protected Session createSystemSession(User user, int id) {
return new Session(this, user, id);
}
protected void openMetaTable(boolean create) {
CreateTableData data = new CreateTableData();
ArrayList<Column> cols = data.columns;
Column columnId = new Column("ID", Value.INT);
columnId.setNullable(false);
cols.add(columnId);
cols.add(new Column("HEAD", Value.INT));