private static object getFieldValue(Doc doc, int order, MySQLDataStoreBase store)
{
var result = doc[order];
MySqlDbType?convertedDbType;
return(CLRValueToDB(store, result, out convertedDbType));
}
public static int CRUDDelete(MySQLDataStoreBase store, MySqlConnection cnn, MySqlTransaction trans, Doc doc, IDataStoreKey key)
{
try
{
return(crudDelete(store, cnn, trans, doc, key));
}
catch (Exception error)
{
throw new MySqlDataAccessException(StringConsts.CRUD_STATEMENT_EXECUTION_ERROR.Args("delete", error.ToMessageWithType(), error), error);
}
}
public static int CRUDUpsert(MySQLDataStoreBase store, MySqlConnection cnn, MySqlTransaction trans, Doc doc, FieldFilterFunc filter)
{
try
{
return(crudUpsert(store, cnn, trans, doc, filter));
}
catch (Exception error)
{
throw new MySqlDataAccessException(
StringConsts.CRUD_STATEMENT_EXECUTION_ERROR.Args("upsert", error.ToMessageWithType(), error),
error,
KeyViolationKind.Unspecified,
KeyViolationName(error));
}
}
internal static void ConvertParameters(MySQLDataStoreBase store, MySqlParameterCollection pars)
{
if (pars == null)
{
return;
}
for (var i = 0; i < pars.Count; i++)
{
var par = pars[i];
MySqlDbType?convertedDbType;
par.Value = CLRValueToDB(store, par.Value, out convertedDbType);
if (convertedDbType.HasValue)
{
par.MySqlDbType = convertedDbType.Value;
}
}
}
private static int crudDelete(MySQLDataStoreBase store, MySqlConnection cnn, MySqlTransaction trans, Doc doc, IDataStoreKey key)
{
var target = store.TargetName;
string tableName = 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);
}
ConvertParameters(store, cmd.Parameters);
try
{
var affected = cmd.ExecuteNonQuery();
GeneratorUtils.LogCommand(store, "delete-ok", cmd, null);
return(affected);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(store, "delete-error", cmd, error);
throw;
}
}//using command
}
internal static object CLRValueToDB(MySQLDataStoreBase store, object value, out MySqlDbType?convertedDbType)
{
convertedDbType = null;
if (value == null)
{
return(null);
}
if (value is GDID)
{
if (((GDID)value).IsZero)
{
return(null);
}
if (store.FullGDIDS)
{
value = (object)((GDID)value).Bytes;//be very careful with byte ordering of GDID for index optimization
convertedDbType = MySqlDbType.Binary;
}
else
{
value = (object)((GDID)value).ID;
convertedDbType = MySqlDbType.Int64;
}
}
else
if (value is bool)
{
if (store.StringBool)
{
value = (bool)value ? store.StringForTrue : store.StringForFalse;
convertedDbType = MySqlDbType.VarChar;
}
}
return(value);
}
public static void LogCommand(MySQLDataStoreBase store, string from, MySqlCommand cmd, Exception error)
{
if (store.DataLogLevel == StoreLogLevel.None)
{
return;
}
MessageType mt = store.DataLogLevel == StoreLogLevel.Debug ? MessageType.DebugSQL : MessageType.TraceSQL;
var descr = new StringBuilder(512);
descr.Append("Transaction: ");
if (cmd.Transaction == null)
{
descr.AppendLine("null");
}
else
{
descr.AppendLine(cmd.Transaction.IsolationLevel.ToString());
}
foreach (var p in cmd.Parameters.Cast <MySqlParameter>())
{
descr.AppendFormat("Parameter {0} = {1}", p.ParameterName, p.Value != null?p.Value.ToString():"null");
}
var msg = new Message
{
Type = mt,
From = from,
Topic = MySqlConsts.MYSQL_TOPIC,
Exception = error,
Text = cmd.CommandText,
Parameters = descr.ToString()
};
store.App.Log.Write(msg);
}
private static int crudUpsert(MySQLDataStoreBase store, MySqlConnection cnn, MySqlTransaction trans, Doc doc, FieldFilterFunc filter)
{
var target = store.TargetName;
var cnames = new StringBuilder();
var values = new StringBuilder();
var upserts = 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;
}
if (fattr.StoreFlag != StoreFlag.LoadAndStore && fattr.StoreFlag != StoreFlag.OnlyStore)
{
continue;
}
if (filter != null)//20160210 Dkh+SPol
{
if (!filter(doc, null, fld))
{
continue;
}
}
var fname = fld.GetBackendNameForTarget(target);
var fvalue = getFieldValue(doc, fld.Order, store);
cnames.AppendFormat(" `{0}`,", fname);
if (fvalue != null)
{
var pname = string.Format("?VAL{0}", vpidx);
values.AppendFormat(" {0},", pname);
if (!fattr.Key)
{
upserts.AppendFormat(" `{0}` = {1},", fname, pname);
}
var par = new MySqlParameter();
par.ParameterName = pname;
par.Value = fvalue;
vparams.Add(par);
vpidx++;
}
else
{
values.Append(" NULL,");
upserts.AppendFormat(" `{0}` = NULL,", fname);
}
}//foreach
if (cnames.Length > 0 && upserts.Length > 0)
{
cnames.Remove(cnames.Length - 1, 1); // remove ","
upserts.Remove(upserts.Length - 1, 1); // remove ","
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 =
@"INSERT INTO `{0}` ({1}) VALUES ({2}) ON DUPLICATE KEY UPDATE {3}".Args(tableName, cnames, values, upserts);
cmd.Transaction = trans;
cmd.CommandText = sql;
cmd.Parameters.AddRange(vparams.ToArray());
ConvertParameters(store, cmd.Parameters);
try
{
var affected = cmd.ExecuteNonQuery();
GeneratorUtils.LogCommand(store, "upsert-ok", cmd, null);
return(affected);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(store, "upsert-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
}
/// <summary>
/// Based on store settings, converts CLR value to MySQL-acceptable value, i.e. GDID -> BYTE[].
/// </summary>
public object CLRValueToDB(MySQLDataStoreBase store, object value, out MySqlDbType?convertedDbType)
{
return(CRUDGenerator.CLRValueToDB(DataStore, value, out convertedDbType));
}
public MySqlCRUDQueryExecutionContext(MySQLDataStoreBase store, MySqlConnection cnn, MySqlTransaction trans)
{
DataStore = store;
Connection = cnn;
Transaction = trans;
}
