public override Query VisitPhraseQuery(PhraseQuery phraseq)
{
_dump.Append("PhraseQ(");
var terms = phraseq.GetTerms();
PhraseQuery newQuery = null;
int index = 0;
int count = terms.Length;
while (index < count)
{
var visitedTerm = VisitTerm(terms[index]);
if (newQuery != null)
{
newQuery.Add(visitedTerm);
}
else if (visitedTerm != terms[index])
{
newQuery = new PhraseQuery();
for (int i = 0; i < index; i++)
newQuery.Add(terms[i]);
newQuery.Add(visitedTerm);
}
index++;
if (index < count)
_dump.Append(", ");
}
_dump.Append(", Slop:").Append(phraseq.GetSlop()).Append(BoostToString(phraseq)).Append(")");
if (newQuery != null)
return newQuery;
return phraseq;
}
/*
* Check if PhraseQuery A and B have overlapped part.
*
* ex1) A="a b", B="b c" => overlap; expandQueries={"a b c"}
* ex2) A="b c", B="a b" => overlap; expandQueries={"a b c"}
* ex3) A="a b", B="c d" => no overlap; expandQueries={}
*/
private void CheckOverlap(Dictionary<Query, Query> expandQueries, PhraseQuery a, PhraseQuery b)
{
if (a.Slop != b.Slop) return;
Term[] ats = a.GetTerms();
Term[] bts = b.GetTerms();
if (fieldMatch && !ats[0].Field.Equals(bts[0].Field)) return;
CheckOverlap(expandQueries, ats, bts, a.Slop, a.Boost);
CheckOverlap(expandQueries, bts, ats, b.Slop, b.Boost);
}
private static void VisitQuery(PhraseQuery query, AzureQueryLogger.IndentedTextWriter writer)
{
writer.WriteLine("Slop: {0}", (object)query.Slop);
foreach (Term term in query.GetTerms())
AzureQueryLogger.VisitTerm(term, writer);
}
private SectionSearchQueryPlan TranslatePhraseQuery(PhraseQuery query)
{
Term[] terms = query.GetTerms();
TermNode[] nodes = new TermNode[terms.Length];
int[] positions = query.GetPositions();
for (int i = 0; i < terms.Length; i++)
{
nodes[i] = new TermNode(terms[i], positions[i], _reader);
}
return new PhraseNode(nodes, _reader);
}
private ParameterizedSql BuildPhrase(PhraseQuery phraseQuery)
{
var termsAdded = 0;
var field = "";
var queryStringBuilder = new StringBuilder();
foreach (var term in phraseQuery.GetTerms())
{
if (termsAdded == 0)
{
field = term.Field;
}
else if (termsAdded > 0)
{
queryStringBuilder.Append(" ");
}
queryStringBuilder.Append(term.Text);
termsAdded++;
}
Query query;
var queryString = queryStringBuilder.ToString();
if (queryString.Contains("?") || queryString.Contains("*"))
{
query = new WildcardQuery(new Term(field, queryString));
}
else
{
query = new TermQuery(new Term(field, queryString));
}
return Build(query);
}
public override Query VisitPhraseQuery(PhraseQuery phraseq)
{
var terms = phraseq.GetTerms();
PhraseQuery newQuery = null;
int index = 0;
int count = terms.Length;
while (index < count)
{
var visitedTerm = VisitTerm(terms[index]);
if (newQuery != null)
{
if (visitedTerm != null)
newQuery.Add(visitedTerm);
}
else if (visitedTerm != terms[index])
{
newQuery = new PhraseQuery();
for (int i = 0; i < index; i++)
newQuery.Add(terms[i]);
if (visitedTerm != null)
newQuery.Add(visitedTerm);
}
index++;
}
if (newQuery != null)
{
if (newQuery.GetTerms().Length > 0)
return newQuery;
return null;
}
return phraseq;
}
public override Query VisitPhraseQuery(PhraseQuery phraseq)
{
var terms = phraseq.GetTerms();
var field = terms[0].Field();
_text.Append(field);
_text.Append(":\"");
var positions = new int[terms.Length];
for (int i = 0; i < positions.Length; i++)
positions[i] = i;
var pieces = new string[terms.Length];
for (int i = 0; i < terms.Length; i++)
{
int pos = ((System.Int32)positions[i]);
System.String s = pieces[pos];
if (s == null)
s = (terms[i]).Text();
else
s += "|" + (terms[i]).Text();
pieces[pos] = s;
}
for (int i = 0; i < pieces.Length; i++)
{
if (i > 0)
_text.Append(' ');
System.String s = pieces[i];
if (s == null)
_text.Append('?');
else
_text.Append(s);
}
_text.Append("\"");
var slop = phraseq.GetSlop();
if (slop != 0)
{
_text.Append("~");
_text.Append(slop);
}
_text.Append(BoostToString(phraseq.GetBoost()));
return base.VisitPhraseQuery(phraseq);
}
protected virtual PhraseQuery VisitPhraseQuery(PhraseQuery p)
{
var qry = new PhraseQuery();
foreach (var t in p.GetTerms())
{
qry.Add(VisitTerm(t));
}
return qry;
}