makeWhere method
Make the where condition.
Implementation
@override
String makeWhere() {
final sb = StringBuffer();
for (final item in _whereItemList) {
if (sb.isNotEmpty) {
sb.write(' ${item.logicalType == LogicalType.and ? 'AND' : 'OR'} ');
}
sb.write(item.text);
}
return sb.toString();
}