/// <summary>
/// Inserts an entity into table "Ts" asynchronously using Task and returns identity id.
/// </summary>
/// <typeparam name="T">The type being inserted.</typeparam>
/// <param name="connection">Open SqlConnection</param>
/// <param name="entityToInsert">Entity to insert</param>
/// <param name="transaction">The transaction to run under, null (the default) if none</param>
/// <param name="commandTimeout">Number of seconds before command execution timeout</param>
/// <param name="sqlAdapter">The specific ISqlAdapter to use, auto-detected based on connection if null</param>
/// <returns>Identity of inserted entity</returns>
public static Task <int> InsertAsync <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null,
int?commandTimeout = null, ISqlAdapter sqlAdapter = null) where T : class
{
var type = typeof(T);
sqlAdapter = sqlAdapter ?? GetFormatter(connection);
var isList = false;
if (type.IsArray)
{
isList = true;
type = type.GetElementType();
}
else if (type.IsGenericType)
{
var typeInfo = type.GetTypeInfo();
bool implementsGenericIEnumerableOrIsGenericIEnumerable =
typeInfo.ImplementedInterfaces.Any(ti => ti.IsGenericType && ti.GetGenericTypeDefinition() == typeof(IEnumerable <>)) ||
typeInfo.GetGenericTypeDefinition() == typeof(IEnumerable <>);
if (implementsGenericIEnumerableOrIsGenericIEnumerable)
{
isList = true;
type = type.GetGenericArguments()[0];
}
}
var name = GetTableName(type);
var sbColumnList = new StringBuilder(null);
var allProperties = TypePropertiesCache(type);
var keyProperties = KeyPropertiesCache(type).ToList();
var computedProperties = ComputedPropertiesCache(type);
var allPropertiesExceptKeyAndComputed = allProperties.Except(keyProperties.Union(computedProperties)).ToList();
for (var i = 0; i < allPropertiesExceptKeyAndComputed.Count; i++)
{
var property = allPropertiesExceptKeyAndComputed[i];
sqlAdapter.AppendColumnName(sbColumnList, property.Name);
if (i < allPropertiesExceptKeyAndComputed.Count - 1)
{
sbColumnList.Append(", ");
}
}
var sbParameterList = new StringBuilder(null);
for (var i = 0; i < allPropertiesExceptKeyAndComputed.Count; i++)
{
var property = allPropertiesExceptKeyAndComputed[i];
sbParameterList.AppendFormat(sqlAdapter.GetFormattedParameter("{0}"), property.Name);
if (i < allPropertiesExceptKeyAndComputed.Count - 1)
{
sbParameterList.Append(", ");
}
}
if (!isList) //single entity
{
return(sqlAdapter.InsertAsync(connection, transaction, commandTimeout, name, sbColumnList.ToString(),
sbParameterList.ToString(), keyProperties, entityToInsert));
}
//insert list of entities
var cmd = $"INSERT INTO {name} ({sbColumnList}) values ({sbParameterList})";
return(connection.ExecuteAsync(cmd, entityToInsert, transaction, commandTimeout));
}