Examples with Coverage com.github.davidmoten.geo.Coverage used on opensource projects

Example 1 with Coverage

use of com.github.davidmoten.geo.Coverage in project geo by davidmoten.

the class DatabaseTest method displayQueryTimes.

private void displayQueryTimes(Connection con, long now, int length) throws SQLException {
    System.out.println("--------------------------------------");
    Coverage coverage = GeoHash.coverBoundingBox(-5, 136, -6, 138, length);
    System.out.println("numHashes=" + coverage.getHashes().size());
    StringBuilder s = new StringBuilder();
    for (String hash : coverage.getHashes()) {
        if (s.length() > 1)
            s.append(" or ");
        s.append("geohash" + hash.length() + "='" + hash + "'");
    }
    StringBuilder s2 = new StringBuilder();
    for (String hash : coverage.getHashes()) {
        if (s2.length() > 1)
            s2.append(" or ");
        s2.append("geohash12 like '" + hash + "%'");
    }
    String sql2 = "select name,lat,lon from report where time >= ? and time <?  and (" + s + ")";
    processQuery(now, con, sql2);
    String sql3 = "select name,lat,lon from report where time >= ? and time <?  and (" + s2 + ")";
    System.out.println("using like:");
    processQuery(now, con, sql3);
}

Example 2 with Coverage

use of com.github.davidmoten.geo.Coverage in project geo by davidmoten.

the class Geomem method find.

/**
 * Returns as an {@link Iterable} the results of a search within the
 * bounding box given and where start <=time < finish.
 *
 * @param topLeftLat
 *            latitude of top left point (north west)
 * @param topLeftLon
 *            longitude of top left point (north west)
 * @param bottomRightLat
 *            latitude of bottom right point (south east)
 * @param bottomRightLon
 *            longitude of bottom right point (south east)
 * @param start
 *            start time inclusive
 * @param finish
 *            finish time exclusive
 * @return info records
 */
public Iterable<Info<T, R>> find(double topLeftLat, double topLeftLon, double bottomRightLat, double bottomRightLon, long start, long finish) {
    Coverage cover = GeoHash.coverBoundingBox(topLeftLat, topLeftLon, bottomRightLat, bottomRightLon);
    Iterable<Info<T, R>> it = Collections.emptyList();
    for (String hash : cover.getHashes()) {
        it = Iterables.concat(it, find(topLeftLat, topLeftLon, bottomRightLat, bottomRightLon, start, finish, hash));
    }
    return it;
}