org.apache.iotdb.db.query.dataset

类 UDFInputDataSet

java.lang.Object

org.apache.iotdb.db.query.dataset.UDFInputDataSet

所有已实现的接口:

IUDFInputDataSet

public class UDFInputDataSet
extends Object
implements IUDFInputDataSet

the input data set of an UDAF query. It accepts any query results as input instead of raw timeseries data

构造器概要

构造器

构造器和说明
UDFInputDataSet(QueryDataSet dataSet, List<TSDataType> dataTypes)

方法概要

限定符和类型	方法和说明
List<TSDataType>	getDataTypes() returns the input data types, except the timestamp column(the last column).
boolean	hasNextRowInObjects() Whether the data set has next row.
Object[]	nextRowInObjects() Get the next row for UDFPlan input.

从类继承的方法 java.lang.Object

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

构造器详细资料

UDFInputDataSet

public UDFInputDataSet(QueryDataSet dataSet,
                       List<TSDataType> dataTypes)

方法详细资料

getDataTypes

public List<TSDataType> getDataTypes()

从接口复制的说明: IUDFInputDataSet

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

指定者:

getDataTypes 在接口中 IUDFInputDataSet

hasNextRowInObjects

public boolean hasNextRowInObjects()
                            throws IOException

从接口复制的说明: IUDFInputDataSet

Whether the data set has next row.

指定者:

hasNextRowInObjects 在接口中 IUDFInputDataSet

抛出:

IOException

nextRowInObjects

public Object[] nextRowInObjects()
                          throws IOException

从接口复制的说明: IUDFInputDataSet

Get the next row for UDFPlan input.

The last element in the row is the timestamp.

指定者:

nextRowInObjects 在接口中 IUDFInputDataSet

抛出:

IOException