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

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

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

/** Expert: called to re-write queries into primitive queries.
 * @throws BooleanQuery.TooManyClauses If a query would exceed 
 *         {@link BooleanQuery#getMaxClauseCount()} clauses.
 */
public Query rewrite(Query original) throws IOException {
 Query query = original;
 for (Query rewrittenQuery = query.rewrite(reader); rewrittenQuery != query;
    rewrittenQuery = query.rewrite(reader)) {
  query = rewrittenQuery;
 }
 return query;
}

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

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

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

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

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

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

代码示例来源：origin: rnewson/couchdb-lucene

queryRow.put("q", q.toString());
if (getBooleanParameter(req, "debug")) {
  queryRow.put("plan", QueryPlan.toPlan(q));
  final Query rewritten_q = q.rewrite(searcher
      .getIndexReader());
  queryRow.put("rewritten_q", rewritten_q.toString());
  final Weight weight = rewritten_q.createWeight(searcher, false);
  weight.extractTerms(terms);
  for (final Object term : terms) {
    final int freq = searcher.getIndexReader().docFreq((Term) term);
    freqs.put(term.toString(), freq);
    td = searcher.search(q, skip + limit);
  } else {
    td = searcher.search(q, skip + limit, sort);

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

private Set<Term> extractTerms(Query query, Class<?> indexedType) throws IOException {
  IndexReader reader = null;
  try {
    Set<Term> terms = new HashSet<Term>( 100 );
    reader = sfHolder.getSearchFactory().getIndexReaderAccessor().open( indexedType );
    query.createWeight( new IndexSearcher( reader ), false ).extractTerms( terms );
    return terms;
  }
  finally {
    if ( reader != null ) {
      reader.close();
    }
  }
}

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

@Override
public void close() {
  final IndexReader indexReader = searcher.getIndexReader();
  try {
    MultiReaderFactory.closeReader( indexReader );
  }
  catch (SearchException e) {
    log.unableToCloseSearcherDuringQuery( userQuery.toString(), e );
  }
}

代码示例来源：origin: larsga/Duke

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

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

private Query rewrittenQuery() throws IOException {
    if ( rewrittenQuery == null ) {
      //Apply faceting filters:
      final Query effectiveQuery = facetingFilters.filterOrPassthrough( userQuery );
      rewrittenQuery = effectiveQuery.rewrite( searcher.getIndexReader() );
    }
    return rewrittenQuery;
  }
}

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

@Override
public Explanation explain(LeafReaderContext context, int doc) throws IOException {
 final int minShouldMatch = query.getMinimumNumberShouldMatch();
 List<Explanation> subs = new ArrayList<>();
 float sum = 0.0f;
 int matchCount = 0;
 int shouldMatchCount = 0;
 Iterator<BooleanClause> cIter = query.iterator();
 for (Iterator<Weight> wIter = weights.iterator(); wIter.hasNext();) {
  Weight w = wIter.next();
  BooleanClause c = cIter.next();
  Explanation e = w.explain(context, doc);
  if (e.isMatch()) {
   if (c.isScoring()) {
      Explanation.match(0f, Occur.FILTER + " clause"), e));
   } else if (c.isProhibited()) {
    subs.add(Explanation.noMatch("match on prohibited clause (" + c.getQuery().toString() + ")", e));
    fail = true;
   subs.add(Explanation.noMatch("no match on required clause (" + c.getQuery().toString() + ")", e));
   fail = true;

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

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

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

public String toString(String field) {
 StringBuilder buffer = new StringBuilder();
 boolean needParens = getMinimumNumberShouldMatch() > 0;
 if (needParens) {
  buffer.append("(");
  if (subQuery instanceof BooleanQuery) {  // wrap sub-bools in parens
   buffer.append("(");
   buffer.append(subQuery.toString(field));
   buffer.append(")");
  } else {
   buffer.append(subQuery.toString(field));
 if (getMinimumNumberShouldMatch()>0) {
  buffer.append('~');
  buffer.append(getMinimumNumberShouldMatch());

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

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

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

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

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

private String getRewrittenQuery(IndexSearcher searcher, Query query) throws IOException {
    Query queryRewrite = searcher.rewrite(query);
    if (queryRewrite instanceof MatchNoDocsQuery) {
      return query.toString();
    } else {
      return queryRewrite.toString();
    }
  }
}

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

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

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

@Override
public Query rewrite(IndexReader reader) throws IOException {
 final int threshold = Math.min(BOOLEAN_REWRITE_TERM_COUNT_THRESHOLD, BooleanQuery.getMaxClauseCount());
 if (termData.size() <= threshold) {
  BooleanQuery.Builder bq = new BooleanQuery.Builder();
  TermIterator iterator = termData.iterator();
  for (BytesRef term = iterator.next(); term != null; term = iterator.next()) {
   bq.add(new TermQuery(new Term(iterator.field(), BytesRef.deepCopyOf(term))), Occur.SHOULD);
  }
  return new ConstantScoreQuery(bq.build());
 }
 return super.rewrite(reader);
}

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

/** Expert: Constructs and initializes a Weight for a top-level query. */
public Weight weight(Searcher searcher)
 throws IOException {
 Query query = searcher.rewrite(this);
 Weight weight = query.createWeight(searcher);
 float sum = weight.sumOfSquaredWeights();
 float norm = getSimilarity(searcher).queryNorm(sum);
 weight.normalize(norm);
 return weight;
}

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

@Override
public Query rewrite(IndexReader r) throws IOException {
 if (getBoost() != 1f) {
  return super.rewrite(r);
 }
 BooleanQuery rewritten = getBooleanQuery();
 if (rewritten.clauses().isEmpty()) {
  return new MatchAllDocsQuery();
 }
 return rewritten;
}

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