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API Documentation
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 CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE is used. Otherwise, CONSTANT_SCORE_FILTER_REWRITE is used. More...
#include <MultiTermQuery.h>
Public Member Functions | |
ConstantScoreAutoRewrite () | |
virtual | ~ConstantScoreAutoRewrite () |
virtual String | getClassName () |
boost::shared_ptr < ConstantScoreAutoRewrite > | shared_from_this () |
virtual void | setTermCountCutoff (int32_t count) |
If the number of terms in this query is equal to or larger than this setting then CONSTANT_SCORE_FILTER_REWRITE is used. More... | |
virtual int32_t | getTermCountCutoff () |
virtual 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 CONSTANT_SCORE_FILTER_REWRITE is used. More... | |
virtual double | getDocCountPercent () |
virtual QueryPtr | rewrite (IndexReaderPtr reader, MultiTermQueryPtr query) |
virtual int32_t | hashCode () |
Return hash code for this object. More... | |
virtual bool | equals (LuceneObjectPtr other) |
Return whether two objects are equal. More... | |
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virtual | ~RewriteMethod () |
boost::shared_ptr< RewriteMethod > | shared_from_this () |
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virtual | ~LuceneObject () |
virtual void | initialize () |
Called directly after instantiation to create objects that depend on this object being fully constructed. More... | |
virtual LuceneObjectPtr | clone (LuceneObjectPtr other=LuceneObjectPtr()) |
Return clone of this object. More... | |
virtual int32_t | compareTo (LuceneObjectPtr other) |
Compare two objects. More... | |
virtual String | toString () |
Returns a string representation of the object. More... | |
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virtual | ~LuceneSync () |
virtual SynchronizePtr | getSync () |
Return this object synchronize lock. More... | |
virtual LuceneSignalPtr | getSignal () |
Return this object signal. More... | |
virtual void | lock (int32_t timeout=0) |
Lock this object using an optional timeout. More... | |
virtual void | unlock () |
Unlock this object. More... | |
virtual bool | holdsLock () |
Returns true if this object is currently locked by current thread. More... | |
virtual void | wait (int32_t timeout=0) |
Wait for signal using an optional timeout. More... | |
virtual void | notifyAll () |
Notify all threads waiting for signal. More... | |
Static Public Member Functions | |
static String | _getClassName () |
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static String | _getClassName () |
Static Public Attributes | |
static const int32_t | DEFAULT_TERM_COUNT_CUTOFF |
static const double | DEFAULT_DOC_COUNT_PERCENT |
Protected Attributes | |
int32_t | termCountCutoff |
double | docCountPercent |
Additional Inherited Members | |
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LuceneObject () | |
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 CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE is used. Otherwise, CONSTANT_SCORE_FILTER_REWRITE is used.
Lucene::ConstantScoreAutoRewrite::ConstantScoreAutoRewrite | ( | ) |
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inlinestatic |
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Return whether two objects are equal.
Reimplemented from Lucene::LuceneObject.
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Reimplemented from Lucene::RewriteMethod.
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Return hash code for this object.
Reimplemented from Lucene::LuceneObject.
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Implements Lucene::RewriteMethod.
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If the number of documents to be visited in the postings exceeds this specified percentage of the maxDoc() for the index, then CONSTANT_SCORE_FILTER_REWRITE is used.
percent | 0.0 to 100.0 |
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If the number of terms in this query is equal to or larger than this setting then CONSTANT_SCORE_FILTER_REWRITE is used.
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