/// <summary>
/// Internal add column routine
/// </summary>
internal async Task <(SyncContext context, bool dropped)> InternalDropColumnAsync(IScopeInfo scopeInfo, SyncContext context, string droppedColumnName, DbTableBuilder tableBuilder, DbConnection connection, DbTransaction transaction, CancellationToken cancellationToken, IProgress <ProgressArgs> progress)
{
if (tableBuilder.TableDescription.Columns.Count <= 0)
{
throw new MissingsColumnException(tableBuilder.TableDescription.GetFullName());
}
if (tableBuilder.TableDescription.PrimaryKeys.Count <= 0)
{
throw new MissingPrimaryKeyException(tableBuilder.TableDescription.GetFullName());
}
using var command = await tableBuilder.GetDropColumnCommandAsync(droppedColumnName, connection, transaction).ConfigureAwait(false);
if (command == null)
{
return(context, false);
}
var(tableName, _) = this.Provider.GetParsers(tableBuilder.TableDescription, scopeInfo.Setup);
var action = await this.InterceptAsync(new ColumnDroppingArgs(context, droppedColumnName, tableBuilder.TableDescription, tableName, command, connection, transaction), progress, cancellationToken).ConfigureAwait(false);
if (action.Cancel || action.Command == null)
{
return(context, false);
}
await this.InterceptAsync(new DbCommandArgs(context, action.Command, connection, transaction), progress, cancellationToken).ConfigureAwait(false);
await action.Command.ExecuteNonQueryAsync().ConfigureAwait(false);
await this.InterceptAsync(new ColumnDroppedArgs(context, droppedColumnName, tableBuilder.TableDescription, tableName, connection, transaction), progress, cancellationToken).ConfigureAwait(false);
action.Command.Dispose();
return(context, true);
}
