Source enum Null safety

An enumeration of firestore source types.





serverAndCache → const Source

Causes Firestore to try to retrieve an up-to-date (server-retrieved) snapshot, but fall back to returning cached data if the server can't be reached.

const Source(0)
server → const Source

Causes Firestore to avoid the cache, generating an error if the server cannot be reached. Note that the cache will still be updated if the server request succeeds. Also note that latency-compensation still takes effect, so any pending write operations will be visible in the returned data (merged into the server-provided data).

const Source(1)
cache → const Source

Causes Firestore to immediately return a value from the cache, ignoring the server completely (implying that the returned value may be stale with respect to the value on the server). If there is no data in the cache to satisfy the get call, DocumentReference.get will throw a FirebaseException and Query.get will return an empty QuerySnapshotPlatform with no documents.

const Source(2)


hashCode int
The hash code for this object.
read-only, inherited
index int
A numeric identifier for the enumerated value.
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited


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


operator ==(Object other) bool
The equality operator.


values → const List<Source>
A constant List of the values in this enum, in order of their declaration.
[serverAndCache, server, cache]