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Table Updates. 

Checking a table is better now.
This commit is contained in:
JacobTech 2023-08-25 12:15:28 -04:00
parent de8884aaf4
commit c36b20ac13
2 changed files with 103 additions and 9 deletions
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2
Database/ServerDatabase.csproj
View File

@ -10,7 +10,7 @@
<SymbolPackageFormat>snupkg</SymbolPackageFormat>
<PackageTags>Postgresql;sql</PackageTags>
<Title>Server Database</Title>
<Version>2.8.1</Version>
<Version>2.8.8</Version>
<LangVersion>10</LangVersion>
<Nullable>enable</Nullable>
<TargetFramework>net6.0</TargetFramework>

110
Database/Table.cs
View File

@ -36,12 +36,11 @@ public class Table<TRow> : ITable where TRow : class, new()
}
public IReadOnlyList<ITableColumn> GetMissingColumns(out IReadOnlyList<ITableColumn> UpdatedColumns)
public IReadOnlyList<ITableColumn> GetMissingColumns(out IReadOnlyList<ITableColumn> UpdatedColumns, out string[] ExtraColumns)
{
List<ITableColumn> coll = new(Colums_);
List<ITableColumn> col = new(Colums_);
List<string> co = new();
foreach (DataRow row in DatabaseHandler.CreateConnection().GetSchema("Columns", new[] { DatabaseHandler.DB, null, Name }).Rows)
{
string name = row.Field<string>("COLUMN_NAME")!,
@ -52,18 +51,29 @@ public class Table<TRow> : ITable where TRow : class, new()
col.Remove(t.First());
if (t.First()!.GetDatabaseTypeStr() == ty) coll.Remove(t.First());
}
else
{
co.Add(name);
}
}
UpdatedColumns = coll;
ExtraColumns = co.ToArray();
return col.AsReadOnly();
}
public void UpdateTable()
{
Console.WriteLine("Updating Table: {0}", Name);
IReadOnlyList<ITableColumn> m = GetMissingColumns(out IReadOnlyList<ITableColumn> n);
Console.WriteLine("Verifying Table: {0}", Name);
bool i = true;
IReadOnlyList<ITableColumn> m = GetMissingColumns(out IReadOnlyList<ITableColumn> n, out string[] o);
if (m.Any())
{
if (i)
{
i = false;
Console.WriteLine("Fixing Table: {0}", Name);
}
if (DatabaseHandler.Read<long>(
$"SELECT COUNT(table_name) FROM information_schema.tables WHERE table_schema LIKE 'public' AND table_type LIKE 'BASE TABLE' AND table_name = '{Name}';") ==
0)
@ -93,6 +103,11 @@ public class Table<TRow> : ITable where TRow : class, new()
if (n.Any())
{
if (i)
{
i = false;
Console.WriteLine("Fixing Table: {0}", Name);
}
foreach (ITableColumn col in n)
{
string sql = $"ALTER TABLE public.{Name} ALTER COLUMN {col.Name} TYPE {col.GetDatabaseTypeStr()};";
@ -112,6 +127,19 @@ public class Table<TRow> : ITable where TRow : class, new()
}
}
}
if (o.Any())
{
if (i)
{
i = false;
Console.WriteLine("Fixing Table: {0}", Name);
}
foreach (string c in o)
{
DatabaseHandler.ExecuteNonQuery($"ALTER TABLE IF EXISTS {Name} DROP COLUMN IF EXISTS {c};");
}
}
}
public Table<TRow> DropColumn<TType>(TableColumn<TType> Column) where TType : notnull
@ -173,6 +201,19 @@ public class Table<TRow> : ITable where TRow : class, new()
con.Close();
}
public void DeleteRows()
{
if (string.IsNullOrEmpty(DatabaseHandler.DB) || string.IsNullOrEmpty(DatabaseHandler.IP) || string.IsNullOrEmpty(DatabaseHandler.Uname) || string.IsNullOrEmpty(DatabaseHandler.PW)) throw new Exception("Database conection not fully defined");
using NpgsqlConnection con = new(DatabaseHandler.ConectionString);
con.Open();
using NpgsqlCommand cmd = new();
cmd.Connection = con;
cmd.CommandText = $"DELETE FROM {Name};";
cmd.Prepare();
cmd.ExecuteNonQuery();
con.Close();
}
public void Create()
{
Console.WriteLine("Making Table: {0}", Name);
@ -195,7 +236,8 @@ public class Table<TRow> : ITable where TRow : class, new()
cmd.Prepare();
cmd.ExecuteNonQuery();
con.Close();
DatabaseHandler.ExecuteNonQuery($"ALTER TABLE IF EXISTS public.{Name} OWNER to {DatabaseHandler.Uname}");
DatabaseHandler.ExecuteNonQuery($"ALTER TABLE IF EXISTS " +
$"public.{Name} OWNER to \"{DatabaseHandler.Uname}\";");
}
public bool TryRead<T>(TableColumn<T> column, Order order, [NotNullWhen(true)][MaybeNullWhen(false)]out T result, params Parameter[] Parameters) where T : notnull
@ -319,6 +361,58 @@ public class Table<TRow> : ITable where TRow : class, new()
return r;
}
public bool TryReadRows(out TRow[] rows, params Parameter[] Parameters) => TryReadRows(null!, out rows, Parameters);
public bool TryReadRows(Order order, out TRow[] rows, params Parameter[] Parameters)
{
if (string.IsNullOrEmpty(DatabaseHandler.DB) || string.IsNullOrEmpty(DatabaseHandler.IP) || string.IsNullOrEmpty(DatabaseHandler.Uname) || string.IsNullOrEmpty(DatabaseHandler.PW)) throw new Exception("Database conection not fully defined");
using NpgsqlConnection con = new(DatabaseHandler.ConectionString);
string command = $"SELECT * FROM {Name} WHERE";
con.Open();
using NpgsqlCommand cmd = new();
cmd.Connection = con;
string vals = "";
foreach (Parameter param in Parameters)
{
vals += $"{param.PGParameter.ParameterName} {param.Sign} @{param.PGParameter.ParameterName} AND ";
cmd.Parameters.Add(param.PGParameter);
}
if (command.EndsWith(";")) command = command.Remove(command.Length - 1, 1);
if (!string.IsNullOrWhiteSpace(vals)) vals = vals.Remove(vals.Length - 5, 5);
if (!string.IsNullOrWhiteSpace(vals) && command.EndsWith("WHERE")) command += $" {vals}";
if (order is not null) command += $" ORDER BY {order.Type} ";
if (order is not null && order.Assending) command += "ASC";
else { if (order is not null) command += "DESC"; }
command += ";";
cmd.CommandText = command;
NpgsqlDataReader reader = cmd.ExecuteReader();
List<TRow> Rows = new();
while (reader.Read())
{
for (int i = 0; i < reader.FieldCount; i++)
{
TRow Row = new();
string colname = reader.GetName(i);
object? val = reader.GetValue(i);
if (colnamesraw.ContainsKey(colname))
{
PropertyInfo? pi = Row.GetType()
.GetProperty(colnamesraw[colname]);
if (pi is null)
{
Console.WriteLine("Could not find row {0}", colnamesraw[colname]);
continue;
}
pi.SetValue(Row, val, null);
}
Rows.Add(Row);
}
}
rows = Rows.ToArray();
return Rows.Any();
}
public bool TryRead<T>(TableColumn<T> column, [NotNullWhen(true)][MaybeNullWhen(false)]out T result, params Parameter[] Parameters) where T : notnull
{
return TryRead(column, null!, out result, Parameters);
@ -426,9 +520,9 @@ public class Table<TRow> : ITable where TRow : class, new()
for (int j = 0; j < NumRows; j++)
{
if (!reader.Read()) break;
TRow Row = new();
for (int i = 0; i < reader.FieldCount; i++)
{
TRow Row = new();
string colname = reader.GetName(i);
object? val = reader.GetValue(i);
if (colnamesraw.ContainsKey(colname))
@ -442,8 +536,8 @@ public class Table<TRow> : ITable where TRow : class, new()
}
pi.SetValue(Row, val, null);
}
Rows.Add(Row);
}
Rows.Add(Row);
}
return Rows.ToArray();