examine search criteria with wildcards

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Dominik Merkle 9 posts 41 karma points

Feb 09, 2015 @ 16:39

Extending Umbraco

Hi,

I try to create a search criteria with wildcards for an autocomplete search.

How can I use wildcard search if I make my own search criteria like this:

var criteria = ExamineManager.Instance
                    .SearchProviderCollection["ExternalSearcher"]
                    .CreateSearchCriteria();

                string[] dynquery = new string[] { query };
                if (multipleGroupedOr)
                {
                    dynquery = query.Split(multipleGroupedOrSeparator);
                }

                var crawl = criteria.GroupedOr(fieldnames, dynquery)
                    .Not()
                    .Field("umbracoNaviHide", "1")
                    .Not()
                    .Field("nodeTypeAlias", "Image")
                    .Compile();

                ISearchResults SearchResults = ExamineManager.Instance
                    .SearchProviderCollection["ExternalSearcher"]
                    .Search(crawl);

MultipleCharacterWildcard() on dynquery doesn't work.

var crawl = criteria.GroupedOr(fieldnames, dynquery.MultipleCharacterWildcard())
                    .Not()
                    .Field("umbracoNaviHide", "1")
                    .Not()
                    .Field("nodeTypeAlias", "Image")
                    .Compile();

Thanks for any help!

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Ismail Mayat 4511 posts 10090 karma points MVP 2x admin c-trib

Feb 10, 2015 @ 11:39

100

dynquery is array string right? The multiplecharacterwildcard is extension for string which will tag * into end of term. So you could replace your grouped or with a loop and for each term wilcard it. What I usually have is using gathering node data all my fields munged into one field and then i can search on that. Are you currently getting a code compile error or is it all running but no search results coming back? If no saerch results can you do criteria.ToString() and paste back the generated query.

Regards

Ismail

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Dominik Merkle 9 posts 41 karma points

Feb 10, 2015 @ 16:31

Hi Ismail,

i have change my code with a loop but If I use "MultipleCharacterWildcard()" on a string, Visual Studio show me the error "string does not contain a definition for MultipleCharacterWildcard". What's wrong?

var criteria = ExamineManager.Instance
 .SearchProviderCollection["ExternalSearcher"]
 .CreateSearchCriteria();

 string[] dynquery = new string[] { query };
 if (multipleGroupedOr)
 {
 dynquery = query.Split(multipleGroupedOrSeparator);
 }

 Examine.SearchCriteria.IBooleanOperation crawl = null;

 foreach (var word in dynquery)
 {
 if (crawl == null)
 {
 crawl = criteria.GroupedOr(fieldnames, word.MultipleCharacterWildcard()); 
 } 
 else
 {
 crawl = crawl.Or().GroupedOr(fieldnames, word); 
 }
 }

 crawl = crawl
 .Not()
 .Field("umbracoNaviHide", "1")
 .Not()
 .Field("nodeTypeAlias", "Image");


 ISearchResults SearchResults = ExamineManager.Instance
 .SearchProviderCollection["ExternalSearcher"]
 .Search(crawl.Compile());

Regards
Dominik

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Ismail Mayat 4511 posts 10090 karma points MVP 2x admin c-trib

Feb 10, 2015 @ 17:21
0
Dominik,

You maybe missing a using statement is in one of these
```
using Examine;
    using Examine.LuceneEngine;
    using Examine.LuceneEngine.SearchCriteria;
    using Examine.SearchCriteria;
```
Regards

Ismail
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Dominik Merkle 9 posts 41 karma points

Feb 10, 2015 @ 17:31
0
That's it.
```
using Examine.LuceneEngine;
using Examine.LuceneEngine.SearchCriteria;
```
are missed.

Thank you.
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Dominik Merkle 9 posts 41 karma points

Feb 10, 2015 @ 18:13

Hi Ismail,

the wildcard and the autocomplete works. But if I search for a longtail for example "search term" there is no result. This is my code:

var criteria = ExamineManager.Instance
                .SearchProviderCollection["ExternalSearcher"]
                .CreateSearchCriteria();



            string[] dynquery = new string[] { query };
            if (multipleGroupedOr)
            {
                dynquery = query.Split(multipleGroupedOrSeparator);
            }

            Examine.SearchCriteria.IBooleanOperation crawl = null;

            foreach (var word in dynquery)
            {
                if (crawl == null)
                {
                    crawl = criteria.GroupedOr(fieldnames, word.MultipleCharacterWildcard()); 
                } 
                else
                {
                    crawl = crawl.Or().GroupedOr(fieldnames, word.MultipleCharacterWildcard()); 
                }
            }

            crawl = crawl
                .Not()
                .Field("umbracoNaviHide", "1")
                .Not()
                .Field("nodeTypeAlias", "Image");


            ISearchResults SearchResults = ExamineManager.Instance
                .SearchProviderCollection["ExternalSearcher"]
                .Search(crawl.Compile());

Any idea? Thanks

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Ismail Mayat 4511 posts 10090 karma points MVP 2x admin c-trib

Feb 10, 2015 @ 18:32

0

Do criteria.ToString() to see the generated query that will give you more information as to what is going on.

Regards

Ismail

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Dominik Merkle 9 posts 41 karma points

Feb 20, 2015 @ 13:17

0

Hi Ismail,

thanks for your help. To see the generated query helps a lot.

Regards Dominik

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