Package org.apache.druid.segment.data

Class EncodedStringDictionaryWriter

java.lang.Object

org.apache.druid.segment.data.EncodedStringDictionaryWriter

All Implemented Interfaces:

DictionaryWriter<String>, Serializer

public class EncodedStringDictionaryWriter
extends Object
implements DictionaryWriter<String>

Field Summary

Fields

Modifier and Type	Field	Description
static byte	VERSION

Constructor Summary

Constructors

Constructor	Description
EncodedStringDictionaryWriter(DictionaryWriter<byte[]> delegate, StringEncodingStrategy encodingStrategy)

Method Summary

Modifier and Type	Method	Description
String	get(int dictId)
int	getCardinality()
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.
boolean	isSorted()
void	open()
void	write(String objectToWrite)
void	writeTo(WritableByteChannel channel, FileSmoosher smoosher)	Writes serialized form of this object to the given channel.

Methods inherited from class java.lang.Object

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

Field Detail

VERSION

public static final byte VERSION

See Also:

Constant Field Values

Constructor Detail

EncodedStringDictionaryWriter

public EncodedStringDictionaryWriter(DictionaryWriter<byte[]> delegate,
                                     StringEncodingStrategy encodingStrategy)

Method Detail

isSorted

public boolean isSorted()

Specified by:

isSorted in interface DictionaryWriter<String>

open

public void open()
          throws IOException

Specified by:

open in interface DictionaryWriter<String>

Throws:

IOException

write

public void write(@Nullable
                  String objectToWrite)
           throws IOException

Specified by:

write in interface DictionaryWriter<String>

Throws:

IOException

get

@Nullable
public String get(int dictId)
           throws IOException

Specified by:

get in interface DictionaryWriter<String>

Throws:

IOException

getCardinality

public int getCardinality()

Specified by:

getCardinality in interface DictionaryWriter<String>

getSerializedSize

public long getSerializedSize()
                       throws IOException

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

Throws:

IOException

writeTo

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

Description copied from interface: Serializer

Writes serialized form of this object to the given channel. If parallel data streams are needed, they could be created with the provided smoosher.

Specified by:

writeTo in interface Serializer

Throws:

IOException