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Class CollectionGroup (3.21.4)
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Version 3.21.4 keyboard_arrow_down
public class CollectionGroup extends Query
A Collection Group query matches all documents that are contained in a collection or
subcollection with a specific collection ID.
Methods
getPartitions(long desiredPartitionCount)
public ApiFuture<List<QueryPartition> > getPartitions ( long desiredPartitionCount )
Parameter
Name
Description
desiredPartitionCount
long
getPartitions(long desiredPartitionCount, ApiStreamObserver<QueryPartition> observer) (deprecated)
public void getPartitions ( long desiredPartitionCount , ApiStreamObserver<QueryPartition> observer )
Deprecated. Please use #getPartitions(long) instead. All cursors will be loaded before
any value will be provided to observer
.
Partitions a query by returning partition cursors that can be used to run the query in
parallel. The returned partition cursors are split points that can be used as starting/end
points for the query results.
Parameters
Name
Description
desiredPartitionCount
long
The desired maximum number of partition points. The number must be
strictly positive. The actual number of partitions returned may be fewer.
observer
ApiStreamObserver <QueryPartition >
a stream observer that receives the result of the Partition request.
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Last updated 2024-10-04 UTC.
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{"lastModified": "Last updated 2024-10-04 UTC."}
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