org.apache.iotdb.db.query.dataset

类 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

所有已实现的接口:

DirectNonAlignDataSet

public class UDTFNonAlignDataSet
extends UDTFDataSet
implements DirectNonAlignDataSet

嵌套类概要

从类继承的嵌套类/接口 org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

QueryDataSet.EndPoint

字段概要

字段

限定符和类型	字段和说明
protected int[]	alreadyReturnedRowNumArray
protected boolean	isInitialized
protected int[]	offsetArray

从类继承的字段 org.apache.iotdb.db.query.dataset.UDTFDataSet

queryId, rawQueryInputLayer, transformers, UDF_COLLECTOR_MEMORY_BUDGET_IN_MB, UDF_READER_MEMORY_BUDGET_IN_MB, UDF_TRANSFORMER_MEMORY_BUDGET_IN_MB, udtfPlan

从类继承的字段 org.apache.iotdb.tsfile.read.query.dataset.QueryDataSet

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

构造器概要

构造器

构造器和说明
UDTFNonAlignDataSet(QueryContext context, UDTFPlan udtfPlan, List<ManagedSeriesReader> readersOfSelectedSeries) execute without value filter
UDTFNonAlignDataSet(QueryContext context, UDTFPlan udtfPlan, TimeGenerator timestampGenerator, List<IReaderByTimestamp> readersOfSelectedSeries, List<List<Integer>> readerToIndexList, List<Boolean> cached) execute with value filter

方法概要

限定符和类型	方法和说明
org.apache.iotdb.service.rpc.thrift.TSQueryNonAlignDataSet	fillBuffer(int fetchSize, WatermarkEncoder encoder)
protected Pair<ByteBuffer,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. note that this method only can be called once in a query.
RowRecord	nextWithoutConstraint()

从类继承的方法 org.apache.iotdb.db.query.dataset.UDTFDataSet

finalizeUDFs, initTransformers

从类继承的方法 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

从类继承的方法 java.lang.Object

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

字段详细资料

isInitialized

protected boolean isInitialized

alreadyReturnedRowNumArray

protected int[] alreadyReturnedRowNumArray

offsetArray

protected int[] offsetArray

构造器详细资料

UDTFNonAlignDataSet

public UDTFNonAlignDataSet(QueryContext context,
                           UDTFPlan udtfPlan,
                           TimeGenerator timestampGenerator,
                           List<IReaderByTimestamp> readersOfSelectedSeries,
                           List<List<Integer>> readerToIndexList,
                           List<Boolean> cached)
                    throws IOException,
                           QueryProcessException

execute with value filter

抛出:

IOException

QueryProcessException

UDTFNonAlignDataSet

public UDTFNonAlignDataSet(QueryContext context,
                           UDTFPlan udtfPlan,
                           List<ManagedSeriesReader> readersOfSelectedSeries)
                    throws QueryProcessException,
                           IOException,
                           InterruptedException

execute without value filter

抛出:

QueryProcessException

IOException

InterruptedException

方法详细资料

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 IOException,
                                                                             QueryProcessException

指定者:

fillBuffer 在接口中 DirectNonAlignDataSet

抛出:

IOException

QueryProcessException

fillColumnBuffer

protected Pair<ByteBuffer,ByteBuffer> fillColumnBuffer(int transformedDataColumnIndex,
                                                       int fetchSize,
                                                       WatermarkEncoder encoder)
                                                throws IOException,
                                                       QueryProcessException

抛出:

IOException

QueryProcessException

hasNextWithoutConstraint

public boolean hasNextWithoutConstraint()

指定者:

hasNextWithoutConstraint 在类中 QueryDataSet

nextWithoutConstraint

public RowRecord nextWithoutConstraint()

指定者:

nextWithoutConstraint 在类中 QueryDataSet