org.apache.lucene.search.MultiTermQuery.ConstantScoreAutoRewrite

public static class MultiTermQuery.ConstantScoreAutoRewrite extends MultiTermQuery.RewriteMethod

A rewrite method that tries to pick the best constant-score rewrite method based on term and document counts from the query. If both the number of terms and documents is small enough, then MultiTermQuery.CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE is used. Otherwise, MultiTermQuery.CONSTANT_SCORE_FILTER_REWRITE is used.

Field Details
- DEFAULT_TERM_COUNT_CUTOFF
  
  public static int DEFAULT_TERM_COUNT_CUTOFF
- DEFAULT_DOC_COUNT_PERCENT
  
  public static double DEFAULT_DOC_COUNT_PERCENT
Constructor Details
- ConstantScoreAutoRewrite
  
  public ConstantScoreAutoRewrite()
Method Details
- setTermCountCutoff
  
  public void setTermCountCutoff(int count)
  
  If the number of terms in this query is equal to or larger than this setting then MultiTermQuery.CONSTANT_SCORE_FILTER_REWRITE is used.
- getTermCountCutoff
  
  public int getTermCountCutoff()
  See Also:
  
  setTermCountCutoff(int)
- setDocCountPercent
  
  public void setDocCountPercent(double percent)
  
  If the number of documents to be visited in the postings exceeds this specified percentage of the maxDoc() for the index, then MultiTermQuery.CONSTANT_SCORE_FILTER_REWRITE is used.
  
  Parameters:
  
  percent - 0.0 to 100.0
- getDocCountPercent
  
  public double getDocCountPercent()
  See Also:
  
  setDocCountPercent(double)
- rewrite
  
  public Query rewrite(IndexReader reader, MultiTermQuery query) throws IOException
  
  Specified by:
  
  rewrite in class MultiTermQuery.RewriteMethod
  
  Throws:
  
  IOException
- hashCode
  
  public int hashCode()
  
  Overrides:
  
  hashCode in class Object
- equals
  
  public boolean equals(Object obj)
  
  Overrides:
  
  equals in class Object

Class MultiTermQuery.ConstantScoreAutoRewrite

Field Summary