/// <summary>
/// Validate if database exist
/// </summary>
/// <returns></returns>
protected bool DataBaseExist()
{
var sqlBuild = DataBaseTypes != DataBaseTypes.PostgreSql ? new SqlConnectionStringBuilder(ConnectionString) : null;
var npSqlBuilder = DataBaseTypes == DataBaseTypes.PostgreSql ? new NpgsqlConnectionStringBuilder(ConnectionString) : null;
var dbName = DataBaseTypes == DataBaseTypes.Mssql ? sqlBuild.InitialCatalog : sqlBuild?.DataSource;
if (string.IsNullOrEmpty(dbName) && DataBaseTypes != DataBaseTypes.PostgreSql)
{
throw new EntityException("InitialCatalog can not be null or empty");
}
if (DataBaseTypes == DataBaseTypes.PostgreSql && string.IsNullOrEmpty(npSqlBuilder.Database))
{
throw new EntityException("Database can not be null or empty");
}
if (DataBaseTypes == DataBaseTypes.Mssql)
{
sqlBuild.InitialCatalog = "master";
var tr = new DbRepository(sqlBuild.ToString(), DataBaseTypes);
var cmd = tr.GetSqlCommand($"SELECT CAST(CASE WHEN db_id(String[{dbName}]) is not null THEN 1 ELSE 0 END AS BIT)");
return(tr.ExecuteScalar(cmd).ConvertValue <bool>());
}
else if (DataBaseTypes == DataBaseTypes.Sqllight)
{
try
{
var tr = new DbRepository(sqlBuild.ToString(), DataBaseTypes);
tr.ValidateConnection();
return(true);
}
catch
{
return(false);
}
}
else
{
dbName = npSqlBuilder.Database;
npSqlBuilder.Database = "";
var tr = new DbRepository(npSqlBuilder.ToString(), DataBaseTypes);
var cmd = tr.GetSqlCommand($"SELECT CAST(CASE WHEN datname is not null THEN 1 ELSE 0 END AS BIT) from pg_database WHERE lower(datname) = lower(String[{dbName}])");
return(tr.ExecuteScalar(cmd).ConvertValue <bool>());
}
}
/// <summary>
/// Validate if database exist
/// </summary>
/// <returns></returns>
protected bool DataBaseExist()
{
var sqlBuild = new TransactionConnectionString(DataBaseTypes, ConnectionString);
if (string.IsNullOrEmpty(sqlBuild.InitialCatalog))
{
throw new EntityException("InitialCatalog, Database or DataSource can not be null or empty");
}
var dbName = sqlBuild.InitialCatalog;
if (DataBaseTypes == DataBaseTypes.Mssql)
{
sqlBuild.InitialCatalog = "";
using (var rep = new DbRepository(sqlBuild.ToString(), DataBaseTypes))
return(rep.GetSqlCommand($"SELECT CAST(CASE WHEN db_id(String[{dbName}]) is not null THEN 1 ELSE 0 END AS BIT)").ExecuteScalar().ConvertValue <bool>());
}
else if (DataBaseTypes == DataBaseTypes.Sqllight)
{
try
{
using (var rep = new DbRepository(sqlBuild.ToString(), DataBaseTypes))
rep.ValidateConnection();
return(true);
}
catch
{
return(false);
}
}
else
{
sqlBuild.InitialCatalog = "";
using (var rep = new DbRepository(sqlBuild.ToString(), DataBaseTypes))
return(rep.GetSqlCommand($"SELECT CAST(CASE WHEN datname is not null THEN 1 ELSE 0 END AS BIT) from pg_database WHERE lower(datname) = lower(String[{dbName}])").ExecuteScalar().ConvertValue <bool>());
}
}
