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annotate lucene/src/luan/modules/lucene/LuceneDocument.java @ 544:c5a93767cc5c

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lucene overhaul, untested
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 12 Jun 2015 19:11:44 -0600
parents d9df6d6cb927
children
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1 package luan.modules.lucene;
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3 import java.util.Map;
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4 import java.util.HashMap;
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5 import java.util.Set;
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6 import java.util.HashSet;
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7 import java.util.Arrays;
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8 import org.apache.lucene.document.Document;
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9 import org.apache.lucene.index.IndexableField;
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10 import org.apache.lucene.document.Field;
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11 import org.apache.lucene.document.StoredField;
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12 import org.apache.lucene.document.StringField;
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13 import org.apache.lucene.document.IntField;
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14 import org.apache.lucene.document.LongField;
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15 import org.apache.lucene.document.DoubleField;
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16 import org.apache.lucene.util.BytesRef;
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17 import luan.Luan;
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18 import luan.LuanState;
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19 import luan.LuanTable;
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20 import luan.LuanException;
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23 public class LuceneDocument {
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24 private LuceneDocument(String a) {} // never
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25
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26 static Document toLucene(LuanState luan,LuanTable table,Set<String> indexed) throws LuanException {
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27 Document doc = new Document();
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28 for( Map.Entry<Object,Object> entry : table.iterable(luan) ) {
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29 Object key = entry.getKey();
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30 if( !(key instanceof String) )
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31 throw luan.exception("key must be string");
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32 String name = (String)key;
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33 Object value = entry.getValue();
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34 if( value instanceof String ) {
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35 String s = (String)value;
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36 if( indexed.contains(name) ) {
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37 doc.add(new StringField(name, s, Field.Store.YES));
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38 } else {
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39 doc.add(new StoredField(name, s));
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40 }
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41 } else if( value instanceof Integer ) {
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42 int i = (Integer)value;
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43 if( indexed.contains(name) ) {
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44 doc.add(new IntField(name, i, Field.Store.YES));
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45 } else {
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46 doc.add(new StoredField(name, i));
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47 }
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48 } else if( value instanceof Long ) {
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49 long i = (Long)value;
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50 if( indexed.contains(name) ) {
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51 doc.add(new LongField(name, i, Field.Store.YES));
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52 } else {
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53 doc.add(new StoredField(name, i));
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54 }
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55 } else if( value instanceof Double ) {
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56 double i = (Double)value;
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57 if( indexed.contains(name) ) {
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58 doc.add(new DoubleField(name, i, Field.Store.YES));
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59 } else {
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60 doc.add(new StoredField(name, i));
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61 }
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62 } else if( value instanceof byte[] ) {
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63 byte[] b = (byte[])value;
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64 doc.add(new StoredField(name, b));
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65 } else
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66 throw luan.exception("invalid value type "+value.getClass()+"' for '"+name+"'");
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67 }
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68 return doc;
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69 }
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70
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71 static LuanTable toTable(LuanState luan,Document doc) throws LuanException {
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72 if( doc==null )
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73 return null;
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74 LuanTable table = new LuanTable();
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75 for( IndexableField ifld : doc ) {
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76 String name = ifld.name();
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77 BytesRef br = ifld.binaryValue();
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78 if( br != null ) {
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79 table.rawPut(name,br.bytes);
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80 continue;
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81 }
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82 Number n = ifld.numericValue();
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83 if( n != null ) {
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84 table.rawPut(name,n);
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85 continue;
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86 }
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87 String s = ifld.stringValue();
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88 if( s != null ) {
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89 table.rawPut(name,s);
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90 continue;
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91 }
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92 throw luan.exception("invalid field type for "+ifld);
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93 }
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94 return table;
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95 }
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96 }