com.aliyun.odps.data

Interface RecordReader

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

DefaultRecordReader, com.aliyun.odps.commons.proto.ProtobufRecordStreamReader, RawTunnelRecordReader, TunnelRecordReader

public interface RecordReader
extends Closeable

RecordReader用来读取记录

Method Summary

Modifier and Type	Method and Description
Record	read() 读取一条记录

Methods inherited from interface java.io.Closeable

close

Method Detail

read

Record read()
     throws IOException

读取一条记录

Returns:

成功读到记录返回Record对象, 读取完成返回null

Throws:

IOException - 读取过程发生异常, 发生异常后不可重试