Java TermPositions类代码示例

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
final Scorer scorer(IndexReader reader) throws IOException {
   if (terms.size() == 0)			  // optimize zero-term case
     return null;
   if (terms.size() == 1) {			  // optimize one-term case
     Term term = (Term)terms.elementAt(0);
     TermDocs docs = reader.termDocs(term);
     if (docs == null)
return null;
     return new TermScorer(docs, reader.norms(term.field()), weight);
   }

   TermPositions[] tps = new TermPositions[terms.size()];
   for (int i = 0; i < terms.size(); i++) {
     TermPositions p = reader.termPositions((Term)terms.elementAt(i));
     if (p == null)
return null;
     tps[i] = p;
   }

   if (slop == 0)				  // optimize exact case
     return new ExactPhraseScorer(tps, reader.norms(field), weight);
   else
     return
new SloppyPhraseScorer(tps, slop, reader.norms(field), weight);

 }
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
public Set<FieldValue> getTerms(int docId, Set<String> fieldNameSet) throws IOException {
	TermPositions termPosition = indexReader.termPositions();
	Set<FieldValue> fieldValueSet = new HashSet<FieldValue>();
	for (String fieldName : fieldNameSet) {
		List<FieldValueItem> fieldValueItemList = new ArrayList<FieldValueItem>();
		TermEnum termEnum = indexReader.terms(new Term(fieldName, ""));
		if (termEnum == null)
			continue;
		Term term = termEnum.term();
		if (!term.field().equals(fieldName))
			continue;
		do {
			term = termEnum.term();
			if (!term.field().equals(fieldName))
				break;
			termPosition.seek(term);
			if (!termPosition.skipTo(docId) || termPosition.doc() != docId)
				continue;
			fieldValueItemList.add(new FieldValueItem(FieldValueOriginEnum.TERM_ENUM, term.text()));
		} while (termEnum.next());
		termEnum.close();
		if (fieldValueItemList.size() > 0)
			fieldValueSet.add(new FieldValue(fieldName, fieldValueItemList));
	}
	return fieldValueSet;
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
@Override
public Result joinTermAllMatches(Result result, TermPositions term,
		NodeDataBuffer previous, byte[] payloadBuffer,
		int[] positionsBuffer, TreeAxis axis, int termId) throws IOException {
	int freq = term.freq();
	int bufferPtr = 0;
	int validInstances = 0;

	for (int i = 0; i < freq && validInstances < NodeDataBuffer.BUFFER_SIZE; i++) {
		positionsBuffer[validInstances] = term.nextPosition();
		int position = positionsBuffer[validInstances];
		if (shouldLoadPayload(position, previous)) {
			bufferPtr = NodeDataBuffer.PAYLOAD_LENGTH * validInstances;
			term.getPayload(payloadBuffer, bufferPtr);
			boolean updatedValidInstanceFlag = false;
			for (int j = previous.size - 1; j >= 0
					&& validInstances < NodeDataBuffer.BUFFER_SIZE
					&& position <= previous.positions[j]; j--) {
				byte[] start = previous.getAsBytes(j);
				if (logic.joinBytesWithBytes(start, 0, payloadBuffer,
						bufferPtr)) {
					if (!updatedValidInstanceFlag) {
						validInstances++;
						updatedValidInstanceFlag = true;
					}
					byte[] end = getByteArray(payloadBuffer, bufferPtr);
					result.addNew(start, end, axis, termId);
				}
			}
		}
	}
	return result;
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
@Override
public int joinTerm(TermPositions term, NodeDataBuffer previous,
		byte[] payloadBuffer, int[] positionsBuffer,
		LookaheadOptimization optimization, boolean stopAtFirst)
		throws IOException {
	int freq = term.freq();
	int bufferPtr = 0;
	int validInstances = 0;
	int val;

	for (int i = 0; i < freq && validInstances < NodeDataBuffer.BUFFER_SIZE; i++) {
		term.nextPosition();
		bufferPtr = NodeDataBuffer.PAYLOAD_LENGTH * validInstances;
		term.getPayload(payloadBuffer, bufferPtr);
		val = LookaheadOptimization.WRITE;
		if (!optimization.equals(LookaheadOptimization.NONE)
				&& validInstances > 0) {
			val = optimization.check(payloadBuffer, validInstances - 1);
			if (val == LookaheadOptimization.IGNORE)
				continue;
		}
		for (int j = previous.size - 1; j >= 0
				&& validInstances < NodeDataBuffer.BUFFER_SIZE; j--) {
			if (logic.joinBufWithBytes(previous, j, payloadBuffer,
					bufferPtr)) {
				if (val == LookaheadOptimization.WRITE) {
					validInstances++;
				} else if (val == LookaheadOptimization.OVERWRITE) {
					overwritePrevPayloadBuf(payloadBuffer, validInstances);
				}
				if (stopAtFirst)
					return 1;
				break;
			}
		}
	}
	return validInstances;
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
@Override
public Result joinTermAllMatches(Result result, TermPositions term,
		NodeDataBuffer previous, byte[] payloadBuffer,
		int[] positionsBuffer, TreeAxis axis, int termId) throws IOException {
	int freq = term.freq();
	int bufferPtr = 0;
	int validInstances = 0;

	for (int i = 0; i < freq && validInstances < NodeDataBuffer.BUFFER_SIZE; i++) {
		positionsBuffer[validInstances] = term.nextPosition();
		int position = positionsBuffer[validInstances];
		if (shouldLoadPayload(position, previous)) {
			bufferPtr = NodeDataBuffer.PAYLOAD_LENGTH * validInstances;
			term.getPayload(payloadBuffer, bufferPtr);
			boolean updatedValidInstanceFlag = false;
			for (int j = 0; j < previous.size()
					&& validInstances < NodeDataBuffer.BUFFER_SIZE
					&& position >= previous.positions[j]; j++) {
				byte[] start = previous.getAsBytes(j);
				if (logic.joinBytesWithBytes(start, 0, payloadBuffer,
						bufferPtr)) {
					if (!updatedValidInstanceFlag) {
						validInstances++;
						updatedValidInstanceFlag = true;
					}
					byte[] end = getByteArray(payloadBuffer, bufferPtr);
					result.addNew(start, end, axis, termId);
				}
			}
		}
	}
	return result;
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
@Override
public int joinTerm(TermPositions term, NodeDataBuffer previous,
		byte[] payloadBuffer, int[] positionsBuffer,
		LookaheadOptimization optimization, boolean stopAtFirst)
		throws IOException {
	int freq = term.freq();
	int bufferPtr = 0;
	int validInstances = 0;
	int val;

	for (int i = 0; i < freq && validInstances < NodeDataBuffer.BUFFER_SIZE; i++) {
		term.nextPosition();
		bufferPtr = NodeDataBuffer.PAYLOAD_LENGTH * validInstances;
		term.getPayload(payloadBuffer, bufferPtr);
		val = LookaheadOptimization.WRITE;
		if (!optimization.equals(LookaheadOptimization.NONE)
				&& validInstances > 0) {
			val = optimization.check(payloadBuffer, validInstances - 1);
			if (val == LookaheadOptimization.IGNORE)
				continue;
		}
		for (int j = 0; j < previous.size()
				&& validInstances < NodeDataBuffer.BUFFER_SIZE; j++) {
			if (logic.joinBufWithBytes(previous, j, payloadBuffer,
					bufferPtr)) {
				if (val == LookaheadOptimization.WRITE) {
					validInstances++;
				} else if (val == LookaheadOptimization.OVERWRITE) {
					overwritePrevPayloadBuf(payloadBuffer, validInstances);
				}
				if (stopAtFirst)
					return 1;
				break;
			}
		}
	}
	return validInstances;
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
/**
 * Devuelve los postings de un término dado
 * 
 * @param term Termino a buscar para devolver sus postings
 * @return lista de postings de un termino
 */
@Override
public List<Posting> getTermPostings(String term) {
    ArrayList<Posting> postingList = new ArrayList<>();
    try {
       
        TermDocs termDocs = ireader.termDocs(new Term("content", term));
        TermPositions termPositions = ireader.termPositions(new Term("content", term));
        //si se usa seek termDocs se borra
        //termDocs.seek(new Term(term));
       
        while(termDocs.next()) {
           
            int docId = termDocs.doc();
            int freq = termDocs.freq();
            ArrayList<Long> positions = new ArrayList<>();
            while (termPositions.next()) {
                positions.add((long)termPositions.nextPosition());
            }
            Posting p = new Posting(docId + "", freq, positions);
            postingList.add(p);
        }
        return postingList;
    } catch (IOException ex) {
        Logger.getLogger(LuceneIndexing.class.getName()).log(Level.SEVERE, null, ex);
    }
    return postingList;
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
/**
 * Constructor - should use an arg object ...
 * 
 * @param weight
 * @param root
 * @param level0
 * @param containerScorer
 * @param sfps
 * @param followParentInLevel0
 * @param selfIds
 * @param reader
 * @param similarity
 * @param norms
 * @param dictionaryService
 * @param repeat
 */
public LeafScorer(Weight weight, TermPositions root, TermPositions level0, ContainerScorer containerScorer, StructuredFieldPosition[] sfps, boolean followParentInLevel0,
        HashMap<String, Counter> selfIds, IndexReader reader, Similarity similarity, byte[] norms, DictionaryService dictionaryService, boolean repeat)
{
    super(similarity);
    this.root = root;
    this.containerScorer = containerScorer;
    this.sfps = sfps;
    //A this.allNodes = allNodes;
    // this.tp = tp;
    if (selfIds == null)
    {
        this.selfIds = new HashMap<String, Counter>();
        hasSelfScorer = false;
    }
    else
    {
        this.selfIds = selfIds;
        hasSelfScorer = true;
    }
    this.reader = reader;
    this.level0 = level0;
    this.dictionaryService = dictionaryService;
    this.repeat = repeat;
    this.followParentInLevel0 = followParentInLevel0;
    
    matchAllLeaves = allNodes();
    try
    {
        initialise();
    }
    catch (IOException e)
    {
        throw new LeafScorerException("IO Error:", e);
    }

}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
@Override
public void termPositions(final FunctionUtils.ConsumerEx<TermPositions, IOException> termPositionsConsumer)
		throws IOException {
	try (final TermPositions termPositions = indexReader.termPositions()) {
		termPositionsConsumer.accept(termPositions);
	}
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
@Override
final public void termPositions(FunctionUtils.ConsumerEx<TermPositions, IOException> termPositionsConsumer)
		throws IOException, SearchLibException {
	checkOnline(true);
	final ReaderLocal reader = acquire();
	try {
		reader.termPositions(termPositionsConsumer);
	} finally {
		release(reader);
	}
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
/**
 * @param id String
 * @param in TermPositions
 */
public FilterTermPositions(String id, TermPositions in)
{
    super(id, in);
    tp = in;
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
@Override
public TermPositions termPositions() throws IOException
{
    return new FilterTermPositions(id, super.termPositions());
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
public static SolrPathScorer createPathScorer(Similarity similarity, SolrPathQuery solrPathQuery, SolrIndexReader reader, Weight weight, DictionaryService dictionarySertvice, boolean repeat) throws IOException
{
    
    StructuredFieldPosition last = null;
    if(solrPathQuery.getPathStructuredFieldPositions().size() > 0)
    {
       last = solrPathQuery.getPathStructuredFieldPositions().get(solrPathQuery.getPathStructuredFieldPositions().size() - 1);
    }
   
    
    if (solrPathQuery.getPathStructuredFieldPositions().size() == 0) 
    {
            ArrayList<StructuredFieldPosition> answer = new ArrayList<StructuredFieldPosition>(2);
            answer.add(new SelfAxisStructuredFieldPosition());
            answer.add(new SelfAxisStructuredFieldPosition());
            
            solrPathQuery.appendQuery(answer);
    }

    
    for (StructuredFieldPosition sfp : solrPathQuery.getPathStructuredFieldPositions())
    {
        if (sfp.getTermText() != null)
        {
            TermPositions p = reader.termPositions(new Term(solrPathQuery.getPathField(), sfp.getTermText()));
            if (p == null)
                return null;
            CachingTermPositions ctp = new CachingTermPositions(p);
            sfp.setCachingTermPositions(ctp);
        }
    }

    SolrContainerScorer cs = null;

    TermPositions rootContainerPositions = null;
    if (solrPathQuery.getPathRootTerm() != null)
    {
        rootContainerPositions = reader.termPositions(solrPathQuery.getPathRootTerm());
    }
   
    if (solrPathQuery.getPathStructuredFieldPositions().size() > 0)
    {
        cs = new SolrContainerScorer(weight, rootContainerPositions, (StructuredFieldPosition[]) solrPathQuery.getPathStructuredFieldPositions().toArray(new StructuredFieldPosition[] {}),
                similarity, reader.norms(solrPathQuery.getPathField()));
    }
   
   
    return new SolrPathScorer(similarity, cs);
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
public TermPositions termPositions() throws IOException
{
    // TODO Auto-generated method stub
    throw new UnsupportedOperationException();
}
 

import org.apache.lucene.index.TermPositions; //导入依赖的package包/类
public CachingTermPositions(TermPositions delegate)
{
    this.delegate = delegate;
}