Package com.mongodb.reactivestreams.client

Interface MapReducePublisher<TResult>

  • Type Parameters:
    TResult - The type of the result.
    All Superinterfaces:
    Publisher<TResult>
    @Deprecated
public interface MapReducePublisher<TResult>
extends Publisher<TResult>
    Deprecated.
    Superseded by aggregate
    Publisher for map reduce.
    Since:
    1.0

    • Method Detail

      • collectionName

        MapReducePublisher<TResult> collectionName​(String collectionName)
        Deprecated.
        Sets the collectionName for the output of the MapReduce

        The default action is replace the collection if it exists, to change this use action(com.mongodb.client.model.MapReduceAction).

        Parameters:
        collectionName - the name of the collection that you want the map-reduce operation to write its output.
        Returns:
        this

      • scope

        MapReducePublisher<TResult> scope​(@Nullable
                                  Bson scope)
        Deprecated.
        Sets the global variables that are accessible in the map, reduce and finalize functions.
        Parameters:
        scope - the global variables that are accessible in the map, reduce and finalize functions.
        Returns:
        this
        MongoDB documentation
        mapReduce

      • sort

        MapReducePublisher<TResult> sort​(@Nullable
                                 Bson sort)
        Deprecated.
        Sets the sort criteria to apply to the query.
        Parameters:
        sort - the sort criteria, which may be null.
        Returns:
        this
        MongoDB documentation
        Sort

      • filter

        MapReducePublisher<TResult> filter​(@Nullable
                                   Bson filter)
        Deprecated.
        Sets the query filter to apply to the query.
        Parameters:
        filter - the filter to apply to the query.
        Returns:
        this
        MongoDB documentation
        Filter

      • limit

        MapReducePublisher<TResult> limit​(int limit)
        Deprecated.
        Sets the limit to apply.
        Parameters:
        limit - the limit, which may be null
        Returns:
        this
        MongoDB documentation
        Limit

      • jsMode

        MapReducePublisher<TResult> jsMode​(boolean jsMode)
        Deprecated.
        Sets the flag that specifies whether to convert intermediate data into BSON format between the execution of the map and reduce functions. Defaults to false.
        Parameters:
        jsMode - the flag that specifies whether to convert intermediate data into BSON format between the execution of the map and reduce functions
        Returns:
        jsMode
        MongoDB documentation
        mapReduce

      • verbose

        MapReducePublisher<TResult> verbose​(boolean verbose)
        Deprecated.
        Sets whether to include the timing information in the result information.
        Parameters:
        verbose - whether to include the timing information in the result information.
        Returns:
        this

      • maxTime

        MapReducePublisher<TResult> maxTime​(long maxTime,
                                    TimeUnit timeUnit)
        Deprecated.
        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

      • sharded

        @Deprecated
MapReducePublisher<TResult> sharded​(boolean sharded)
        Deprecated.
        this option will no longer be supported in MongoDB 4.4
        Sets if the output database is sharded
        Parameters:
        sharded - if the output database is sharded
        Returns:
        this
        MongoDB documentation
        output with an action

      • nonAtomic

        @Deprecated
MapReducePublisher<TResult> nonAtomic​(boolean nonAtomic)
        Deprecated.
        this option will no longer be supported in MongoDB 4.4 as it will no longer hold a global or database level write lock.
        Sets if the post-processing step will prevent MongoDB from locking the database. Valid only with the MapReduceAction.MERGE or MapReduceAction.REDUCE actions.
        Parameters:
        nonAtomic - if the post-processing step will prevent MongoDB from locking the database.
        Returns:
        this
        MongoDB documentation
        output with an action

      • bypassDocumentValidation

        MapReducePublisher<TResult> bypassDocumentValidation​(@Nullable
                                                     Boolean bypassDocumentValidation)
        Deprecated.
        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

        Publisher<Void> toCollection()
        Deprecated.
        Aggregates documents to a collection according to the specified map-reduce function with the given options, which must specify a non-inline result.
        Returns:
        an empty publisher that indicates when the operation has completed
        MongoDB documentation
        Aggregation

      • collation

        MapReducePublisher<TResult> collation​(@Nullable
                                      Collation collation)
        Deprecated.
        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

      • batchSize

        MapReducePublisher<TResult> batchSize​(int batchSize)
        Deprecated.
        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

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