Re: NPE error when extending DefaultSolrHighlighter

[Koji Sekiguchi <ko...@r.email.ne.jp>]

(10/06/01 6:45), Gerald wrote:
> I was looking at solr-386 and thought I would try to create a custom
> highlighter for something I was doing.
>
> I created a class that looks something like this:
>
> public class CustomOutputHighlighter extends DefaultSolrHighlighter {
>           @Override
>           public NamedList doHighlighting(DocList docs, Query query,
> SolrQueryRequest req, String[] defaultFields) throws IOException {
>                   NamedList highlightedValues = super.doHighlighting(docs,
> query, req, defaultFields);
>
>                   // do more stuff here
>
>                   return highlightedValues
>                   }
> }
>
> and have replaced the<highlighting>  line in my solrconfig xml so that it
> looks something like this:
>
> <highlighting class="com.xxxxxxx.solr.highlight.CustomOutputHighlighter">
>
> and left all the existing default highlighting parameters as-is
>
> The code compiles with no problem, and should simply perform the normal
> highlighting (since all I am doing is calling the original doHighlighting
> code and returning the results).  However, when I start Solr, I get an NPE
> error:
>
>    
Try to put a constructor that has an argument SolrCore:

public CustomOutputHighlighter(SolrCore core){
     super(core);
}

Koji

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