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    • com.lambdaworks.redis.output.NestedMultiOutput Maven / Gradle / Ivy

    // Copyright (C) 2011 - Will Glozer.  All rights reserved.

package com.lambdaworks.redis.output;

import com.lambdaworks.redis.RedisException;
import com.lambdaworks.redis.codec.RedisCodec;
import com.lambdaworks.redis.protocol.CommandOutput;

import java.nio.ByteBuffer;
import java.util.*;

/**
 * {@link List} of command outputs, possibly deeply nested.
 *
 * @author Will Glozer
 */
public class NestedMultiOutput extends CommandOutput> {
    private LinkedList> stack;
    private int depth;

    public NestedMultiOutput(RedisCodec codec) {
        super(codec, new ArrayList());
        stack = new LinkedList>();
        depth = 1;
    }

    @Override
    public void set(long integer) {
        output.add(integer);
    }

    @Override
    public void set(ByteBuffer bytes) {
        output.add(bytes == null ? null : codec.decodeValue(bytes));
    }

    @Override
    public void setError(ByteBuffer error) {
        output.add(new RedisException(decodeAscii(error)));
    }

    @Override
    public void complete(int depth) {
        if (depth > this.depth) {
            Object o = output.remove(output.size() - 1);
            stack.push(output);
            output = new ArrayList();
            output.add(o);
        } else if (depth > 0 && depth < this.depth) {
            stack.peek().add(output);
            output = stack.pop();
        }
        this.depth = depth;
    }
}
    
    
    
    

    




    
    
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