org.apache.lucene.search.Query类的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中org.apache.lucene.search.Query类的一些代码示例，展示了Query类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Query类的具体详情如下：
包路径：org.apache.lucene.search.Query
类名称：Query

Query介绍

[英]The abstract base class for queries.

Instantiable subclasses are:

  • TermQuery
  • BooleanQuery
  • WildcardQuery
  • PhraseQuery
  • PrefixQuery
  • MultiPhraseQuery
  • FuzzyQuery
  • RegexpQuery
  • TermRangeQuery
  • NumericRangeQuery
  • ConstantScoreQuery
  • DisjunctionMaxQuery
  • MatchAllDocsQuery

See also the family of org.apache.lucene.search.spansand additional queries available in the Queries module
[中]查询的抽象基类。
可实例化的子类包括：
*术语查询
*布尔查询
*通配符查询
*短语查询
*前缀查询
*多重措辞
*模糊查询
*RegexpQuery
*TermRangeQuery
*数字范围查询
*康斯坦索查询
*析取MaxQuery
*相配的
另见org家族。阿帕奇。卢森。搜索span和Queries module中提供的其他查询

代码示例

代码示例来源：origin: oracle/opengrok

  1. /**
  2.  * Gets the instance from {@code search(...)} if it was called.
  3.  * @return defined instance or {@code null}
  4.  */
  5. public String getQuery() {
  6.   return query != null ? query.toString() : null;
  7. }

代码示例来源：origin: org.apache.lucene/lucene-core

  1. /** Expert: called to re-write queries into primitive queries.
  2.  * @throws BooleanQuery.TooManyClauses If a query would exceed 
  3.  *         {@link BooleanQuery#getMaxClauseCount()} clauses.
  4.  */
  5. public Query rewrite(Query original) throws IOException {
  6.  Query query = original;
  7.  for (Query rewrittenQuery = query.rewrite(reader); rewrittenQuery != query;
  8.     rewrittenQuery = query.rewrite(reader)) {
  9.   query = rewrittenQuery;
  10.  }
  11.  return query;
  12. }

代码示例来源：origin: org.apache.lucene/lucene-core

  1. @Override
  2. public DoubleValuesSource rewrite(IndexSearcher searcher) throws IOException {
  3.  return new WeightDoubleValuesSource(searcher.rewrite(query).createWeight(searcher, true, 1f));
  4. }

代码示例来源：origin: org.infinispan/infinispan-query

  1. @Test
  2. public void testBeAbleToProjectUnqualifiedField() {
  3.  LuceneQueryParsingResult<Class<?>> result = parseAndTransform("SELECT name, text FROM org.infinispan.query.dsl.embedded.impl.model.Employee e JOIN e.contactDetails d");
  4.  assertThat(result.getQuery().toString()).isEqualTo("*:*");
  5.  assertThat(result.getProjections()).containsOnly("name", "text");
  6. }

代码示例来源：origin: org.infinispan/infinispan-query

  1. @Test
  2. public void testProjectionQuery() {
  3.  LuceneQueryParsingResult<Class<?>> parsingResult = parseAndTransform("select e.id, e.name from org.infinispan.query.dsl.embedded.impl.model.Employee e");
  4.  assertThat(parsingResult.getQuery().toString()).isEqualTo("*:*");
  5.  assertThat(parsingResult.getProjections()).isEqualTo(new String[]{"id", "name"});
  6. }

代码示例来源：origin: rnewson/couchdb-lucene

  1. queryRow.put("q", q.toString());
  2. if (getBooleanParameter(req, "debug")) {
  3.   queryRow.put("plan", QueryPlan.toPlan(q));
  4.   final Query rewritten_q = q.rewrite(searcher
  5.       .getIndexReader());
  6.   queryRow.put("rewritten_q", rewritten_q.toString());
  7.   final Weight weight = rewritten_q.createWeight(searcher, false);
  8.   weight.extractTerms(terms);
  9.   for (final Object term : terms) {
  10.     final int freq = searcher.getIndexReader().docFreq((Term) term);
  11.     freqs.put(term.toString(), freq);
  12.     td = searcher.search(q, skip + limit);
  13.   } else {
  14.     td = searcher.search(q, skip + limit, sort);

代码示例来源：origin: hibernate/hibernate-search

  1. private Set<Term> extractTerms(Query query, Class<?> indexedType) throws IOException {
  2.   IndexReader reader = null;
  3.   try {
  4.     Set<Term> terms = new HashSet<Term>( 100 );
  5.     reader = sfHolder.getSearchFactory().getIndexReaderAccessor().open( indexedType );
  6.     query.createWeight( new IndexSearcher( reader ), false ).extractTerms( terms );
  7.     return terms;
  8.   }
  9.   finally {
  10.     if ( reader != null ) {
  11.       reader.close();
  12.     }
  13.   }
  14. }

代码示例来源：origin: hibernate/hibernate-search

  1. @Override
  2. public void close() {
  3.   final IndexReader indexReader = searcher.getIndexReader();
  4.   try {
  5.     MultiReaderFactory.closeReader( indexReader );
  6.   }
  7.   catch (SearchException e) {
  8.     log.unableToCloseSearcherDuringQuery( userQuery.toString(), e );
  9.   }
  10. }

代码示例来源：origin: larsga/Duke

  1. termQuery.setBoost(boost);
  2. parent.add(termQuery, required ? Occur.MUST : Occur.SHOULD);

代码示例来源：origin: hibernate/hibernate-search

  1. private Query rewrittenQuery() throws IOException {
  2.     if ( rewrittenQuery == null ) {
  3.       //Apply faceting filters:
  4.       final Query effectiveQuery = facetingFilters.filterOrPassthrough( userQuery );
  5.       rewrittenQuery = effectiveQuery.rewrite( searcher.getIndexReader() );
  6.     }
  7.     return rewrittenQuery;
  8.   }
  9. }

代码示例来源：origin: org.apache.lucene/lucene-core

  1. @Override
  2. public Explanation explain(LeafReaderContext context, int doc) throws IOException {
  3.  final int minShouldMatch = query.getMinimumNumberShouldMatch();
  4.  List<Explanation> subs = new ArrayList<>();
  5.  float sum = 0.0f;
  6.  int matchCount = 0;
  7.  int shouldMatchCount = 0;
  8.  Iterator<BooleanClause> cIter = query.iterator();
  9.  for (Iterator<Weight> wIter = weights.iterator(); wIter.hasNext();) {
  10.   Weight w = wIter.next();
  11.   BooleanClause c = cIter.next();
  12.   Explanation e = w.explain(context, doc);
  13.   if (e.isMatch()) {
  14.    if (c.isScoring()) {
  15.       Explanation.match(0f, Occur.FILTER + " clause"), e));
  16.    } else if (c.isProhibited()) {
  17.     subs.add(Explanation.noMatch("match on prohibited clause (" + c.getQuery().toString() + ")", e));
  18.     fail = true;
  19.    subs.add(Explanation.noMatch("no match on required clause (" + c.getQuery().toString() + ")", e));
  20.    fail = true;

代码示例来源：origin: org.elasticsearch/elasticsearch

  1. final Weight nestedWeight = filter.createWeight(sc.searcher(), false, 1f);
  2. Scorer scorer = nestedWeight.scorer(context);
  3. if (scorer == null) {
  4.   continue;

代码示例来源：origin: org.apache.lucene/lucene-core

  1. public String toString(String field) {
  2.  StringBuilder buffer = new StringBuilder();
  3.  boolean needParens = getMinimumNumberShouldMatch() > 0;
  4.  if (needParens) {
  5.   buffer.append("(");
  6.   if (subQuery instanceof BooleanQuery) {  // wrap sub-bools in parens
  7.    buffer.append("(");
  8.    buffer.append(subQuery.toString(field));
  9.    buffer.append(")");
  10.   } else {
  11.    buffer.append(subQuery.toString(field));
  12.  if (getMinimumNumberShouldMatch()>0) {
  13.   buffer.append('~');
  14.   buffer.append(getMinimumNumberShouldMatch());

代码示例来源：origin: org.elasticsearch/elasticsearch

  1. @Override
  2. public Explanation explain(LeafReaderContext context, int doc) throws IOException {
  3.   Explanation expl = subQueryWeight.explain(context, doc);
  4.   if (!expl.isMatch()) {
  5.     return expl;
  6.       if (filterWeights[i] != null) {
  7.         final Bits docSet = Lucene.asSequentialAccessBits(
  8.             context.reader().maxDoc(), filterWeights[i].scorerSupplier(context));
  9.         if (docSet.get(doc) == false) {
  10.           continue;
  11.         Query filterQuery = ((FilterScoreFunction) function).filter;
  12.         Explanation filterExplanation = Explanation.match(sc, "function score, product of:",
  13.           Explanation.match(1.0f, "match filter: " + filterQuery.toString()), functionExplanation);
  14.         functionsExplanations.add(filterExplanation);
  15.       } else {

代码示例来源：origin: org.apache.lucene/lucene-core

  1. final int threshold = Math.min(BOOLEAN_REWRITE_TERM_COUNT_THRESHOLD, BooleanQuery.getMaxClauseCount());
  2. assert termData.size() > threshold : "Query should have been rewritten";
  3. List<TermAndState> matchingTerms = new ArrayList<>(threshold);
  4.  BooleanQuery.Builder bq = new BooleanQuery.Builder();
  5.  for (TermAndState t : matchingTerms) {
  6.   final TermContext termContext = new TermContext(searcher.getTopReaderContext());
  7.   termContext.register(t.state, context.ord, t.docFreq, t.totalTermFreq);
  8.   bq.add(new TermQuery(new Term(t.field, t.term), termContext), Occur.SHOULD);
  9.  final Weight weight = searcher.rewrite(q).createWeight(searcher, needsScores, score());
  10.  return new WeightOrDocIdSet(weight);
  11. } else {

代码示例来源：origin: harbby/presto-connectors

  1. private String getRewrittenQuery(IndexSearcher searcher, Query query) throws IOException {
  2.     Query queryRewrite = searcher.rewrite(query);
  3.     if (queryRewrite instanceof MatchNoDocsQuery) {
  4.       return query.toString();
  5.     } else {
  6.       return queryRewrite.toString();
  7.     }
  8.   }
  9. }

代码示例来源：origin: org.apache.lucene/com.springsource.org.apache.lucene

  1. protected Weight createWeight(Searcher searcher) throws IOException {
  2.  if (terms.size() == 1) {			  // optimize one-term case
  3.   Term term = (Term)terms.get(0);
  4.   Query termQuery = new TermQuery(term);
  5.   termQuery.setBoost(getBoost());
  6.   return termQuery.createWeight(searcher);
  7.  }
  8.  return new PhraseWeight(searcher);
  9. }

代码示例来源：origin: org.apache.lucene/lucene-core

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.  final int threshold = Math.min(BOOLEAN_REWRITE_TERM_COUNT_THRESHOLD, BooleanQuery.getMaxClauseCount());
  4.  if (termData.size() <= threshold) {
  5.   BooleanQuery.Builder bq = new BooleanQuery.Builder();
  6.   TermIterator iterator = termData.iterator();
  7.   for (BytesRef term = iterator.next(); term != null; term = iterator.next()) {
  8.    bq.add(new TermQuery(new Term(iterator.field(), BytesRef.deepCopyOf(term))), Occur.SHOULD);
  9.   }
  10.   return new ConstantScoreQuery(bq.build());
  11.  }
  12.  return super.rewrite(reader);
  13. }

代码示例来源：origin: org.apache.lucene/com.springsource.org.apache.lucene

  1. /** Expert: Constructs and initializes a Weight for a top-level query. */
  2. public Weight weight(Searcher searcher)
  3.  throws IOException {
  4.  Query query = searcher.rewrite(this);
  5.  Weight weight = query.createWeight(searcher);
  6.  float sum = weight.sumOfSquaredWeights();
  7.  float norm = getSimilarity(searcher).queryNorm(sum);
  8.  weight.normalize(norm);
  9.  return weight;
  10. }

代码示例来源：origin: org.infinispan/infinispan-embedded-query

  1. @Override
  2. public Query rewrite(IndexReader r) throws IOException {
  3.  if (getBoost() != 1f) {
  4.   return super.rewrite(r);
  5.  }
  6.  BooleanQuery rewritten = getBooleanQuery();
  7.  if (rewritten.clauses().isEmpty()) {
  8.   return new MatchAllDocsQuery();
  9.  }
  10.  return rewritten;
  11. }

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