org.apache.iotdb.db.query.dataset

接口 IUDFInputDataSet

所有已知实现类:

MultiInputColumnIntermediateLayer, RawQueryDataSetWithValueFilter, UDFInputDataSet, UDFRawQueryInputDataSetWithoutValueFilter

public interface IUDFInputDataSet

The input data set interface for a UDFPlan

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.

方法详细资料

getDataTypes

List<TSDataType> getDataTypes()

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

hasNextRowInObjects

boolean hasNextRowInObjects()
                     throws IOException

Whether the data set has next row.

抛出:

IOException

nextRowInObjects

Object[] nextRowInObjects()
                   throws IOException

Get the next row for UDFPlan input.

The last element in the row is the timestamp.

抛出:

IOException