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annotate src/goodjava/lucene/queryparser/NumberFieldParser.java @ 1579:dd881eb03d87

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author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 10 Feb 2021 22:49:47 -0700
parents b04b8fc5f4f4
children 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.index.Term;
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8 import goodjava.parser.ParseException;
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11 public abstract class NumberFieldParser implements FieldParser {
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12
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13 @Override public final Query getQuery(GoodQueryParser qp,String field,String query) throws ParseException {
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14 if( query.equals("*") )
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15 return new PrefixQuery(new Term(field,""));
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16 return getRangeQuery(qp,field,query,query,true,true);
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17 }
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18
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19 @Override public final Query getRangeQuery(GoodQueryParser qp,String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) throws ParseException {
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20 try {
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21 return getRangeQuery(field,minQuery,maxQuery,includeMin,includeMax);
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22 } catch(NumberFormatException e) {
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23 throw qp.exception(e);
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24 }
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25 }
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27 abstract protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax);
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28
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29 @Override public SortField getSortField(GoodQueryParser qp,String field,boolean reverse) {
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30 return new SortField( field, sortType(), reverse );
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31 }
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32
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33 abstract protected SortField.Type sortType();
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36 public static final FieldParser INT = new NumberFieldParser() {
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37
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38 @Override protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) {
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39 Integer min = minQuery.equals("*") ? null : Integer.valueOf(minQuery);
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40 Integer max = maxQuery.equals("*") ? null : Integer.valueOf(maxQuery);
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41 return NumericRangeQuery.newIntRange(field,min,max,includeMin,includeMax);
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42 }
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43
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44 @Override protected SortField.Type sortType() {
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45 return SortField.Type.INT;
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46 }
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47 };
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49 public static final FieldParser LONG = new NumberFieldParser() {
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50
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51 @Override protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) {
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52 Long min = minQuery.equals("*") ? null : Long.valueOf(minQuery);
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53 Long max = maxQuery.equals("*") ? null : Long.valueOf(maxQuery);
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54 return NumericRangeQuery.newLongRange(field,min,max,includeMin,includeMax);
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55 }
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56
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57 @Override protected SortField.Type sortType() {
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58 return SortField.Type.LONG;
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59 }
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60 };
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61
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62 public static final FieldParser FLOAT = new NumberFieldParser() {
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63
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64 @Override protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) {
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65 Float min = minQuery.equals("*") ? null : Float.valueOf(minQuery);
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66 Float max = maxQuery.equals("*") ? null : Float.valueOf(maxQuery);
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67 return NumericRangeQuery.newFloatRange(field,min,max,includeMin,includeMax);
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68 }
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70 @Override protected SortField.Type sortType() {
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71 return SortField.Type.FLOAT;
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72 }
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73 };
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75 public static final FieldParser DOUBLE = new NumberFieldParser() {
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77 @Override protected Query getRangeQuery(String field,String minQuery,String maxQuery,boolean includeMin,boolean includeMax) {
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78 Double min = minQuery.equals("*") ? null : Double.valueOf(minQuery);
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79 Double max = maxQuery.equals("*") ? null : Double.valueOf(maxQuery);
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80 return NumericRangeQuery.newDoubleRange(field,min,max,includeMin,includeMax);
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81 }
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82
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83 @Override protected SortField.Type sortType() {
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84 return SortField.Type.DOUBLE;
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85 }
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86 };
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88 }