org.openrdf.sail.nativerdf.datastore
Class HashIndex

java.lang.Object
  org.openrdf.sail.nativerdf.datastore.HashIndex

public class HashIndex
extends Object

A file-based hash table based on B-Trees.

Author:

Arjohn Kampman

Nested Class Summary

class

HashIndex.IDIterator

Constructor Summary

HashIndex(File file)

Method Summary

void	clear()
void	close()
File	getFile()
HashIndex.IDIterator	getIDIterator(int hash) Gets an iterator that iterates over the IDs with hash codes that match the specified hash code.
void	removeID(int hash, int id) Removes the specified ID from this hash index.
void	storeID(int hash, int id) Stores an ID under the specified hash code in this hash index.
void	sync()

Methods inherited from class java.lang.Object

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

Constructor Detail

HashIndex

public HashIndex(File file)
          throws IOException

Throws:

IOException

Method Detail

getFile

public File getFile()

getIDIterator

public HashIndex.IDIterator getIDIterator(int hash)
                                   throws IOException

Gets an iterator that iterates over the IDs with hash codes that match the specified hash code.

Throws:

IOException

storeID

public void storeID(int hash,
                    int id)
             throws IOException

Stores an ID under the specified hash code in this hash index.

Throws:

IOException

removeID

public void removeID(int hash,
                     int id)
              throws IOException

Removes the specified ID from this hash index.

Throws:

IOException

sync

public void sync()
          throws IOException

Throws:

IOException

clear

public void clear()
           throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Throws:

IOException