DQ class

A utility class for building MongoDB queries.

The DQ class provides a set of static methods to construct MongoDB-compatible queries in a more readable and structured way. It allows for easy creation of complex queries with operations such as equality checks, logical operations (\$or, \$and), pattern matching, and aggregation commands like grouping and sorting.

Example Usage:

var query = DQ.and([
  DQ.field('name', DQ.like('John')),
  DQ.field('age', DQ.eq(25)),
]);
var result = await collection.find(query).toList();

Constructors

DQ()

Properties

hashCode → int: The hash code for this object.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Methods

and(List<Object?> list) → Map<String, Object?>: Constructs a logical AND query.
eq(Object? value) → Object?: Returns a value for equality comparison.
field(String name, Object? query) → Map<String, Object?>: Constructs a query for a specific field.
group(Map<String, Object?> query) → Map<String, Object>: Constructs a MongoDB aggregation group stage.
hasIn(Object? value) → Map<String, Object?>: Matches documents where the field's value is in the provided list.
hasNin(Object? value) → Map<String, Object?>: Matches documents where the field's value is not in the provided list.
id(String id) → Map<String, Object?>: Matches a document based on a string ID.
like(String value, {String options = 'i'}) → Map<String, Object?>: Matches documents where the field's value matches a regular expression.
oid(ObjectId id) → Map<String, Object?>: Matches a document based on its ObjectId.
or(List<Object?> list) → Map<String, Object?>: Constructs a logical OR query.
order(String? orderBy, [bool orderReverse = true]) → Map<String, Object>?: Constructs an order/sorting query for MongoDB.
sum(String field) → Map<String, Object?>: Constructs a sum aggregation operation.