org.egothor.store
Class IListMetadata

java.lang.Object
  org.egothor.store.IListMetadata

All Implemented Interfaces:

IListMetadata

Direct Known Subclasses:

IListMetadataRead, IListMetadataWrite

public class IListMetadata
extends java.lang.Object
implements IListMetadata

The IListMetadata class defines the core metadata of the inverted list, its length. The length of the list will be needed for many calculations, for example, calculation of inverted document frequency. Other properties are not important for core operations so they are implemented in sub-classes.

Author:

Leo Galambos

Field Summary

java.lang.String

term Metadata is related to this term, however this String is never counted as a part of metadata.

Constructor Summary

protected	IListMetadata()
protected	IListMetadata(java.lang.String term, long offset, long list_len)

Method Summary

long	getLength() Return the length of the list.
boolean	isBitmap()
boolean	isSeparated()

Methods inherited from class java.lang.Object

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

Field Detail

term

public java.lang.String term

Metadata is related to this term, however this String is never counted as a part of metadata.

Constructor Detail

IListMetadata

protected IListMetadata()

IListMetadata

protected IListMetadata(java.lang.String term,
                        long offset,
                        long list_len)

Method Detail

isSeparated

public boolean isSeparated()

isBitmap

public boolean isBitmap()

getLength

public long getLength()

Return the length of the list. The length counts all list items, both removed and active documents.

Specified by:

getLength in interface IListMetadata

Returns:

the length