org.apache.iotdb.tsfile.read.controller

Class CachedChunkLoaderImpl

java.lang.Object

org.apache.iotdb.tsfile.read.controller.CachedChunkLoaderImpl

All Implemented Interfaces:

IChunkLoader

public class CachedChunkLoaderImpl
extends Object
implements IChunkLoader

Read one Chunk and cache it into a LRUCache, only used in tsfile module.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CachedChunkLoaderImpl.ChunkCacheKey

Constructor Summary

Constructors

Constructor and Description
CachedChunkLoaderImpl(TsFileSequenceReader fileSequenceReader)
CachedChunkLoaderImpl(TsFileSequenceReader fileSequenceReader, int cacheSize) constructor of ChunkLoaderImpl.

Method Summary

Modifier and Type	Method and Description
void	close() close the file reader.
IChunkReader	getChunkReader(IChunkMetadata chunkMetaData, Filter timeFilter)
Chunk	loadChunk(ChunkMetadata chunkMetaData) read all content of any chunk.

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedChunkLoaderImpl

public CachedChunkLoaderImpl(TsFileSequenceReader fileSequenceReader)

CachedChunkLoaderImpl

public CachedChunkLoaderImpl(TsFileSequenceReader fileSequenceReader,
                             int cacheSize)

constructor of ChunkLoaderImpl.

Parameters:

fileSequenceReader - file sequence reader

cacheSize - cache size

Method Detail

loadChunk

public Chunk loadChunk(ChunkMetadata chunkMetaData)
                throws IOException

Description copied from interface: IChunkLoader

read all content of any chunk.

Specified by:

loadChunk in interface IChunkLoader

Throws:

IOException

close

public void close()
           throws IOException

Description copied from interface: IChunkLoader

close the file reader.

Specified by:

close in interface IChunkLoader

Throws:

IOException

getChunkReader

public IChunkReader getChunkReader(IChunkMetadata chunkMetaData,
                                   Filter timeFilter)
                            throws IOException

Specified by:

getChunkReader in interface IChunkLoader

Throws:

IOException