com.sun.labs.minion.indexer.entry
Class IDFreqEntry

java.lang.Object
  com.sun.labs.minion.indexer.entry.BaseEntry
      com.sun.labs.minion.indexer.entry.SinglePostingsEntry
          com.sun.labs.minion.indexer.entry.IDFreqEntry

All Implemented Interfaces:

Entry, IndexEntry, MergeableEntry, QueryEntry, java.lang.Comparable

public class IDFreqEntry
extends SinglePostingsEntry
implements MergeableEntry

Field Summary

Fields inherited from class com.sun.labs.minion.indexer.entry.SinglePostingsEntry

logTag, n, offset, p, size, tsize

Fields inherited from class com.sun.labs.minion.indexer.entry.BaseEntry

dict, id, name, postIn

Constructor Summary

IDFreqEntry()

IDFreqEntry(java.lang.Object name)

Method Summary

Entry	getEntry(java.lang.Object name) Gets a new entry with the given name.
protected Postings	getPostings() Gets the appropriate postings type for the class.
protected Postings	getPostings(ReadableBuffer input) Reads the postings for this class, returning a set of postings useful at query time.
void	merge(QueryEntry qe, int[] idMap) Merges postings from another entry into this one.

Methods inherited from class com.sun.labs.minion.indexer.entry.SinglePostingsEntry

add, append, copyData, decodePostingsInfo, encodePostingsInfo, getEntry, getMaxFDT, getN, getNumChannels, getTotalOccurrences, hasFieldInformation, hasPositionInformation, iterator, readPostings, writePostings

Methods inherited from class com.sun.labs.minion.indexer.entry.BaseEntry

compareTo, getID, getName, getPartition, setDictionary, setID, setName, setPostingsInput, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sun.labs.minion.indexer.entry.IndexEntry

add, append, encodePostingsInfo, setID, setName, writePostings

Methods inherited from interface com.sun.labs.minion.indexer.entry.Entry

getEntry, getID, getMaxFDT, getN, getName, getNumChannels, getPartition, getTotalOccurrences, setDictionary

Methods inherited from interface java.lang.Comparable

compareTo

Constructor Detail

IDFreqEntry

public IDFreqEntry()

IDFreqEntry

public IDFreqEntry(java.lang.Object name)

Method Detail

getEntry

public Entry getEntry(java.lang.Object name)

Description copied from interface: Entry

Gets a new entry with the given name.

Specified by:

getEntry in interface Entry

Parameters:

name - the name that we want to give the entry.

Returns:

a new entry.

getPostings

protected Postings getPostings()

Gets the appropriate postings type for the class. These postings should be useable for indexing.

Specified by:

getPostings in class SinglePostingsEntry

Returns:

Postings suitable for use when indexing.

getPostings

protected Postings getPostings(ReadableBuffer input)

Reads the postings for this class, returning a set of postings useful at query time.

Specified by:

getPostings in class SinglePostingsEntry

Parameters:

input - The buffer containing the postings read from the postings file.

Returns:

The postings for this entry.

merge

public void merge(QueryEntry qe,
                  int[] idMap)

Description copied from interface: MergeableEntry

Merges postings from another entry into this one.

Specified by:

merge in interface MergeableEntry

Parameters:

qe - The entry that we want to append onto this one.

idMap - A map from old IDs in the given postings to new IDs with gaps removed for deleted data. If this is null, then there are no deleted documents.