org.apache.drill.exec.store.openTSDB

Class OpenTSDBRecordReader

java.lang.Object

org.apache.drill.exec.store.AbstractRecordReader

org.apache.drill.exec.store.openTSDB.OpenTSDBRecordReader

All Implemented Interfaces:

AutoCloseable, RecordReader

public class OpenTSDBRecordReader
extends AbstractRecordReader

Field Summary

Fields inherited from class org.apache.drill.exec.store.AbstractRecordReader

DEFAULT_TEXT_COLS_TO_READ

Fields inherited from interface org.apache.drill.exec.store.RecordReader

ALLOCATOR_INITIAL_RESERVATION, ALLOCATOR_MAX_RESERVATION

Constructor Summary

Constructors

Constructor and Description
OpenTSDBRecordReader(Service client, OpenTSDBSubScan.OpenTSDBSubScanSpec subScanSpec, List<SchemaPath> projectedColumns)

Method Summary

Modifier and Type	Method and Description
void	close()
int	next() Increments this record reader forward, writing via the provided output mutator into the output batch.
void	setup(OperatorContext context, OutputMutator output) Configure the RecordReader with the provided schema and the record batch that should be written to.

Methods inherited from class org.apache.drill.exec.store.AbstractRecordReader

allocate, getColumns, getDefaultColumnsToRead, hasNext, isSkipQuery, isStarQuery, setColumns, toString, transformColumns

Methods inherited from class java.lang.Object

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

Constructor Detail

OpenTSDBRecordReader

public OpenTSDBRecordReader(Service client,
                            OpenTSDBSubScan.OpenTSDBSubScanSpec subScanSpec,
                            List<SchemaPath> projectedColumns)

Method Detail

setup

public void setup(OperatorContext context,
                  OutputMutator output)

Description copied from interface: RecordReader

Configure the RecordReader with the provided schema and the record batch that should be written to.

Parameters:

context - operator context for the reader

output - The place where output for a particular scan should be written. The record reader is responsible for mutating the set of schema values for that particular record.

next

public int next()

Description copied from interface: RecordReader

Increments this record reader forward, writing via the provided output mutator into the output batch.

Returns:

The number of additional records added to the output.

close

public void close()