80 lines
2.7 KiB
C#
80 lines
2.7 KiB
C#
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using BeautySalonDBModels.Models;
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using Npgsql;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace BeautySalonDBModels.Implements
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{
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public class MasterDB : AbstractWorkWithStorage<Master>
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{
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public override void Add(Master master)
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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 masters (specialisation_id, fio) VALUES (@SpecialisationId, @FIO)", conn);
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cmd.Parameters.AddWithValue("@SpecialisationId", master.SpecialisationId);
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cmd.Parameters.AddWithValue("@FIO", master.FIO);
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cmd.ExecuteNonQuery();
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}
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public override Master? 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 masters WHERE master_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 Master
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{
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MasterId = reader.GetInt32(0),
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SpecialisationId = reader.GetInt32(1),
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FIO = reader.GetString(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<Master> GetObjects()
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{
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var masters = new List<Master>();
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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 masters order by master_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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masters.Add(new Master
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{
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MasterId = reader.GetInt32(0),
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SpecialisationId = reader.GetInt32(1),
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FIO = reader.GetString(2)
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});
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}
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return masters;
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}
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public override Master? Remove(int id)
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{
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var master = 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 masters where master_id = {id}", conn);
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cmd.ExecuteNonQuery();
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return master;
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}
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public override void Update(Master master)
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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("update master set specialisation_id = {master.SpecialisationId}, " +
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"fio = {master.FIO} where master_id = {master.MasterId}", conn);
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cmd.ExecuteNonQuery();
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}
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}
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}
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