io.druid.segment.data

Class GenericIndexedWriter<T>

java.lang.Object

io.druid.segment.data.GenericIndexedWriter<T>

All Implemented Interfaces:

Serializer

public class GenericIndexedWriter<T>
extends Object
implements Serializer

Streams arrays of objects out in the binary format described by GenericIndexed

Constructor Summary

Constructors

Constructor and Description
GenericIndexedWriter(SegmentWriteOutMedium segmentWriteOutMedium, String filenameBase, ObjectStrategy<T> strategy)
GenericIndexedWriter(SegmentWriteOutMedium segmentWriteOutMedium, String filenameBase, ObjectStrategy<T> strategy, int fileSizeLimit)

Method Summary

Modifier and Type	Method and Description
static String	generateHeaderFileName(String fileNameBase)
static String	generateValueFileName(String fileNameBase, int fileNum)
T	get(int index)
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, io.druid.java.util.common.io.smoosh.FileSmoosher) call.
void	open()
void	setObjectsNotSorted()
void	write(T 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

Constructor Detail

GenericIndexedWriter

public GenericIndexedWriter(SegmentWriteOutMedium segmentWriteOutMedium,
                            String filenameBase,
                            ObjectStrategy<T> strategy)

GenericIndexedWriter

public GenericIndexedWriter(SegmentWriteOutMedium segmentWriteOutMedium,
                            String filenameBase,
                            ObjectStrategy<T> strategy,
                            int fileSizeLimit)

Method Detail

generateValueFileName

public static String generateValueFileName(String fileNameBase,
                                           int fileNum)

generateHeaderFileName

public static String generateHeaderFileName(String fileNameBase)

open

public void open()
          throws IOException

Throws:

IOException

setObjectsNotSorted

public void setObjectsNotSorted()

write

public void write(T objectToWrite)
           throws IOException

Throws:

IOException

get

@Nullable
public T get(int index)
                throws IOException

Throws:

IOException

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, io.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