public Product GetNearest(string productName, double lat, double lon, int skip = 0, int take = 10)
{
var result = _client.Cypher.Match("(p:Product)-[r: ContainedIn]->(s:Shop)")
.Where <ORMProduct>(p => p.Name == productName)
.Return((p, s, r) => new
{
Product = p.As <ORMProduct>(),
Cont = r.As <ORMContainedIn>(),
Shop = s.As <ORMShop>(),
Dist = Return.As <double>("distance(point({ latitude: toFloat(s.Latitude), longitude: toFloat(s.Longitude)}),point({ latitude: " +
lat + ", longitude: " + lon + "}))")
}).OrderBy("Dist").Skip(skip).Limit(take).Results;
ORMProduct pr = result.First().Product;
Product product = new Product()
{
Id = pr.Id,
Name = pr.Name,
Shops = new Dictionary <Shop, ContainedIn>()
};
foreach (var res in result)
{
product.Shops.Add(res.Shop.ToShop(), res.Cont.ToContainedIn());
}
return(product);
}
public Product GetCheapestInCity(string productName, string cityName, int skip, int take)
{
var result = _client.Cypher.Match("(p:Product)-[r:ContainedIn]->(s:Shop)-[l:LocatedAt]->(c:City)")
.Where <ORMProduct>(p => p.Name == productName)
.AndWhere <ORMCity>(c => c.Name == cityName)
.Return((p, r, s) => new
{
Product = p.As <ORMProduct>(),
Cont = r.As <ORMContainedIn>(),
Shop = s.As <ORMShop>()
}).OrderBy("Cont.Price").Skip(skip).Limit(take).Results;
ORMProduct pr = result.First().Product;
Product product = new Product()
{
Id = pr.Id,
Name = pr.Name,
Shops = new Dictionary <Shop, ContainedIn>()
};
foreach (var res in result)
{
product.Shops.Add(res.Shop.ToShop(), res.Cont.ToContainedIn());
}
return(product);
}
public static Product ToProduct(this ORMProduct ormProduct)
{
return(new Product()
{
Id = ormProduct.Id,
Measure = ormProduct.Measure,
Name = ormProduct.Name
});
}
public bool Insert(Product entity)
{
ORMProduct product = entity.ToORMProduct();
_client.Cypher
.Merge("(p:Product {product})")
.WithParam("product", product)
.ExecuteWithoutResults();
return(true);
}
private Product GetByCriteria(Expression <Func <ORMProduct, bool> > criteria)
{
var result = _client.Cypher.Match("(p:Product)-[r:ContainedIn]->(s:Shop)")
.Where(criteria)
.Return((p, r, s) => new
{
Products = p.CollectAs <ORMProduct>(),
Cont = r.CollectAs <ORMContainedIn>(),
Shops = s.CollectAs <ORMShop>()
}).Results.FirstOrDefault();
ORMProduct pr = result.Products.FirstOrDefault();
return(FillDalProduct(pr, result.Shops.ToList(), result.Cont.ToList()));
}
//public Dictionary<Shop, double> GetOpt(string productName1, string productName2, string cityName)
//{
// var result = _client.Cypher.Match($"(p1:Product {{Name: \"{productName1}\"}})-[l:ContainedIn]->(s:Shop)<-[r:ContainedIn]-(p2:Product {{Name: \"{productName2}\"}}), (c:City {{Name:\"{cityName}\"}})")
// .Where("(s)-[:LocatedAt]->(c)")
// .Return((s, l, r) => new
// {
// Shop = s.As<Shop>(),
// Sum = Return.As<double>("l.Price + r.Price")
// }).OrderBy("Sum").Results;
// Dictionary<Shop, double> dict = new Dictionary<Shop, double>();
// foreach (var res in result)
// {
// dict.Add(res.Shop.ToShop(), res.Sum);
// }
// return dict;
//}
private Product FillDalProduct(ORMProduct pr, List <ORMShop> shops, List <ORMContainedIn> links)
{
Product product = new Product()
{
Id = pr.Id,
Measure = pr.Measure,
Name = pr.Name
};
for (int i = 0; i < links.Count; i++)
{
product.Shops.Add(shops[i].ToShop(), links[i].ToContainedIn());
}
return(product);
}
