query 2.2.0

Search query parser to implement customized search. Supports boolean groups, field scopes, ranges, comparisons...

Search query parser library

The library helps to parse search queries (e.g. custom search boxes) and enables custom search index implementations.

Supported expressions:

• (Implicit) boolean AND: a AND b or a b
• boolean OR: a OR b OR c
• boolean NOT: -a or NOT a
• group query: (a b) OR (c d)
• text match: abc or "words in close proximity"
• range query: [1 TO 20] (inclusive), ]aaa TO dzz[ (exclusive), or [1 TO 20[ (mixed)
• scopes: field:(a b) or field:abc
• field comparison: year < 2000

Usage

A simple usage example:

import 'package:query/query.dart';

main() {
  final q = parseQuery('some text OR field:another');
  // prints "(some (text OR field:another))"
  print(q);
}