aappddeevv

#scala, Map[String, Any] and scalaz Validation

#The Problem

I seem to encounter alot of Map[String, Any] in my programming probably because I am using graph databases alot that store key-value pairs in the nodes and relationships (think neo4j).

Because of this, I encounter alot of map-like processing. Being able to fluently handle these map structures fluently during data import processing or just general processing is very important.

The classic problem I ran into a lot was how to use the Map object more fluently and easily in my data import or query-like processing. I usually have a UI with my application and the UI needs to be able almost any data structure, so it is usually setup to be fairly robust to not knowing the exact types of values in the map or deriving those from the data itself. However, for data import processing as well as querying, I typically do need to know and count on a few well known types for values that are guaranteed to be in my objects like a name (a String) or some other proper

benjchristensen

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;