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| package photospace.search; |
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| |
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| import java.io.*; |
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| import org.apache.lucene.analysis.*; |
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| import org.apache.lucene.analysis.Token; |
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| import org.apache.lucene.analysis.standard.*; |
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| import com.carbonfive.gis.*; |
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| |
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| public final class MetaAnalyzer extends StandardAnalyzer |
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| { |
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| private double latitude; |
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| private double longitude; |
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| private double radius; |
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| private boolean hasPoint; |
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| |
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16 |
57
| public TokenStream tokenStream(String fieldName, Reader reader)
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| { |
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0
| if ("labels".equals(fieldName)) return new WhitespaceTokenizer(reader);
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19 |
57
| if ("point".equals(fieldName))
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20 |
| { |
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21 |
3
| TokenStream result = new PositionTokenizer(reader);
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22 |
3
| Token token;
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23 |
3
| try
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| { |
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3
| token = result.next();
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26 |
3
| if (token != null) latitude = Double.parseDouble(token.termText());
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27 |
3
| token = result.next();
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28 |
3
| if (token != null) longitude = Double.parseDouble(token.termText());
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29 |
3
| hasPoint = true;
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| } |
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| catch (IOException e) |
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| { |
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0
| throw new RuntimeException("Exception parsing query tokens", e);
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| } |
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| |
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3
| return new StandardTokenizer(new StringReader(""));
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| } |
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38 |
54
| if ("radius".equals(fieldName))
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39 |
| { |
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2
| TokenStream result = new NumberTokenizer(reader);
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41 |
2
| Token token;
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42 |
2
| try
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| { |
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2
| token = result.next();
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45 |
2
| if (token != null) radius = Double.parseDouble(token.termText());
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| } |
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| catch (IOException e) |
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| { |
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0
| throw new RuntimeException("Exception parsing query tokens", e);
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| } |
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51 |
| |
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2
| return new StandardTokenizer(new StringReader(""));
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53 |
| } |
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54 |
52
| if ("zip".equals(fieldName))
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55 |
| { |
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56 |
1
| TokenStream result = new NumberTokenizer(reader);
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57 |
1
| Token token;
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58 |
1
| try
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59 |
| { |
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60 |
1
| token = result.next();
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61 |
1
| if (token != null)
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62 |
| { |
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63 |
1
| SpatialLocation location = ZipCodeManager.getLocation(token.termText());
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64 |
1
| if (location != null)
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| { |
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1
| latitude = location.getLatitudeAsDegrees();
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67 |
1
| longitude = location.getLongitudeAsDegrees();
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1
| hasPoint = true;
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1
| if (radius == 0) radius = 2;
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| } |
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| } |
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| } |
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| catch (IOException e) |
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| { |
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0
| throw new RuntimeException("Exception parsing query tokens", e);
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76 |
| } |
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| |
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1
| return new StandardTokenizer(new StringReader(""));
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79 |
| } |
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80 |
47
| if (DocumentFactory.TEXT_FIELD.equals(fieldName)) return super.tokenStream(fieldName, reader);
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81 |
| |
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82 |
4
| return new KeywordTokenizer(reader);
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83 |
| } |
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84 |
| |
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85 |
4
| public double getLatitude()
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|
86 |
| { |
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87 |
4
| return latitude;
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| } |
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| |
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4
| public double getLongitude()
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| { |
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4
| return longitude;
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| } |
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| |
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95 |
3
| public double getRadius()
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| { |
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3
| return radius;
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| } |
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| |
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100 |
9
| public boolean hasPoint()
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| { |
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102 |
9
| return hasPoint;
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103 |
| } |
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104 |
| |
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| |
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| public static class KeywordTokenizer extends CharTokenizer |
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| { |
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108 |
4
| public KeywordTokenizer(Reader in)
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|
109 |
| { |
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110 |
4
| super(in);
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111 |
| } |
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112 |
| |
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113 |
28
| public boolean isTokenChar(char c)
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|
114 |
| { |
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115 |
28
| return true;
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116 |
| } |
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117 |
| } |
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118 |
| |
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| public static class PositionTokenizer extends CharTokenizer |
|
120 |
| { |
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121 |
3
| public PositionTokenizer(Reader in)
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|
122 |
| { |
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123 |
3
| super(in);
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124 |
| } |
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125 |
| |
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126 |
30
| public boolean isTokenChar(char c)
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|
127 |
| { |
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128 |
30
| return !(',' == c);
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|
129 |
| } |
|
130 |
| } |
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131 |
| |
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132 |
| public static class NumberTokenizer extends CharTokenizer |
|
133 |
| { |
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134 |
3
| public NumberTokenizer(Reader in)
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|
135 |
| { |
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136 |
3
| super(in);
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137 |
| } |
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138 |
| |
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139 |
12
| public boolean isTokenChar(char c)
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|
140 |
| { |
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141 |
12
| return c == '.' || (c >= '0' && c <= '9');
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| } |
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143 |
| } |
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144 |
| } |
