/**
* Enables or disables highlighting of search terms in result teasers.
*
* @param boolean $highlighting Enables highlighting when set to TRUE, deactivates highlighting when set to FALSE, defaults to TRUE.
* @param integer $fragmentSize Size, in characters, of fragments to consider for highlighting.
* @see http://wiki.apache.org/solr/HighlightingParameters
* @return void
*/
public function setHighlighting($highlighting = true, $fragmentSize = 200)
{
if ($highlighting) {
$this->queryParameters['hl'] = 'true';
$this->queryParameters['hl.fragsize'] = (int) $fragmentSize;
$highlightingFields = $this->solrConfiguration->getSearchResultsHighlightingFields();
if ($highlightingFields != '') {
$this->queryParameters['hl.fl'] = $highlightingFields;
}
// the fast vector highlighter can only be used, when the fragmentSize is
// higher then 17 otherwise solr throws an exception
$useFastVectorHighlighter = $fragmentSize >= 18;
$wrap = explode('|', $this->solrConfiguration->getSearchResultsHighlightingWrap());
if ($useFastVectorHighlighter) {
$this->queryParameters['hl.useFastVectorHighlighter'] = 'true';
$this->queryParameters['hl.tag.pre'] = $wrap[0];
$this->queryParameters['hl.tag.post'] = $wrap[1];
} else {
$this->queryParameters['hl.simple.pre'] = $wrap[0];
$this->queryParameters['hl.simple.post'] = $wrap[1];
}
} else {
// remove all hl.* settings
foreach ($this->queryParameters as $key => $value) {
if (GeneralUtility::isFirstPartOfStr($key, 'hl')) {
unset($this->queryParameters[$key]);
}
}
}
}
