org.apache.hawq.pxf.service

Interface Bridge

All Known Implementing Classes:

ReadBridge, ReadSamplingBridge, WriteBridge

public interface Bridge

Bridge interface - defines the interface of the Bridge classes. Any Bridge class acts as an iterator over Hadoop stored data, and should implement getNext (for reading) or setNext (for writing) for handling accessed data.

Method Summary

Modifier and Type	Method and Description
boolean	beginIteration()
Writable	getNext()
boolean	isThreadSafe()
boolean	setNext(java.io.DataInputStream inputStream)

Method Detail

beginIteration

boolean beginIteration()
                throws java.lang.Exception

Throws:

java.lang.Exception

getNext

Writable getNext()
          throws java.lang.Exception

Throws:

java.lang.Exception

setNext

boolean setNext(java.io.DataInputStream inputStream)
         throws java.lang.Exception

Throws:

java.lang.Exception

isThreadSafe

boolean isThreadSafe()