Package com.hildeio.firebase

Class FbEventHub

java.lang.Object

com.hildeio.firebase.FbEventHub

All Implemented Interfaces:

com.google.cloud.firestore.EventListener<com.google.cloud.firestore.QuerySnapshot>

public class FbEventHub
extends Object
implements com.google.cloud.firestore.EventListener<com.google.cloud.firestore.QuerySnapshot>

Klasse FbEventHub

Field Summary

Fields

Modifier and Type	Field	Description
private com.google.cloud.firestore.CollectionReference	collectionReference	Firestore Collection
private FbConfiguration	config	Firebase Konfigurationsdatei
private Log4Hilde	log4Hilde	Logging-Instanz
private com.google.cloud.firestore.ListenerRegistration	registration	Registrierung des Listeners der Collection

Constructor Summary

Constructors

Constructor	Description
FbEventHub(com.google.cloud.firestore.CollectionReference collectionReference, FbConfiguration config, Log4Hilde log4Hilde)	Konstruktor

Method Summary

Modifier and Type	Method	Description
private void	getDocumentChanges(com.google.cloud.firestore.QuerySnapshot snapshots, String eventId)	Geänderte Dokumente mittels dispatch() dem jeweiligen Service zustellen.
void	onEvent(com.google.cloud.firestore.QuerySnapshot querySnapshot, com.google.cloud.firestore.FirestoreException firestoreException)	Event bei Dokumentaenderungen in der Firestore Collection.
void	registerListner()	Firestore Collection für Dokumentaenderungen registrieren.
void	unregisterListener()	Unregister der Firestore Collection bei Dokumentaenderungen.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

config

private FbConfiguration config

Firebase Konfigurationsdatei

collectionReference

private com.google.cloud.firestore.CollectionReference collectionReference

Firestore Collection

registration

private com.google.cloud.firestore.ListenerRegistration registration

Registrierung des Listeners der Collection

log4Hilde

private Log4Hilde log4Hilde

Logging-Instanz

Constructor Details

FbEventHub

public FbEventHub(com.google.cloud.firestore.CollectionReference collectionReference,
 FbConfiguration config,
 Log4Hilde log4Hilde)

Konstruktor

Parameters:

collectionReference - Firbase Collection

config - Firebase Konfigurationsdatei

log4Hilde - Aktuelle Logging-Instanz.

Method Details

registerListner

public void registerListner()

Firestore Collection für Dokumentaenderungen registrieren.

unregisterListener

public void unregisterListener()

Unregister der Firestore Collection bei Dokumentaenderungen.

onEvent

public void onEvent(com.google.cloud.firestore.QuerySnapshot querySnapshot,
 com.google.cloud.firestore.FirestoreException firestoreException)

Event bei Dokumentaenderungen in der Firestore Collection.

Specified by:

onEvent in interface com.google.cloud.firestore.EventListener<com.google.cloud.firestore.QuerySnapshot>

Parameters:

querySnapshot - Collection-Dokumente.

firestoreException - Enthält Exception-Objekt im Fehlerfall.

getDocumentChanges

private void getDocumentChanges(com.google.cloud.firestore.QuerySnapshot snapshots,
 String eventId)

Geänderte Dokumente mittels dispatch() dem jeweiligen Service zustellen.

Parameters:

snapshots - Collection-Dokumente.

eventId - Aktuelle WorkflowId.