use of com.google.firestore.v1.DocumentChange in project firebase-android-sdk by firebase.
the class RemoteSerializer method decodeWatchChange.
// Watch changes
public WatchChange decodeWatchChange(ListenResponse protoChange) {
WatchChange watchChange;
switch(protoChange.getResponseTypeCase()) {
case TARGET_CHANGE:
com.google.firestore.v1.TargetChange targetChange = protoChange.getTargetChange();
WatchTargetChangeType changeType;
Status cause = null;
switch(targetChange.getTargetChangeType()) {
case NO_CHANGE:
changeType = WatchTargetChangeType.NoChange;
break;
case ADD:
changeType = WatchTargetChangeType.Added;
break;
case REMOVE:
changeType = WatchTargetChangeType.Removed;
cause = fromStatus(targetChange.getCause());
break;
case CURRENT:
changeType = WatchTargetChangeType.Current;
break;
case RESET:
changeType = WatchTargetChangeType.Reset;
break;
case UNRECOGNIZED:
default:
throw new IllegalArgumentException("Unknown target change type");
}
watchChange = new WatchTargetChange(changeType, targetChange.getTargetIdsList(), targetChange.getResumeToken(), cause);
break;
case DOCUMENT_CHANGE:
DocumentChange docChange = protoChange.getDocumentChange();
List<Integer> added = docChange.getTargetIdsList();
List<Integer> removed = docChange.getRemovedTargetIdsList();
DocumentKey key = decodeKey(docChange.getDocument().getName());
SnapshotVersion version = decodeVersion(docChange.getDocument().getUpdateTime());
hardAssert(!version.equals(SnapshotVersion.NONE), "Got a document change without an update time");
ObjectValue data = ObjectValue.fromMap(docChange.getDocument().getFieldsMap());
MutableDocument document = MutableDocument.newFoundDocument(key, version, data);
watchChange = new WatchChange.DocumentChange(added, removed, document.getKey(), document);
break;
case DOCUMENT_DELETE:
DocumentDelete docDelete = protoChange.getDocumentDelete();
removed = docDelete.getRemovedTargetIdsList();
key = decodeKey(docDelete.getDocument());
// Note that version might be unset in which case we use SnapshotVersion.NONE
version = decodeVersion(docDelete.getReadTime());
MutableDocument doc = MutableDocument.newNoDocument(key, version);
watchChange = new WatchChange.DocumentChange(Collections.emptyList(), removed, doc.getKey(), doc);
break;
case DOCUMENT_REMOVE:
DocumentRemove docRemove = protoChange.getDocumentRemove();
removed = docRemove.getRemovedTargetIdsList();
key = decodeKey(docRemove.getDocument());
watchChange = new WatchChange.DocumentChange(Collections.emptyList(), removed, key, null);
break;
case FILTER:
com.google.firestore.v1.ExistenceFilter protoFilter = protoChange.getFilter();
// TODO: implement existence filter parsing (see b/33076578)
ExistenceFilter filter = new ExistenceFilter(protoFilter.getCount());
int targetId = protoFilter.getTargetId();
watchChange = new ExistenceFilterWatchChange(targetId, filter);
break;
case RESPONSETYPE_NOT_SET:
default:
throw new IllegalArgumentException("Unknown change type set");
}
return watchChange;
}
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