/// <summary> /// Populates MySqlCommand with parameters from CRUD Query object /// Note: this code was purposely made provider specific because other providers may treat some nuances differently /// </summary> public void PopulateParameters(MySqlCommand cmd, Query query) { foreach (var par in query.Where(p => p.HasValue)) { cmd.Parameters.AddWithValue(par.Name, par.Value); } if (query.StoreKey != null) { var where = GeneratorUtils.KeyToWhere(query.StoreKey, cmd.Parameters); cmd.CommandText += "\n WHERE \n {0}".Args(where); } CRUDGenerator.ConvertParameters(Store, cmd.Parameters); }
private static async Task <int> crudDelete(MySqlDataStoreBase store, MySqlConnection cnn, MySqlTransaction trans, Doc doc, IDataStoreKey key) { var target = store.TargetName; string tableName = store.AdjustObjectNameCasing(getTableName(doc.Schema, target)); using (var cmd = cnn.CreateCommand()) { var pk = key ?? doc.GetDataStoreKey(target); if (pk == null) { throw new MySqlDataAccessException(StringConsts.KEY_UNAVAILABLE_ERROR); } var where = GeneratorUtils.KeyToWhere(pk, cmd.Parameters); cmd.Transaction = trans; if (!string.IsNullOrEmpty(where)) { cmd.CommandText = string.Format("DELETE T1 FROM `{0}` T1 WHERE {1}", tableName, where); } else { cmd.CommandText = string.Format("DELETE T1 FROM `{0}` T1", tableName); } cmd.CommandTimeout = timeoutSec(store); ConvertParameters(store, cmd.Parameters); try { var affected = await cmd.ExecuteNonQueryAsync().ConfigureAwait(false); GeneratorUtils.LogCommand(store, "delete-ok", cmd, null); return(affected); } catch (Exception error) { GeneratorUtils.LogCommand(store, "delete-error", cmd, error); throw; } }//using command }
private static int crudUpdate(MySQLDataStoreBase store, MySqlConnection cnn, MySqlTransaction trans, Doc doc, IDataStoreKey key, FieldFilterFunc filter) { var target = store.TargetName; var values = new StringBuilder(); var vparams = new List <MySqlParameter>(); var vpidx = 0; foreach (var fld in doc.Schema.FieldDefs) { var fattr = fld[target]; if (fattr == null) { continue; } var fname = fld.GetBackendNameForTarget(target); //20141008 DKh Skip update of key fields //20160124 DKh add update of keys if IDataStoreKey is present if (fattr.Key && !GeneratorUtils.HasFieldInNamedKey(fname, key)) { continue; } if (fattr.StoreFlag != StoreFlag.LoadAndStore && fattr.StoreFlag != StoreFlag.OnlyStore) { continue; } if (filter != null)//20160210 Dkh+SPol { if (!filter(doc, key, fld)) { continue; } } var fvalue = getFieldValue(doc, fld.Order, store); if (fvalue != null) { var pname = string.Format("?VAL{0}", vpidx); values.AppendFormat(" `{0}` = {1},", fname, pname); var par = new MySqlParameter(); par.ParameterName = pname; par.Value = fvalue; vparams.Add(par); vpidx++; } else { values.AppendFormat(" `{0}` = NULL,", fname); } }//foreach if (values.Length > 0) { values.Remove(values.Length - 1, 1);// remove "," } else { return(0);//nothing to do } string tableName = getTableName(doc.Schema, target); using (var cmd = cnn.CreateCommand()) { var sql = string.Empty; var pk = key ?? doc.GetDataStoreKey(target); if (pk == null) { throw new MySqlDataAccessException(StringConsts.KEY_UNAVAILABLE_ERROR); } var where = GeneratorUtils.KeyToWhere(pk, cmd.Parameters); if (!string.IsNullOrEmpty(where)) { sql = "UPDATE `{0}` T1 SET {1} WHERE {2}".Args(tableName, values, where); } else { throw new MySqlDataAccessException(StringConsts.BROAD_UPDATE_ERROR);//20141008 DKh BROAD update } cmd.Transaction = trans; cmd.CommandText = sql; cmd.Parameters.AddRange(vparams.ToArray()); ConvertParameters(store, cmd.Parameters); try { var affected = cmd.ExecuteNonQuery(); GeneratorUtils.LogCommand(store, "update-ok", cmd, null); return(affected); } catch (Exception error) { GeneratorUtils.LogCommand(store, "update-error", cmd, error); throw; } }//using command }