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using System.Data;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Migrations;
using Microsoft.EntityFrameworkCore.Migrations.Operations;
using Microsoft.EntityFrameworkCore.Migrations.Operations.Builders;
using MySql.Data.MySqlClient;
using MySql.EntityFrameworkCore.Metadata;
using Oqtane.Databases;
using Oqtane.Shared;
namespace Oqtane.Database.MySQL
{
public class MySQLDatabase : DatabaseBase
{
private static string _friendlyName => "MySQL";
private static string _name => "MySQL";
static MySQLDatabase()
{
Initialize(typeof(MySQLDatabase));
}
public MySQLDatabase() :base(_name, _friendlyName) { }
public override string Provider => "MySql.EntityFrameworkCore";
public override OperationBuilder<AddColumnOperation> AddAutoIncrementColumn(ColumnsBuilder table, string name)
{
return table.Column<int>(name: name, nullable: false).Annotation("MySQL:ValueGenerationStrategy", MySQLValueGenerationStrategy.IdentityColumn);
}
public override string ConcatenateSql(params string[] values)
{
var returnValue = "CONCAT(";
for (var i = 0; i < values.Length; i++)
{
if (i > 0)
{
returnValue += ",";
}
returnValue += values[i];
}
returnValue += ")";
return returnValue;
}
public override int ExecuteNonQuery(string connectionString, string query)
{
var conn = new MySqlConnection(connectionString);
var cmd = conn.CreateCommand();
using (conn)
{
PrepareCommand(conn, cmd, query);
var val = -1;
try
{
val = cmd.ExecuteNonQuery();
}
catch
{
// an error occurred executing the query
}
return val;
}
}
public override IDataReader ExecuteReader(string connectionString, string query)
{
var conn = new MySqlConnection(connectionString);
var cmd = conn.CreateCommand();
PrepareCommand(conn, cmd, query);
var dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return dr;
}
public override DbContextOptionsBuilder UseDatabase(DbContextOptionsBuilder optionsBuilder, string connectionString)
{
return optionsBuilder.UseMySQL(connectionString);
}
private void PrepareCommand(MySqlConnection conn, MySqlCommand cmd, string query)
{
if (conn.State != ConnectionState.Open)
{
conn.Open();
}
cmd.Connection = conn;
cmd.CommandText = query;
cmd.CommandType = CommandType.Text;
}
}
}