Browse Source

Struct für Tabellen hinzugefügt, GetLendById-Methode fertiggestellt und IdExits-Methode hinzugefügt

DatenbankJonas
Jonas Schönbach 2 years ago
parent
commit
89fcf8abd2
  1. 11
      Controllers/LendController.cs
  2. 4
      Data/IRepository.cs
  3. 59
      Data/Repository.cs
  4. 10
      Data/Tables.cs

11
Controllers/LendController.cs

@ -63,9 +63,13 @@ namespace BuecherwurmAPI.Controllers
//GET api/leihvorgang/{id}
[HttpGet("{id}")]
public ActionResult<Lend> LendById(int id)
public ActionResult<Lend> LendById(long id)
{
var lend = _repository.GetLendById(id);
if (!_repository.IdExits(Tables.Table.Lends, id))
{
return NotFound();
}
return Ok(lend);
}
@ -73,11 +77,6 @@ namespace BuecherwurmAPI.Controllers
[HttpPatch("{id}")]
public ActionResult LendPatchById(int id, JsonPatchDocument<Lend> patchDocument)
{
var lend = _repository.GetLendById(id);
if (lend == null)
{
return NotFound();
}
return Ok();
}
}

4
Data/IRepository.cs

@ -1,11 +1,13 @@
using System.Collections.Generic;
using BuecherwurmAPI.Models;
using Microsoft.EntityFrameworkCore.Metadata.Conventions;
namespace BuecherwurmAPI.Data
{
public interface IRepository
{
IEnumerable<Lend> GetAllLends();
Lend GetLendById(int id);
Lend GetLendById(long id);
bool IdExits(string table, long id);
}
}

59
Data/Repository.cs

@ -2,13 +2,14 @@ using System;
using System.Collections.Generic;
using BuecherwurmAPI.Models;
using Microsoft.Data.Sqlite;
using Microsoft.VisualBasic.CompilerServices;
namespace BuecherwurmAPI.Data
{
internal class Repository : IRepository
{
private SqliteConnection _dbConnection;
public Repository()
{
var connectionBuilder = new SqliteConnectionStringBuilder {DataSource = "LongWormMemory.db"};
@ -16,6 +17,33 @@ namespace BuecherwurmAPI.Data
_dbConnection.Open();
}
public bool IdExits(string table, long id)
{
using (var command = _dbConnection.CreateCommand())
{
var com = _dbConnection.CreateCommand();
com.Parameters.Add(new SqliteParameter("@Id", SqliteType.Integer)).Value = id;
// Certain parts of the query can't be filled with variables for security reasons.
switch (table)
{
case Tables.Table.Lends:
com.CommandText = @"SELECT EXISTS(SELECT 0 FROM Lends WHERE Id = @Id)";
break;
}
var dr = com.ExecuteReader();
long result = 0;
while (dr.Read())
{
result = (long) dr[0];
}
return result != 0;
}
}
public IEnumerable<Lend> GetAllLends()
{
var lends = new List<Lend>();
@ -28,14 +56,14 @@ namespace BuecherwurmAPI.Data
while (dataReader.Read())
{
var returned = (long) dataReader["Returned"] == 0;
var returned = (long) dataReader["Returned"] == 1;
lends.Add(new Lend
{
Id = (long) dataReader["Id"],
Customer = (string) dataReader["Customer"],
ItemId = (long) dataReader["ItemId"],
Returned = !returned,
Returned = returned,
ReturnDate = DateTime.Parse((string)dataReader["ReturnDate"])
});
}
@ -43,9 +71,30 @@ namespace BuecherwurmAPI.Data
return lends;
}
public Lend GetLendById(int id)
public Lend GetLendById(long id)
{
return new Lend{Id = 1, Customer = "Nek0", ItemId = 1337, Returned = false, ReturnDate = DateTime.Now};
using (var command = _dbConnection.CreateCommand())
{
command.Parameters.Add(new SqliteParameter("@id", SqliteType.Integer)).Value = id;
command.CommandText = @"SELECT * FROM Lends WHERE Id = @id";
var dataReader = command.ExecuteReader();
while (dataReader.Read())
{
var returned = (long) dataReader["Returned"] == 1;
var lend = new Lend
{
Id = (long) dataReader["Id"],
Customer = (string) dataReader["Customer"],
ItemId = (long) dataReader["ItemId"],
Returned = returned,
ReturnDate = DateTime.Parse((string) dataReader["ReturnDate"])
};
return lend;
}
}
return null;
}
}
}

10
Data/Tables.cs

@ -0,0 +1,10 @@
namespace BuecherwurmAPI.Data
{
public static class Tables
{
public struct Table
{
public const string Lends = "Lends";
}
}
}
Loading…
Cancel
Save