Solr 的 Solarium - 嵌套文档

Question

我正在使用 Solr 9.4.1 和 Solarium 6.3.5。 阅读文档后，我认为我正确编码了实现，但我的文档不是在 Solr 中作为父/子关系创建的。它不是这样工作的吗？我需要更改搜索条件才能使用平面数组吗？我确实在 Solr 中看到，所有记录都有一个 root 键，对于父记录，它与其自己的 id 匹配，而子记录与其父记录匹配。但这是唯一告诉我这有效的参考。

这是我的代码，希望有人比我更了解 Solr/Solarium 才能看到问题。

public function syncForum()
    {
        $client = $this->solrclient;
        $update = $client->createUpdate();

        $db = db_connect();
        // Create arrays to store topic and comment documents
        $topicQuery = $db->query("SELECT
                            forum_topics.id AS topic_id,
                            forum_topics.topic_subject AS topic_subject,
                            forum_topics.topic_message AS topic_message,
                            forum_topics.created_at AS created_at,
                            forum_categories.title AS forum_category,
                            users.username AS topic_author
                        FROM
                            forum_topics
                        INNER JOIN forum_posts ON forum_posts.post_topic = forum_topics.id
                        LEFT JOIN users ON users.id = forum_posts.post_by
                        LEFT JOIN forum_categories ON forum_categories.id = forum_topics.topic_cat");
        $topicResult = $topicQuery->getResultArray();

        $documentArray = [];
        foreach ($topicResult as &$topic) {

            //Loop through topics and create a topic document
            $document = $update->createDocument();
            $document->id = $topic['topic_id'];
            $document->topic_subject = $topic['topic_subject'];
            $document->topic_message = $topic['topic_message'];
            $document->category = $topic['forum_category'];
            $document->author = $topic['topic_author'];
            // $document->_root_ = 'true';

            $topicDate = $topic['created_at'];
            $dateTime = new \DateTime($topicDate);
            $document->created_at = $dateTime->format("Y-m-d\TH:i:s\Z");

            $documentArray[] = $document;

            //For each topic, loop through the comments and create a comment document
            $commentQuery = $db->query("SELECT forum_posts.id, forum_posts.post_content AS comment_message, forum_posts.created_at, users.username AS author
                                 FROM forum_posts 
                                 LEFT JOIN users ON users.id = forum_posts.post_by
                                 WHERE post_topic =" . $topic['topic_id']);
            $comments = $commentQuery->getResultArray();

            $commArray = [];
            foreach ($comments as $i => $comment) {

                $commArray[$i]['id'] = $comment['id'];
                $commArray[$i]['comment_message'] = $comment['comment_message'];
                $commArray[$i]['author'] = $comment['author'];

                $originalDate = $comment['created_at'];
                $dateTime = new \DateTime($originalDate);
                $formattedDate = $dateTime->format("Y-m-d\TH:i:s\Z");

                $commArray[$i]['created_at'] = $formattedDate;
            }
            $document->childdocs = $commArray;
        }

        // add the documents and a commit command to the update query
        $update->addDocuments($documentArray);
        $update->addCommit();

        // this executes the query and returns the result
        $result = $client->update($update);
        // Output status information
        echo "Status: " . $result->getStatus() . " | Query Time: " . $result->getQueryTime() . PHP_EOL;
    }

Answer 1

请注意，您使用的字段

childdocs

是“伪字段”（即不是文档中的实际字段），因此，默认情况下，搜索查询的匹配文档不会包含任何嵌套字段孩子们的反应。

要使用文档的后代丰富结果，您需要通过将 [child] 添加到字段列表参数来使用

Child Doc Transformer

，例如。

fl=*,[child]

。您可能还需要将

_nest_path_

字段添加到架构（用于转换器）以启用更多功能。