Package org.apache.iotdb.db.query.dataset

Class UDTFDataSet

java.lang.Object

org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

org.apache.iotdb.db.query.dataset.UDTFDataSet

Direct Known Subclasses:

UDTFAlignByTimeDataSet, UDTFNonAlignDataSet

public abstract class UDTFDataSet
extends org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet.EndPoint

Field Summary

Fields

Modifier and Type	Field	Description
protected QueryDataSetInputLayer	queryDataSetInputLayer
protected long	queryId
protected LayerPointReader[]	transformers
protected static float	UDF_COLLECTOR_MEMORY_BUDGET_IN_MB
protected static float	UDF_READER_MEMORY_BUDGET_IN_MB
protected static float	UDF_TRANSFORMER_MEMORY_BUDGET_IN_MB
protected UDTFPlan	udtfPlan

Fields inherited from class org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

alreadyReturnedRowNum, ascending, columnNum, dataTypes, endPoint, fetchSize, paths, rowLimit, rowOffset, withoutAllNull, withoutAnyNull, withoutNullColumnsIndex

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	UDTFDataSet(QueryContext queryContext, UDTFPlan udtfPlan, java.util.List<org.apache.iotdb.commons.path.PartialPath> deduplicatedPaths, java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> deduplicatedDataTypes, java.util.List<ManagedSeriesReader> readersOfSelectedSeries)	execute without value filters
protected	UDTFDataSet(QueryContext queryContext, UDTFPlan udtfPlan, java.util.List<org.apache.iotdb.commons.path.PartialPath> deduplicatedPaths, java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> deduplicatedDataTypes, org.apache.iotdb.tsfile.read.query.timegenerator.TimeGenerator timestampGenerator, java.util.List<IReaderByTimestamp> readersOfSelectedSeries, java.util.List<java.util.List<java.lang.Integer>> readerToIndexList, java.util.List<java.lang.Boolean> cached)	execute with value filters
	UDTFDataSet(QueryContext queryContext, UDTFPlan udtfPlan, IUDFInputDataSet dataSet)

Method Summary

Modifier and Type	Method	Description
void	finalizeUDFs(long queryId)
protected void	initTransformers()

Methods inherited from class org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

decreaseAlreadyReturnedRowNum, getColumnNum, getDataTypes, getEndPoint, getPaths, getRowLimit, getRowOffset, getWithoutNullColumnsIndex, hasLimit, hasNext, hasNextWithoutConstraint, initQueryDataSetFields, isWithoutAllNull, isWithoutAnyNull, next, nextWithoutConstraint, setColumnNum, setDataTypes, setEndPoint, setFetchSize, setRowLimit, setRowOffset, setWithoutAllNull, setWithoutAnyNull, setWithoutNullColumnsIndex, withoutNullFilter

Methods inherited from class java.lang.Object

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

Field Detail

UDF_READER_MEMORY_BUDGET_IN_MB

protected static final float UDF_READER_MEMORY_BUDGET_IN_MB

UDF_TRANSFORMER_MEMORY_BUDGET_IN_MB

protected static final float UDF_TRANSFORMER_MEMORY_BUDGET_IN_MB

UDF_COLLECTOR_MEMORY_BUDGET_IN_MB

protected static final float UDF_COLLECTOR_MEMORY_BUDGET_IN_MB

queryId

protected final long queryId

udtfPlan

protected final UDTFPlan udtfPlan

queryDataSetInputLayer

protected final QueryDataSetInputLayer queryDataSetInputLayer

transformers

protected LayerPointReader[] transformers

Constructor Detail

UDTFDataSet

protected UDTFDataSet(QueryContext queryContext,
                      UDTFPlan udtfPlan,
                      java.util.List<org.apache.iotdb.commons.path.PartialPath> deduplicatedPaths,
                      java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> deduplicatedDataTypes,
                      org.apache.iotdb.tsfile.read.query.timegenerator.TimeGenerator timestampGenerator,
                      java.util.List<IReaderByTimestamp> readersOfSelectedSeries,
                      java.util.List<java.util.List<java.lang.Integer>> readerToIndexList,
                      java.util.List<java.lang.Boolean> cached)
               throws QueryProcessException,
                      java.io.IOException

execute with value filters

Throws:

QueryProcessException

java.io.IOException

UDTFDataSet

protected UDTFDataSet(QueryContext queryContext,
                      UDTFPlan udtfPlan,
                      java.util.List<org.apache.iotdb.commons.path.PartialPath> deduplicatedPaths,
                      java.util.List<org.apache.iotdb.tsfile.file.metadata.enums.TSDataType> deduplicatedDataTypes,
                      java.util.List<ManagedSeriesReader> readersOfSelectedSeries)
               throws QueryProcessException,
                      java.io.IOException,
                      java.lang.InterruptedException

execute without value filters

Throws:

QueryProcessException

java.io.IOException

java.lang.InterruptedException

UDTFDataSet

public UDTFDataSet(QueryContext queryContext,
                   UDTFPlan udtfPlan,
                   IUDFInputDataSet dataSet)
            throws QueryProcessException,
                   java.io.IOException

Throws:

QueryProcessException

java.io.IOException

Method Detail

initTransformers

protected void initTransformers()
                         throws QueryProcessException,
                                java.io.IOException

Throws:

QueryProcessException

java.io.IOException

finalizeUDFs

public void finalizeUDFs(long queryId)