| public addDecayFunction ( string $function, string $field, string $origin, string $scale, string $offset = null, float $decay = null, float $weight = null, AbstractQuery $filter = null, string $multiValueMode = null ) | ||
| $function | string | see DECAY_* constants for valid options |
| $field | string | the document field on which to perform the decay function |
| $origin | string | the origin value for this decay function |
| $scale | string | a scale to define the rate of decay for this function |
| $offset | string | If defined, this function will only be computed for documents with a distance from the origin greater than this value |
| $decay | float | optionally defines how documents are scored at the distance given by the $scale parameter |
| $weight | float | optional factor by which to multiply the score at the value provided by the $scale parameter |
| $filter | AbstractQuery | a filter associated with this function |
| $multiValueMode | string | see MULTI_VALUE_MODE_* constants for valid options |
public function addDecayFunction($function, $field, $origin, $scale, $offset = null, $decay = null, $weight = null, AbstractQuery $filter = null, $multiValueMode = null)
{
$functionParams = [$field => ['origin' => $origin, 'scale' => $scale]];
if (!is_null($offset)) {
$functionParams[$field]['offset'] = $offset;
}
if (!is_null($decay)) {
$functionParams[$field]['decay'] = (double) $decay;
}
if (null !== $multiValueMode) {
$functionParams['multi_value_mode'] = $multiValueMode;
}
return $this->addFunction($function, $functionParams, $filter, $weight);
} public function testGauss()
{
$query = new FunctionScore();
$query->addDecayFunction(FunctionScore::DECAY_GAUSS, 'location', $this->locationOrigin, "4mi");
$query->addDecayFunction(FunctionScore::DECAY_GAUSS, 'price', 0, 10);
$response = $this->type->search($query);
$results = $response->getResults();
// the document with the closest location and lowest price should be scored highest
$result0 = $results[0]->getData();
$this->assertEquals("Mr. Frostie's", $result0['name']);
}
