Lucene++ - a full-featured, c++ search engine
API Documentation

Data Structures | Namespaces
FieldComparator.h File Reference
`#include "LuceneObject.h"`

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## Data Structures

class | Lucene::FieldComparator
| A FieldComparator compares hits so as to determine their sort order when collecting the top results with TopFieldCollector. The concrete public FieldComparator classes here correspond to the SortField types. More...
class | Lucene::NumericComparator< TYPE >
class | Lucene::ByteComparator
| Parses field's values as byte (using FieldCache#getBytes and sorts by ascending value. More...
class | Lucene::DocComparator
| Sorts by ascending docID. More...
class | Lucene::DoubleComparator
| Parses field's values as double (using FieldCache#getDoubles and sorts by ascending value. More...
class | Lucene::IntComparator
| Parses field's values as int (using FieldCache#getInts and sorts by ascending value. More...
class | Lucene::LongComparator
| Parses field's values as long (using FieldCache#getLongs and sorts by ascending value. More...
class | Lucene::RelevanceComparator
| Sorts by descending relevance. NOTE: if you are sorting only by descending relevance and then secondarily by ascending docID, performance is faster using TopScoreDocCollector directly (which {} uses when no Sort} is specified). More...
class | Lucene::StringComparatorLocale
| Sorts by a field's value using the Collator for a given Locale. More...
class | Lucene::StringOrdValComparator

Sorts by field's natural String sort order, using ordinals. This is functionally equivalent to {}, but it first resolves the string to their relative ordinal positions (using the index returned by FieldCache#getStringIndex}), and does most comparisons using the ordinals. For medium to large results, this comparator will be much faster than StringValComparator}. For very small result sets it may be slower. More...

class | Lucene::StringValComparator
| Sorts by field's natural String sort order. All comparisons are done using String.compare, which is slow for medium to large result sets but possibly very fast for very small results sets. More...

## Namespaces

| Lucene

clucene.sourceforge.net