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I'm doing an Examine search using a raw string like this:
IEnumerable<SearchResult> SearchResults = searchProvider.Search(searchCriteria.RawQuery( examineQuery )).OrderByDescending(r => r.Fields["publishedDate"]);
But this fails if any of the items in the index don't have a "publishedDate" field.
Is it possible to do something like this?
IEnumerable<SearchResult> SearchResults = searchProvider.Search(searchCriteria.RawQuery( examineQuery )).OrderByDescending(r => (r.Fields["publishedDate"] == "" ? {some default value} : r.Fields["publishedDate"]));
Hmm. It looks like a custom IComparer might be the way to go:
Comparer comparer = new MyComparer();IEnumerable<SearchResult> SearchResults = searchProvider.Search(searchCriteria.RawQuery(
examineQuery )).OrderByDescending(r => r.Fields["publishedDate"], comparer);
But I can't get this working either - here's my current comparer class:
public class MyComparer : IComparer<object> { public int Compare(object x, object y) { DateTime oldestDate = DateTime.MinValue; string oldestDateString = oldestDate.Year.ToString() + "-" + oldestDate.Month.ToString() + "-" + oldestDate.Day.ToString();
string valueX = (x == null ? oldestDateString : x.ToString()); string valueY = (y == null ? oldestDateString : y.ToString());
return valueX.CompareTo(valueY); } }
But this is still throwing errors. If one of my index items doesn't have a "publishedDate" field, I want it to treat the date as equivalent to DateTime.MinValue.
Help....
M
is working on a reply...
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Examine search - OrderByDescending: can I fallback to a default value if a particular field doesn't exist?
I'm doing an Examine search using a raw string like this:
IEnumerable<SearchResult> SearchResults = searchProvider.Search(searchCriteria.RawQuery(
examineQuery
)).OrderByDescending(r => r.Fields["publishedDate"]);
But this fails if any of the items in the index don't have a "publishedDate" field.
Is it possible to do something like this?
IEnumerable<SearchResult> SearchResults = searchProvider.Search(searchCriteria.RawQuery(
examineQuery
)).OrderByDescending(r => (r.Fields["publishedDate"] == "" ? {some default value} : r.Fields["publishedDate"]));
Hmm. It looks like a custom IComparer might be the way to go:
Comparer comparer = new MyComparer();
IEnumerable<SearchResult> SearchResults = searchProvider.Search(searchCriteria.RawQuery(
examineQuery
)).OrderByDescending(r => r.Fields["publishedDate"], comparer);
But I can't get this working either - here's my current comparer class:
public class MyComparer : IComparer<object>
{
public int Compare(object x, object y)
{
DateTime oldestDate = DateTime.MinValue;
string oldestDateString = oldestDate.Year.ToString() + "-" + oldestDate.Month.ToString() + "-" + oldestDate.Day.ToString();
string valueX = (x == null ? oldestDateString : x.ToString());
string valueY = (y == null ? oldestDateString : y.ToString());
return valueX.CompareTo(valueY);
}
}
But this is still throwing errors. If one of my index items doesn't have a "publishedDate" field, I want it to treat the date as equivalent to DateTime.MinValue.
Help....
M
is working on a reply...
This forum is in read-only mode while we transition to the new forum.
You can continue this topic on the new forum by tapping the "Continue discussion" link below.