/**
* We can only do this if dynamic scripting is enabled. In elasticsearch.yml:
* script.disable_dynamic: false
* @see vendor/ruffin/elastica/test/bin/run_elasticsearch.sh
*
* @param array $terms
* @return \Elastica\Aggregation\Sum
*/
protected function termsAggregation(array $terms)
{
$terms = str_replace('"', '\\"', $terms);
$script = '
keywords = ["' . implode('","', $terms) . '"]
total = 0
for (term in keywords) {
total += _index["revisions.text"][term].tf()
}
return total';
$script = new \Elastica\Script($script, null, 'groovy');
$aggregation = new \Elastica\Aggregation\Sum('ttf');
// $aggregation->setScript() doesn't seem to properly set 'lang': 'groovy'
// see https://github.com/ruflin/Elastica/pull/748
// $aggregation->setScript( $script );
$aggregation->setParams(array('lang' => 'groovy'));
$aggregation->setParam('script', $script->getScript());
return $aggregation;
}
