Examples with MongoWriter org.springframework.data.mongodb.core.convert.MongoWriter used on opensource projects

Example 1 with MongoWriter

use of org.springframework.data.mongodb.core.convert.MongoWriter in project spring-data-mongodb by spring-projects.

the class ReactiveMongoTemplate method doInsertBatch.

protected <T> Flux<T> doInsertBatch(String collectionName, Collection<? extends T> batchToSave, MongoWriter<Object> writer) {
    Assert.notNull(writer, "MongoWriter must not be null!");
    Mono<List<Tuple2<AdaptibleEntity<T>, Document>>> prepareDocuments = Flux.fromIterable(batchToSave).flatMap(uninitialized -> {
        BeforeConvertEvent<T> event = new BeforeConvertEvent<>(uninitialized, collectionName);
        T toConvert = maybeEmitEvent(event).getSource();
        return maybeCallBeforeConvert(toConvert, collectionName).flatMap(it -> {
            AdaptibleEntity<T> entity = operations.forEntity(it, mongoConverter.getConversionService());
            entity.assertUpdateableIdIfNotSet();
            T initialized = entity.initializeVersionProperty();
            Document dbDoc = entity.toMappedDocument(writer).getDocument();
            maybeEmitEvent(new BeforeSaveEvent<>(initialized, dbDoc, collectionName));
            return maybeCallBeforeSave(initialized, dbDoc, collectionName).thenReturn(Tuples.of(entity, dbDoc));
        });
    }).collectList();
    Flux<Tuple2<AdaptibleEntity<T>, Document>> insertDocuments = prepareDocuments.flatMapMany(tuples -> {
        List<Document> documents = tuples.stream().map(Tuple2::getT2).collect(Collectors.toList());
        return insertDocumentList(collectionName, documents).thenMany(Flux.fromIterable(tuples));
    });
    return insertDocuments.flatMap(tuple -> {
        Document document = tuple.getT2();
        Object id = MappedDocument.of(document).getId();
        T saved = tuple.getT1().populateIdIfNecessary(id);
        maybeEmitEvent(new AfterSaveEvent<>(saved, document, collectionName));
        return maybeCallAfterSave(saved, document, collectionName);
    });
}