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    • org.redisson.client.protocol.decoder.StreamObjectMapReplayDecoder Maven / Gradle / Ivy

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    Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC

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    /**
 * Copyright (c) 2013-2024 Nikita Koksharov
 *
 * 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.redisson.client.protocol.decoder;

import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.redisson.client.codec.Codec;
import org.redisson.client.handler.State;
import org.redisson.client.protocol.Decoder;

/**
 * 
 * @author Nikita Koksharov
 *
 */
public class StreamObjectMapReplayDecoder extends ObjectMapReplayDecoder {

    private Decoder codec;
    
    public StreamObjectMapReplayDecoder() {
    }
    
    public StreamObjectMapReplayDecoder(Decoder codec) {
        super();
        this.codec = codec;
    }

    @Override
    public Map decode(List parts, State state) {
        if (parts.isEmpty()
                || parts.get(0) == null
                    || (parts.get(0) instanceof List && ((List) parts.get(0)).isEmpty())) {
            parts.clear();
            return Collections.emptyMap();
        }

        if (parts.get(0) instanceof Map) {
            Map result = new LinkedHashMap(parts.size());
            for (int i = 0; i < parts.size(); i++) {
                result.putAll((Map) parts.get(i));
            }
            return result;
        }
        return super.decode(parts, state);
    }

    @Override
    public Decoder getDecoder(Codec codec, int paramNum, State state, long size) {
        if (this.codec != null) {
            return this.codec;
        }
        return super.getDecoder(codec, paramNum, state, size);
    }

}
    
    
    
    

    




    
    
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