uk.ac.gla.dcs.renaissance.mg4j.documents
Class CompactDocumentStorage

java.lang.Object
  bpiwowar.db.BatchFileStorage<Integer,bpiwowar.db.BatchFileStorage.IntegerLocation,CompactDocument>
      uk.ac.gla.dcs.renaissance.mg4j.documents.CompactDocumentStorage

All Implemented Interfaces:

Iterable<Map.Entry<Integer,CompactDocument>>

public class CompactDocumentStorage
extends bpiwowar.db.BatchFileStorage<Integer,bpiwowar.db.BatchFileStorage.IntegerLocation,CompactDocument>

This represents a set of cached documents - caches a set of tags

Author:

B. Piwowarski

Nested Class Summary

Nested classes/interfaces inherited from class bpiwowar.db.BatchFileStorage

bpiwowar.db.BatchFileStorage.IntegerLocation, bpiwowar.db.BatchFileStorage.Location<K>, bpiwowar.db.BatchFileStorage.StringLocation

Field Summary

Fields inherited from class bpiwowar.db.BatchFileStorage

locationStore

Constructor Summary

CompactDocumentStorage(com.sleepycat.je.Environment dbenv, String dbname, File home, boolean compress, boolean destroy)
Initialise a new storage

Method Summary

void	close() Close the underlying resources
Iterable<it.unimi.dsi.parser.Element>	elements()
protected CompactDocument	readObject(InputStream inputStream)
protected void	writeObject(OutputStream outputStream, CompactDocument document)

Methods inherited from class bpiwowar.db.BatchFileStorage

cleanup, closeOpenedBatches, count, finalize, getCurrentBatchIndex, getHome, getLocation, getObjectSize, getStoredObject, getStoredObject, hasObject, isCompressed, iterator, keyIterator, keys, nextBatch, outputObject, storeObject, storeObject, storeObject, storeObject, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CompactDocumentStorage

public CompactDocumentStorage(com.sleepycat.je.Environment dbenv,
                              String dbname,
                              File home,
                              boolean compress,
                              boolean destroy)
                       throws com.sleepycat.persist.evolve.IncompatibleClassException,
                              com.sleepycat.je.DatabaseException,
                              IOException

Initialise a new storage

Parameters:

dbenv - The database environment

dbname - The database name for storing documents

home - The directory where to store the files (null if using the same as the database environment)

compress - If the objects should be compressed

destroy - If the database should be destroyed when opened

Throws:

com.sleepycat.persist.evolve.IncompatibleClassException

com.sleepycat.je.DatabaseException

IOException

Method Detail

writeObject

protected void writeObject(OutputStream outputStream,
                           CompactDocument document)
                    throws IOException

Overrides:

writeObject in class bpiwowar.db.BatchFileStorage<Integer,bpiwowar.db.BatchFileStorage.IntegerLocation,CompactDocument>

Throws:

IOException

readObject

protected CompactDocument readObject(InputStream inputStream)
                              throws IOException

Overrides:

readObject in class bpiwowar.db.BatchFileStorage<Integer,bpiwowar.db.BatchFileStorage.IntegerLocation,CompactDocument>

Throws:

IOException

close

public void close()
           throws Throwable

Close the underlying resources

Overrides:

close in class bpiwowar.db.BatchFileStorage<Integer,bpiwowar.db.BatchFileStorage.IntegerLocation,CompactDocument>

Throws:

Throwable

elements

public Iterable<it.unimi.dsi.parser.Element> elements()