annotate src/goodjava/lucene/api/LuceneUtils.java @ 1474:13cbce740e1e

LowercaseAnalyzer
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 17 Apr 2020 21:53:09 -0600
parents e5d48b85351c
children c62324841dfb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1460
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
1 package goodjava.lucene.api;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
2
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
3 import java.util.Map;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
4 import java.util.HashMap;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
5 import java.util.List;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
6 import java.util.ArrayList;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
7 import org.apache.lucene.document.Document;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
8 import org.apache.lucene.index.IndexableField;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
9 import org.apache.lucene.index.Term;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
10 import org.apache.lucene.util.BytesRef;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
11 import org.apache.lucene.util.NumericUtils;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
12
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
13
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
14 public final class LuceneUtils {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
15 private LuceneUtils() {} // never
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
16
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
17 public static Object getValue(IndexableField ifld) {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
18 BytesRef br = ifld.binaryValue();
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
19 if( br != null )
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
20 return br.bytes;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
21 Number n = ifld.numericValue();
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
22 if( n != null )
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
23 return n;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
24 String s = ifld.stringValue();
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
25 if( s != null )
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
26 return s;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
27 throw new RuntimeException("invalid field type for "+ifld);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
28 }
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
29
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
30 public static Map<String,Object> toMap(Document doc) {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
31 if( doc==null )
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
32 return null;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
33 Map<String,Object> map = new HashMap<String,Object>();
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
34 for( IndexableField ifld : doc ) {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
35 String name = ifld.name();
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
36 Object value = getValue(ifld);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
37 Object old = map.get(name);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
38 if( old == null ) {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
39 map.put(name,value);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
40 } else {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
41 List list;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
42 if( old instanceof List ) {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
43 list = (List)old;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
44 } else {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
45 list = new ArrayList();
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
46 list.add(old);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
47 map.put(name,list);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
48 }
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
49 list.add(value);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
50 }
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
51 }
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
52 return map;
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
53 }
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
54
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
55 public static Term term(String name,Object value) {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
56 if( value instanceof String ) {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
57 return new Term(name,(String)value);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
58 } else if( value instanceof Long ) {
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
59 BytesRef br = new BytesRef();
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
60 NumericUtils.longToPrefixCoded((Long)value,0,br);
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
61 return new Term(name,br);
1461
e5d48b85351c start lucene.logging
Franklin Schmidt <fschmidt@gmail.com>
parents: 1460
diff changeset
62 } else if( value instanceof Integer ) {
e5d48b85351c start lucene.logging
Franklin Schmidt <fschmidt@gmail.com>
parents: 1460
diff changeset
63 BytesRef br = new BytesRef();
e5d48b85351c start lucene.logging
Franklin Schmidt <fschmidt@gmail.com>
parents: 1460
diff changeset
64 NumericUtils.intToPrefixCoded((Integer)value,0,br);
e5d48b85351c start lucene.logging
Franklin Schmidt <fschmidt@gmail.com>
parents: 1460
diff changeset
65 return new Term(name,br);
1460
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
66 } else
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
67 throw new RuntimeException("invalid value type "+value.getClass()+"' for term '"+name+"'");
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
68 }
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
69
3ab0d043370f start lucene.api
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
70 }