How to filter a MoreLikeThis Query

Question

I am using SOLR and trying to filter a MoreLikeThis query. Every time I do the filter I come up with zero results. Here is the code I am using:

var results = solr.Query(new SolrQuery("id:" + id)
                         && !new SolrQuery("siteid:" + SiteId), new QueryOptions
{
    MoreLikeThis = new MoreLikeThisParameters(new[] { "content" })
    {
        MinDocFreq = 1,
        MinTermFreq = 1,
        Count = rows
    },
    Fields = new[] { "id" },
    OrderBy = new[] { new SortOrder("score", Order.ASC) },
    Start = start
});

as you can see !new SolrQuery("site:" + SiteId) is the filter. When I add this filter in the query I get no results.

Here is what the query does. I have a bunch of webpages in the solr index:

• id
• Title
• Content
• siteid

The morelikethis query takes a id then fetches similar documents. The filter is suppose to filter webpages by the siteid. When I apply the siteid filter it does not work. Any ideas on this?

Answer 1

It seems you want to use the MoreLikeThis handler, not MoreLikeThis as a component.

There is a patch implementing this in SolrNet, currently under review. I encourage you to take a look at the patch and give us feedback about it!