Mercurial Hosting > luan
annotate lucene/src/luan/modules/lucene/LuceneWriter.java @ 427:dae264ad6a7b
fix LuanTable.put() to use metatables
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Fri, 01 May 2015 19:29:07 -0600 |
parents | 23a93c118042 |
children | d9df6d6cb927 |
rev | line source |
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230
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1 package luan.modules.lucene; |
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2 |
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3 import java.io.IOException; |
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4 import java.util.Map; |
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5 import java.util.Set; |
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6 import java.util.List; |
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7 import java.util.ArrayList; |
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8 import org.apache.lucene.index.IndexableField; |
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9 import org.apache.lucene.index.Term; |
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10 import luan.Luan; |
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11 import luan.LuanState; |
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12 import luan.LuanTable; |
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13 import luan.LuanJavaFunction; |
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14 import luan.LuanException; |
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15 |
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16 |
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17 public final class LuceneWriter { |
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18 private final LuceneIndex index; |
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19 |
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20 LuceneWriter(LuceneIndex index) { |
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21 index.writeLock.lock(); |
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22 this.index = index; |
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23 } |
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24 |
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25 // call in finally block |
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26 void close() { |
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27 index.writeLock.unlock(); |
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28 } |
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29 |
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30 void commit() throws IOException { |
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31 index.writer.commit(); |
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32 } |
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33 |
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34 void addDocument(LuanState luan,LuanTable doc) throws LuanException, IOException { |
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35 index.writer.addDocument(index.toLucene(luan,doc)); |
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36 } |
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37 |
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38 void updateDocument(LuanState luan,Term term,LuanTable doc) throws LuanException, IOException { |
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39 index.writer.updateDocument(term,index.toLucene(luan,doc)); |
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40 } |
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41 |
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42 public void delete_documents(LuanState luan,LuanTable tblTerms) throws LuanException, IOException { |
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43 List<Term> list = new ArrayList<Term>(); |
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44 for( Map.Entry<Object,Object> entry : tblTerms ) { |
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45 Object key = entry.getKey(); |
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46 Object value = entry.getValue(); |
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47 if( !(key instanceof String) ) |
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48 throw luan.exception("key must be a string but got "+key.getClass().getSimpleName()); |
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49 if( !(value instanceof String) ) |
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50 throw luan.exception("value must be a string but got "+value.getClass().getSimpleName()); |
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51 list.add( index.newTerm( (String)key, (String)value ) ); |
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52 } |
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53 index.writer.deleteDocuments(list.toArray(new Term[list.size()])); |
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54 } |
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55 |
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56 String nextId(LuanState luan) throws LuanException, IOException { |
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57 return index.nextId(luan); |
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58 } |
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59 |
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60 public void save_document(LuanState luan,LuanTable doc) throws LuanException, IOException { |
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61 if( doc.get(luan,"type")==null ) |
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62 throw luan.exception("missing 'type' field"); |
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63 String id = (String)doc.get(luan,"id"); |
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64 if( id == null ) { |
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65 id = nextId(luan); |
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66 doc.put(luan,"id",id); |
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67 addDocument(luan,doc); |
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68 } else { |
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69 updateDocument(luan,index.newTerm("id",id),doc); |
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70 } |
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71 } |
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72 |
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73 // luan |
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74 |
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75 private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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76 t.rawPut( method, new LuanJavaFunction(LuceneWriter.class.getMethod(method,parameterTypes),this) ); |
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77 } |
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78 |
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79 LuanTable table() { |
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80 LuanTable tbl = new LuanTable(); |
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81 try { |
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82 add( tbl, "save_document", LuanState.class, LuanTable.class ); |
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83 add( tbl, "delete_documents", LuanState.class, LuanTable.class ); |
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84 } catch(NoSuchMethodException e) { |
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85 throw new RuntimeException(e); |
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86 } |
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87 return tbl; |
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88 } |
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89 |
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90 } |