io.cdap.cdap.api.dataset.lib

Class TimeseriesTable.TimeseriesTableRecordsReader

java.lang.Object

io.cdap.cdap.api.data.batch.SplitReader<KEY,VALUE>

io.cdap.cdap.api.data.batch.SplitReaderBase<KEY,VALUE>

io.cdap.cdap.api.data.batch.IteratorBasedSplitReader<byte[],TimeseriesTable.Entry>

io.cdap.cdap.api.dataset.lib.TimeseriesTable.TimeseriesTableRecordsReader

Enclosing class:

TimeseriesTable

public final class TimeseriesTable.TimeseriesTableRecordsReader
extends IteratorBasedSplitReader<byte[],TimeseriesTable.Entry>

A record reader for time series.

Constructor Summary

Constructors

Constructor and Description
TimeseriesTableRecordsReader()

Method Summary

Modifier and Type	Method and Description
Iterator<TimeseriesTable.Entry>	createIterator(Split split) Creates an iterator to iterate through all records of a given split.
protected byte[]	getKey(TimeseriesTable.Entry entry) Gets the key belonging to the key/value record provided by the iterator.

Methods inherited from class io.cdap.cdap.api.data.batch.IteratorBasedSplitReader

fetchNextKeyValue, initialize

Methods inherited from class io.cdap.cdap.api.data.batch.SplitReaderBase

close, getCurrentKey, getCurrentValue, nextKeyValue, setCurrentKeyValue

Methods inherited from class io.cdap.cdap.api.data.batch.SplitReader

getProgress

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeseriesTableRecordsReader

public TimeseriesTableRecordsReader()

Method Detail

createIterator

public Iterator<TimeseriesTable.Entry> createIterator(Split split)

Description copied from class: IteratorBasedSplitReader

Creates an iterator to iterate through all records of a given split.

Specified by:

createIterator in class IteratorBasedSplitReader<byte[],TimeseriesTable.Entry>

Parameters:

split - Split to iterate through.

Returns:

An instance of Iterator.

getKey

protected byte[] getKey(TimeseriesTable.Entry entry)

Description copied from class: IteratorBasedSplitReader

Gets the key belonging to the key/value record provided by the iterator.

Specified by:

getKey in class IteratorBasedSplitReader<byte[],TimeseriesTable.Entry>

Parameters:

entry - The value of the key/value record.

Returns:

The key of the key/value record.