/*
* Copyright 2016-2017 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
*
* http://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;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import org.reactivestreams.Publisher;
import org.springframework.data.redis.connection.ReactiveRedisConnection.BooleanResponse;
import org.springframework.data.redis.connection.ReactiveRedisConnection.ByteBufferResponse;
import org.springframework.data.redis.connection.ReactiveRedisConnection.Command;
import org.springframework.data.redis.connection.ReactiveRedisConnection.CommandResponse;
import org.springframework.data.redis.connection.ReactiveRedisConnection.KeyCommand;
import org.springframework.data.redis.connection.ReactiveRedisConnection.NumericResponse;
import org.springframework.util.Assert;
/**
* Redis Set commands executed using reactive infrastructure.
*
* @author Christoph Strobl
* @author Mark Paluch
* @since 2.0
*/
public interface ReactiveSetCommands {
/**
* {@code SADD} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/sadd">Redis Documentation: SADD</a>
*/
class SAddCommand extends KeyCommand {
private List<ByteBuffer> values;
private SAddCommand(ByteBuffer key, List<ByteBuffer> values) {
super(key);
this.values = values;
}
/**
* Creates a new {@link SAddCommand} given a {@literal value}.
*
* @param value must not be {@literal null}.
* @return a new {@link SAddCommand} for a {@literal value}.
*/
public static SAddCommand value(ByteBuffer value) {
Assert.notNull(value, "Value must not be null!");
return values(Collections.singletonList(value));
}
/**
* Creates a new {@link SAddCommand} given a {@link Collection} of values.
*
* @param values must not be {@literal null}.
* @return a new {@link SAddCommand} for a {@link Collection} of values.
*/
public static SAddCommand values(Collection<ByteBuffer> values) {
Assert.notNull(values, "Values must not be null!");
return new SAddCommand(null, new ArrayList<>(values));
}
/**
* Applies the {@literal key}. Constructs a new command instance with all previously configured properties.
*
* @param key must not be {@literal null}.
* @return a new {@link SAddCommand} with {@literal key} applied.
*/
public SAddCommand to(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return new SAddCommand(key, values);
}
/**
* @return
*/
public List<ByteBuffer> getValues() {
return values;
}
}
/**
* Add given {@literal value} to set at {@literal key}.
*
* @param key must not be {@literal null}.
* @param value must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sadd">Redis Documentation: SADD</a>
*/
default Mono<Long> sAdd(ByteBuffer key, ByteBuffer value) {
Assert.notNull(value, "Value must not be null!");
return sAdd(key, Collections.singletonList(value));
}
/**
* Add given {@literal values} to set at {@literal key}.
*
* @param key must not be {@literal null}.
* @param values must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sadd">Redis Documentation: SADD</a>
*/
default Mono<Long> sAdd(ByteBuffer key, Collection<ByteBuffer> values) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(values, "Values must not be null!");
return sAdd(Mono.just(SAddCommand.values(values).to(key))).next().map(NumericResponse::getOutput);
}
/**
* Add given {@link SAddCommand#getValues()} to set at {@link SAddCommand#getKey()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sadd">Redis Documentation: SADD</a>
*/
Flux<NumericResponse<SAddCommand, Long>> sAdd(Publisher<SAddCommand> commands);
/**
* {@code SREM} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/srem">Redis Documentation: SREM</a>
*/
class SRemCommand extends KeyCommand {
private final List<ByteBuffer> values;
private SRemCommand(ByteBuffer key, List<ByteBuffer> values) {
super(key);
this.values = values;
}
/**
* Creates a new {@link SRemCommand} given a {@literal value}.
*
* @param value must not be {@literal null}.
* @return a new {@link SRemCommand} for a {@literal value}.
*/
public static SRemCommand value(ByteBuffer value) {
Assert.notNull(value, "Value must not be null!");
return values(Collections.singletonList(value));
}
/**
* Creates a new {@link SRemCommand} given a {@link Collection} of values.
*
* @param values must not be {@literal null}.
* @return a new {@link SRemCommand} for a {@link Collection} of values.
*/
public static SRemCommand values(Collection<ByteBuffer> values) {
Assert.notNull(values, "Values must not be null!");
return new SRemCommand(null, new ArrayList<>(values));
}
/**
* Applies the {@literal key}. Constructs a new command instance with all previously configured properties.
*
* @param key must not be {@literal null}.
* @return a new {@link SRemCommand} with {@literal key} applied.
*/
public SRemCommand from(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return new SRemCommand(key, values);
}
/**
* @return
*/
public List<ByteBuffer> getValues() {
return values;
}
}
/**
* Remove given {@literal value} from set at {@literal key} and return the number of removed elements.
*
* @param key must not be {@literal null}.
* @param value must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/srem">Redis Documentation: SREM</a>
*/
default Mono<Long> sRem(ByteBuffer key, ByteBuffer value) {
Assert.notNull(value, "Value must not be null!");
return sRem(key, Collections.singletonList(value));
}
/**
* Remove given {@literal values} from set at {@literal key} and return the number of removed elements.
*
* @param key must not be {@literal null}.
* @param values must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/srem">Redis Documentation: SREM</a>
*/
default Mono<Long> sRem(ByteBuffer key, Collection<ByteBuffer> values) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(values, "Values must not be null!");
return sRem(Mono.just(SRemCommand.values(values).from(key))).next().map(NumericResponse::getOutput);
}
/**
* Remove given {@link SRemCommand#getValues()} from set at {@link SRemCommand#getKey()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/srem">Redis Documentation: SREM</a>
*/
Flux<NumericResponse<SRemCommand, Long>> sRem(Publisher<SRemCommand> commands);
/**
* Remove and return a random member from set at {@literal key}.
*
* @param key must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/spop">Redis Documentation: SPOP</a>
*/
default Mono<ByteBuffer> sPop(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return sPop(Mono.just(new KeyCommand(key))).next().map(ByteBufferResponse::getOutput);
}
/**
* Remove and return a random member from set at {@link KeyCommand#getKey()}
*
* @param commands
* @return
* @see <a href="http://redis.io/commands/spop">Redis Documentation: SPOP</a>
*/
Flux<ByteBufferResponse<KeyCommand>> sPop(Publisher<KeyCommand> commands);
/**
* {@code SMOVE} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/smove">Redis Documentation: SMOVE</a>
*/
class SMoveCommand extends KeyCommand {
private final ByteBuffer destination;
private final ByteBuffer value;
private SMoveCommand(ByteBuffer key, ByteBuffer destination, ByteBuffer value) {
super(key);
this.destination = destination;
this.value = value;
}
/**
* Creates a new {@link SMoveCommand} given a {@literal value}.
*
* @param value must not be {@literal null}.
* @return a new {@link SMoveCommand} for a {@literal value}.
*/
public static SMoveCommand value(ByteBuffer value) {
Assert.notNull(value, "Value must not be null!");
return new SMoveCommand(null, null, value);
}
/**
* Applies the {@literal source} key. Constructs a new command instance with all previously configured properties.
*
* @param source must not be {@literal null}.
* @return a new {@link SMoveCommand} with {@literal source} applied.
*/
public SMoveCommand from(ByteBuffer source) {
Assert.notNull(source, "Source key must not be null!");
return new SMoveCommand(source, destination, value);
}
/**
* Applies the {@literal destination} key. Constructs a new command instance with all previously configured
* properties.
*
* @param destination must not be {@literal null}.
* @return a new {@link SMoveCommand} with {@literal destination} applied.
*/
public SMoveCommand to(ByteBuffer destination) {
Assert.notNull(destination, "Destination key must not be null!");
return new SMoveCommand(getKey(), destination, value);
}
/**
* @return
*/
public ByteBuffer getDestination() {
return destination;
}
/**
* @return
*/
public ByteBuffer getValue() {
return value;
}
}
/**
* Move {@literal value} from {@literal sourceKey} to {@literal destinationKey}
*
* @param sourceKey must not be {@literal null}.
* @param destinationKey must not be {@literal null}.
* @param value must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/smove">Redis Documentation: SMOVE</a>
*/
default Mono<Boolean> sMove(ByteBuffer sourceKey, ByteBuffer destinationKey, ByteBuffer value) {
Assert.notNull(sourceKey, "SourceKey must not be null!");
Assert.notNull(destinationKey, "DestinationKey must not be null!");
Assert.notNull(value, "Value must not be null!");
return sMove(Mono.just(SMoveCommand.value(value).from(sourceKey).to(destinationKey))).next()
.map(BooleanResponse::getOutput);
}
/**
* Move {@link SMoveCommand#getValue()} from {@link SMoveCommand#getKey()} to {@link SMoveCommand#getDestination()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/smove">Redis Documentation: SMOVE</a>
*/
Flux<BooleanResponse<SMoveCommand>> sMove(Publisher<SMoveCommand> commands);
/**
* Get size of set at {@literal key}.
*
* @param key must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/scard">Redis Documentation: SCARD</a>
*/
default Mono<Long> sCard(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return sCard(Mono.just(new KeyCommand(key))).next().map(NumericResponse::getOutput);
}
/**
* Get size of set at {@link KeyCommand#getKey()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/scard">Redis Documentation: SCARD</a>
*/
Flux<NumericResponse<KeyCommand, Long>> sCard(Publisher<KeyCommand> commands);
/**
* {@code SISMEMBER} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/sismember">Redis Documentation: SISMEMBER</a>
*/
class SIsMemberCommand extends KeyCommand {
private final ByteBuffer value;
private SIsMemberCommand(ByteBuffer key, ByteBuffer value) {
super(key);
this.value = value;
}
/**
* Creates a new {@link SIsMemberCommand} given a {@literal value}.
*
* @param value must not be {@literal null}.
* @return a new {@link SIsMemberCommand} for a {@literal value}.
*/
public static SIsMemberCommand value(ByteBuffer value) {
Assert.notNull(value, "Value must not be null!");
return new SIsMemberCommand(null, value);
}
/**
* Applies the {@literal set} key. Constructs a new command instance with all previously configured properties.
*
* @param set must not be {@literal null}.
* @return a new {@link SIsMemberCommand} with {@literal set} applied.
*/
public SIsMemberCommand of(ByteBuffer set) {
Assert.notNull(set, "Set key must not be null!");
return new SIsMemberCommand(set, value);
}
/**
* @return
*/
public ByteBuffer getValue() {
return value;
}
}
/**
* Check if set at {@literal key} contains {@literal value}.
*
* @param key must not be {@literal null}.
* @param value must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sismember">Redis Documentation: SISMEMBER</a>
*/
default Mono<Boolean> sIsMember(ByteBuffer key, ByteBuffer value) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(value, "Value must not be null!");
return sIsMember(Mono.just(SIsMemberCommand.value(value).of(key))).next().map(BooleanResponse::getOutput);
}
/**
* Check if set at {@link SIsMemberCommand#getKey()} contains {@link SIsMemberCommand#getKey()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sismember">Redis Documentation: SISMEMBER</a>
*/
Flux<BooleanResponse<SIsMemberCommand>> sIsMember(Publisher<SIsMemberCommand> commands);
/**
* {@code SINTER} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/sinter">Redis Documentation: SINTER</a>
*/
class SInterCommand implements Command {
private final List<ByteBuffer> keys;
private SInterCommand(List<ByteBuffer> keys) {
this.keys = keys;
}
/**
* Creates a new {@link SInterCommand} given a {@link Collection} of keys.
*
* @param keys must not be {@literal null}.
* @return a new {@link SInterCommand} for a {@link Collection} of values.
*/
public static SInterCommand keys(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return new SInterCommand(new ArrayList<>(keys));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.connection.ReactiveRedisConnection.Command#getKey()
*/
@Override
public ByteBuffer getKey() {
return null;
}
/**
* @return
*/
public List<ByteBuffer> getKeys() {
return keys;
}
}
/**
* Returns the members intersecting all given sets at {@literal keys}.
*
* @param keys must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sinter">Redis Documentation: SINTER</a>
*/
default Flux<ByteBuffer> sInter(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return sInter(Mono.just(SInterCommand.keys(keys))).flatMap(CommandResponse::getOutput);
}
/**
* Returns the members intersecting all given sets at {@link SInterCommand#getKeys()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sinter">Redis Documentation: SINTER</a>
*/
Flux<CommandResponse<SInterCommand, Flux<ByteBuffer>>> sInter(Publisher<SInterCommand> commands);
/**
* {@code SINTERSTORE} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/sinterstore">Redis Documentation: SINTERSTORE</a>
*/
class SInterStoreCommand extends KeyCommand {
private final List<ByteBuffer> keys;
private SInterStoreCommand(ByteBuffer key, List<ByteBuffer> keys) {
super(key);
this.keys = keys;
}
/**
* Creates a new {@link SInterStoreCommand} given a {@link Collection} of keys.
*
* @param keys must not be {@literal null}.
* @return a new {@link SInterStoreCommand} for a {@link Collection} of values.
*/
public static SInterStoreCommand keys(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return new SInterStoreCommand(null, new ArrayList<>(keys));
}
/**
* Applies the {@literal key} at which the result is stored. Constructs a new command instance with all previously
* configured properties.
*
* @param key must not be {@literal null}.
* @return a new {@link SInterStoreCommand} with {@literal key} applied.
*/
public SInterStoreCommand storeAt(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return new SInterStoreCommand(key, keys);
}
/**
* @return
*/
public List<ByteBuffer> getKeys() {
return keys;
}
}
/**
* Intersect all given sets at {@literal keys} and store result in {@literal destinationKey}.
*
* @param destinationKey must not be {@literal null}.
* @param keys must not be {@literal null}.
* @return size of set stored a {@literal destinationKey}.
* @see <a href="http://redis.io/commands/sinterstore">Redis Documentation: SINTERSTORE</a>
*/
default Mono<Long> sInterStore(ByteBuffer destinationKey, Collection<ByteBuffer> keys) {
Assert.notNull(destinationKey, "DestinationKey must not be null!");
Assert.notNull(keys, "Keys must not be null!");
return sInterStore(Mono.just(SInterStoreCommand.keys(keys).storeAt(destinationKey))).next()
.map(NumericResponse::getOutput);
}
/**
* Intersect all given sets at {@literal keys} and store result in {@literal destinationKey}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sinterstore">Redis Documentation: SINTERSTORE</a>
*/
Flux<NumericResponse<SInterStoreCommand, Long>> sInterStore(Publisher<SInterStoreCommand> commands);
/**
* {@code SUNION} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/sunion">Redis Documentation: SUNION</a>
*/
class SUnionCommand implements Command {
private final List<ByteBuffer> keys;
private SUnionCommand(List<ByteBuffer> keys) {
this.keys = keys;
}
/**
* Creates a new {@link SUnionCommand} given a {@link Collection} of keys.
*
* @param keys must not be {@literal null}.
* @return a new {@link SUnionCommand} for a {@link Collection} of values.
*/
public static SUnionCommand keys(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return new SUnionCommand(new ArrayList<>(keys));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.connection.ReactiveRedisConnection.Command#getKey()
*/
@Override
public ByteBuffer getKey() {
return null;
}
/**
* @return
*/
public List<ByteBuffer> getKeys() {
return keys;
}
}
/**
* Returns the members intersecting all given sets at {@literal keys}.
*
* @param keys must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sunion">Redis Documentation: SUNION</a>
*/
default Flux<ByteBuffer> sUnion(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return sUnion(Mono.just(SUnionCommand.keys(keys))).flatMap(CommandResponse::getOutput);
}
/**
* Returns the members intersecting all given sets at {@link SInterCommand#getKeys()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sunion">Redis Documentation: SUNION</a>
*/
Flux<CommandResponse<SUnionCommand, Flux<ByteBuffer>>> sUnion(Publisher<SUnionCommand> commands);
/**
* {@code SUNIONSTORE} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/sunionstore">Redis Documentation: SUNIONSTORE</a>
*/
class SUnionStoreCommand extends KeyCommand {
private final List<ByteBuffer> keys;
private SUnionStoreCommand(ByteBuffer key, List<ByteBuffer> keys) {
super(key);
this.keys = keys;
}
/**
* Creates a new {@link SUnionStoreCommand} given a {@link Collection} of keys.
*
* @param keys must not be {@literal null}.
* @return a new {@link SUnionStoreCommand} for a {@link Collection} of values.
*/
public static SUnionStoreCommand keys(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return new SUnionStoreCommand(null, new ArrayList<>(keys));
}
/**
* Applies the {@literal key} at which the result is stored. Constructs a new command instance with all previously
* configured properties.
*
* @param key must not be {@literal null}.
* @return a new {@link SUnionStoreCommand} with {@literal key} applied.
*/
public SUnionStoreCommand storeAt(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return new SUnionStoreCommand(key, keys);
}
/**
* @return
*/
public List<ByteBuffer> getKeys() {
return keys;
}
}
/**
* Union all given sets at {@literal keys} and store result in {@literal destinationKey}.
*
* @param destinationKey must not be {@literal null}.
* @param keys must not be {@literal null}.
* @return size of set stored a {@literal destinationKey}.
* @see <a href="http://redis.io/commands/sunionstore">Redis Documentation: SUNIONSTORE</a>
*/
default Mono<Long> sUnionStore(ByteBuffer destinationKey, Collection<ByteBuffer> keys) {
Assert.notNull(destinationKey, "DestinationKey must not be null!");
Assert.notNull(keys, "Keys must not be null!");
return sUnionStore(Mono.just(SUnionStoreCommand.keys(keys).storeAt(destinationKey))).next()
.map(NumericResponse::getOutput);
}
/**
* Union all given sets at {@literal keys} and store result in {@literal destinationKey}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sunionstore">Redis Documentation: SUNIONSTORE</a>
*/
Flux<NumericResponse<SUnionStoreCommand, Long>> sUnionStore(Publisher<SUnionStoreCommand> commands);
/**
* {@code SDIFF} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/sdiff">Redis Documentation: SDIFF</a>
*/
class SDiffCommand implements Command {
private final List<ByteBuffer> keys;
private SDiffCommand(List<ByteBuffer> keys) {
this.keys = keys;
}
/**
* Creates a new {@link SDiffCommand} given a {@link Collection} of keys.
*
* @param keys must not be {@literal null}.
* @return a new {@link SDiffCommand} for a {@link Collection} of values.
*/
public static SDiffCommand keys(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return new SDiffCommand(new ArrayList<>(keys));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.connection.ReactiveRedisConnection.Command#getKey()
*/
@Override
public ByteBuffer getKey() {
return null;
}
/**
* @return
*/
public List<ByteBuffer> getKeys() {
return keys;
}
}
/**
* Returns the diff of the members of all given sets at {@literal keys}.
*
* @param keys must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sdiff">Redis Documentation: SDIFF</a>
*/
default Flux<ByteBuffer> sDiff(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return sDiff(Mono.just(SDiffCommand.keys(keys))).flatMap(CommandResponse::getOutput);
}
/**
* Returns the diff of the members of all given sets at {@link SInterCommand#getKeys()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sdiff">Redis Documentation: SDIFF</a>
*/
Flux<CommandResponse<SDiffCommand, Flux<ByteBuffer>>> sDiff(Publisher<SDiffCommand> commands);
/**
* {@code SDIFFSTORE} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/sdiffstore">Redis Documentation: SDIFFSTORE</a>
*/
class SDiffStoreCommand extends KeyCommand {
private final List<ByteBuffer> keys;
private SDiffStoreCommand(ByteBuffer key, List<ByteBuffer> keys) {
super(key);
this.keys = keys;
}
/**
* Creates a new {@link SDiffStoreCommand} given a {@link Collection} of keys.
*
* @param keys must not be {@literal null}.
* @return a new {@link SDiffStoreCommand} for a {@link Collection} of values.
*/
public static SDiffStoreCommand keys(Collection<ByteBuffer> keys) {
Assert.notNull(keys, "Keys must not be null!");
return new SDiffStoreCommand(null, new ArrayList<>(keys));
}
/**
* Applies the {@literal key} at which the result is stored. Constructs a new command instance with all previously
* configured properties.
*
* @param key must not be {@literal null}.
* @return a new {@link SDiffStoreCommand} with {@literal key} applied.
*/
public SDiffStoreCommand storeAt(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return new SDiffStoreCommand(key, keys);
}
/**
* @return
*/
public List<ByteBuffer> getKeys() {
return keys;
}
}
/**
* Diff all given sets at {@literal keys} and store result in {@literal destinationKey}.
*
* @param destinationKey must not be {@literal null}.
* @param keys must not be {@literal null}.
* @return size of set stored a {@literal destinationKey}.
* @see <a href="http://redis.io/commands/sdiffstore">Redis Documentation: SDIFFSTORE</a>
*/
default Mono<Long> sDiffStore(ByteBuffer destinationKey, Collection<ByteBuffer> keys) {
Assert.notNull(destinationKey, "DestinationKey must not be null!");
Assert.notNull(keys, "Keys must not be null!");
return sDiffStore(Mono.just(SDiffStoreCommand.keys(keys).storeAt(destinationKey))).next()
.map(NumericResponse::getOutput);
}
/**
* Diff all given sets at {@literal keys} and store result in {@literal destinationKey}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/sdiffstore">Redis Documentation: SDIFFSTORE</a>
*/
Flux<NumericResponse<SDiffStoreCommand, Long>> sDiffStore(Publisher<SDiffStoreCommand> commands);
/**
* Get all elements of set at {@literal key}.
*
* @param key must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/smembers">Redis Documentation: SMEMBERS</a>
*/
default Flux<ByteBuffer> sMembers(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return sMembers(Mono.just(new KeyCommand(key))).flatMap(CommandResponse::getOutput);
}
/**
* Get all elements of set at {@link KeyCommand#getKey()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/smembers">Redis Documentation: SMEMBERS</a>
*/
Flux<CommandResponse<KeyCommand, Flux<ByteBuffer>>> sMembers(Publisher<KeyCommand> commands);
/**
* {@code SRANDMEMBER} command parameters.
*
* @author Christoph Strobl
* @see <a href="http://redis.io/commands/srandmember">Redis Documentation: SRANDMEMBER</a>
*/
class SRandMembersCommand extends KeyCommand {
private final Long count;
private SRandMembersCommand(ByteBuffer key, Long count) {
super(key);
this.count = count;
}
/**
* Creates a new {@link SRandMembersCommand} given the number of values to retrieve.
*
* @param nrValuesToRetrieve
* @return a new {@link SRandMembersCommand} for a number of values to retrieve.
*/
public static SRandMembersCommand valueCount(long nrValuesToRetrieve) {
return new SRandMembersCommand(null, nrValuesToRetrieve);
}
/**
* Creates a new {@link SRandMembersCommand} to retrieve one random member.
*
* @return a new {@link SRandMembersCommand} to retrieve one random member.
*/
public static SRandMembersCommand singleValue() {
return new SRandMembersCommand(null, null);
}
/**
* Applies the {@literal key}. Constructs a new command instance with all previously configured properties.
*
* @param key must not be {@literal null}.
* @return a new {@link SRandMembersCommand} with {@literal key} applied.
*/
public SRandMembersCommand from(ByteBuffer key) {
Assert.notNull(key, "Key must not be null!");
return new SRandMembersCommand(key, count);
}
/**
* @return
*/
public Optional<Long> getCount() {
return Optional.ofNullable(count);
}
}
/**
* Get random element from set at {@literal key}.
*
* @param key must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/srandmember">Redis Documentation: SRANDMEMBER</a>
*/
default Mono<ByteBuffer> sRandMember(ByteBuffer key) {
return sRandMember(key, 1L).singleOrEmpty();
}
/**
* Get {@literal count} random elements from set at {@literal key}.
*
* @param key must not be {@literal null}.
* @param count must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/srandmember">Redis Documentation: SRANDMEMBER</a>
*/
default Flux<ByteBuffer> sRandMember(ByteBuffer key, Long count) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(count, "Count must not be null!");
return sRandMember(Mono.just(SRandMembersCommand.valueCount(count).from(key))).flatMap(CommandResponse::getOutput);
}
/**
* Get {@link SRandMembersCommand#getCount()} random elements from set at {@link SRandMembersCommand#getKey()}.
*
* @param commands must not be {@literal null}.
* @return
* @see <a href="http://redis.io/commands/srandmember">Redis Documentation: SRANDMEMBER</a>
*/
Flux<CommandResponse<SRandMembersCommand, Flux<ByteBuffer>>> sRandMember(Publisher<SRandMembersCommand> commands);
}