internal static string CanCompile(QueryInfo queryInfo, bool withMessages)
{
var msg = "error";
if (queryInfo.AllVersions)
{
if (withMessages)
{
msg = "Cannot compile to SQL: AllVersions";
}
return(msg);
}
if (queryInfo.CountOnly)
{
if (withMessages)
{
msg = "Cannot compile to SQL: CountOnly";
}
return(msg);
}
if (0 < queryInfo.Top)
{
if (withMessages)
{
msg = "Cannot compile to SQL: Top:" + queryInfo.Top;
}
return(msg);
}
if (0 < queryInfo.Skip)
{
if (withMessages)
{
msg = "Cannot compile to SQL: Skip:" + queryInfo.Skip;
}
return(msg);
}
if (0 < queryInfo.PhraseQueries)
{
if (withMessages)
{
msg = "Cannot compile to SQL: PhraseQuery is forbidden.";
}
return(msg);
}
if (0 < queryInfo.FuzzyQueries)
{
if (withMessages)
{
msg = "Cannot compile to SQL: FuzzyQuery is forbidden.";
}
return(msg);
}
if (0 < queryInfo.QuestionMarkWildcards)
{
if (withMessages)
{
msg = "Cannot compile to SQL: a question mark wildcard exists.";
}
return(msg);
}
if (0 < queryInfo.FullRangeNumericQueries + queryInfo.FullRangeTermQueries)
{
if (withMessages)
{
msg = "Cannot compile to SQL: in a range query both limit are defined.";
}
return(msg);
}
var forbiddenFields = queryInfo.QueryFieldNames.Except(_enabledFields).ToArray();
if (forbiddenFields.Length > 0)
{
if (withMessages)
{
msg = string.Format("Cannot compile to SQL: Forbidden fields: [{0}]", string.Join(", ", forbiddenFields));
}
return(msg);
}
forbiddenFields = queryInfo.SortFieldNames.Except(_enabledFields).ToArray();
if (forbiddenFields.Length > 0)
{
if (withMessages)
{
msg = string.Format("Cannot compile to SQL: Forbidden sort fields: [{0}]", string.Join(", ", forbiddenFields));
}
return(msg);
}
if (!queryInfo.QueryFieldNames.Intersect(_indexedFields).Any())
{
if (withMessages)
{
msg = string.Format("Cannot compile to SQL: Missing required field, at least one of the followings: [{0}]", string.Join(", ", _indexedFields));
}
return(msg);
}
return(null);
}
public QueryClassifierVisitor(QueryInfo queryInfo)
{
_queryInfo = queryInfo;
}