PHP Lucene::getResultSetLimit方法代码示例

 public function testLimitingResult()
 {
     $index = Lucene\Lucene::open(dirname(__FILE__) . '/_index23Sample/_files');
     $storedResultSetLimit = Lucene\Lucene::getResultSetLimit();
     Lucene\Lucene::setResultSetLimit(3);
     $hits = $index->find('"reporting bugs"', 'path');
     $this->assertEquals(count($hits), 3);
     $expectedResultset = array(array(7, 0.212395, 'IndexSource/contributing.bugs.html'), array(0, 0.247795, 'IndexSource/contributing.documentation.html'), array(2, 0.176996, 'IndexSource/contributing.patches.html'));
     foreach ($hits as $resId => $hit) {
         $this->assertEquals($hit->id, $expectedResultset[$resId][0]);
         $this->assertTrue(abs($hit->score - $expectedResultset[$resId][1]) < 1.0E-6);
         $this->assertEquals($hit->path, $expectedResultset[$resId][2]);
     }
     Lucene\Lucene::setResultSetLimit($storedResultSetLimit);
 }

    /**
     * Performs a query against the index and returns an array
     * of Zend_Search_Lucene_Search_QueryHit objects.
     * Input is a string or Zend_Search_Lucene_Search_Query.
     *
     * @param \Zend\Search\Lucene\Search\QueryParser|string $query
     * @return array \Zend\Search\Lucene\Search\QueryHit
     * @throws \Zend\Search\Lucene\Exception\InvalidArgumentException
     * @throws \Zend\Search\Lucene\Exception\RuntimeException
     */
    public function find($query)
    {
        if (is_string($query)) {
            $query = Search\QueryParser::parse($query);
        }

        if (!$query instanceof Search\Query\AbstractQuery) {
            throw new InvalidArgumentException('Query must be a string or Zend\Search\Lucene\Search\Query object');
        }

        $this->commit();

        $hits   = array();
        $scores = array();
        $ids    = array();

        $query = $query->rewrite($this)->optimize($this);

        $query->execute($this);

        $topScore = 0;

        $resultSetLimit = Lucene::getResultSetLimit();
        foreach ($query->matchedDocs() as $id => $num) {
            $docScore = $query->score($id, $this);
            if( $docScore != 0 ) {
                $hit = new Search\QueryHit($this);
                $hit->id = $id;
                $hit->score = $docScore;

                $hits[]   = $hit;
                $ids[]    = $id;
                $scores[] = $docScore;

                if ($docScore > $topScore) {
                    $topScore = $docScore;
                }
            }

            if ($resultSetLimit != 0  &&  count($hits) >= $resultSetLimit) {
                break;
            }
        }

        if (count($hits) == 0) {
            // skip sorting, which may cause a error on empty index
            return array();
        }

        if ($topScore > 1) {
            foreach ($hits as $hit) {
                $hit->score /= $topScore;
            }
        }

        if (func_num_args() == 1) {
            // sort by scores
            array_multisort($scores, SORT_DESC, SORT_NUMERIC,
                            $ids,    SORT_ASC,  SORT_NUMERIC,
                            $hits);
        } else {
            // sort by given field names

            $argList    = func_get_args();
            $fieldNames = $this->getFieldNames();
            $sortArgs   = array();

            // PHP 5.3 now expects all arguments to array_multisort be passed by
            // reference (if it's invoked through call_user_func_array());
            // since constants can't be passed by reference, create some placeholder variables.
            $sortReg    = SORT_REGULAR;
            $sortAsc    = SORT_ASC;
            $sortNum    = SORT_NUMERIC;

            $sortFieldValues = array();

            for ($count = 1; $count < count($argList); $count++) {
                $fieldName = $argList[$count];

                if (!is_string($fieldName)) {
                    throw new RuntimeException('Field name must be a string.');
                }

                if (strtolower($fieldName) == 'score') {
                    $sortArgs[] = &$scores;
                } else {
                    if (!in_array($fieldName, $fieldNames)) {
                        throw new RuntimeException('Wrong field name.');
                    }

//.........这里部分代码省略.........