public final class SynExpand
extends java.lang.Object
Syns2Index
first to build the synonym index.Syns2Index
Constructor and Description |
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SynExpand() |
Modifier and Type | Method and Description |
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static org.apache.lucene.search.Query |
expand(java.lang.String query,
org.apache.lucene.search.Searcher syns,
org.apache.lucene.analysis.Analyzer a,
java.lang.String field,
float boost)
Perform synonym expansion on a query.
|
static void |
main(java.lang.String[] args)
Test driver for synonym expansion.
|
public static void main(java.lang.String[] args) throws java.io.IOException
Query: big adult^0.9 bad^0.9 bighearted^0.9 boastful^0.9 boastfully^0.9 bounteous^0.9 bountiful^0.9 braggy^0.9 crowing^0.9 freehanded^0.9 giving^0.9 grown^0.9 grownup^0.9 handsome^0.9 large^0.9 liberal^0.9 magnanimous^0.9 momentous^0.9 openhanded^0.9 prominent^0.9 swelled^0.9 vainglorious^0.9 vauntingly^0.9
dog andiron^0.9 blackguard^0.9 bounder^0.9 cad^0.9 chase^0.9 click^0.9 detent^0.9 dogtooth^0.9 firedog^0.9 frank^0.9 frankfurter^0.9 frump^0.9 heel^0.9 hotdog^0.9 hound^0.9 pawl^0.9 tag^0.9 tail^0.9 track^0.9 trail^0.9 weenie^0.9 wiener^0.9 wienerwurst^0.9
java.io.IOException
public static org.apache.lucene.search.Query expand(java.lang.String query, org.apache.lucene.search.Searcher syns, org.apache.lucene.analysis.Analyzer a, java.lang.String field, float boost) throws java.io.IOException
query
- users query that is assumed to not have any "special" query syntax, thus it should be just normal words, so "big dog" makes sense, but a query like "title:foo^1.2" doesn't as this should presumably be passed directly to the default query parser.syns
- a opened to the Lucene index you previously created with Syns2Index
. The searcher is not closed or otherwise altered.a
- optional analyzer used to parse the users query else StandardAnalyzer
is usedfield
- optional field name to search in or null if you want the default of "contents"boost
- optional boost applied to synonyms else no boost is appliedjava.io.IOException
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