org.egothor.store

Class ThickBarrelIn

java.lang.Object

org.egothor.store.ThickBarrelIn

All Implemented Interfaces:

AutoCloseable, BarrelReader

public class ThickBarrelIn
extends Object
implements BarrelReader

The ThickBarrelIn object is a core implementation of a Barrel that has document's metadata stored in Documents class and inverted list's metadata in Terms. This object defines a Barrel that stores its inverted lists in a single file.

Author:

Leo Galambos

Field Summary

Fields

Modifier and Type	Field and Description
String	location The directory where is the barrel stored.

Method Summary

Modifier and Type	Method and Description
void	close() Close the DB files.
SequenceWithClose<DocumentData>	getDocuments() Return an enumeration containing stored metadata of documents.
SequenceWithClose<IListReader>	getILists() Returns an enumeration of inverted lists.
long	length() Return the number of active (not deleted) documents.
void	rewind() Restart this BarrelReader so that the documents can be read again.

Methods inherited from class java.lang.Object

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

Field Detail

location

public String location

The directory where is the barrel stored.

Method Detail

getDocuments

public SequenceWithClose<DocumentData> getDocuments()

Return an enumeration containing stored metadata of documents.

Specified by:

getDocuments in interface BarrelReader

Returns:

an Enumeration of document metadata

getILists

public SequenceWithClose<IListReader> getILists()

Returns an enumeration of inverted lists.

Specified by:

getILists in interface BarrelReader

Returns:

an Enumeration of inverted lists

length

public long length()

Return the number of active (not deleted) documents.

Specified by:

length in interface BarrelReader

Returns:

the number of active documents

close

public void close()

Close the DB files.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface BarrelReader

rewind

public void rewind()
            throws IOException

Restart this BarrelReader so that the documents can be read again.

Specified by:

rewind in interface BarrelReader

Throws:

IOException