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Java Source Code / Java Documentation » Search Engine » mg4j » it.unimi.dsi.mg4j.index.cluster

Source Cross Reference Class Diagram Java Document (Java Doc)

it.unimi.dsi.mg4j.search .AbstractDocumentIterator

it.unimi.dsi.mg4j.index.cluster .DocumentalMergedClusterDocumentIterator

All known Subclasses:   it.unimi.dsi.mg4j.index.cluster .DocumentalMergedClusterIndexIterator,
DocumentalMergedClusterDocumentIterator
public class DocumentalMergedClusterDocumentIterator extends AbstractDocumentIterator implements DocumentIterator(Code)
A document iterator merging iterators from local indices.
author:
   Sebastiano Vigna

Field Summary
protected int currentIterator
     The current iterator.
final protected DocumentIterator[] documentIterator
     The component document iterators.
protected boolean exhausted
     Whether there are no more documents to be returned.
final protected int[] globalDocumentPointer
     The reference array for the queue (containing global document pointers).
final protected ReferenceSet<Index> indices
     The set of indices involved in this iterator.
final protected int n
     The number of component iterators.
final protected IntHeapSemiIndirectPriorityQueue queue
     The queue of document iterator indices (offsets into DocumentalMergedClusterDocumentIterator.documentIterator and DocumentalMergedClusterDocumentIterator.usedIndex ).
final protected DocumentalClusteringStrategy strategy
     The cached strategy of the index we refer to.
final protected int[] usedIndex
     The indices corresponding to each underlying document iterator.

Constructor Summary
public DocumentalMergedClusterDocumentIterator(DocumentalClusterIndexReader indexReader, DocumentIterator[] documentIterator, int[] usedIndex)
     Creates a new document iterator for a documental cluster.

Method Summary
public boolean accept(DocumentIteratorVisitor visitor)

public boolean acceptOnTruePaths(DocumentIteratorVisitor visitor)

public void dispose()

public ReferenceSet<Index> indices()

public IntervalIterator intervalIterator()

public IntervalIterator intervalIterator(Index index)

public Reference2ReferenceMap<Index, IntervalIterator> intervalIterators()

public int nextDocument()

public int skipTo(int p)


Field Detail
currentIterator
protected int currentIterator(Code)
The current iterator.

documentIterator
final protected DocumentIterator[] documentIterator(Code)
The component document iterators.

exhausted
protected boolean exhausted(Code)
Whether there are no more documents to be returned.

globalDocumentPointer
final protected int[] globalDocumentPointer(Code)
The reference array for the queue (containing global document pointers).

indices
final protected ReferenceSet<Index> indices(Code)
The set of indices involved in this iterator.

n
final protected int n(Code)
The number of component iterators.

queue
final protected IntHeapSemiIndirectPriorityQueue queue(Code)
The queue of document iterator indices (offsets into DocumentalMergedClusterDocumentIterator.documentIterator and DocumentalMergedClusterDocumentIterator.usedIndex ).

strategy
final protected DocumentalClusteringStrategy strategy(Code)
The cached strategy of the index we refer to.

usedIndex
final protected int[] usedIndex(Code)
The indices corresponding to each underlying document iterator.

Constructor Detail
DocumentalMergedClusterDocumentIterator
public DocumentalMergedClusterDocumentIterator(DocumentalClusterIndexReader indexReader, DocumentIterator[] documentIterator, int[] usedIndex) throws IOException(Code)
Creates a new document iterator for a documental cluster.
This constructor uses an array of document iterators that it is not required to be full. This is very useful with rare terms.
Parameters:
  indexReader - the underlying index reader.
Parameters:
  documentIterator - an array of document iterators.
Parameters:
  usedIndex - an array parallel to documentIterator containing the ordinal numbersof the indices corresponding to the iterators.

Method Detail
accept
public boolean accept(DocumentIteratorVisitor visitor) throws IOException(Code)

acceptOnTruePaths
public boolean acceptOnTruePaths(DocumentIteratorVisitor visitor) throws IOException(Code)

dispose
public void dispose() throws IOException(Code)

indices
public ReferenceSet<Index> indices()(Code)

intervalIterator
public IntervalIterator intervalIterator() throws IOException(Code)

intervalIterator
public IntervalIterator intervalIterator(Index index) throws IOException(Code)

intervalIterators
public Reference2ReferenceMap<Index, IntervalIterator> intervalIterators() throws IOException(Code)

nextDocument
public int nextDocument() throws IOException(Code)

skipTo
public int skipTo(int p) throws IOException(Code)

Fields inherited from it.unimi.dsi.mg4j.search.AbstractDocumentIterator
protected int last(Code)(Java Doc)
protected int next(Code)(Java Doc)

Methods inherited from it.unimi.dsi.mg4j.search.AbstractDocumentIterator
public int document()(Code)(Java Doc)
public boolean hasNext()(Code)(Java Doc)
public IntervalIterator iterator()(Code)(Java Doc)
public int nextInt()(Code)(Java Doc)

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