/// <summary>
/// (non-Javadoc)
/// @see org.apache.lucene.xmlparser.QueryObjectBuilder#process(org.w3c.dom.Element)
/// </summary>
/// <param name="e"></param>
/// <returns></returns>
public virtual Query GetQuery(XmlElement e)
{
string text = DOMUtils.GetText(e);
try
{
Query q = null;
if (unSafeParser != null)
{
//synchronize on unsafe parser
lock (unSafeParser)
{
q = unSafeParser.Parse(text);
}
}
else
{
string fieldName = DOMUtils.GetAttribute(e, "fieldName", defaultField);
//Create new parser
QueryParser parser = CreateQueryParser(fieldName, analyzer);
q = parser.Parse(text);
}
q.Boost = DOMUtils.GetAttribute(e, "boost", 1.0f);
return(q);
}
catch (ParseException e1)
{
throw new ParserException(e1.Message);
}
}
/// <summary>
/// (non-Javadoc)
/// @see org.apache.lucene.xmlparser.QueryObjectBuilder#process(org.w3c.dom.Element)
/// </summary>
/// <param name="e"></param>
/// <returns></returns>
public virtual Query GetQuery(XmlElement e)
{
string text = DOMUtils.GetText(e);
try
{
Query q = null;
if (unSafeParser != null)
{
//synchronize on unsafe parser
UninterruptableMonitor.Enter(unSafeParser);
try
{
q = unSafeParser.Parse(text);
}
finally
{
UninterruptableMonitor.Exit(unSafeParser);
}
}
else
{
string fieldName = DOMUtils.GetAttribute(e, "fieldName", defaultField);
//Create new parser
QueryParser parser = CreateQueryParser(fieldName, analyzer);
q = parser.Parse(text);
}
q.Boost = DOMUtils.GetAttribute(e, "boost", 1.0f);
return(q);
}
catch (Lucene.Net.QueryParsers.Classic.ParseException e1) // LUCENENET: Classic QueryParser has its own ParseException that is different than the one in Support
{
throw new ParserException(e1.Message, e1);
}
}
public virtual Query GetQuery(XmlElement e)
{
XmlNodeList nl = e.GetElementsByTagName("Field");
int maxNumTerms = DOMUtils.GetAttribute(e, "maxNumTerms", DEFAULT_MAX_NUM_TERMS);
FuzzyLikeThisQuery fbq = new FuzzyLikeThisQuery(maxNumTerms, analyzer);
fbq.IgnoreTF = DOMUtils.GetAttribute(e, "ignoreTF", DEFAULT_IGNORE_TF);
for (int i = 0; i < nl.Count; i++)
{
XmlElement fieldElem = (XmlElement)nl.Item(i);
float minSimilarity = DOMUtils.GetAttribute(fieldElem, "minSimilarity", DEFAULT_MIN_SIMILARITY);
int prefixLength = DOMUtils.GetAttribute(fieldElem, "prefixLength", DEFAULT_PREFIX_LENGTH);
string fieldName = DOMUtils.GetAttributeWithInheritance(fieldElem, "fieldName");
string value = DOMUtils.GetText(fieldElem);
fbq.AddTerms(value, fieldName, minSimilarity, prefixLength);
}
fbq.Boost = DOMUtils.GetAttribute(e, "boost", 1.0f);
return(fbq);
}
/// <summary>
/// (non-Javadoc)
/// @see org.apache.lucene.xmlparser.QueryObjectBuilder#process(org.w3c.dom.Element)
/// </summary>
public virtual Query GetQuery(XmlElement e)
{
string fieldsList = e.GetAttribute("fieldNames"); //a comma-delimited list of fields
string[] fields = defaultFieldNames;
if ((fieldsList != null) && (fieldsList.Trim().Length > 0))
{
fields = fieldsList.Trim().Split(',').TrimEnd();
//trim the fieldnames
for (int i = 0; i < fields.Length; i++)
{
fields[i] = fields[i].Trim();
}
}
//Parse any "stopWords" attribute
//TODO MoreLikeThis needs to ideally have per-field stopWords lists - until then
//I use all analyzers/fields to generate multi-field compatible stop list
string stopWords = e.GetAttribute("stopWords");
ISet <string> stopWordsSet = null;
if ((stopWords != null) && (fields != null))
{
stopWordsSet = new JCG.HashSet <string>();
foreach (string field in fields)
{
TokenStream ts = null;
try
{
ts = analyzer.GetTokenStream(field, stopWords);
ICharTermAttribute termAtt = ts.AddAttribute <ICharTermAttribute>();
ts.Reset();
while (ts.IncrementToken())
{
stopWordsSet.Add(termAtt.ToString());
}
ts.End();
}
catch (IOException ioe)
{
throw new ParserException("IoException parsing stop words list in "
+ GetType().Name + ":" + ioe.Message);
}
finally
{
IOUtils.DisposeWhileHandlingException(ts);
}
}
}
MoreLikeThisQuery mlt = new MoreLikeThisQuery(DOMUtils.GetText(e), fields, analyzer, fields[0]);
mlt.MaxQueryTerms = DOMUtils.GetAttribute(e, "maxQueryTerms", DEFAULT_MAX_QUERY_TERMS);
mlt.MinTermFrequency = DOMUtils.GetAttribute(e, "minTermFrequency", DEFAULT_MIN_TERM_FREQUENCY);
mlt.PercentTermsToMatch = DOMUtils.GetAttribute(e, "percentTermsToMatch", DEFAULT_PERCENT_TERMS_TO_MATCH) / 100;
mlt.StopWords = stopWordsSet;
int minDocFreq = DOMUtils.GetAttribute(e, "minDocFreq", -1);
if (minDocFreq >= 0)
{
mlt.MinDocFreq = minDocFreq;
}
mlt.Boost = DOMUtils.GetAttribute(e, "boost", 1.0f);
return(mlt);
}
