io.cdap.cdap.api.data.batch

Class Scannables

java.lang.Object

io.cdap.cdap.api.data.batch.Scannables

@Beta
public class Scannables
extends Object

Utility methods for record scanners.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Scannables.RecordMaker<KEY,VALUE,RECORD> Provides a way to convert a key and a value - as provided by a split reader - in to a single record object.

Constructor Summary

Constructors

Constructor and Description
Scannables()

Method Summary

Modifier and Type	Method and Description
static <KEY,VALUE,RECORD> RecordScanner<RECORD>	splitRecordScanner(SplitReader<KEY,VALUE> splitReader, Scannables.RecordMaker<KEY,VALUE,RECORD> recordMaker) Given a split reader and a way to convert its key/value pairs into records, return a split record scanner that delegates all operations to the underlying split reader.
static <KEY,VALUE> RecordScanner<VALUE>	valueRecordScanner(SplitReader<KEY,VALUE> splitReader) Given a split reader and a way to convert its key/value pairs into records, return a record scanner that delegates all operations to the underlying split reader.

Methods inherited from class java.lang.Object

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

Constructor Detail

Scannables

public Scannables()

Method Detail

splitRecordScanner

public static <KEY,VALUE,RECORD> RecordScanner<RECORD> splitRecordScanner(SplitReader<KEY,VALUE> splitReader,
                                                                          Scannables.RecordMaker<KEY,VALUE,RECORD> recordMaker)

Given a split reader and a way to convert its key/value pairs into records, return a split record scanner that delegates all operations to the underlying split reader.

valueRecordScanner

public static <KEY,VALUE> RecordScanner<VALUE> valueRecordScanner(SplitReader<KEY,VALUE> splitReader)

Given a split reader and a way to convert its key/value pairs into records, return a record scanner that delegates all operations to the underlying split reader.