Hi list, regarding the bug on having "-" character in query, one solution could be the use of fuzzyQuery in Lucene. fuzzyQuery is less strict than termQuery.
I made some tests adding 2 parameters on the interface :
- fuzzy (on/off)
- similarity : float default 0.8
When querying using demo data :
- "Hydrological" + fuzzy off return 1 result "Hydrological basins in Africa (SAMPLE DATA!)"
- "Hydrological" + fuzzy on return 1 result "Hydrological basins in Africa (SAMPLE DATA!)"
- "Hidrological" + fuzzy off return 0 result
- "Hidrological" or "Hidrologicàl" + fuzzy on return 1 result "Hydrological basins in Africa (SAMPLE DATA!)"
- "Hidrological" + fuzzy on + similarity = 0.2 return 2 results "Hydrological basins in Africa (SAMPLE DATA!)" +
Forests and Drylands Programme: Forests Homepage (SAMPLE DATA) ... I don't know why but this is "fuzzy"
FuzzyQuery could be relevant when having special character "éàèôï..." and could be easier than searching in java for special character and puting ? to the TermQuery to find something.
Any comments on that point ?
Francois.
PS : Changed made for testing :
_________________________________________________________________
Add 2 form elements to the main page / Main-page.xsl :
Fuzzy : <input type="checkbox" class="content" name="fuzzy"/><br/>
Similarity : <input class="content" name="similarity" size="2" value=".8"/><br/>
_________________________________________________________________
Add a FuzzyQuery type to the Lucene.xsl and use it when fuzzy is on :
<xsl:variable name="fuzzy" select="string(/request/fuzzy)"/>
<xsl:variable name="similarity" select="/request/similarity"/>
<!-- simple string -->
<xsl:otherwise>
<xsl:choose>
<xsl:when test="$fuzzy='on'">
<FuzzyQuery fld="{$field}" txt="{$expr/@text}" sim="{$similarity}"/>
</xsl:when>
<xsl:otherwise>
<TermQuery fld="{$field}" txt="{$expr/@text}"/>
</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
_________________________________________________________________
Just do the FuzzyQuery in Java / LuceneSearcher.java line 199 :
else if (name.equals("FuzzyQuery"))
{
String fld = xmlQuery.getAttributeValue("fld");
Float sim = Float.valueOf(xmlQuery.getAttributeValue("sim"));
String txt = xmlQuery.getAttributeValue("txt").toLowerCase();
return new FuzzyQuery(new Term(fld, txt), sim.floatValue());
}
-----Message d'origine-----
De : geonetwork-users-admin@lists.sourceforge.net [mailto:geonetwork-users-admin@lists.sourceforge.net] De la part de Jeroen Ticheler
Envoyé : vendredi 17 février 2006 15:03
À : Giaccio Roberto; François Prunayre
Cc : geonetwork-users@lists.sourceforge.net
Objet : Re: [GeoNetwork-users] Search problem when having "-" character in query
I filed a bug report for this.
Jeroen
On 1 Feb 2006, at 12:41, Roberto Giaccio wrote:
Ciao Francois,
I think that the string containing "-" is split into works by Lucene
when the metadata is indexed, but not when it is used as a search
term.
I have to check and see how to solve this.Roberto
On 31 Jan 2006, at 15:16, François Prunayre wrote:
Hi list, I noticed one problem when having "-" character in query
Searching for Eure loir get 70 results
http://sandre.eaufrance.fr/geonetwork/srv/fr/main.search?
extended=off&remote=off&attrset=geo&any=Eure+loir&hitsPerPage=10Searching for Eure-et-Loir get 0 results
http://sandre.eaufrance.fr/geonetwork/srv/fr/main.search?
extended=off&remote=off&attrset=geo&any=Eure-et-Loir&hitsPerPage=10Searching for "Eure-et-Loir" get 0 results
http://sandre.eaufrance.fr/geonetwork/srv/fr/main.search?
extended=off&remote=off&attrset=geo&any=%22Eure-et-Loir%
22&hitsPerPage=10Any ideas one what's wrong ?
Thanks for your help. Francois
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