Index.java

package com.osroyale.fs.cache;
 
import com.osroyale.fs.util.ByteBufferUtil;
 
import java.nio.ByteBuffer;

 
public final class Index {

    private final int length;

    private final int id;

    private Index(int length, int id) {
        this.length = length;
        this.id = id;
    }

    public static Index decode(ByteBuffer buffer) {
        int length = ByteBufferUtil.getMedium(buffer);
        int id = ByteBufferUtil.getMedium(buffer);
        return new Index(length, id);
    }

    public int getId() {
        return id;
    }

    public int getLength() {
        return length;
    }

    public boolean check() {
        return length > 0;
    }
 
}