Query<T> class abstract

Querying is how you find records that match certain conditions.

Available extensions

• KtQuery
• QueryAggregation
• QueryDateAggregation

Constructors

Query()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

average() → Future<double>

Available on Query<T?>, provided by the QueryAggregation extension

Returns the average value of this query.

averageSync() → double

Available on Query<T?>, provided by the QueryAggregation extension

Returns the average value of this query.

count() → Future<int>

Count how many objects match this query.

countSync() → int

Count how many objects match this query.

deleteAll() → Future<int>

Delete all objects that match this query. Returns the number of deleted objects.

deleteAllSync() → int

Delete all objects that match this query. Returns the number of deleted objects.

deleteFirst() → Future<bool>

Delete the first object that matches this query. Returns whether a object has been deleted.

deleteFirstSync() → bool

Delete the first object that matches this query. Returns whether a object has been deleted.

exportJson() → Future<List<Map<String, dynamic>>>

Export the results of this query as json.

exportJsonKt() → Future<KtList<KtMap<String, dynamic>>>

Available on Query<T>, provided by the KtQuery extension

Export the results of this query as json.

exportJsonKtSync() → KtList<KtMap<String, dynamic>>

Available on Query<T>, provided by the KtQuery extension

Export the results of this query as json.

exportJsonRaw<R>(R callback(Uint8List)) → Future<R>

Export the results of this query as json bytes.

exportJsonRawSync<R>(R callback(Uint8List)) → R

Export the results of this query as json bytes.

exportJsonSync() → List<Map<String, dynamic>>

Export the results of this query as json.

findAll() → Future<List<T>>

Find all objects that match this query.

findAllKt() → Future<KtList<T>>

Available on Query<T>, provided by the KtQuery extension

Find all objects that match this query.

findAllKtSync() → KtList<T>

Available on Query<T>, provided by the KtQuery extension

Find all objects that match this query.

findAllSync() → List<T>

Find all objects that match this query.

findFirst() → Future<T?>

Find the first object that matches this query or null if no object matches.

findFirstSync() → T?

Find the first object that matches this query or null if no object matches.

max() → Future<T?>

Available on Query<T?>, provided by the QueryAggregation extension

Returns the maximum value of this query.

max() → Future<DateTime?>

Available on Query<T>, provided by the QueryDateAggregation extension

Returns the maximum value of this query.

maxSync() → DateTime?

Available on Query<T>, provided by the QueryDateAggregation extension

Returns the maximum value of this query.

maxSync() → T?

Available on Query<T?>, provided by the QueryAggregation extension

Returns the maximum value of this query.

min() → Future<DateTime?>

Available on Query<T>, provided by the QueryDateAggregation extension

Returns the minimum value of this query.

min() → Future<T?>

Available on Query<T?>, provided by the QueryAggregation extension

Returns the minimum value of this query.

minSync() → DateTime?

Available on Query<T>, provided by the QueryDateAggregation extension

Returns the minimum value of this query.

minSync() → T?

Available on Query<T?>, provided by the QueryAggregation extension

Returns the minimum value of this query.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

sum() → Future<T>

Available on Query<T?>, provided by the QueryAggregation extension

Returns the sum of all values of this query.

sumSync() → T

Available on Query<T?>, provided by the QueryAggregation extension

Returns the sum of all values of this query.

toString() → String

A string representation of this object.

inherited

watch({bool initialReturn = false}) → Stream<List<T>>

Create a watcher that yiels the results of this query whenever its results have (potentially) changed.

watchKt({bool initialReturn = false}) → Stream<KtList<T>>

Available on Query<T>, provided by the KtQuery extension

Create a watcher that yiels the results of this query whenever its results have (potentially) changed.

watchLazy() → Stream<void>

Watch the query for changes.

Operators

operator ==(Object other) → bool

The equality operator.

inherited