private static async Task <bool> ExecuteDoesNameAlreadyExistsAsync(DroidName name, IDbConnection connection)
{
return(await connection.QueryFirstOrDefaultAsync <bool>(
DroidStoredProcedures.DisplayDroidByName,
new { name = (string)name },
commandType : CommandType.StoredProcedure));
}
public async Task <bool> DoesNameAlreadyExistsAsync(DroidName name)
{
using (var connection = _connectionProvider())
{
return(await ExecuteDoesNameAlreadyExistsAsync(name, connection));
}
}
private async Task <Droid> SetNameAsync(Func <DroidName, Task <bool> > nameAlreadyExistsAsync, DroidName name)
{
var existingDroidWithThisName = await nameAlreadyExistsAsync(name);
if (existingDroidWithThisName)
{
throw new DroidConflictNameException();
}
Name = name;
return(this);
}
public Task <bool> DoesNameAlreadyExistsAsync(DroidName name)
{
var doesNameAlreadyExists = _droids.Any(droid => droid.Name == name.Value);
return(Task.FromResult(doesNameAlreadyExists));
}
