class DeltaAggregate extends ArrowAggregate
Returns batches of [threading key][dictionary deltas][record batch]. Will sort each batch, but not between batches.
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Instance Constructors
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new
DeltaAggregate(sft: SimpleFeatureType, dictionaryFields: Seq[String], encoding: SimpleFeatureEncoding, ipcOpts: IpcOption, sort: Option[(String, Boolean)], batchSize: Int)
- sft
simple feature type
- dictionaryFields
dictionary fields
- encoding
arrow encoding
- sort
sort field, sort reverse
- batchSize
batch size
Value Members
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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def
aggregate(sf: SimpleFeature): Int
Aggregate a feature.
Aggregate a feature. May be called anytime after
init
- sf
simple feature
- returns
number of entries aggregated
- Definition Classes
- DeltaAggregate → Result
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final
def
asInstanceOf[T0]: T0
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def
cleanup(): Unit
Dispose of any resources used by the scan.
Dispose of any resources used by the scan. If the result is re-used,
init
will be called again before anything else- Definition Classes
- DeltaAggregate → Result
-
def
clone(): AnyRef
- Attributes
- protected[lang]
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- @throws( ... ) @native() @HotSpotIntrinsicCandidate()
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def
encode(): Array[Byte]
Encode current aggregation and reset the result.
Encode current aggregation and reset the result. May be called anytime after
init
- Definition Classes
- DeltaAggregate → Result
-
final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
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def
equals(arg0: Any): Boolean
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final
def
getClass(): Class[_]
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- @native() @HotSpotIntrinsicCandidate()
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def
hashCode(): Int
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- @native() @HotSpotIntrinsicCandidate()
-
def
init(): Unit
Initialize the result for a scan
Initialize the result for a scan
- Definition Classes
- DeltaAggregate → Result
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final
def
isInstanceOf[T0]: Boolean
- Definition Classes
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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- @native() @HotSpotIntrinsicCandidate()
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final
def
notifyAll(): Unit
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
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final
def
wait(): Unit
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Deprecated Value Members
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def
finalize(): Unit
- Attributes
- protected[lang]
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- @throws( classOf[java.lang.Throwable] ) @Deprecated
- Deprecated