org.apache.arrow.consumers

Class BaseAvroConsumer<T extends FieldVector>

java.lang.Object

org.apache.arrow.consumers.BaseAvroConsumer<T>

Type Parameters:

T - vector type.

All Implemented Interfaces:

AutoCloseable, Consumer<T>

Direct Known Subclasses:

AvroArraysConsumer, AvroBooleanConsumer, AvroBytesConsumer, AvroDateConsumer, AvroDecimalConsumer, AvroDoubleConsumer, AvroEnumConsumer, AvroFixedConsumer, AvroFloatConsumer, AvroIntConsumer, AvroLongConsumer, AvroMapConsumer, AvroNullConsumer, AvroStringConsumer, AvroStructConsumer, AvroTimeMicroConsumer, AvroTimeMillisConsumer, AvroTimestampMicrosConsumer, AvroTimestampMillisConsumer, AvroUnionsConsumer

public abstract class BaseAvroConsumer<T extends FieldVector>
extends Object
implements Consumer<T>

Base class for non-skippable avro consumers.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	currentIndex
protected T	vector

Constructor Summary

Constructors

Constructor and Description
BaseAvroConsumer(T vector) Constructs a base avro consumer.

Method Summary

Modifier and Type	Method and Description
void	addNull() Add null value to vector by making writer position + 1.
void	close() Close this consumer when occurs exception to avoid potential leak.
FieldVector	getVector() Get the vector within the consumer.
boolean	resetValueVector(T vector) Reset the vector within consumer for partial read purpose.
void	setPosition(int index) Set the position to write value into vector.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.arrow.consumers.Consumer

consume, skippable

Field Detail

vector

protected T extends FieldVector vector

currentIndex

protected int currentIndex

Constructor Detail

BaseAvroConsumer

public BaseAvroConsumer(T vector)

Constructs a base avro consumer.

Parameters:

vector - the vector to consume.

Method Detail

addNull

public void addNull()

Description copied from interface: Consumer

Add null value to vector by making writer position + 1.

Specified by:

addNull in interface Consumer<T extends FieldVector>

setPosition

public void setPosition(int index)

Description copied from interface: Consumer

Set the position to write value into vector.

Specified by:

setPosition in interface Consumer<T extends FieldVector>

getVector

public FieldVector getVector()

Description copied from interface: Consumer

Get the vector within the consumer.

Specified by:

getVector in interface Consumer<T extends FieldVector>

close

public void close()
           throws Exception

Description copied from interface: Consumer

Close this consumer when occurs exception to avoid potential leak.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Consumer<T extends FieldVector>

Throws:

Exception

resetValueVector

public boolean resetValueVector(T vector)

Description copied from interface: Consumer

Reset the vector within consumer for partial read purpose.

Specified by:

resetValueVector in interface Consumer<T extends FieldVector>

Returns:

true if reset is successful, false if reset is not needed.