hye,
I want to extract documents which contain a specific term.
I tried to do it in two different ways:
1 Using the 'iterator' termdocs = reader.termDocs(term);
2 Using search and examing Hits
turns out that the result are sometimes equal, sometimes the first is a
subset of the
second and sometimes there is no connection between the two results.
can somebody give me a hint?
bye
public void addDocumentsToTerm(int debug, String myterm) throws
Exception
{ TermEnum terms=reader.terms();
MyDocument doc;
Document docLucene;
int count=0;
boolean b=false;
if(debug==1) System.out.print("Checking (MyTerm) "+myterm+" ... ");
while (terms.next())
{ Term t = terms.term();
if(t.text().compareTo(myterm)==0)
{ TermDocs termDocs = reader.termDocs(t);
while(termDocs.next())
{
if(debug==1 && count==0) System.out.println("equal to (Term)
"+t.text());
count++;
docLucene = reader.document(termDocs.doc());
if(debug==1) System.out.println(" docLucene:
["+termDocs.doc()+"-
"+docLucene.getField("Code").stringValue()+"]
");
b=true;
}
System.out.println();
QueryParser pars = new QueryParser("Text",new
StandardAnalyzer());
Query q= pars.parse(t.text());
Hits hits = searcher.search(q);
System.out.println("Found "+hits.length()+" matches for query
"+q);
for(int i=0;i<hits.length();i++)
{ Document d = hits.doc(i);
System.out.println(" doc:
["+d.+"-"+d.getField("Code").stringValue()+"]");
}
System.out.println();
if(b==false)
System.out.println("No Document found for term:
"+myterm.getTerm());
if(debug==1)if(count < myterm.getDocFreq()&&count>0)
System.out.println(" Error term: "+myterm.getTerm()+", documents
found: "
+count+",
docFreq: "+myterm.getDocFreq());
return;
}
}
}
OUPUT
Checking (Myterm) zucca ... equal to (Term) zucca
docLucene: [9963-356 U.S. 256]
Found 8 matches for query Text:zucca
doc: [0-356 U.S. 256]
doc: [1-365 U.S. 290]
doc: [2-351 U.S. 91]
doc: [3-356 U.S. 660]
doc: [4-365 U.S. 265]
doc: [5-377 U.S. 235]
doc: [6-435 U.S. 519]
doc: [7-441 U.S. 281]
Error term: zucca, documents found: 1, docFreq: 8
Checking (Myterm) zimroth ... equal to (Term) zimroth
doc: [16478-476 U.S. 467]
doc: [17142-492 U.S. 257]
doc: [17208-488 U.S. 235]
doc: [17911-484 U.S. 1]
doc: [17920-487 U.S. 1]
doc: [18010-484 U.S. 301]
Found 8 matches for query Text:zimroth
doc: [0-389 U.S. 143]
doc: [1-468 U.S. 981]
doc: [2-489 U.S. 688]
doc: [3-491 U.S. 781]
doc: [4-436 U.S. 412]
doc: [5-445 U.S. 573]
doc: [6-462 U.S. 213]
doc: [7-468 U.S. 897]
Error term: zimroth, documents found: 6, docFreq: 8
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