/// <summary>
/// WhereWithinGeoBox查询语法，查询一个矩形范围内的信息
/// </summary>
/// <param name="column">字段</param>
/// <param name="southwest">矩形左下角的坐标点</param>
/// <param name="northeast">矩形右上角的坐标点 </param>
/// <returns>返回当前对象</returns>
public BmobQuery WhereWithinGeoBox(String column, BmobGeoPoint southwest, BmobGeoPoint northeast)
{
_where.Composite(column, "$within", new Dictionary <String, object>()
{
{ "$box", BmobArrays.wrap(southwest, northeast) }
});
return(this);
}
// 为了限定搜索的最大举例范围，需要加入$maxDistanceInMiles和$maxDistanceInKilometers或者$maxDistanceInRadians参数来限定.比如要找的半径在10公里内的话
/// <summary>
/// WhereWithinDistance查询语法，查询多少公里之内的数据
/// </summary>
/// <param name="column">字段</param>
/// <param name="geo">坐标点</param>
/// <param name="maxDistanceInKilometers">最大的公里数</param>
/// <returns>返回当前对象</returns>
public BmobQuery WhereWithinDistance(String column, BmobGeoPoint geo, double maxDistanceInKilometers)
{
_where.Composite(column, "$maxDistanceInKilometers", maxDistanceInKilometers);
_where.Composite(column, "$nearSphere", geo);
return(this);
}
/// <summary>
/// WhereNear查询语法，查询最接近某一地点的数据
/// </summary>
/// <param name="column">字段（必须是GeoPoint坐标类型的字段）</param>
/// <param name="geo">坐标点</param>
/// <returns>返回当前对象</returns>
public BmobQuery WhereNear(String column, BmobGeoPoint geo)
{
_where.Composite(column, "$nearSphere", geo);
return(this);
}
