70 lines
2.1 KiB
C#
70 lines
2.1 KiB
C#
using BeautySalonDBModels.Models;
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using Npgsql;
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namespace BeautySalonDBModels.Implements
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{
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public class ClientDB : AbstractWorkWithStorage<Client>
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{
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public override void Add(Client client)
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{
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using var conn = GetConnection();
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conn.Open();
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using var cmd = new NpgsqlCommand("INSERT INTO clients (fio, age) VALUES (@FIO, @Age)", conn);
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cmd.Parameters.AddWithValue("@FIO", client.FIO);
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cmd.Parameters.AddWithValue("@Age", client.Age);
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cmd.ExecuteNonQuery();
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}
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public override Client? GetObject(int id)
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{
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using var conn = GetConnection();
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conn.Open();
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using var cmd = new NpgsqlCommand("SELECT * FROM clients WHERE client_id = {id}", conn);
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using var reader = cmd.ExecuteReader();
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if (reader.Read())
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{
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return new Client
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{
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ClientId = reader.GetInt32(0),
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FIO = reader.GetString(1),
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Age = reader.GetInt32(2)
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};
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}
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return null;
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}
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public override List<Client> GetObjects()
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{
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var clients = new List<Client>();
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using var conn = GetConnection();
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conn.Open();
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using var cmd = new NpgsqlCommand("SELECT * FROM clients order by id", conn);
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using var reader = cmd.ExecuteReader();
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while (reader.Read())
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{
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clients.Add(new Client
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{
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ClientId = reader.GetInt32(0),
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FIO = reader.GetString(1),
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Age = reader.GetInt32(2)
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});
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}
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return clients;
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}
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public override Client? Remove(int id)
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{
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var client = GetObject(id);
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using var conn = GetConnection();
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conn.Open();
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using var cmd = new NpgsqlCommand("delete from clients where client_id = {id}", conn);
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return client;
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}
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public override void Update(Client client)
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{
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}
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}
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}
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