private string CreateUpdateUntrackedRowsCommand()
{
var stringBuilder = new StringBuilder();
var str1 = new StringBuilder();
var str2 = new StringBuilder();
var str3 = new StringBuilder();
var str4 = MySqlManagementUtils.JoinTwoTablesOnClause(this.TableDescription.GetPrimaryKeysColumns(), "`side`", "`base`");
stringBuilder.AppendLine($"INSERT INTO {trackingName.Schema().Quoted().ToString()} (");
var comma = "";
foreach (var pkeyColumn in TableDescription.GetPrimaryKeysColumns())
{
var pkeyColumnName = ParserName.Parse(pkeyColumn, "`").Quoted().ToString();
str1.Append($"{comma}{pkeyColumnName}");
str2.Append($"{comma}`base`.{pkeyColumnName}");
str3.Append($"{comma}`side`.{pkeyColumnName}");
comma = ", ";
}
stringBuilder.Append(str1.ToString());
stringBuilder.AppendLine($", `update_scope_id`, `sync_row_is_tombstone`, `timestamp`, `last_change_datetime`");
stringBuilder.AppendLine($")");
stringBuilder.Append($"SELECT ");
stringBuilder.Append(str2.ToString());
stringBuilder.AppendLine($", NULL, 0, {TimestampValue}, now()");
stringBuilder.AppendLine($"FROM {tableName.Schema().Quoted().ToString()} as `base` WHERE NOT EXISTS");
stringBuilder.Append($"(SELECT ");
stringBuilder.Append(str3.ToString());
stringBuilder.AppendLine($" FROM {trackingName.Schema().Quoted().ToString()} as `side` ");
stringBuilder.AppendLine($"WHERE {str4})");
var r = stringBuilder.ToString();
return(r);
}
public DbCommand CreateUpdateTriggerCommand(DbConnection connection, DbTransaction transaction)
{
var updTriggerName = string.Format(this.mySqlObjectNames.GetTriggerCommandName(DbTriggerType.Update), tableName.Unquoted().Normalized().ToString());
StringBuilder createTrigger = new StringBuilder();
createTrigger.AppendLine($"CREATE TRIGGER {updTriggerName} AFTER UPDATE ON {tableName.Quoted().ToString()} FOR EACH ROW ");
createTrigger.AppendLine();
createTrigger.AppendLine();
createTrigger.AppendLine($"Begin ");
createTrigger.AppendLine($"\tUPDATE {trackingName.Quoted().ToString()} ");
createTrigger.AppendLine("\tSET `update_scope_id` = NULL ");
createTrigger.AppendLine($"\t\t,`timestamp` = {this.timestampValue}");
createTrigger.AppendLine("\t\t,`last_change_datetime` = utc_timestamp()");
createTrigger.Append($"\tWhere ");
createTrigger.Append(MySqlManagementUtils.JoinTwoTablesOnClause(this.tableDescription.GetPrimaryKeysColumns(), trackingName.Quoted().ToString(), "new"));
//if (this.tableDescription.GetMutableColumns().Count() > 0)
//{
// createTrigger.AppendLine();
// createTrigger.AppendLine("\t AND (");
// string or = " ";
// foreach (var column in this.tableDescription.GetMutableColumns())
// {
// var quotedColumn = ParserName.Parse(column, "`").Quoted().ToString();
// createTrigger.Append("\t");
// createTrigger.Append(or);
// createTrigger.Append("IFNULL(");
// createTrigger.Append("NULLIF(");
// createTrigger.Append("`old`.");
// createTrigger.Append(quotedColumn);
// createTrigger.Append(", ");
// createTrigger.Append("`new`.");
// createTrigger.Append(quotedColumn);
// createTrigger.Append(")");
// createTrigger.Append(", ");
// createTrigger.Append("NULLIF(");
// createTrigger.Append("`new`.");
// createTrigger.Append(quotedColumn);
// createTrigger.Append(", ");
// createTrigger.Append("`old`.");
// createTrigger.Append(quotedColumn);
// createTrigger.Append(")");
// createTrigger.AppendLine(") IS NOT NULL");
// or = " OR ";
// }
// createTrigger.AppendLine("\t ) ");
//}
createTrigger.AppendLine($"; ");
createTrigger.AppendLine("IF (SELECT ROW_COUNT() = 0) THEN ");
createTrigger.AppendLine($"\tINSERT INTO {trackingName.Quoted().ToString()} (");
StringBuilder stringBuilderArguments = new StringBuilder();
StringBuilder stringBuilderArguments2 = new StringBuilder();
StringBuilder stringPkAreNull = new StringBuilder();
string argComma = string.Empty;
string argAnd = string.Empty;
foreach (var mutableColumn in this.tableDescription.GetPrimaryKeysColumns().Where(c => !c.IsReadOnly))
{
var columnName = ParserName.Parse(mutableColumn, "`").Quoted().ToString();
stringBuilderArguments.AppendLine($"\t\t{argComma}{columnName}");
stringBuilderArguments2.AppendLine($"\t\t{argComma}new.{columnName}");
stringPkAreNull.Append($"{argAnd}{trackingName.Quoted().ToString()}.{columnName} IS NULL");
argComma = ",";
argAnd = " AND ";
}
createTrigger.Append(stringBuilderArguments.ToString());
createTrigger.AppendLine("\t\t,`update_scope_id`");
createTrigger.AppendLine("\t\t,`timestamp`");
createTrigger.AppendLine("\t\t,`sync_row_is_tombstone`");
createTrigger.AppendLine("\t\t,`last_change_datetime`");
var filterColumnsString = new StringBuilder();
var filterColumnsString2 = new StringBuilder();
var filterColumnsString3 = new StringBuilder();
createTrigger.AppendLine("\t) ");
createTrigger.AppendLine("\tSELECT ");
createTrigger.Append(stringBuilderArguments2.ToString());
createTrigger.AppendLine("\t\t,NULL");
createTrigger.AppendLine($"\t\t,{this.timestampValue}");
createTrigger.AppendLine("\t\t,0");
createTrigger.AppendLine("\t\t,utc_timestamp()");
createTrigger.AppendLine($"\tFROM {tableName.Quoted().ToString()}"); //[AB] added to be compatible with MariaDB 10.3.x
//if (this.tableDescription.GetMutableColumns().Count() > 0)
//{
// createTrigger.AppendLine();
// createTrigger.AppendLine("\t WHERE (");
// string or = " ";
// foreach (var column in this.tableDescription.GetMutableColumns())
// {
// var quotedColumn = ParserName.Parse(column, "`").Quoted().ToString();
// createTrigger.Append("\t");
// createTrigger.Append(or);
// createTrigger.Append("IFNULL(");
// createTrigger.Append("NULLIF(");
// createTrigger.Append("`old`.");
// createTrigger.Append(quotedColumn);
// createTrigger.Append(", ");
// createTrigger.Append("`new`.");
// createTrigger.Append(quotedColumn);
// createTrigger.Append(")");
// createTrigger.Append(", ");
// createTrigger.Append("NULLIF(");
// createTrigger.Append("`new`.");
// createTrigger.Append(quotedColumn);
// createTrigger.Append(", ");
// createTrigger.Append("`old`.");
// createTrigger.Append(quotedColumn);
// createTrigger.Append(")");
// createTrigger.AppendLine(") IS NOT NULL");
// or = " OR ";
// }
// createTrigger.AppendLine("\t ) ");
//}
createTrigger.AppendLine("ON DUPLICATE KEY UPDATE");
createTrigger.AppendLine("\t`update_scope_id` = NULL, ");
createTrigger.AppendLine("\t`sync_row_is_tombstone` = 0, ");
createTrigger.AppendLine($"\t`timestamp` = {this.timestampValue}, ");
createTrigger.AppendLine("\t`last_change_datetime` = utc_timestamp()");
createTrigger.AppendLine(";");
createTrigger.AppendLine("END IF;");
createTrigger.AppendLine($"End; ");
var command = connection.CreateCommand();
command.Connection = connection;
command.Transaction = transaction;
command.CommandText = createTrigger.ToString();
return(command);
}