or method

SelectorBuilder or(
  1. SelectorBuilder other
)

Combine current expression with expression in parameter by logical operator OR. See MongoDB doc For example inventory.find(where.eq('price', 1.99).and(where.lt('qty',20).or(where.eq('sale', true))));

This query will select all documents in the inventory collection where:

  • the price field value equals 1.99 and
  • either the qty field value is less than 20 or the sale field value is true MongoDB json query from this expression would be {'$query': {'$and': [{'price':1.99}, {'$or': {'qty': {'\$lt': 20 }}, {'sale': true }}]}}

Implementation

SelectorBuilder or(SelectorBuilder other) {
  if (_query.isEmpty) {
    throw StateError('`Or` operation is not supported on empty query');
  }
  if (_query.containsKey('\$or')) {
    var expressions = _query['\$or'] as List;
    expressions.add(other._query);
  } else {
    var expressions = [_query];
    expressions.add(other._query);
    map['\$query'] = {'\$or': expressions};
  }
  return this;
}