).map(value -> toTuple(value, Double.NaN));
				}
			} else {
				if (command.isWithScores()) {

					result = cmd.zrevrangeWithScores(command.getKey(), start, stop).map(this::toTuple);
				} else {

					result = cmd.zrevrange(command.getKey(), start, stop).map(value -> toTuple(value, Double.NaN));
				}
			}

			return Mono.just(new CommandResponse<>(command, result));
		}));
	}

	@Override
	public Flux<CommandResponse<ZRangeByScoreCommand, Flux<Tuple>>> zRangeByScore(
			Publisher<ZRangeByScoreCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getRange(), "Range must not be null");

			boolean isLimited = command.getLimit().isPresent() && !command.getLimit().get().isUnlimited();

			Publisher<Tuple> result;

			if (ObjectUtils.nullSafeEquals(command.getDirection(), Direction.ASC)) {

				Range<Number> range = RangeConverter.toRange(command.getRange());

				if (command.isWithScores()) {

					if (!isLimited) {
						result = cmd.zrangebyscoreWithScores(command.getKey(), range).map(this::toTuple);
					} else {
						result = cmd
								.zrangebyscoreWithScores(command.getKey(), range, LettuceConverters.toLimit(command.getLimit().get()))
								.map(this::toTuple);
					}
				} else {

					if (!isLimited) {
						result = cmd.zrangebyscore(command.getKey(), range).map(value -> toTuple(value, Double.NaN));
					} else {

						result = cmd.zrangebyscore(command.getKey(), range, LettuceConverters.toLimit(command.getLimit().get()))
								.map(value -> toTuple(value, Double.NaN));
					}
				}
			} else {

				Range<Number> range = RangeConverter.toRange(command.getRange());

				if (command.isWithScores()) {

					if (!isLimited) {
						result = cmd.zrevrangebyscoreWithScores(command.getKey(), range).map(this::toTuple);
					} else {

						result = cmd.zrevrangebyscoreWithScores(command.getKey(), range,
								LettuceConverters.toLimit(command.getLimit().get())).map(this::toTuple);
					}
				} else {

					if (!isLimited) {
						result = cmd.zrevrangebyscore(command.getKey(), range).map(value -> toTuple(value, Double.NaN));
					} else {

						result = cmd.zrevrangebyscore(command.getKey(), range, LettuceConverters.toLimit(command.getLimit().get()))
								.map(value -> toTuple(value, Double.NaN));
					}
				}
			}

			return Mono.just(new CommandResponse<>(command, Flux.from(result)));
		}));
	}

	@Override
	public Flux<CommandResponse<KeyCommand, Flux<Tuple>>> zScan(Publisher<KeyScanCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getOptions(), "ScanOptions must not be null");

			Flux<Tuple> result = ScanStream.zscan(cmd, command.getKey(), LettuceConverters.toScanArgs(command.getOptions()))
					.map(this::toTuple);

			return Mono.just(new CommandResponse<>(command, result));
		}));
	}

	@Override
	public Flux<NumericResponse<ZCountCommand, Long>> zCount(Publisher<ZCountCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getRange(), "Range must not be null");

			Range<Number> range = RangeConverter.toRange(command.getRange());
			Mono<Long> result = cmd.zcount(command.getKey(), range);

			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<NumericResponse<ZLexCountCommand, Long>> zLexCount(Publisher<ZLexCountCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getRange(), "Range must not be null");

			Mono<Long> result = cmd.zlexcount(command.getKey(), RangeConverter.toRange(command.getRange()));

			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<CommandResponse<ZPopCommand, Flux<Tuple>>> zPop(Publisher<ZPopCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");

			Flux<ScoredValue<ByteBuffer>> result;
			if (command.getCount() > 1) {
				result = command.getDirection() == PopDirection.MIN ? cmd.zpopmin(command.getKey(), command.getCount())
						: cmd.zpopmax(command.getKey(), command.getCount());
			} else {
				result = (command.getDirection() == PopDirection.MIN ? cmd.zpopmin(command.getKey())
						: cmd.zpopmax(command.getKey())).flux();
			}

			return new CommandResponse<>(command, result.filter(Value::hasValue).map(this::toTuple));
		}));
	}

	@Override
	public Flux<CommandResponse<BZPopCommand, Flux<Tuple>>> bZPop(Publisher<BZPopCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getTimeout(), "Timeout must not be null");

			if(command.getTimeUnit() == TimeUnit.MILLISECONDS) {

				double timeout = TimeoutUtils.toDoubleSeconds(command.getTimeout(), command.getTimeUnit());

				Mono<ScoredValue<ByteBuffer>> result = (command.getDirection() == PopDirection.MIN
						? cmd.bzpopmin(timeout, command.getKey())
						: cmd.bzpopmax(timeout, command.getKey())).filter(Value::hasValue).map(Value::getValue);

				return new CommandResponse<>(command, result.filter(Value::hasValue).map(this::toTuple).flux());
			}

			long timeout = command.getTimeUnit().toSeconds(command.getTimeout());

			Mono<ScoredValue<ByteBuffer>> result = (command.getDirection() == PopDirection.MIN
					? cmd.bzpopmin(timeout, command.getKey())
					: cmd.bzpopmax(timeout, command.getKey())).filter(Value::hasValue).map(Value::getValue);

			return new CommandResponse<>(command, result.filter(Value::hasValue).map(this::toTuple).flux());
		}));
	}

	@Override
	public Flux<NumericResponse<KeyCommand, Long>> zCard(Publisher<KeyCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");

			return cmd.zcard(command.getKey()).map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<NumericResponse<ZScoreCommand, Double>> zScore(Publisher<ZScoreCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getValue(), "Value must not be null");

			return cmd.zscore(command.getKey(), command.getValue()).map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<MultiValueResponse<ZMScoreCommand, Double>> zMScore(Publisher<ZMScoreCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getValues(), "Values must not be null");

			return cmd.zmscore(command.getKey(), command.getValues().toArray(new ByteBuffer[0]))
					.map(value -> new MultiValueResponse<>(command, value));
		}));
	}

	@Override
	public Flux<NumericResponse<ZRemRangeByRankCommand, Long>> zRemRangeByRank(
			Publisher<ZRemRangeByRankCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getRange(), "Range must not be null");

			Mono<Long> result = cmd.zremrangebyrank(command.getKey(), //
					LettuceConverters.getLowerBoundIndex(command.getRange()), //
					LettuceConverters.getUpperBoundIndex(command.getRange()));

			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<NumericResponse<ZRemRangeByScoreCommand, Long>> zRemRangeByScore(
			Publisher<ZRemRangeByScoreCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getRange(), "Range must not be null");

			Range<Number> range = RangeConverter.toRange(command.getRange());
			Mono<Long> result = cmd.zremrangebyscore(command.getKey(), range);

			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<NumericResponse<ZRemRangeByLexCommand, Long>> zRemRangeByLex(Publisher<ZRemRangeByLexCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Key must not be null");
			Assert.notNull(command.getRange(), "Range must not be null");

			Mono<Long> result = cmd.zremrangebylex(command.getKey(), RangeConverter.toRange(command.getRange()));

			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<CommandResponse<ZDiffCommand, Flux<ByteBuffer>>> zDiff(Publisher<? extends ZDiffCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notEmpty(command.getKeys(), "Keys must not be null or empty");

			ByteBuffer[] sourceKeys = command.getKeys().toArray(new ByteBuffer[0]);
			return new CommandResponse<>(command, cmd.zdiff(sourceKeys));
		}));
	}

	@Override
	public Flux<CommandResponse<ZDiffCommand, Flux<Tuple>>> zDiffWithScores(Publisher<? extends ZDiffCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notEmpty(command.getKeys(), "Keys must not be null or empty");

			ByteBuffer[] sourceKeys = command.getKeys().toArray(new ByteBuffer[0]);
			return new CommandResponse<>(command, cmd.zdiffWithScores(sourceKeys).map(this::toTuple));
		}));
	}

	@Override
	public Flux<NumericResponse<ZDiffStoreCommand, Long>> zDiffStore(Publisher<ZDiffStoreCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Destination key must not be null");
			Assert.notEmpty(command.getSourceKeys(), "Source keys must not be null or empty");

			ByteBuffer[] sourceKeys = command.getSourceKeys().toArray(new ByteBuffer[0]);
			return cmd.zdiffstore(command.getKey(), sourceKeys).map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<CommandResponse<ZAggregateCommand, Flux<ByteBuffer>>> zInter(
			Publisher<? extends ZAggregateCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notEmpty(command.getSourceKeys(), "Source keys must not be null or empty");

			ZStoreArgs args = null;
			if (command.getAggregateFunction().isPresent() || !command.getWeights().isEmpty()) {
				args = zStoreArgs(command.getAggregateFunction().isPresent() ? command.getAggregateFunction().get() : null,
						command.getWeights());
			}

			ByteBuffer[] sourceKeys = command.getSourceKeys().toArray(new ByteBuffer[0]);
			Flux<ByteBuffer> result = args != null ? cmd.zinter(args, sourceKeys) : cmd.zinter(sourceKeys);
			return new CommandResponse<>(command, result);
		}));
	}

	@Override
	public Flux<CommandResponse<ZAggregateCommand, Flux<Tuple>>> zInterWithScores(
			Publisher<? extends ZAggregateCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notEmpty(command.getSourceKeys(), "Source keys must not be null or empty");

			ZStoreArgs args = null;
			if (command.getAggregateFunction().isPresent() || !command.getWeights().isEmpty()) {
				args = zStoreArgs(command.getAggregateFunction().isPresent() ? command.getAggregateFunction().get() : null,
						command.getWeights());
			}

			ByteBuffer[] sourceKeys = command.getSourceKeys().toArray(new ByteBuffer[0]);
			Flux<ScoredValue<ByteBuffer>> result = args != null ? cmd.zinterWithScores(args, sourceKeys)
					: cmd.zinterWithScores(sourceKeys);
			return new CommandResponse<>(command, result.map(this::toTuple));
		}));
	}

	@Override
	public Flux<NumericResponse<ZAggregateStoreCommand, Long>> zInterStore(
			Publisher<? extends ZAggregateStoreCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Destination key must not be null");
			Assert.notEmpty(command.getSourceKeys(), "Source keys must not be null or empty");

			ZStoreArgs args = null;
			if (command.getAggregateFunction().isPresent() || !command.getWeights().isEmpty()) {
				args = zStoreArgs(command.getAggregateFunction().isPresent() ? command.getAggregateFunction().get() : null,
						command.getWeights());
			}

			ByteBuffer[] sourceKeys = command.getSourceKeys().toArray(new ByteBuffer[0]);
			Mono<Long> result = args != null ? cmd.zinterstore(command.getKey(), args, sourceKeys)
					: cmd.zinterstore(command.getKey(), sourceKeys);
			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<CommandResponse<ZAggregateCommand, Flux<ByteBuffer>>> zUnion(
			Publisher<? extends ZAggregateCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notEmpty(command.getSourceKeys(), "Source keys must not be null or empty");

			ZStoreArgs args = null;
			if (command.getAggregateFunction().isPresent() || !command.getWeights().isEmpty()) {
				args = zStoreArgs(command.getAggregateFunction().isPresent() ? command.getAggregateFunction().get() : null,
						command.getWeights());
			}

			ByteBuffer[] sourceKeys = command.getSourceKeys().stream().toArray(ByteBuffer[]::new);
			Flux<ByteBuffer> result = args != null ? cmd.zunion(args, sourceKeys) : cmd.zunion(sourceKeys);
			return new CommandResponse<>(command, result);
		}));
	}

	@Override
	public Flux<CommandResponse<ZAggregateCommand, Flux<Tuple>>> zUnionWithScores(
			Publisher<? extends ZAggregateCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).map(command -> {

			Assert.notEmpty(command.getSourceKeys(), "Source keys must not be null or empty");

			ZStoreArgs args = null;
			if (command.getAggregateFunction().isPresent() || !command.getWeights().isEmpty()) {
				args = zStoreArgs(command.getAggregateFunction().isPresent() ? command.getAggregateFunction().get() : null,
						command.getWeights());
			}

			ByteBuffer[] sourceKeys = command.getSourceKeys().stream().toArray(ByteBuffer[]::new);
			Flux<ScoredValue<ByteBuffer>> result = args != null ? cmd.zunionWithScores(args, sourceKeys)
					: cmd.zunionWithScores(sourceKeys);
			return new CommandResponse<>(command, result.map(this::toTuple));
		}));
	}

	@Override
	public Flux<NumericResponse<ZAggregateStoreCommand, Long>> zUnionStore(
			Publisher<? extends ZAggregateStoreCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Destination key must not be null");
			Assert.notEmpty(command.getSourceKeys(), "Source keys must not be null or empty");

			ZStoreArgs args = null;
			if (command.getAggregateFunction().isPresent() || !command.getWeights().isEmpty()) {
				args = zStoreArgs(command.getAggregateFunction().isPresent() ? command.getAggregateFunction().get() : null,
						command.getWeights());
			}

			ByteBuffer[] sourceKeys = command.getSourceKeys().stream().toArray(ByteBuffer[]::new);
			Mono<Long> result = args != null ? cmd.zunionstore(command.getKey(), args, sourceKeys)
					: cmd.zunionstore(command.getKey(), sourceKeys);
			return result.map(value -> new NumericResponse<>(command, value));
		}));
	}

	@Override
	public Flux<CommandResponse<ZRangeByLexCommand, Flux<ByteBuffer>>> zRangeByLex(
			Publisher<ZRangeByLexCommand> commands) {

		return connection.execute(cmd -> Flux.from(commands).concatMap(command -> {

			Assert.notNull(command.getKey(), "Destination key must not be null");

			Flux<ByteBuffer> result;

			if (!command.getLimit().isUnlimited()) {

				if (ObjectUtils.nullSafeEquals(command.getDirection(), Direction.ASC)) {
					result = cmd.zrangebylex(command.getKey(), RangeConverter.toRange(command.getRange()),
							LettuceConverters.toLimit(command.getLimit()));
				} else {
					result = cmd.zrevrangebylex(command.getKey(), RangeConverter.toRange(command.getRange()),
							LettuceConverters.toLimit(command.getLimit()));
				}
			} else {
				if (ObjectUtils.nullSafeEquals(command.getDirection(), Direction.ASC)) {
					result = cmd.zrangebylex(command.getKey(), RangeConverter.toRange(command.getRange()));
				} else {
					result = cmd.zrevrangebylex(command.getKey(), RangeConverter.toRange(command.getRange()));
				}
			}

			return Mono.just(new CommandResponse<>(command, result));
		}));
	}

	private static ZStoreArgs zStoreArgs(@Nullable Aggregate aggregate, @Nullable List<Double> weights) {

		ZStoreArgs args = new ZStoreArgs();
		if (aggregate != null) {
			switch (aggregate) {
				case MIN:
					args.min();
					break;
				case MAX:
					args.max();
					break;
				default:
					args.sum();
					break;
			}
		}

		if (weights != null) {
			args.weights(weights.stream().mapToDouble(it -> it).toArray());
		}

		return args;
	}

	private Tuple toTuple(ScoredValue<ByteBuffer> scoredValue) {
		return scoredValue.map(it -> new DefaultTuple(ByteUtils.getBytes(it), scoredValue.getScore())).getValue();
	}

	private Tuple toTuple(ByteBuffer value, double score) {
		return new DefaultTuple(ByteUtils.getBytes(value), score);
	}

	protected LettuceReactiveRedisConnection getConnection() {
		return connection;
	}
}

相关信息

spring-data-redis 源码目录

相关文章

spring-data-redis ClusterConnectionProvider 源码

spring-data-redis DefaultLettuceClientConfiguration 源码

spring-data-redis DefaultLettucePoolingClientConfiguration 源码

spring-data-redis LettuceByteBufferPubSubListenerWrapper 源码

spring-data-redis LettuceClientConfiguration 源码

spring-data-redis LettuceClusterConnection 源码

spring-data-redis LettuceClusterGeoCommands 源码

spring-data-redis LettuceClusterHashCommands 源码

spring-data-redis LettuceClusterHyperLogLogCommands 源码

spring-data-redis LettuceClusterKeyCommands 源码