CollectionReference

public class CollectionReference extends Query

A CollectionReference can be used for adding documents, getting document references, and querying for documents (using the methods inherited from Query).

Subclassing Note: Cloud Firestore classes are not meant to be subclassed except for use in test mocks. Subclassing is not supported in production code and new SDK releases may break code that does so.

Public Method Summary

Task<DocumentReference>	add(Object data) Adds a new document to this collection with the specified data, assigning it a document ID automatically.
DocumentReference	document() Returns a `DocumentReference` pointing to a new document with an auto-generated ID within this collection.
DocumentReference	document(String documentPath) Gets a `DocumentReference` instance that refers to the document at the specified path within this collection.
String	getId()
DocumentReference	getParent() Gets a `DocumentReference` to the document that contains this collection.
String	getPath() Gets the path of this collection (relative to the root of the database) as a slash-separated string.

Inherited Method Summary

From class com.google.firebase.firestore.Query

ListenerRegistration	addSnapshotListener(Activity activity, EventListener<QuerySnapshot> listener) Starts listening to this query using an Activity-scoped listener.
ListenerRegistration	addSnapshotListener(MetadataChanges metadataChanges, EventListener<QuerySnapshot> listener) Starts listening to this query with the given options.
ListenerRegistration	addSnapshotListener(Executor executor, EventListener<QuerySnapshot> listener) Starts listening to this query.
ListenerRegistration	addSnapshotListener(Executor executor, MetadataChanges metadataChanges, EventListener<QuerySnapshot> listener) Starts listening to this query with the given options.
ListenerRegistration	addSnapshotListener(Activity activity, MetadataChanges metadataChanges, EventListener<QuerySnapshot> listener) Starts listening to this query with the given options, using an Activity-scoped listener.
ListenerRegistration	addSnapshotListener(EventListener<QuerySnapshot> listener) Starts listening to this query.
Query	endAt(DocumentSnapshot snapshot) Creates and returns a new `Query` that ends at the provided document (inclusive).
Query	endAt(Object... fieldValues) Creates and returns a new `Query` that ends at the provided fields relative to the order of the query.
Query	endBefore(DocumentSnapshot snapshot) Creates and returns a new `Query` that ends before the provided document (exclusive).
Query	endBefore(Object... fieldValues) Creates and returns a new `Query` that ends before the provided fields relative to the order of the query.
boolean	equals(Object o)
Task<QuerySnapshot>	get() Executes the query and returns the results as a `QuerySnapshot`.
Task<QuerySnapshot>	get(Source source) Executes the query and returns the results as a `QuerySnapshot`.
FirebaseFirestore	getFirestore() Gets the Cloud Firestore instance associated with this query.