[TYPO3-Solr] Use solr fulltext search as a filter in my extension

[Rolf Nakielski]

OK - it may be a good idea to do all filtering by solr - but for various
reasons this was not suitable for our project.
But we finally integrated a solr full text search in our extension using
the indexing for our table and relations as described for tx_news and do
the search like this in our repository:

        if($filter->getSearchString()){
            $searchString = urlencode(str_replace(' ', '+',
trim($filter->getSearchString())));
            $url = '
http://localhost:8080/mysolr/mycore/select?rows=99999&wt=xml&fq=type:tx_myext_domain_model_something&fl=uid&q='
. $searchString;
            $xmlString = file_get_contents($url);
            $xml = simplexml_load_string($xmlString);
            if($xml){
                $result =
$xml->xpath('/response/result/doc/int[@name="uid"]');
                foreach($result as $uid){
                    $searchUids[] = intval($uid);
                }
            }
        }

The array $searchUids can than be used in the query among the other filters.
Pretty easy to do and works well.

Maybe this helps anybody who needs to do something similar.

rolf