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annotate src/goodjava/lucene/queryparser/NumberFieldParser.java @ 1831:8f9ae295bf6a

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author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 26 Sep 2024 15:07:45 -0600
parents c62324841dfb
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6b6c11c9164e goodjava.lucene
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1 package goodjava.lucene.queryparser;
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2
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3 import org.apache.lucene.search.Query;
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4 import org.apache.lucene.search.NumericRangeQuery;
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5 import org.apache.lucene.search.SortField;
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6 import org.apache.lucene.search.PrefixQuery;
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7 import org.apache.lucene.search.TermQuery;
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8 import org.apache.lucene.index.Term;
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9 import org.apache.lucene.util.BytesRef;
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10 import goodjava.parser.ParseException;
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11 import org.apache.lucene.util.NumericUtils;
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14 public abstract class NumberFieldParser implements FieldParser {
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15
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16 @Override public final Query getQuery(GoodQueryParser qp,String field,String query) throws ParseException {
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17 if( query.equals("*") )
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18 return new PrefixQuery(new Term(field,""));
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19 try {
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20 return getQuery(field,query);
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21 } catch(NumberFormatException e) {
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22 throw qp.exception(e);
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23 }
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24 }
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25
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26 protected Query getQuery(String field,String query) {
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27 return getRangeQuery(field,query,query,true,true);
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28 }
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29
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30 @Override public final Query getRangeQuery(GoodQueryParser qp,String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) throws ParseException {
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31 try {
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32 return getRangeQuery(field,minQuery,maxQuery,includeMin,includeMax);
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33 } catch(NumberFormatException e) {
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34 throw qp.exception(e);
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35 }
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36 }
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38 abstract protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax);
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39
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40 @Override public SortField getSortField(GoodQueryParser qp,String field,boolean reverse) {
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41 return new SortField( field, sortType(), reverse );
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42 }
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43
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44 abstract protected SortField.Type sortType();
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47 public static final FieldParser INT = new NumberFieldParser() {
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48
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49 @Override protected Query getQuery(String field,String query) {
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50 int n = Integer.valueOf(query);
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51 return new TermQuery( term(field,n) );
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52 }
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53
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54 @Override protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) {
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55 Integer min = minQuery.equals("*") ? null : Integer.valueOf(minQuery);
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56 Integer max = maxQuery.equals("*") ? null : Integer.valueOf(maxQuery);
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57 return NumericRangeQuery.newIntRange(field,min,max,includeMin,includeMax);
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58 }
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59
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60 @Override protected SortField.Type sortType() {
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61 return SortField.Type.INT;
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62 }
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63 };
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65 public static final FieldParser LONG = new NumberFieldParser() {
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66
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67 @Override protected Query getQuery(String field,String query) {
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68 long n = Long.valueOf(query);
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69 return new TermQuery( term(field,n) );
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70 }
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71
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72 @Override protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) {
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73 Long min = minQuery.equals("*") ? null : Long.valueOf(minQuery);
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74 Long max = maxQuery.equals("*") ? null : Long.valueOf(maxQuery);
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75 return NumericRangeQuery.newLongRange(field,min,max,includeMin,includeMax);
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76 }
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77
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78 @Override protected SortField.Type sortType() {
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79 return SortField.Type.LONG;
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80 }
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81 };
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82
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83 public static final FieldParser FLOAT = new NumberFieldParser() {
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84
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85 @Override protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) {
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86 Float min = minQuery.equals("*") ? null : Float.valueOf(minQuery);
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87 Float max = maxQuery.equals("*") ? null : Float.valueOf(maxQuery);
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88 return NumericRangeQuery.newFloatRange(field,min,max,includeMin,includeMax);
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89 }
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90
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91 @Override protected SortField.Type sortType() {
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92 return SortField.Type.FLOAT;
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93 }
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94 };
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96 public static final FieldParser DOUBLE = new NumberFieldParser() {
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97
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98 @Override protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) {
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99 Double min = minQuery.equals("*") ? null : Double.valueOf(minQuery);
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100 Double max = maxQuery.equals("*") ? null : Double.valueOf(maxQuery);
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101 return NumericRangeQuery.newDoubleRange(field,min,max,includeMin,includeMax);
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102 }
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103
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104 @Override protected SortField.Type sortType() {
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105 return SortField.Type.DOUBLE;
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106 }
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107 };
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108
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109 public static Term term(String name,int value) {
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110 BytesRef br = new BytesRef();
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111 NumericUtils.intToPrefixCoded(value,0,br);
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112 return new Term(name,br);
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113 }
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114
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115 public static Term term(String name,long value) {
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116 BytesRef br = new BytesRef();
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117 NumericUtils.longToPrefixCoded(value,0,br);
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118 return new Term(name,br);
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119 }
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120
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121 }