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annotate lucene/src/luan/modules/lucene/LuceneWriter.java @ 230:4438cb2e04d0

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start lucene git-svn-id: https://luan-java.googlecode.com/svn/trunk@231 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Tue, 30 Sep 2014 20:03:56 +0000
parents
children ef39bc4d3f70
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rev   line source
230
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 package luan.modules.lucene;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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2
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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3 import java.io.IOException;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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4 import java.util.Map;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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5 import java.util.Set;
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6 import java.util.List;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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7 import java.util.ArrayList;
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8 import org.apache.lucene.index.IndexableField;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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9 import org.apache.lucene.index.Term;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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10 import luan.Luan;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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11 import luan.LuanState;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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12 import luan.LuanTable;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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13 import luan.LuanJavaFunction;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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14 import luan.LuanException;
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16
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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17 public final class LuceneWriter {
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18 public static final String FLD_TYPE = "type index";
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19 public static final String FLD_ID = "id index";
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20
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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21 private final LuceneIndex index;
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22
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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23 LuceneWriter(LuceneIndex index) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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24 index.writeLock.lock();
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25 this.index = index;
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26 }
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27
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28 // call in finally block
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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29 void close() {
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30 index.writeLock.unlock();
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31 }
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32
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33 void commit() throws IOException {
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34 index.writer.commit();
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35 }
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36
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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37 void addDocument(LuanTable doc) throws IOException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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38 index.writer.addDocument(LuceneDocument.toLucene(doc));
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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39 }
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40
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41 void updateDocument(Term term,LuanTable doc) throws IOException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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42 index.writer.updateDocument(term,LuceneDocument.toLucene(doc));
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43 }
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44
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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45 public void delete_documents(LuanState luan,LuanTable tblTerms) throws LuanException, IOException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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46 List<Term> list = new ArrayList<Term>();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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47 for( Map.Entry<Object,Object> entry : tblTerms ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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48 Object key = entry.getKey();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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49 Object value = entry.getValue();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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50 if( !(key instanceof String) )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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51 throw luan.exception("key must be a string but got "+key.getClass().getSimpleName());
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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52 if( !(value instanceof String) )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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53 throw luan.exception("value must be a string but got "+value.getClass().getSimpleName());
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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54 list.add( new Term( (String)key, (String)value ) );
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55 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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56 index.writer.deleteDocuments(list.toArray(new Term[list.size()]));
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57 }
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58
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59 String nextId() {
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60 return index.nextId();
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61 }
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62
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63 public void save_document(LuanTable doc) throws IOException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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64 if( doc.get(FLD_TYPE)==null )
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65 throw new RuntimeException("missing '"+FLD_TYPE+"'");
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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66 String id = (String)doc.get(FLD_ID);
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67 if( id == null ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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68 id = nextId();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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69 doc.put(FLD_ID,id);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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70 addDocument(doc);
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71 } else {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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72 updateDocument(new Term(FLD_ID,id),doc);
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73 }
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74 }
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75
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76 // luan
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77
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78 private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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79 t.put( method, new LuanJavaFunction(LuceneWriter.class.getMethod(method,parameterTypes),this) );
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80 }
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81
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82 LuanTable table() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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83 LuanTable tbl = Luan.newTable();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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84 try {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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85 add( tbl, "save_document", LuanTable.class );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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86 add( tbl, "delete_documents", LuanState.class, LuanTable.class );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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87 } catch(NoSuchMethodException e) {
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88 throw new RuntimeException(e);
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89 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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90 return tbl;
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91 }
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92
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93 }