Package org.apache.iotdb.db.mpp.transformation.dag.intermediate

Class MultiInputColumnIntermediateLayer

java.lang.Object

org.apache.iotdb.db.mpp.transformation.dag.intermediate.IntermediateLayer

org.apache.iotdb.db.mpp.transformation.dag.intermediate.MultiInputColumnIntermediateLayer

All Implemented Interfaces:

IUDFInputDataSet

public class MultiInputColumnIntermediateLayer
extends IntermediateLayer
implements IUDFInputDataSet

Field Summary

Fields inherited from class org.apache.iotdb.db.mpp.transformation.dag.intermediate.IntermediateLayer

CACHE_BLOCK_SIZE, expression, memoryBudgetInMB, queryId

Constructor Summary

Constructors

Constructor	Description
MultiInputColumnIntermediateLayer(Expression expression, long queryId, float memoryBudgetInMB, java.util.List<LayerPointReader> parentLayerPointReaders)

Method Summary

Modifier and Type	Method	Description
YieldableState	canYieldNextRowInObjects()	Whether the data set has next row.
LayerPointReader	constructPointReader()
LayerRowReader	constructRowReader()
protected LayerRowWindowReader	constructRowSessionTimeWindowReader(org.apache.iotdb.udf.api.customizer.strategy.SessionTimeWindowAccessStrategy strategy, float memoryBudgetInMB)
protected LayerRowWindowReader	constructRowSlidingSizeWindowReader(org.apache.iotdb.udf.api.customizer.strategy.SlidingSizeWindowAccessStrategy strategy, float memoryBudgetInMB)
protected LayerRowWindowReader	constructRowSlidingTimeWindowReader(org.apache.iotdb.udf.api.customizer.strategy.SlidingTimeWindowAccessStrategy strategy, float memoryBudgetInMB)
protected LayerRowWindowReader	constructRowStateWindowReader(org.apache.iotdb.udf.api.customizer.strategy.StateWindowAccessStrategy strategy, float memoryBudgetInMB)
java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType>	getDataTypes()	returns the input data types, except the timestamp column(the last column).
boolean	hasNextRowInObjects()	Whether the data set has next row.
java.lang.Object[]	nextRowInObjects()	Get the next row for UDFPlan input.

Methods inherited from class org.apache.iotdb.db.mpp.transformation.dag.intermediate.IntermediateLayer

constructRowWindowReader, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MultiInputColumnIntermediateLayer

public MultiInputColumnIntermediateLayer(Expression expression,
                                         long queryId,
                                         float memoryBudgetInMB,
                                         java.util.List<LayerPointReader> parentLayerPointReaders)

Method Detail

getDataTypes

public java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> getDataTypes()

Description copied from interface: IUDFInputDataSet

returns the input data types, except the timestamp column(the last column).

Specified by:

getDataTypes in interface IUDFInputDataSet

hasNextRowInObjects

public boolean hasNextRowInObjects()
                            throws java.io.IOException

Description copied from interface: IUDFInputDataSet

Whether the data set has next row.

Specified by:

hasNextRowInObjects in interface IUDFInputDataSet

Throws:

java.io.IOException

canYieldNextRowInObjects

public YieldableState canYieldNextRowInObjects()
                                        throws java.io.IOException

Description copied from interface: IUDFInputDataSet

Whether the data set has next row.

Specified by:

canYieldNextRowInObjects in interface IUDFInputDataSet

Throws:

java.io.IOException

nextRowInObjects

public java.lang.Object[] nextRowInObjects()

Description copied from interface: IUDFInputDataSet

Get the next row for UDFPlan input.

The last element in the row is the timestamp.

Specified by:

nextRowInObjects in interface IUDFInputDataSet

constructPointReader

public LayerPointReader constructPointReader()

Specified by:

constructPointReader in class IntermediateLayer

constructRowReader

public LayerRowReader constructRowReader()

Specified by:

constructRowReader in class IntermediateLayer

constructRowSlidingSizeWindowReader

protected LayerRowWindowReader constructRowSlidingSizeWindowReader(org.apache.iotdb.udf.api.customizer.strategy.SlidingSizeWindowAccessStrategy strategy,
                                                                   float memoryBudgetInMB)
                                                            throws QueryProcessException

Specified by:

constructRowSlidingSizeWindowReader in class IntermediateLayer

Throws:

QueryProcessException

constructRowSlidingTimeWindowReader

protected LayerRowWindowReader constructRowSlidingTimeWindowReader(org.apache.iotdb.udf.api.customizer.strategy.SlidingTimeWindowAccessStrategy strategy,
                                                                   float memoryBudgetInMB)
                                                            throws QueryProcessException

Specified by:

constructRowSlidingTimeWindowReader in class IntermediateLayer

Throws:

QueryProcessException

constructRowSessionTimeWindowReader

protected LayerRowWindowReader constructRowSessionTimeWindowReader(org.apache.iotdb.udf.api.customizer.strategy.SessionTimeWindowAccessStrategy strategy,
                                                                   float memoryBudgetInMB)
                                                            throws QueryProcessException

Specified by:

constructRowSessionTimeWindowReader in class IntermediateLayer

Throws:

QueryProcessException

constructRowStateWindowReader

protected LayerRowWindowReader constructRowStateWindowReader(org.apache.iotdb.udf.api.customizer.strategy.StateWindowAccessStrategy strategy,
                                                             float memoryBudgetInMB)

Specified by:

constructRowStateWindowReader in class IntermediateLayer