Examples with MongoNamespace io.realm.mongodb.mongo.MongoNamespace used on opensource projects

Example 1 with MongoNamespace

use of io.realm.mongodb.mongo.MongoNamespace in project realm-java by realm.

the class ChangeEvent method fromBsonDocument.

/**
 * Deserializes a {@link BsonDocument} into an instance of change event.
 *
 * @param document the serialized document
 * @return the deserialized change event
 */
static <T> ChangeEvent<T> fromBsonDocument(final BsonDocument document, final Class<T> documentClass, CodecRegistry codecRegistry) {
    try {
        checkContainsKey(Fields.ID_FIELD, document, "document");
        checkContainsKey(Fields.OPERATION_TYPE_FIELD, document, "document");
        checkContainsKey(Fields.NS_FIELD, document, "document");
        checkContainsKey(Fields.DOCUMENT_KEY_FIELD, document, "document");
    } catch (IllegalArgumentException exception) {
        throw new AppException(ErrorCode.EVENT_DESERIALIZING, exception);
    }
    final BsonDocument nsDoc = document.getDocument(Fields.NS_FIELD);
    final UpdateDescription updateDescription;
    if (document.containsKey(Fields.UPDATE_DESCRIPTION_FIELD)) {
        updateDescription = UpdateDescription.fromBsonDocument(document.getDocument(Fields.UPDATE_DESCRIPTION_FIELD));
    } else {
        updateDescription = null;
    }
    final T fullDocument;
    if (document.containsKey(Fields.FULL_DOCUMENT_FIELD)) {
        final BsonValue fdVal = document.get(Fields.FULL_DOCUMENT_FIELD);
        if (fdVal.isDocument()) {
            fullDocument = codecRegistry.get(documentClass).decode(fdVal.asDocument().asBsonReader(), DecoderContext.builder().build());
        } else {
            fullDocument = null;
        }
    } else {
        fullDocument = null;
    }
    return new ChangeEvent<>(document.getDocument(Fields.ID_FIELD), fromRemote(document.getString(Fields.OPERATION_TYPE_FIELD).getValue()), fullDocument, new MongoNamespace(nsDoc.getString(Fields.NS_DB_FIELD).getValue(), nsDoc.getString(Fields.NS_COLL_FIELD).getValue()), document.getDocument(Fields.DOCUMENT_KEY_FIELD), updateDescription, document.getBoolean(Fields.WRITE_PENDING_FIELD, BsonBoolean.FALSE).getValue());
}