Java AtomicReaderContext.reader方法代碼示例

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
protected DocsAndPositionsEnum getPosEnum(IndexReader r, int docid, Term t)
		throws IOException {
	List<AtomicReaderContext> leaves = r.getContext().leaves();
	for (AtomicReaderContext context : leaves) {
		AtomicReader reader = context.reader();
		DocsAndPositionsEnum termPositions = reader.termPositionsEnum(t);
		int doc;
		while ((doc = termPositions.nextDoc()) != DocsEnum.NO_MORE_DOCS
				&& doc != docid) {
		}
		if (doc != DocsEnum.NO_MORE_DOCS) {
			return termPositions;
		}
	}
	assertFalse("Expected positions enum for doc " + docid, true);
	return null; // will never come here
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
public void testReuseDocsEnumNoReuse() throws IOException {
  Directory dir = newDirectory();
  Codec cp = TestUtil.alwaysPostingsFormat(new Lucene40RWPostingsFormat());
  RandomIndexWriter writer = new RandomIndexWriter(random(), dir,
      newIndexWriterConfig(new MockAnalyzer(random())).setCodec(cp));
  int numdocs = atLeast(20);
  createRandomIndex(numdocs, writer, random());
  writer.commit();

  DirectoryReader open = DirectoryReader.open(dir);
  for (AtomicReaderContext ctx : open.leaves()) {
    AtomicReader indexReader = ctx.reader();
    Terms terms = indexReader.terms("body");
    TermsEnum iterator = terms.iterator(null);
    IdentityHashMap<DocsEnum, Boolean> enums = new IdentityHashMap<>();
    MatchNoBits bits = new Bits.MatchNoBits(indexReader.maxDoc());
    while ((iterator.next()) != null) {
      DocsEnum docs = iterator.docs(random().nextBoolean() ? bits : new Bits.MatchNoBits(indexReader.maxDoc()), null, random().nextBoolean() ? DocsEnum.FLAG_FREQS : DocsEnum.FLAG_NONE);
      enums.put(docs, true);
    }
    
    assertEquals(terms.size(), enums.size());
  }
  IOUtils.close(writer, open, dir);
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
public SpatialScorer(AtomicReaderContext readerContext, Bits acceptDocs, SpatialWeight w, float qWeight) throws IOException {
  super(w);
  this.weight = w;
  this.qWeight = qWeight;
  this.reader = readerContext.reader();
  this.maxDoc = reader.maxDoc();
  this.acceptDocs = acceptDocs;
  latVals = latSource.getValues(weight.latContext, readerContext);
  lonVals = lonSource.getValues(weight.lonContext, readerContext);

  this.lonMin = SpatialDistanceQuery.this.lonMin;
  this.lonMax = SpatialDistanceQuery.this.lonMax;
  this.lon2Min = SpatialDistanceQuery.this.lon2Min;
  this.lon2Max = SpatialDistanceQuery.this.lon2Max;
  this.latMin = SpatialDistanceQuery.this.latMin;
  this.latMax = SpatialDistanceQuery.this.latMax;
  this.lon2 = SpatialDistanceQuery.this.lon2;
  this.calcDist = SpatialDistanceQuery.this.calcDist;

  this.latCenterRad = SpatialDistanceQuery.this.latCenter * DistanceUtils.DEGREES_TO_RADIANS;
  this.lonCenterRad = SpatialDistanceQuery.this.lonCenter * DistanceUtils.DEGREES_TO_RADIANS;
  this.latCenterRad_cos = this.calcDist ? Math.cos(latCenterRad) : 0;
  this.dist = SpatialDistanceQuery.this.dist;
  this.planetRadius = SpatialDistanceQuery.this.planetRadius;

}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
private void assertFreqPosAndPayload(Term t, int[] expFreq, int[][] expPos,
		int[][][] expPay, int numAtomicReaders) throws IOException {
	List<AtomicReaderContext> leaves = r.getContext().leaves();
	for (AtomicReaderContext context : leaves) {
		AtomicReader reader = context.reader();
		DocsAndPositionsEnum termPositions = reader.termPositionsEnum(t);
		int docIndex = 0;
		while (termPositions.nextDoc() != DocsEnum.NO_MORE_DOCS) {
			assertEquals("Incorrect doc " + docIndex + " freq",
					expFreq[docIndex], termPositions.freq());
			assertEquals("Incorrect doc " + docIndex + " pos length",
					expPos[docIndex].length, termPositions.freq());
			int posIndex = 0;
			while (posIndex < termPositions.freq()) {
				int position = termPositions.nextPosition();
				assertEquals("Incorrect pos " + posIndex + " in doc "
						+ docIndex, expPos[docIndex][posIndex], position);
				BytesRef payload = termPositions.getPayload();
				int[] expPayload = expPay[docIndex][posIndex];
				String[] payloadDesc = new String[] { "left", "right",
						"depth", "parent" };
				for (int j = 0; j < 4; j++) {
					assertEquals(
							"Incorrect " + payloadDesc[j] + " payload",
							expPayload[j],
							payload.bytes[payload.offset + j]);
				}
				posIndex++;
			}
			docIndex++;
		}
		numAtomicReaders++;
	}
	assertEquals("Expected one atomic reader", 1, numAtomicReaders);
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
private FixedBitSet initialResult(AtomicReaderContext context, int logic, int[] index)
    throws IOException {
  AtomicReader reader = context.reader();
  FixedBitSet result = new FixedBitSet(reader.maxDoc());
  if (logic == AND) {
    result.or(getDISI(chain[index[0]], context));
    ++index[0];
  } else if (logic == ANDNOT) {
    result.or(getDISI(chain[index[0]], context));
    result.flip(0, reader.maxDoc()); // NOTE: may set bits for deleted docs.
    ++index[0];
  }
  return result;
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
public AllScorer(AtomicReaderContext context, Bits acceptDocs, FunctionWeight w, float qWeight) throws IOException {
  super(w);
  this.weight = w;
  this.qWeight = qWeight;
  this.reader = context.reader();
  this.maxDoc = reader.maxDoc();
  this.acceptDocs = acceptDocs;
  vals = func.getValues(weight.context, context);
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
public BaseTermsEnumTraverser(AtomicReaderContext context, Bits acceptDocs) throws IOException {
  this.context = context;
  AtomicReader reader = context.reader();
  this.acceptDocs = acceptDocs;
  this.maxDoc = reader.maxDoc();
  Terms terms = reader.terms(fieldName);
  if (terms != null)
    this.termsEnum = terms.iterator(null);
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
/**
 * Takes the categories from the given taxonomy directory, and adds the
 * missing ones to this taxonomy. Additionally, it fills the given
 * {@link OrdinalMap} with a mapping from the original ordinal to the new
 * ordinal.
 */
public void addTaxonomy(Directory taxoDir, OrdinalMap map) throws IOException {
  ensureOpen();
  DirectoryReader r = DirectoryReader.open(taxoDir);
  try {
    final int size = r.numDocs();
    final OrdinalMap ordinalMap = map;
    ordinalMap.setSize(size);
    int base = 0;
    TermsEnum te = null;
    DocsEnum docs = null;
    for (final AtomicReaderContext ctx : r.leaves()) {
      final AtomicReader ar = ctx.reader();
      final Terms terms = ar.terms(Consts.FULL);
      te = terms.iterator(te);
      while (te.next() != null) {
        FacetLabel cp = new FacetLabel(FacetsConfig.stringToPath(te.term().utf8ToString()));
        final int ordinal = addCategory(cp);
        docs = te.docs(null, docs, DocsEnum.FLAG_NONE);
        ordinalMap.addMapping(docs.nextDoc() + base, ordinal);
      }
      base += ar.maxDoc(); // no deletions, so we're ok
    }
    ordinalMap.addDone();
  } finally {
    r.close();
  }
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
private void assertOrdinalsExist(String field, IndexReader ir) throws IOException {
  for (AtomicReaderContext context : ir.leaves()) {
    AtomicReader r = context.reader();
    if (r.getBinaryDocValues(field) != null) {
      return; // not all segments must have this DocValues
    }
  }
  fail("no ordinals found for " + field);
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
private void verify(Directory dir) throws Exception {
  DirectoryReader ir = DirectoryReader.open(dir);
  for (AtomicReaderContext leaf : ir.leaves()) {
    AtomicReader leafReader = leaf.reader();
    assertTerms(leafReader.terms("field1docs"), leafReader.terms("field2freqs"), true);
    assertTerms(leafReader.terms("field3positions"), leafReader.terms("field4offsets"), true);
    assertTerms(leafReader.terms("field4offsets"), leafReader.terms("field5payloadsFixed"), true);
    assertTerms(leafReader.terms("field5payloadsFixed"), leafReader.terms("field6payloadsVariable"), true);
    assertTerms(leafReader.terms("field6payloadsVariable"), leafReader.terms("field7payloadsFixedOffsets"), true);
    assertTerms(leafReader.terms("field7payloadsFixedOffsets"), leafReader.terms("field8payloadsVariableOffsets"), true);
  }
  ir.close();
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
@Override
public Scorer scorer(AtomicReaderContext context, Bits acceptDocs) throws IOException {
  return new MatchAllScorer(context.reader(), acceptDocs, this, queryWeight);
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
public LuceneIndex(File path, boolean readOnly, Analyzer analyzer, Index... indices) throws Exception {
	// fieldsToSkip.add(Variable.CONTENT);
	fieldsToSkip.add(Variable.BYTES);
	this.readOnly = readOnly;

	if (analyzer != null) {
		this.analyzer = analyzer;
	} else {
		this.analyzer = new StandardAnalyzer(LUCENEVERSION);
	}

	if (indices.length == 1) {
		getAlgorithmMap().put("Index0", (Algorithm) indices[0]);
		setLabel(((Algorithm) indices[0]).getLabel());
	} else if (indices.length > 1) {
		MultiIndex multiIndex = new MultiIndex(indices);
		getAlgorithmMap().put("Index0", multiIndex);
		setLabel(multiIndex.getLabel());
	}

	if (path == null) {
		path = File.createTempFile("lucene", "");
		path.delete();
		path.mkdir();
		path.deleteOnExit();
		readOnly = false;
	}

	fields.add(Sample.ID);

	this.path = path;

	directory = FSDirectory.open(path);
	if (DirectoryReader.indexExists(directory)) {
		if (!readOnly) {
			if (IndexWriter.isLocked(directory)) {
				IndexWriter.unlock(directory);
			}
			indexWriter = new IndexWriter(directory, new IndexWriterConfig(LUCENEVERSION, analyzer));
		}

		for (AtomicReaderContext rc : getIndexSearcher().getIndexReader().leaves()) {
			AtomicReader ar = rc.reader();
			FieldInfos fis = ar.getFieldInfos();
			for (FieldInfo fi : fis) {
				fields.add(fi.name);
			}
		}

	} else if (!readOnly) {
		indexWriter = new IndexWriter(directory,
				new IndexWriterConfig(LUCENEVERSION, analyzer).setOpenMode(OpenMode.CREATE));
	}

	setSamples(new LuceneSampleMap(this));

}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
FixedBitSet[] split(AtomicReaderContext readerContext) throws IOException {
  AtomicReader reader = readerContext.reader();
  FixedBitSet[] docSets = new FixedBitSet[numPieces];
  for (int i=0; i<docSets.length; i++) {
    docSets[i] = new FixedBitSet(reader.maxDoc());
  }
  Bits liveDocs = reader.getLiveDocs();

  Fields fields = reader.fields();
  Terms terms = fields==null ? null : fields.terms(field.getName());
  TermsEnum termsEnum = terms==null ? null : terms.iterator(null);
  if (termsEnum == null) return docSets;

  BytesRef term = null;
  DocsEnum docsEnum = null;

  CharsRef idRef = new CharsRef();
  for (;;) {
    term = termsEnum.next();
    if (term == null) break;

    // figure out the hash for the term

    // FUTURE: if conversion to strings costs too much, we could
    // specialize and use the hash function that can work over bytes.
    field.getType().indexedToReadable(term, idRef);
    String idString = idRef.toString();

    if (splitKey != null) {
      // todo have composite routers support these kind of things instead
      String part1 = getRouteKey(idString);
      if (part1 == null)
        continue;
      if (!splitKey.equals(part1))  {
        continue;
      }
    }

    int hash = 0;
    if (hashRouter != null) {
      hash = hashRouter.sliceHash(idString, null, null, null);
    }

    docsEnum = termsEnum.docs(liveDocs, docsEnum, DocsEnum.FLAG_NONE);
    for (;;) {
      int doc = docsEnum.nextDoc();
      if (doc == DocIdSetIterator.NO_MORE_DOCS) break;
      if (ranges == null) {
        docSets[currPartition].set(doc);
        currPartition = (currPartition + 1) % numPieces;
      } else  {
        for (int i=0; i<rangesArr.length; i++) {      // inner-loop: use array here for extra speed.
          if (rangesArr[i].includes(hash)) {
            docSets[i].set(doc);
          }
        }
      }
    }
  }

  return docSets;
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
public LiveDocsReader(AtomicReaderContext context, FixedBitSet liveDocs) throws IOException {
  super(context.reader());
  this.liveDocs = liveDocs;
  this.numDocs = liveDocs.cardinality();
}
 

import org.apache.lucene.index.AtomicReaderContext; //導入方法依賴的package包/類
/**
 * Returns the set of document ids matching all queries.
 * This method is cache-aware and attempts to retrieve the answer from the cache if possible.
 * If the answer was not cached, it may have been inserted into the cache as a result of this call.
 * This method can handle negative queries.
 * <p>
 * The DocSet returned should <b>not</b> be modified.
 */
public DocSet getDocSet(List<Query> queries) throws IOException {

  if(queries != null) {
    for(Query q : queries) {
      if(q instanceof ScoreFilter) {
        return getDocSetScore(queries);
      }
    }
  }

  ProcessedFilter pf = getProcessedFilter(null, queries);
  if (pf.answer != null) return pf.answer;


  DocSetCollector setCollector = new DocSetCollector(maxDoc()>>6, maxDoc());
  Collector collector = setCollector;
  if (pf.postFilter != null) {
    pf.postFilter.setLastDelegate(collector);
    collector = pf.postFilter;
  }

  for (final AtomicReaderContext leaf : leafContexts) {
    final AtomicReader reader = leaf.reader();
    final Bits liveDocs = reader.getLiveDocs();   // TODO: the filter may already only have liveDocs...
    DocIdSet idSet = null;
    if (pf.filter != null) {
      idSet = pf.filter.getDocIdSet(leaf, liveDocs);
      if (idSet == null) continue;
    }
    DocIdSetIterator idIter = null;
    if (idSet != null) {
      idIter = idSet.iterator();
      if (idIter == null) continue;
    }

    collector.setNextReader(leaf);
    int max = reader.maxDoc();

    if (idIter == null) {
      for (int docid = 0; docid<max; docid++) {
        if (liveDocs != null && !liveDocs.get(docid)) continue;
        collector.collect(docid);
      }
    } else {
      for (int docid = -1; (docid = idIter.advance(docid+1)) < max; ) {
        collector.collect(docid);
      }
    }
  }

  if(collector instanceof DelegatingCollector) {
    ((DelegatingCollector) collector).finish();
  }

  return setCollector.getDocSet();
}