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java.lang.Object org.apache.lucene.search.MultiTermQuery.RewriteMethod org.apache.lucene.search.TopTermsRewrite<Q>
public abstract class TopTermsRewrite<Q extends Query>
Base rewrite method for collecting only the top terms via a priority queue.
Nested Class Summary | |
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protected static interface |
TermCollectingRewrite.TermCollector
|
Constructor Summary | |
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TopTermsRewrite(int size)
Create a TopTermsBooleanQueryRewrite for at most size terms. |
Method Summary | |
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protected abstract void |
addClause(Q topLevel,
Term term,
float boost)
Add a MultiTermQuery term to the top-level query |
protected void |
collectTerms(IndexReader reader,
MultiTermQuery query,
TermCollectingRewrite.TermCollector collector)
|
boolean |
equals(Object obj)
|
protected abstract int |
getMaxSize()
return the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount). |
int |
getSize()
return the maximum priority queue size |
protected abstract Q |
getTopLevelQuery()
Return a suitable top-level Query for holding all expanded terms. |
int |
hashCode()
|
Q |
rewrite(IndexReader reader,
MultiTermQuery query)
|
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public TopTermsRewrite(int size)
size
terms.
NOTE: if BooleanQuery.getMaxClauseCount()
is smaller than
size
, then it will be used instead.
Method Detail |
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public int getSize()
protected abstract int getMaxSize()
public Q rewrite(IndexReader reader, MultiTermQuery query) throws IOException
rewrite
in class MultiTermQuery.RewriteMethod
IOException
public int hashCode()
hashCode
in class Object
public boolean equals(Object obj)
equals
in class Object
protected abstract Q getTopLevelQuery() throws IOException
IOException
protected abstract void addClause(Q topLevel, Term term, float boost) throws IOException
IOException
protected final void collectTerms(IndexReader reader, MultiTermQuery query, TermCollectingRewrite.TermCollector collector) throws IOException
IOException
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