Package org.apache.druid.segment.nested

Class VariantColumnSerializer.InternalSerializer

java.lang.Object

org.apache.druid.segment.nested.VariantColumnSerializer.InternalSerializer

All Implemented Interfaces:

Serializer

Enclosing class:

VariantColumnSerializer

public static class VariantColumnSerializer.InternalSerializer
extends Object
implements Serializer

Internal serializer used to serialize a VariantColumn. Encapsulates just the logic to write out the column to a FileSmoosher without the parts to update the dictionaries themselves, so that it can be reused. Created by VariantColumnSerializer once it is closed for writes.

Constructor Summary

Constructors

Constructor

Description

InternalSerializer(String columnName, Byte variantTypeSetByte, DictionaryWriter<String> dictionaryWriter, FixedIndexedWriter<Long> longDictionaryWriter, FixedIndexedWriter<Double> doubleDictionaryWriter, FrontCodedIntArrayIndexedWriter arrayDictionaryWriter, SingleValueColumnarIntsSerializer encodedValueSerializer, GenericIndexedWriter<ImmutableBitmap> bitmapIndexWriter, FixedIndexedIntWriter arrayElementDictionaryWriter, GenericIndexedWriter<ImmutableBitmap> arrayElementIndexWriter, DictionaryIdLookup dictionaryIdLookup, boolean writeDictionary)

Method Summary

Modifier and Type	Method	Description
long	getSerializedSize()	Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a Serializer.writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.java.util.common.io.smoosh.FileSmoosher) call.
void	writeTo(WritableByteChannel channel, FileSmoosher smoosher)	Writes the serialized form of this object.

Methods inherited from class java.lang.Object

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

Constructor Details

InternalSerializer

public InternalSerializer(String columnName,
 Byte variantTypeSetByte,
 DictionaryWriter<String> dictionaryWriter,
 FixedIndexedWriter<Long> longDictionaryWriter,
 FixedIndexedWriter<Double> doubleDictionaryWriter,
 FrontCodedIntArrayIndexedWriter arrayDictionaryWriter,
 SingleValueColumnarIntsSerializer encodedValueSerializer,
 GenericIndexedWriter<ImmutableBitmap> bitmapIndexWriter,
 FixedIndexedIntWriter arrayElementDictionaryWriter,
 GenericIndexedWriter<ImmutableBitmap> arrayElementIndexWriter,
 DictionaryIdLookup dictionaryIdLookup,
 boolean writeDictionary)

Method Details

getSerializedSize

public long getSerializedSize()

Description copied from interface: Serializer

Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a Serializer.writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.java.util.common.io.smoosh.FileSmoosher) call.

Specified by:

getSerializedSize in interface Serializer

writeTo

public void writeTo(WritableByteChannel channel,
 FileSmoosher smoosher)
             throws IOException

Description copied from interface: Serializer

Writes the serialized form of this object. The entire object may be written to the provided channel, or the object may be split over the provided channel and files added to the

invalid @link

{@link FileSmoosher],

where additional channels can be created via FileSmoosher.addWithSmooshedWriter(String, long). The latter approach is useful when the serialized form of the object is too large for a single smoosh container. At the time this javadoc was written, the max smoosh container size is limit to the max ByteBuffer size.

Specified by:

writeTo in interface Serializer

Throws:

IOException