eyros 2.0.0

multi-dimensional interval database
Documentation 
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use eyros::{DB,Row};
use rand::random;
use failure::Error;
use random_access_disk::RandomAccessDisk;
use std::path::PathBuf;

type P = ((f32,f32),(f32,f32),f32);
type V = u32;

fn main() -> Result<(),Error> {
  let mut db: DB<_,_,((f32,f32),(f32,f32),f32),u32> = DB::open(storage)?;
  let polygons: Vec<Row<P,V>> = (0..800).map(|_| {
    let xmin: f32 = random::<f32>()*2.0-1.0;
    let xmax: f32 = xmin + random::<f32>().powf(64.0)*(1.0-xmin);
    let ymin: f32 = random::<f32>()*2.0-1.0;
    let ymax: f32 = ymin + random::<f32>().powf(64.0)*(1.0-ymin);
    let time: f32 = random::<f32>()*1000.0;
    let value: u32 = random();
    let point = ((xmin,xmax),(ymin,ymax),time);
    Row::Insert(point, value)
  }).collect();
  db.batch(&polygons)?;

  let bbox = ((-0.5,-0.8,0.0),(0.3,-0.5,100.0));
  for result in db.query(&bbox)? {
    println!("{:?}", result?);
  }
  Ok(())
}

fn storage(name:&str) -> Result<RandomAccessDisk,Error> {
  let mut p = PathBuf::from("/tmp/eyros-polygons-db/");
  p.push(name);
  Ok(RandomAccessDisk::builder(p)
    .auto_sync(false)
    .build()?)
}