I think the KeywordAnlyser bit is maybe a red herring, the problem seems
to be that you cant use * within double quotes, I made some changes to
my data and index to remove the space character
If I fed 54:puid* to my code it generates a Prefix Query and works as
required
Search Query Is54:puid*
Parsed Search Query Is54:puid*of type:class
org.apache.lucene.search.PrefixQuery
but with the quotes (which I would need if my value contained spaces) I
only get a Term Query (which doesnt handle wildcards)
Search Query Is54:"puid*"
Parsed Search Query Is54:puid*of type:class
org.apache.lucene.search.TermQuery
so why is this ?
thanks Paul
code is:
public List <Integer> generalSearch(String luceneSearch)
{
System.out.println("Search Query Is"+luceneSearch);
List <Integer> matchingRows = new ArrayList<Integer>();
try
{
//make a new index searcher with the inmemory (RAM) index.
IndexSearcher is = new IndexSearcher(directory);
//Build a query based on the searchString and cached analyzer
QueryParser parser = new QueryParser(ROW_NUMBER,analyzer);
Query query = parser.parse(luceneSearch);
System.out.println("Parsed Search Query
Is"+query.toString()+"of type:"+query.getClass());
//run the search
Hits hits = is.search(query);
Iterator i = hits.iterator();
while(i.hasNext())
{
Document doc = ((Hit)i.next()).getDocument();
matchingRows.add(new
Integer(doc.getField(ROW_NUMBER).stringValue()));
}
}
catch (Exception e)
{
e.printStackTrace();
}
System.out.println("Search Query Results Set:"+matchingRows.size());
return matchingRows;
}
Mark Miller wrote:
Perhaps not like whitespaceanalyzer does in all cases, but this code
QueryParser qp = new QueryParser("field", new
WhitespaceAnalyzer());
Query q = qp.parse("Does this tokenize*");
System.out.println(q.toString());
produces
field:Does field:this field:tokenize*
while this code
QueryParser qp = new QueryParser("field", new
KeywordAnalyzer());
Query q = qp.parse("Does this tokenize*");
System.out.println(q.toString());
Produces:
field:Does field:this field:tokenize*
The only difference is using KeywordAnalyzer rather than
WhitespaceAnalyzer.
I sure don't see the difference, and it's puzzled me on and off.
Erick
QueryParser breaks up "Does this tokenize*" before it even gets to the
Analyzer...each space separated term is fed to the analyzer one at a
time...unless they are surrounded in quotes in which case the whole
string in the quotes is fed into the analyzer.
- Mark
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