Examples with AggregationOptions org.springframework.data.mongodb.core.aggregation.AggregationOptions used on opensource projects

Example 6 with AggregationOptions

use of org.springframework.data.mongodb.core.aggregation.AggregationOptions in project spring-data-mongodb by spring-projects.

the class MongoTemplate method aggregateStream.

@SuppressWarnings("ConstantConditions")
protected <O> CloseableIterator<O> aggregateStream(Aggregation aggregation, String collectionName, Class<O> outputType, @Nullable AggregationOperationContext context) {
    Assert.hasText(collectionName, "Collection name must not be null or empty!");
    Assert.notNull(aggregation, "Aggregation pipeline must not be null!");
    Assert.notNull(outputType, "Output type must not be null!");
    Assert.isTrue(!aggregation.getOptions().isExplain(), "Can't use explain option with streaming!");
    AggregationDefinition aggregationDefinition = queryOperations.createAggregation(aggregation, context);
    AggregationOptions options = aggregation.getOptions();
    List<Document> pipeline = aggregationDefinition.getAggregationPipeline();
    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug(String.format("Streaming aggregation: %s in collection %s", serializeToJsonSafely(pipeline), collectionName));
    }
    ReadDocumentCallback<O> readCallback = new ReadDocumentCallback<>(mongoConverter, outputType, collectionName);
    return execute(collectionName, (CollectionCallback<CloseableIterator<O>>) collection -> {
        AggregateIterable<Document> cursor = collection.aggregate(pipeline, Document.class).allowDiskUse(options.isAllowDiskUse());
        if (options.getCursorBatchSize() != null) {
            cursor = cursor.batchSize(options.getCursorBatchSize());
        }
        options.getComment().ifPresent(cursor::comment);
        options.getHint().ifPresent(cursor::hint);
        Class<?> domainType = aggregation instanceof TypedAggregation ? ((TypedAggregation) aggregation).getInputType() : null;
        Optionals.firstNonEmpty(options::getCollation, () -> operations.forType(domainType).getCollation()).map(Collation::toMongoCollation).ifPresent(cursor::collation);
        return new CloseableIterableCursorAdapter<>(cursor, exceptionTranslator, readCallback);
    });
}

Example 7 with AggregationOptions

use of org.springframework.data.mongodb.core.aggregation.AggregationOptions in project spring-data-mongodb by spring-projects.

the class ReactiveMongoTemplateUnitTests method aggregateShouldHonorOptionsHint.

// DATAMONGO-1836
@Test
void aggregateShouldHonorOptionsHint() {
    Document hint = new Document("dummyHint", 1);
    AggregationOptions options = AggregationOptions.builder().hint(hint).build();
    template.aggregate(newAggregation(Sith.class, project("id")).withOptions(options), AutogenerateableId.class, Document.class).subscribe();
    verify(aggregatePublisher).hint(hint);
}

Example 8 with AggregationOptions

use of org.springframework.data.mongodb.core.aggregation.AggregationOptions in project spring-data-mongodb by spring-projects.

the class ReactiveMongoTemplateUnitTests method aggregateShouldHonorOptionsComment.

// DATAMONGO-2153
@Test
void aggregateShouldHonorOptionsComment() {
    AggregationOptions options = AggregationOptions.builder().comment("expensive").build();
    template.aggregate(newAggregation(Sith.class, project("id")).withOptions(options), AutogenerateableId.class, Document.class).subscribe();
    verify(aggregatePublisher).comment("expensive");
}

Example 9 with AggregationOptions

use of org.springframework.data.mongodb.core.aggregation.AggregationOptions in project spring-data-mongodb by spring-projects.

the class StringBasedAggregation method doExecute.

/*
	 * (non-Javascript)
	 * @see org.springframework.data.mongodb.repository.query.AbstractReactiveMongoQuery#doExecute(org.springframework.data.mongodb.repository.query.MongoQueryMethod, org.springframework.data.repository.query.ResultProcessor, org.springframework.data.mongodb.repository.query.ConvertingParameterAccessor, java.lang.Class)
	 */
@Override
protected Object doExecute(MongoQueryMethod method, ResultProcessor resultProcessor, ConvertingParameterAccessor accessor, Class<?> typeToRead) {
    Class<?> sourceType = method.getDomainClass();
    Class<?> targetType = typeToRead;
    List<AggregationOperation> pipeline = computePipeline(method, accessor);
    AggregationUtils.appendSortIfPresent(pipeline, accessor, typeToRead);
    if (method.isSliceQuery()) {
        AggregationUtils.appendLimitAndOffsetIfPresent(pipeline, accessor, LongUnaryOperator.identity(), limit -> limit + 1);
    } else {
        AggregationUtils.appendLimitAndOffsetIfPresent(pipeline, accessor);
    }
    boolean isSimpleReturnType = isSimpleReturnType(typeToRead);
    boolean isRawAggregationResult = ClassUtils.isAssignable(AggregationResults.class, typeToRead);
    if (isSimpleReturnType) {
        targetType = Document.class;
    } else if (isRawAggregationResult) {
        // 🙈
        targetType = method.getReturnType().getRequiredActualType().getRequiredComponentType().getType();
    }
    AggregationOptions options = computeOptions(method, accessor);
    TypedAggregation<?> aggregation = new TypedAggregation<>(sourceType, pipeline, options);
    if (method.isStreamQuery()) {
        Stream<?> stream = mongoOperations.aggregateStream(aggregation, targetType).stream();
        if (isSimpleReturnType) {
            return stream.map(it -> AggregationUtils.extractSimpleTypeResult((Document) it, typeToRead, mongoConverter));
        }
        return stream;
    }
    AggregationResults<Object> result = (AggregationResults<Object>) mongoOperations.aggregate(aggregation, targetType);
    if (isRawAggregationResult) {
        return result;
    }
    List<Object> results = result.getMappedResults();
    if (method.isCollectionQuery()) {
        return isSimpleReturnType ? convertResults(typeToRead, results) : results;
    }
    if (method.isSliceQuery()) {
        Pageable pageable = accessor.getPageable();
        int pageSize = pageable.getPageSize();
        List<Object> resultsToUse = isSimpleReturnType ? convertResults(typeToRead, results) : results;
        boolean hasNext = resultsToUse.size() > pageSize;
        return new SliceImpl<>(hasNext ? resultsToUse.subList(0, pageSize) : resultsToUse, pageable, hasNext);
    }
    Object uniqueResult = result.getUniqueMappedResult();
    return isSimpleReturnType ? AggregationUtils.extractSimpleTypeResult((Document) uniqueResult, typeToRead, mongoConverter) : uniqueResult;
}

Example 10 with AggregationOptions

use of org.springframework.data.mongodb.core.aggregation.AggregationOptions in project spring-data-mongodb by spring-projects.

the class ReactiveStringBasedAggregationUnitTests method plainStringAggregationConsidersMeta.

// DATAMONGO-2153
@Test
public void plainStringAggregationConsidersMeta() {
    AggregationInvocation invocation = executeAggregation("plainStringAggregation");
    AggregationOptions options = invocation.aggregation.getOptions();
    assertThat(options.getComment()).contains("expensive-aggregation");
    assertThat(options.getCursorBatchSize()).isEqualTo(42);
}