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full database

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Дмитрий Блохин 2024-05-14 17:48:22 +04:00
parent 88c963f159
commit e1a8670392
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52
SUBD_LABA/Database/Abstracts.cs Normal file
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using Database;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Commentbase
{
public abstract class Abstracts
{
public abstract void CreateAlbum(Album album);
public abstract void UpdateAlbum(Album album);
public abstract void DeleteAlbum(int id);
public abstract Album GetAlbum(int id);
public abstract Album GetAlbum(string title);
public abstract List<Album> GetAlbums();
public abstract void DeleteAllAlbums();
public abstract void CreateLocation(Location location);
public abstract void UpdateLocation(Location location);
public abstract void DeleteLocation(int id);
public abstract Location GetLocation(int id);
public abstract Location GetLocation(string name);
public abstract List<Location> GetLocations();
public abstract void DeleteAllLocations();
public abstract void CreatePhoto(Photo photo);
public abstract void UpdatePhoto(Photo photo);
public abstract void DeletePhoto(int id);
public abstract Photo GetPhoto(int id);
public abstract Photo GetPhoto(int AlbumId, int LocationId, int AuthorId);
public abstract List<Photo> GetPhotos();
public abstract void DeleteAllPhotos();
public abstract void CreateAuthor(Author author);
public abstract void UpdateAuthor(Author author);
public abstract void DeleteAuthor(int id);
public abstract Author GetAuthor(int id);
public abstract Author GetAuthor(string name);
public abstract List<Author> GetAuthors();
public abstract void DeleteAllAuthors();
public abstract void CreateComment(Comment comment);
public abstract void UpdateComment(Comment comment);
public abstract void DeleteComment(int id);
public abstract Comment GetComment(int id);
public abstract Comment GetCommentPhoto(int PhotoId);
public abstract List<Comment> GetComments();
public abstract void DeleteAllComments();
}
}

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SUBD_LABA/Database/Database.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Npgsql" Version="8.0.3" />
</ItemGroup>
</Project>

523
SUBD_LABA/Database/Implements.cs Normal file
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using Commentbase;
using Npgsql;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Database
{
public class Implements : Abstracts
{
private NpgsqlConnection GetConnect()
{
return new NpgsqlConnection("Host=192.168.56.101;Username=postgres;Password=postgres;Database=calendar");
}
public override void CreateAlbum(Album album)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("INSERT INTO Album (Title, Description) " +
"VALUES (@Title, @Description)", conn);
cmd.Parameters.AddWithValue("@Title", album.Title);
cmd.Parameters.AddWithValue("@Description", album.Description);
cmd.ExecuteNonQuery();
}
public override void UpdateAlbum(Album album)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"UPDATE Album SET Title = @Title, Description = @Description WHERE id = @Id", conn);
cmd.Parameters.AddWithValue("@Title", album.Title);
cmd.Parameters.AddWithValue("@Description", album.Description);
cmd.Parameters.AddWithValue("@Id", album.Id);
cmd.ExecuteNonQuery();
}
public override void DeleteAlbum(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Album WHERE id = @Id", conn);
cmd.Parameters.AddWithValue("@Id", id);
cmd.ExecuteNonQuery();
}
public override Album GetAlbum(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Album WHERE id = {id}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Album
{
Id = reader.GetInt32(0),
Title = reader.GetString(1),
Description = reader.GetString(2),
};
}
return null;
}
public override Album GetAlbum(string title)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Album WHERE Title = {title}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Album
{
Id = reader.GetInt32(0),
Title = reader.GetString(1),
Description = reader.GetString(2),
};
}
return null;
}
public override List<Album> GetAlbums()
{
List<Album> albums = new List<Album>();
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("SELECT * FROM Album", conn);
using var reader = cmd.ExecuteReader();
while (reader.Read())
{
albums.Add(new Album
{
Id = reader.GetInt32(0),
Title = reader.GetString(1),
Description = reader.GetString(2),
});
}
return albums;
}
public override void DeleteAllAlbums()
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Album", conn);
cmd.ExecuteNonQuery();
}
public override void CreateLocation(Location location)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("INSERT INTO Location (Name, Shortname) " +
"VALUES (@Name, @Shortname)", conn);
cmd.Parameters.AddWithValue("@Name", location.Name);
cmd.Parameters.AddWithValue("@Shortname", location.ShortName);
cmd.ExecuteNonQuery();
}
public override void UpdateLocation(Location location)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("UPDATE Location SET Name = @Name, ShortName = @Shortname WHERE Id = @Id", conn);
cmd.Parameters.AddWithValue("@Name", location.Name);
cmd.Parameters.AddWithValue("@Shortname", location.ShortName);
cmd.ExecuteNonQuery();
}
public override void DeleteLocation(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Location WHERE id = @Id", conn);
cmd.Parameters.AddWithValue("@Id", id);
cmd.ExecuteNonQuery();
}
public override Location GetLocation(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Location WHERE id = {id}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Location
{
Id = reader.GetInt32(0),
Name = reader.GetString(1),
ShortName = reader.GetString(2),
};
}
return null;
}
public override Location GetLocation(string name)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Location WHERE Name = {name}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Location
{
Id = reader.GetInt32(0),
Name = reader.GetString(1),
ShortName = reader.GetString(2),
};
}
return null;
}
public override List<Location> GetLocations()
{
List<Location> locations = new List<Location>();
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("SELECT * FROM Location", conn);
using var reader = cmd.ExecuteReader();
while (reader.Read())
{
locations.Add(new Location
{
Id = reader.GetInt32(0),
Name = reader.GetString(1),
ShortName = reader.GetString(2),
});
}
return locations;
}
public override void DeleteAllLocations()
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Location", conn);
cmd.ExecuteNonQuery();
}
public override void CreatePhoto(Photo photo)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("INSERT INTO Photo (Title, Description, Privacy, UploadDate, ImagePath, AlbumId, LocationId, AuthorId) " +
"VALUES (@Title, @Description, @Privacy, @UploadDate, @ImagePath, @Album, @Location, @Author)", conn);
cmd.Parameters.AddWithValue("@Title", photo.Title);
cmd.Parameters.AddWithValue("@Description", photo.Description);
cmd.Parameters.AddWithValue("@Privacy", photo.Privacy);
cmd.Parameters.AddWithValue("@UploadDate", photo.UploadDate);
cmd.Parameters.AddWithValue("@ImagePath", photo.ImagePath);
cmd.Parameters.AddWithValue("@Album", photo.AlbumId);
cmd.Parameters.AddWithValue("@Location", photo.LocationId);
cmd.Parameters.AddWithValue("@Author", photo.AuthorId);
cmd.ExecuteNonQuery();
}
public override void UpdatePhoto(Photo photo)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("UPDATE Photo SET Title = @Title, Description = @Description, Privacy = @Privacy, UploadDate = @UploadDate, ImagePath = @ImagePath, AlbumId = @Album, LocationId = @Location, AuthorId = @Author", conn);
cmd.Parameters.AddWithValue("@Title", photo.Title);
cmd.Parameters.AddWithValue("@Description", photo.Description);
cmd.Parameters.AddWithValue("@Privacy", photo.Privacy);
cmd.Parameters.AddWithValue("@UploadDate", photo.UploadDate);
cmd.Parameters.AddWithValue("@ImagePath", photo.ImagePath);
cmd.Parameters.AddWithValue("@Album", photo.AlbumId);
cmd.Parameters.AddWithValue("@Location", photo.LocationId);
cmd.Parameters.AddWithValue("@Author", photo.AuthorId);
cmd.ExecuteNonQuery();
}
public override void DeletePhoto(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Photo WHERE id = @Id", conn);
cmd.Parameters.AddWithValue("@Id", id);
cmd.ExecuteNonQuery();
}
public override Photo GetPhoto(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Photo WHERE id = {id}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Photo
{
Id = reader.GetInt32(0),
Title = reader.GetString(1),
Description = reader.GetString(2),
Privacy = reader.GetString(3),
UploadDate = reader.GetDateTime(4),
ImagePath = reader.GetString(5),
AlbumId = reader.GetInt32(6),
LocationId = reader.GetInt32(7),
AuthorId = reader.GetInt32(8)
};
}
return null;
}
public override Photo GetPhoto(int AlbumId, int LocationId, int AuthorId)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Photo WHERE (AlbumId = {AlbumId} AND LocationId = {LocationId} AND AuthorId = {AuthorId})", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Photo
{
Id = reader.GetInt32(0),
Title = reader.GetString(1),
Description = reader.GetString(2),
Privacy = reader.GetString(3),
UploadDate = reader.GetDateTime(4),
ImagePath = reader.GetString(5),
AlbumId=reader.GetInt32(6),
LocationId = reader.GetInt32(7),
AuthorId = reader.GetInt32(8)
};
}
return null;
}
public override List<Photo> GetPhotos()
{
List<Photo> photos = new List<Photo>();
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("SELECT * FROM Photo", conn);
using var reader = cmd.ExecuteReader();
while (reader.Read())
{
photos.Add(new Photo
{
Id = reader.GetInt32(0),
Title = reader.GetString(1),
Description = reader.GetString(2),
Privacy = reader.GetString(3),
UploadDate = reader.GetDateTime(4),
ImagePath = reader.GetString(5),
AlbumId = reader.GetInt32(6),
LocationId = reader.GetInt32(7),
AuthorId = reader.GetInt32(8)
});
}
return photos;
}
public override void DeleteAllPhotos()
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Photo", conn);
cmd.ExecuteNonQuery();
}
public override void CreateAuthor(Author author)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("INSERT INTO Author (Name, PhoneNum, Email) " +
"VALUES (@Name, @PhoneNum, @Email)", conn);
cmd.Parameters.AddWithValue("@Name", author.Name);
cmd.Parameters.AddWithValue("@PhoneNum", author.PhoneNum);
cmd.Parameters.AddWithValue("@Email", author.Email);
cmd.ExecuteNonQuery();
}
public override void UpdateAuthor(Author author)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("UPDATE Author SET Name = @Name, PhoneNum = @PhoneNum, Email = @Email", conn);
cmd.Parameters.AddWithValue("@Name", author.Name);
cmd.Parameters.AddWithValue("@PhoneNum", author.PhoneNum);
cmd.Parameters.AddWithValue("@Email", author.Email);
cmd.ExecuteNonQuery();
}
public override void DeleteAuthor(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Author WHERE id = @Id", conn);
cmd.Parameters.AddWithValue("@Id", id);
cmd.ExecuteNonQuery();
}
public override Author GetAuthor(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Author WHERE id = {id}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Author
{
Id = reader.GetInt32(0),
Name = reader.GetString(1),
PhoneNum = reader.GetString(2),
Email = reader.GetString(3)
};
}
return null;
}
public override Author GetAuthor(string name)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Author WHERE Name = {name}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Author
{
Id = reader.GetInt32(0),
Name = reader.GetString(1),
PhoneNum = reader.GetString(2),
Email = reader.GetString(3)
};
}
return null;
}
public override List<Author> GetAuthors()
{
List<Author> authors = new List<Author>();
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("SELECT * FROM Author", conn);
using var reader = cmd.ExecuteReader();
while (reader.Read())
{
authors.Add(new Author
{
Id = reader.GetInt32(0),
Name = reader.GetString(1),
PhoneNum = reader.GetString(2),
Email = reader.GetString(3)
});
}
return authors;
}
public override void DeleteAllAuthors()
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Author", conn);
cmd.ExecuteNonQuery();
}
public override void CreateComment(Comment comment)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("INSERT INTO Comment (PostDate, Content, PhotoId) " +
"VALUES (@PostDate, @Content, @Photo)", conn);
cmd.Parameters.AddWithValue("@PostDate", comment.PostDate);
cmd.Parameters.AddWithValue("@Content", comment.Content);
cmd.Parameters.AddWithValue("@Photo", comment.PhotoId);
cmd.ExecuteNonQuery();
}
public override void UpdateComment(Comment comment)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("UPDATE Comment SET PostDate = @PostDate, Content = @Content, PhotoId = @Photo", conn);
cmd.Parameters.AddWithValue("@PostDate", comment.PostDate);
cmd.Parameters.AddWithValue("@Content", comment.Content);
cmd.Parameters.AddWithValue("@Photo", comment.PhotoId);
cmd.ExecuteNonQuery();
}
public override void DeleteComment(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Comment WHERE id = @Id", conn);
cmd.Parameters.AddWithValue("@Id", id);
cmd.ExecuteNonQuery();
}
public override Comment GetComment(int id)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Comment WHERE id = {id}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Comment
{
Id = reader.GetInt32(0),
PostDate = reader.GetDateTime(1),
Content = reader.GetString(2),
PhotoId = reader.GetInt32(3)
};
}
return null;
}
public override Comment GetCommentPhoto(int PhotoId)
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"SELECT * FROM Comment WHERE PhotoId = {PhotoId}", conn);
using var reader = cmd.ExecuteReader();
if (reader.Read())
{
return new Comment
{
Id = reader.GetInt32(0),
PostDate = reader.GetDateTime(1),
Content = reader.GetString(2),
PhotoId = reader.GetInt32(3)
};
}
return null;
}
public override List<Comment> GetComments()
{
List<Comment> comments = new List<Comment>();
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand("SELECT * FROM Comment", conn);
using var reader = cmd.ExecuteReader();
while (reader.Read())
{
comments.Add(new Comment
{
Id = reader.GetInt32(0),
PostDate = reader.GetDateTime(1),
Content = reader.GetString(2),
PhotoId = reader.GetInt32(3)
});
}
return comments;
}
public override void DeleteAllComments()
{
using var conn = GetConnect();
conn.Open();
using var cmd = new NpgsqlCommand($"DELETE FROM Comment", conn);
cmd.ExecuteNonQuery();
}
}
}

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SUBD_LABA/Database/Models.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Database
{
public class Album
{
public int Id { get; set; }
public string Title { get; set; }
public string Description { get; set; }
}
public class Location
{
public int Id { get; set; }
public string Name { get; set; }
public string ShortName { get; set; }
}
public class Author
{
public int Id { get; set; }
public string Name { get; set; }
public string PhoneNum { get; set; }
public string Email { get; set; }
}
public class Photo
{
public int Id { get; set; }
public string Title { get; set; }
public string Description { get; set; }
public string Privacy { get; set; }
public DateTime UploadDate { get; set; }
public string ImagePath { get; set; }
public int AlbumId { get; set; }
public int LocationId { get; set; }
public int AuthorId { get; set; }
}
public class Comment
{
public int Id { get; set; }
public DateTime PostDate { get; set; }
public string Content { get; set; }
public int PhotoId { get; set; }
}
}

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SUBD_LABA/SUBD_LAB.sln Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.6.33801.468
MinimumVisualStudioVersion = 10.0.40219.1
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Database", "Database\Database.csproj", "{7D559A78-17F8-4ADB-BA91-30D71CE60CC6}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{7D559A78-17F8-4ADB-BA91-30D71CE60CC6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{7D559A78-17F8-4ADB-BA91-30D71CE60CC6}.Debug|Any CPU.Build.0 = Debug|Any CPU
{7D559A78-17F8-4ADB-BA91-30D71CE60CC6}.Release|Any CPU.ActiveCfg = Release|Any CPU
{7D559A78-17F8-4ADB-BA91-30D71CE60CC6}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {21800503-431A-49CE-A6F1-523F96E07432}
EndGlobalSection
EndGlobal