Package cz.drg.pregrouper.process.fileRead

Class OffsetShardReader

java.lang.Object

cz.drg.pregrouper.process.fileRead.OffsetShardReader

public class OffsetShardReader
extends Object

Reads polozky offset shards, which contain metadata about dokladu and their byte offsets in sorted polozky files. Data in offset shards are written in batches of 18 bytes, where the first 8 bytes are long idDokladu, the next 8 bytes are long byte offset of the first line in a sorted polozky file, and last 2 bytes are short how many extra lines/polozek, besides the first one, the doklad have - used for readLine in RAF to get all related polozky.

Constructor Summary

Constructors

Constructor	Description
OffsetShardReader()

Method Summary

Modifier and Type	Method	Description
Map<Long,OffsetAndLineLength>	readShardFile(String filename)
Map<Long,OffsetAndLineLength>	readShardFile(Path filePath)

Methods inherited from class java.lang.Object

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

Constructor Details

OffsetShardReader

public OffsetShardReader()

Method Details

readShardFile

public Map<Long,OffsetAndLineLength> readShardFile(Path filePath)
                                            throws IOException

Throws:

IOException

readShardFile

public Map<Long,OffsetAndLineLength> readShardFile(String filename)
                                            throws IOException

Throws:

IOException