protected internal IBooleanOperation GroupedFlexibleInternal(string[] fields, BooleanOperation[] operations, IExamineValue[] fieldVals, BooleanClause.Occur occurance)
{
//if there's only 1 query text we want to build up a string like this:
//(field1:query field2:query field3:query)
//but Lucene will bork if you provide an array of length 1 (which is != to the field length)
var flags = new BooleanClause.Occur[operations.Count()];
for (int i = 0; i < flags.Length; i++)
flags[i] = operations.ElementAt(i).ToLuceneOccurance();
var queryVals = new IExamineValue[fields.Length];
if (fieldVals.Length == 1)
{
for (int i = 0; i < queryVals.Length; i++)
queryVals[i] = fieldVals[0];
}
else
{
queryVals = fieldVals;
}
var qry = new BooleanQuery();
for (int i = 0; i < fields.Length; i++)
{
var q = GetFieldInternalQuery(fields[i], queryVals[i], true);
if (q != null)
{
qry.Add(q, flags[i]);
}
}
this.Query.Add(qry, occurance);
return new LuceneBooleanOperation(this);
}
