MultiTermQuery.TopTermsScoringBooleanQueryRewrite (Lucene 3.6.2 API)

java.lang.Object
- org.apache.lucene.search.MultiTermQuery.RewriteMethod
- - org.apache.lucene.search.TopTermsRewrite<BooleanQuery>
  - - org.apache.lucene.search.MultiTermQuery.TopTermsScoringBooleanQueryRewrite

All Implemented Interfaces:

Serializable

Enclosing class:

MultiTermQuery
```
public static final class MultiTermQuery.TopTermsScoringBooleanQueryRewrite
extends TopTermsRewrite<BooleanQuery>
```
A rewrite method that first translates each term into BooleanClause.Occur.SHOULD clause in a BooleanQuery, and keeps the scores as computed by the query.
This rewrite method only uses the top scoring terms so it will not overflow the boolean max clause count. It is the default rewrite method for FuzzyQuery.

See Also:

MultiTermQuery.setRewriteMethod(org.apache.lucene.search.MultiTermQuery.RewriteMethod), Serialized Form

Constructor Summary

Constructors
Constructor Description

TopTermsScoringBooleanQueryRewrite(int size)
Create a TopTermsScoringBooleanQueryRewrite for at most size terms.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`addClause(BooleanQuery topLevel, Term term, float boost)`	Add a MultiTermQuery term to the top-level query
`protected void`	`collectTerms(IndexReader reader, MultiTermQuery query, org.apache.lucene.search.TermCollectingRewrite.TermCollector collector)`
`protected int`	`getMaxSize()`	return the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount).
`protected BooleanQuery`	`getTopLevelQuery()`	Return a suitable top-level Query for holding all expanded terms.

Methods inherited from class org.apache.lucene.search.TopTermsRewrite
equals, getSize, hashCode, rewrite

Methods inherited from class org.apache.lucene.search.MultiTermQuery.RewriteMethod
getTermsEnum

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TopTermsScoringBooleanQueryRewrite
```
public TopTermsScoringBooleanQueryRewrite(int size)
```
    Create a TopTermsScoringBooleanQueryRewrite for at most size terms.
    NOTE: if BooleanQuery.getMaxClauseCount() is smaller than size, then it will be used instead.
- Method Detail
  - getMaxSize
```
protected int getMaxSize()
```
    Description copied from class: TopTermsRewrite
    
    return the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount).
    
    Specified by:
    
    getMaxSize in class TopTermsRewrite<BooleanQuery>
  - getTopLevelQuery
```
protected BooleanQuery getTopLevelQuery()
```
    Return a suitable top-level Query for holding all expanded terms.
  - addClause
```
protected void addClause(BooleanQuery topLevel,
                         Term term,
                         float boost)
```
    Add a MultiTermQuery term to the top-level query
  - collectTerms
```
protected final void collectTerms(IndexReader reader,
                                  MultiTermQuery query,
                                  org.apache.lucene.search.TermCollectingRewrite.TermCollector collector)
                           throws IOException
```
    Throws:
    
    IOException