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annotate lucene/src/luan/modules/lucene/Lucene.luan @ 233:ef39bc4d3f70

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basic lucene works git-svn-id: https://luan-java.googlecode.com/svn/trunk@234 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 02 Oct 2014 02:58:55 +0000
parents 9ce18106f95a
children c5c60eca33dd
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1 import "Java"
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2 import "luan.modules.lucene.LuceneIndex"
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5 function Index(indexDir)
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6 local index = LuceneIndex.new(indexDir).table()
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8 function index.save_document(doc)
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9 index.Writer( function(writer)
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10 writer.save_document(doc)
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11 end )
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12 end
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14 function index.delete_documents(terms)
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15 index.Writer( function(writer)
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16 writer.delete_documents(terms)
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17 end )
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18 end
4438cb2e04d0 start lucene
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20 function index.get_document(query)
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21 return index.Searcher( function(searcher)
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22 local results, _, total_hits = searcher.search(query,1)
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23 if total_hits == 0 then
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24 return nil
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25 elseif total_hits > 1 then
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26 error( "found " .. total_hits .. " documents" )
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27 end
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28 return results()
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29 end )
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30 end
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32 return index
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33 end