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

Class UDTFNonAlignDataSet

java.lang.Object

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

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

org.apache.iotdb.db.query.dataset.UDTFNonAlignDataSet

All Implemented Interfaces:

DirectNonAlignDataSet

public class UDTFNonAlignDataSet
extends UDTFDataSet
implements DirectNonAlignDataSet

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 int[]	alreadyReturnedRowNumArray
protected boolean	isInitialized
protected int[]	offsetArray

Fields inherited from class org.apache.iotdb.db.query.dataset.UDTFDataSet

queryDataSetInputLayer, queryId, transformers, UDF_COLLECTOR_MEMORY_BUDGET_IN_MB, UDF_READER_MEMORY_BUDGET_IN_MB, UDF_TRANSFORMER_MEMORY_BUDGET_IN_MB, 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

Constructor	Description
UDTFNonAlignDataSet(QueryContext context, UDTFPlan udtfPlan, java.util.List<ManagedSeriesReader> readersOfSelectedSeries)	execute without value filter
UDTFNonAlignDataSet(QueryContext context, UDTFPlan udtfPlan, 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 filter

Method Summary

Modifier and Type	Method	Description
org.apache.iotdb.service.rpc.thrift.TSQueryNonAlignDataSet	fillBuffer(int fetchSize, WatermarkEncoder encoder)
protected org.apache.iotdb.tsfile.utils.Pair<java.nio.ByteBuffer,java.nio.ByteBuffer>	fillColumnBuffer(int transformedDataColumnIndex, int fetchSize, WatermarkEncoder encoder)
boolean	hasNextWithoutConstraint()
protected void	init()	offsetArray can not be initialized in the constructor, because rowOffset is set after the DataSet's construction.
org.apache.iotdb.tsfile.read.common.RowRecord	nextWithoutConstraint()

Methods inherited from class org.apache.iotdb.db.query.dataset.UDTFDataSet

finalizeUDFs, initTransformers

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

decreaseAlreadyReturnedRowNum, getColumnNum, getDataTypes, getEndPoint, getPaths, getRowLimit, getRowOffset, getWithoutNullColumnsIndex, hasLimit, hasNext, initQueryDataSetFields, isWithoutAllNull, isWithoutAnyNull, next, 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

isInitialized

protected boolean isInitialized

alreadyReturnedRowNumArray

protected int[] alreadyReturnedRowNumArray

offsetArray

protected int[] offsetArray

Constructor Detail

UDTFNonAlignDataSet

public UDTFNonAlignDataSet(QueryContext context,
                           UDTFPlan udtfPlan,
                           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 java.io.IOException,
                           QueryProcessException

execute with value filter

Throws:

java.io.IOException

QueryProcessException

UDTFNonAlignDataSet

public UDTFNonAlignDataSet(QueryContext context,
                           UDTFPlan udtfPlan,
                           java.util.List<ManagedSeriesReader> readersOfSelectedSeries)
                    throws QueryProcessException,
                           java.io.IOException,
                           java.lang.InterruptedException

execute without value filter

Throws:

QueryProcessException

java.io.IOException

java.lang.InterruptedException

Method Detail

init

protected void init()

offsetArray can not be initialized in the constructor, because rowOffset is set after the DataSet's construction. note that this method only can be called once in a query.

fillBuffer

public org.apache.iotdb.service.rpc.thrift.TSQueryNonAlignDataSet fillBuffer(int fetchSize,
                                                                             WatermarkEncoder encoder)
                                                                      throws java.io.IOException,
                                                                             QueryProcessException

Specified by:

fillBuffer in interface DirectNonAlignDataSet

Throws:

java.io.IOException

QueryProcessException

fillColumnBuffer

protected org.apache.iotdb.tsfile.utils.Pair<java.nio.ByteBuffer,java.nio.ByteBuffer> fillColumnBuffer(int transformedDataColumnIndex,
                                                                                                             int fetchSize,
                                                                                                             WatermarkEncoder encoder)
                                                                                                      throws java.io.IOException,
                                                                                                             QueryProcessException

Throws:

java.io.IOException

QueryProcessException

hasNextWithoutConstraint

public boolean hasNextWithoutConstraint()

Specified by:

hasNextWithoutConstraint in class org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

nextWithoutConstraint

public org.apache.iotdb.tsfile.read.common.RowRecord nextWithoutConstraint()

Specified by:

nextWithoutConstraint in class org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet