Package io.activej.aggregation

Interface AggregationChunkStorage<C>

All Superinterfaces:

IdGenerator<C>

All Known Implementing Classes:

ActiveFsChunkStorage

public interface AggregationChunkStorage<C>
extends IdGenerator<C>

Manages persistence of aggregations (chunks of data).

Method Summary

Modifier and Type	Method	Description
io.activej.promise.Promise<Void>	finish(Set<C> chunkIds)
<T> io.activej.promise.Promise<StreamSupplier<T>>	read(AggregationStructure aggregation, List<String> fields, Class<T> recordClass, C chunkId, DefiningClassLoader classLoader)	Creates a StreamSupplier that streams records contained in the chunk.
<T> io.activej.promise.Promise<StreamConsumer<T>>	write(AggregationStructure aggregation, List<String> fields, Class<T> recordClass, C chunkId, DefiningClassLoader classLoader)	Creates a StreamConsumer that persists streamed records.

Methods inherited from interface io.activej.ot.util.IdGenerator

createId

Method Details

read

<T> io.activej.promise.Promise<StreamSupplier<T>> read(AggregationStructure aggregation,
 List<String> fields,
 Class<T> recordClass,
 C chunkId,
 DefiningClassLoader classLoader)

Creates a StreamSupplier that streams records contained in the chunk. The chunk to read is determined by aggregationId and id.

Parameters:

recordClass - class of chunk record

chunkId - id of chunk

Returns:

StreamSupplier, which will stream read records to its wired consumer.

write

<T> io.activej.promise.Promise<StreamConsumer<T>> write(AggregationStructure aggregation,
 List<String> fields,
 Class<T> recordClass,
 C chunkId,
 DefiningClassLoader classLoader)

Creates a StreamConsumer that persists streamed records. The chunk to write is determined by aggregationId and id.

Parameters:

fields - fields of chunk record

recordClass - class of chunk record

chunkId - id of chunk

finish

io.activej.promise.Promise<Void> finish(Set<C> chunkIds)