Package com.mongodb.reactivestreams.client

Interface AggregatePublisher<TResult>

  • Type Parameters:
    TResult - The type of the result.
    All Superinterfaces:
    org.reactivestreams.Publisher<TResult>
    public interface AggregatePublisher<TResult>
extends org.reactivestreams.Publisher<TResult>
    Publisher for aggregate.
    Since:
    1.0

    • Method Detail

      • allowDiskUse

        AggregatePublisher<TResult> allowDiskUse​(@Nullable
                                         Boolean allowDiskUse)
        Enables writing to temporary files. A null value indicates that it's unspecified.
        Parameters:
        allowDiskUse - true if writing to temporary files is enabled
        Returns:
        this
        MongoDB documentation
        Aggregation

      • maxTime

        AggregatePublisher<TResult> maxTime​(long maxTime,
                                    TimeUnit timeUnit)
        Sets the maximum execution time on the server for this operation.
        Parameters:
        maxTime - the max time
        timeUnit - the time unit, which may not be null
        Returns:
        this
        MongoDB documentation
        Max Time

      • maxAwaitTime

        AggregatePublisher<TResult> maxAwaitTime​(long maxAwaitTime,
                                         TimeUnit timeUnit)
        The maximum amount of time for the server to wait on new documents to satisfy a $changeStream aggregation. A zero value will be ignored.
        Parameters:
        maxAwaitTime - the max await time
        timeUnit - the time unit to return the result in
        Returns:
        the maximum await execution time in the given time unit
        Since:
        1.6
        Since server release
        3.6

      • bypassDocumentValidation

        AggregatePublisher<TResult> bypassDocumentValidation​(@Nullable
                                                     Boolean bypassDocumentValidation)
        Sets the bypass document level validation flag.

        Note: This only applies when an $out stage is specified

        .
        Parameters:
        bypassDocumentValidation - If true, allows the write to opt-out of document level validation.
        Returns:
        this
        Since:
        1.2
        MongoDB documentation
        Aggregation
        Since server release
        3.2

      • toCollection

        org.reactivestreams.Publisher<Void> toCollection()
        Aggregates documents according to the specified aggregation pipeline, which must end with a $out stage.
        Returns:
        an empty publisher that indicates when the operation has completed
        MongoDB documentation
        Aggregation

      • collation

        AggregatePublisher<TResult> collation​(@Nullable
                                      Collation collation)
        Sets the collation options

        A null value represents the server default.

        Parameters:
        collation - the collation options to use
        Returns:
        this
        Since:
        1.3
        Since server release
        3.4

      • comment

        AggregatePublisher<TResult> comment​(@Nullable
                                    String comment)
        Sets the comment to the aggregation. A null value means no comment is set.
        Parameters:
        comment - the comment
        Returns:
        this
        Since:
        1.7
        Since server release
        3.6

      • hint

        AggregatePublisher<TResult> hint​(@Nullable
                                 Bson hint)
        Sets the hint for which index to use. A null value means no hint is set.
        Parameters:
        hint - the hint
        Returns:
        this
        Since:
        1.7
        Since server release
        3.6

      • batchSize

        AggregatePublisher<TResult> batchSize​(int batchSize)
        Sets the number of documents to return per batch.

        Overrides the Subscription.request(long) value for setting the batch size, allowing for fine grained control over the underlying cursor.

        Parameters:
        batchSize - the batch size
        Returns:
        this
        Since:
        1.8
        MongoDB documentation
        Batch Size

      • first

        org.reactivestreams.Publisher<TResult> first()
        Helper to return a publisher limited to the first result.
        Returns:
        a Publisher which will contain a single item.
        Since:
        1.8

      • explain

        org.reactivestreams.Publisher<Document> explain()
        Explain the execution plan for this operation with the server's default verbosity level
        Returns:
        the execution plan
        Since:
        4.2
        MongoDB documentation
        reference/command/explain/
        Since server release
        3.6

      • explain

        org.reactivestreams.Publisher<Document> explain​(ExplainVerbosity verbosity)
        Explain the execution plan for this operation with the given verbosity level
        Parameters:
        verbosity - the verbosity of the explanation
        Returns:
        the execution plan
        Since:
        4.2
        MongoDB documentation
        reference/command/explain/
        Since server release
        3.6

      • explain

        <E> org.reactivestreams.Publisher<E> explain​(Class<E> explainResultClass)
        Explain the execution plan for this operation with the server's default verbosity level
        Type Parameters:
        E - the type of the document class
        Parameters:
        explainResultClass - the document class to decode into
        Returns:
        the execution plan
        Since:
        4.2
        MongoDB documentation
        reference/command/explain/
        Since server release
        3.6

      • explain

        <E> org.reactivestreams.Publisher<E> explain​(Class<E> explainResultClass,
                                             ExplainVerbosity verbosity)
        Explain the execution plan for this operation with the given verbosity level
        Type Parameters:
        E - the type of the document class
        Parameters:
        explainResultClass - the document class to decode into
        verbosity - the verbosity of the explanation
        Returns:
        the execution plan
        Since:
        4.2
        MongoDB documentation
        reference/command/explain/
        Since server release
        3.6