org.apache.lucene.search.Query.rewrite()方法的使用及代码示例

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.rewrite方法的一些代码示例，展示了Query.rewrite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.rewrite方法的具体详情如下：
包路径：org.apache.lucene.search.Query
类名称：Query
方法名：rewrite

Query.rewrite介绍

[英]Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.
[中]专家：调用以将查询重新写入原始查询。例如，PrefixQuery将被重写为包含TermQuerys的布尔查询。

代码示例

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 Query rewrite(IndexReader reader) throws IOException {
  3.  Query indexRewrite = indexQuery.rewrite(reader);
  4.  Query dvRewrite = dvQuery.rewrite(reader);
  5.  if (indexQuery != indexRewrite || dvQuery != dvRewrite) {
  6.   return new IndexOrDocValuesQuery(indexRewrite, dvRewrite);
  7.  }
  8.  return this;
  9. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.  if (lowerValue == null && upperValue == null) {
  4.   return new DocValuesFieldExistsQuery(field);
  5.  }
  6.  return super.rewrite(reader);
  7. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.  if (lowerValue == Long.MIN_VALUE && upperValue == Long.MAX_VALUE) {
  4.   return new DocValuesFieldExistsQuery(field);
  5.  }
  6.  return super.rewrite(reader);
  7. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.  Query rewritten = query.rewrite(reader);
  4.  if (rewritten != query) {
  5.   return new ConstantScoreQuery(rewritten);
  6.  }
  7.  if (rewritten.getClass() == ConstantScoreQuery.class) {
  8.   return rewritten;
  9.  }
  10.  if (rewritten.getClass() == BoostQuery.class) {
  11.   return new ConstantScoreQuery(((BoostQuery) rewritten).getQuery());
  12.  }
  13.  return super.rewrite(reader);
  14. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.  FeatureFunction rewritten = function.rewrite(reader);
  4.  if (function != rewritten) {
  5.   return new FeatureQuery(fieldName, featureName, rewritten);
  6.  }
  7.  return super.rewrite(reader);
  8. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.  if (terms.length == 0) {
  4.   return new MatchNoDocsQuery("empty PhraseQuery");
  5.  } else if (terms.length == 1) {
  6.   return new TermQuery(terms[0]);
  7.  } else if (positions[0] != 0) {
  8.   int[] newPositions = new int[positions.length];
  9.   for (int i = 0; i < positions.length; ++i) {
  10.    newPositions[i] = positions[i] - positions[0];
  11.   }
  12.   return new PhraseQuery(slop, terms, newPositions);
  13.  } else {
  14.   return super.rewrite(reader);
  15.  }
  16. }

代码示例来源：origin: oracle/opengrok

  1. rewrittenQuery = query.rewrite(getIndexReader());

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.  final Query rewritten = query.rewrite(reader);
  4.  if (boost == 1f) {
  5.   return rewritten;
  6.  }
  7.  if (rewritten.getClass() == BoostQuery.class) {
  8.   BoostQuery in = (BoostQuery) rewritten;
  9.   return new BoostQuery(in.query, boost * in.boost);
  10.  }
  11.  if (boost == 0f && rewritten.getClass() != ConstantScoreQuery.class) {
  12.   // so that we pass needScores=false
  13.   return new BoostQuery(new ConstantScoreQuery(rewritten), 0f);
  14.  }
  15.  if (query != rewritten) {
  16.   return new BoostQuery(rewritten, boost);
  17.  }
  18.  return super.rewrite(reader);
  19. }

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

  1. /** Optimize our representation and our subqueries representations
  2.  * @param reader the IndexReader we query
  3.  * @return an optimized copy of us (which may not be a copy if there is nothing to optimize) */
  4. @Override
  5. public Query rewrite(IndexReader reader) throws IOException {
  6.  if (disjuncts.length == 1) {
  7.   return disjuncts[0];
  8.  }
  9.  if (tieBreakerMultiplier == 1.0f) {
  10.   BooleanQuery.Builder builder = new BooleanQuery.Builder();
  11.   for (Query sub : disjuncts) {
  12.    builder.add(sub, BooleanClause.Occur.SHOULD);
  13.   }
  14.   return builder.build();
  15.  }
  16.  boolean actuallyRewritten = false;
  17.  List<Query> rewrittenDisjuncts = new ArrayList<>();
  18.  for (Query sub : disjuncts) {
  19.   Query rewrittenSub = sub.rewrite(reader);
  20.   actuallyRewritten |= rewrittenSub != sub;
  21.   rewrittenDisjuncts.add(rewrittenSub);
  22.  }
  23.  if (actuallyRewritten) {
  24.   return new DisjunctionMaxQuery(rewrittenDisjuncts, tieBreakerMultiplier);
  25.  }
  26.  return super.rewrite(reader);
  27. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.  if (termArrays.length == 0) {
  4.   return new MatchNoDocsQuery("empty MultiPhraseQuery");
  5.  } else if (termArrays.length == 1) {                 // optimize one-term case
  6.   Term[] terms = termArrays[0];
  7.   BooleanQuery.Builder builder = new BooleanQuery.Builder();
  8.   for (Term term : terms) {
  9.    builder.add(new TermQuery(term), BooleanClause.Occur.SHOULD);
  10.   }
  11.   return builder.build();
  12.  } else {
  13.   return super.rewrite(reader);
  14.  }
  15. }

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/lucene-core

  1. for (BooleanClause clause : this) {
  2.   Query query = clause.getQuery();
  3.   Query rewritten = query.rewrite(reader);
  4.   if (rewritten != query) {
  5.    actuallyRewritten = true;
  6. return super.rewrite(reader);

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

  1. @Override
  2. protected ScoreFunction rewrite(IndexReader reader) throws IOException {
  3.   Query newFilter = filter.rewrite(reader);
  4.   if (newFilter == filter) {
  5.     return this;
  6.   }
  7.   return new FilterScoreFunction(newFilter, function);
  8. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.   Query rewritten = super.rewrite(reader);
  4.   if (rewritten != this) {
  5.     return rewritten;
  6.   }
  7.   Query newQ = subQuery.rewrite(reader);
  8.   ScoreFunction[] newFunctions = new ScoreFunction[functions.length];
  9.   boolean needsRewrite = (newQ != subQuery);
  10.   for (int i = 0; i < functions.length; i++) {
  11.     newFunctions[i] = functions[i].rewrite(reader);
  12.     needsRewrite |= (newFunctions[i] != functions[i]);
  13.   }
  14.   if (needsRewrite) {
  15.     return new FunctionScoreQuery(newQ, scoreMode, newFunctions, combineFunction, minScore, maxBoost);
  16.   }
  17.   return this;
  18. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.   Query innerRewrite = query.rewrite(reader);
  4.   if (innerRewrite != query) {
  5.     // Right now ToParentBlockJoinQuery always rewrites to a ToParentBlockJoinQuery
  6.     // so the else block will never be used. It is useful in the case that
  7.     // ToParentBlockJoinQuery one day starts to rewrite to a different query, eg.
  8.     // a MatchNoDocsQuery if it realizes that it cannot match any docs and rewrites
  9.     // to a MatchNoDocsQuery. In that case it would be fine to lose information
  10.     // about the nested path.
  11.     if (innerRewrite instanceof ToParentBlockJoinQuery) {
  12.       return new ESToParentBlockJoinQuery((ToParentBlockJoinQuery) innerRewrite, path);
  13.     } else {
  14.       return innerRewrite;
  15.     }
  16.   }
  17.   return super.rewrite(reader);
  18. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.   Query rewritten = super.rewrite(reader);
  4.   if (rewritten != this) {
  5.     return rewritten;
  6.   }
  7.   boolean hasPayloads = false;
  8.   for (LeafReaderContext context : reader.leaves()) {
  9.     final Terms terms = context.reader().terms(term.field());
  10.     if (terms != null) {
  11.       if (terms.hasPayloads()) {
  12.         hasPayloads = true;
  13.         break;
  14.       }
  15.     }
  16.   }
  17.   // if the terms does not exist we could return a MatchNoDocsQuery but this would break the unified highlighter
  18.   // which rewrites query with an empty reader.
  19.   if (hasPayloads == false) {
  20.     return new TermQuery(term);
  21.   }
  22.   return this;
  23. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.   Query rewritten = super.rewrite(reader);
  4.   if (rewritten != this) {
  5.     return rewritten;
  6.   }
  7.   IndexReaderContext context = reader.getContext();
  8.   TermContext[] ctx = new TermContext[terms.length];
  9.   int[] docFreqs = new int[ctx.length];
  10.   for (int i = 0; i < terms.length; i++) {
  11.     ctx[i] = TermContext.build(context, terms[i]);
  12.     docFreqs[i] = ctx[i].docFreq();
  13.   }
  14.   final int maxDoc = reader.maxDoc();
  15.   blend(ctx, maxDoc, reader);
  16.   return topLevelQuery(terms, ctx, docFreqs, maxDoc);
  17. }

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.   Query rewritten = super.rewrite(reader);
  4.   if (rewritten != this) {
  5.     return rewritten;

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

  1. @Override
  2. public Query rewrite(IndexReader reader) throws IOException {
  3.   Query rewritten = super.rewrite(reader);
  4.   if (rewritten != this) {
  5.     return rewritten;
  6.   }
  7.   XMoreLikeThis mlt = new XMoreLikeThis(reader, similarity == null ? new ClassicSimilarity() : similarity);
  8.   mlt.setFieldNames(moreLikeFields);
  9.   mlt.setAnalyzer(analyzer);
  10.   mlt.setMinTermFreq(minTermFrequency);
  11.   mlt.setMinDocFreq(minDocFreq);
  12.   mlt.setMaxDocFreq(maxDocFreq);
  13.   mlt.setMaxQueryTerms(maxQueryTerms);
  14.   mlt.setMinWordLen(minWordLen);
  15.   mlt.setMaxWordLen(maxWordLen);
  16.   mlt.setStopWords(stopWords);
  17.   mlt.setBoost(boostTerms);
  18.   mlt.setBoostFactor(boostTermsFactor);
  19.   if (this.unlikeText != null || this.unlikeFields != null) {
  20.     handleUnlike(mlt, this.unlikeText, this.unlikeFields);
  21.   }
  22.   return createQuery(mlt);
  23. }

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