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package org.lambda.query;

import com.spun.util.LambdaThreadLauncher;
import org.lambda.functions.Function1;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

public class ParallelQuery
{
  public static  List where(Iterable list, final Function1 funct)
  {
    final ArrayList out = new ArrayList();
    final AtomicInteger done = new AtomicInteger();
    int count = 0;
    for (In i : list)
    {
      count++;
      final In piece = i;
      new LambdaThreadLauncher(() -> {
        if (funct.call(piece))
        {
          out.add(piece);
        }
        done.incrementAndGet();
      });
    }
    while (done.get() != count)
    {
      try
      {
        Thread.sleep(2);
      }
      catch (InterruptedException e)
      {
        // do nothing
      }
    }
    return out;
  }
}