org.springframework.data.hadoop.hbase

Interface ResultsExtractor<T>

public interface ResultsExtractor<T>

Callback handling scanner results. Implementations of this interface perform the actula work of extracting results from the ResultScanner but without having to worry about exception handling or resource management.

Author:

Costin Leau

Method Summary

Methods

Modifier and Type	Method and Description
T	extractData(org.apache.hadoop.hbase.client.ResultScanner results) Implementations must implement this method to process the entire ResultScanner.

Method Detail

extractData

T extractData(org.apache.hadoop.hbase.client.ResultScanner results)
              throws java.lang.Exception

Implementations must implement this method to process the entire ResultScanner.

Parameters:

results - ResultScanner to extract data from. Implementations should not close this; it will be closed automatically by the calling HbaseTemplate

Returns:

an arbitrary result object, or null if none (the extractor will typically be stateful in the latter case).

Throws:

java.lang.Exception - if an Hbase exception is encountered