Question

我有类似于以下代码的内容：

[...]
while($result=mysql_fetch_assoc($query)){
    //Build a doc
    $doc = new Zend_Search_Lucene_Document();

    [...]

    $doc->addField(Zend_Search_Lucene_Field::text('category', sanitize($result["category"])));
    $all_values=explode(',',$result["value"]);
    $i=0;
    foreach ($all_values as $value) {
        $doc->addField(Zend_Search_Lucene_Field::text('value_'.($i++), urlencode($value)));
    }

    [...]

    //Add to doc
    $index->addDocument($doc);
}
[...]

现在我想只显示搜索后分数较高的字段value_...。

我怎么能这样做？

Answer 1

在考虑了一下之后，我已经解决了我的问题。

Zend Lucene按分数命令结果，因此，我需要做的是为$value循环的每个foreach创建一个doc，然后为我当前结果的ID创建一个索引（称为res_id）在foreach内部。这样，我可以在搜索后以编程方式仅显示同一res_id的一个结果。

所以我的代码变成了：

[...]
while($result=mysql_fetch_assoc($query)){
    $all_values=explode(',',$result["value"]);
    //Create a Doc foreach value of $all_values and gave them the same category of the result of the query
    foreach ($all_values as $value) {
        //Build a doc
        $doc = new Zend_Search_Lucene_Document();

        [...]

        //Added res_id just to help grouping the results
        $doc->addField(Zend_Search_Lucene_Field::unIndexed('res_id', sanitize($result["id"])));

        $doc->addField(Zend_Search_Lucene_Field::text('category', sanitize($result["category"])));
        //Renamed the field to value
        $doc->addField(Zend_Search_Lucene_Field::text('value', urlencode($value)));

        [...]

        //Add to doc
        $index->addDocument($doc);
    }
}
[...]

现在，当我进行搜索时，我只显示第一次出现的res_id（得分更高的那个）。

以下是我在Controller上的代码，该代码向视图发送包含项目和总项目的数组：

[...]
public function indexAction()
{
    $this->view->query=urldecode($this->_getParam("query"));
    if ($this->view->query){
        //open the index
        $index = new Zend_Search_Lucene('path/to/lucene/index');
        $hits = $index->find($this->view->query);
        $executed_ids=array();
        $total=0;
        $this->view->items=array();
        foreach ($hits as $hit) {
            //Pass item to view only if it is not listed yet on $executed_ids
            if (!$executed_ids[$hit->res_id]){
                $this->view->items[]=$hit;
                $executed_ids[$hit->res_id]=true;
                $total++;
            }
        }
        $this->view->total_hits=$total;
    }
}
[...]

如何在Zend Lucene上获得一个领域的得分

1 个答案: