Zend Lucene仅在指定字段中使用筛选器搜索

Question

我使用ZF2搜索Lucene搜索网站上的产品。 我需要使用用户的输入文本搜索产品，并通过多个参数（例如类别和类型ID）筛选结果。 但是问题在于用户的输入是在所有字段中搜索的，我只需要在名称和描述字段中搜索。

下面是将产品添加到索引代码：

$index = Lucene::create('./data/index'); 

    $products = $this->getEntityManager()->getRepository('Application\Entity\Product')->findAll(); 

    foreach ($products as $product) { 
     echo "Adding ".$product->getName(). " to index\n"; 
     $doc = new LuceneDocument(); 

     $doc->addField(LuceneDocument\Field::keyword('type', 'product')); 
     $doc->addField(LuceneDocument\Field::keyword('product_id', (string)$product->getId())); 
     $doc->addField(LuceneDocument\Field::keyword('category_id', (string)$product->getCategory()->getId())); 

     $fieldName = LuceneDocument\Field::text('product_name', $product->getName()); 
     $fieldName->boost = 2.0; // Field weight 
     $doc->addField($fieldName); 

     $fieldDescription = LuceneDocument\Field::unStored('product_description', $product->getDescription()); 
     $fieldDescription->boost = 1.0; // Field weight 
     $doc->addField($fieldDescription); 

     $index->addDocument($doc); 
    } 

    $index->commit(); 

代码搜索：

$userQueryString = 'search input query string'; 
    $userQuery = LuceneSearch\QueryParser::parse($userQueryString); 
    // how to limit userQuery to search only in specific fields? 

    $typeTerm = new LuceneIndex\Term('product', 'type'); 
    $typeQuery = new LuceneSearch\Query\Term($typeTerm); 

    $categoryTerm = new LuceneIndex\Term(5, 'category_id'); 
    $categoryQuery = new LuceneSearch\Query\Term($categoryTerm); 

    $query = new LuceneSearch\Query\Boolean(); 
    $query->addSubquery($typeQuery, true /* required */); 
    $query->addSubquery($categoryQuery, true /* required */); 
    $query->addSubquery($userQuery, true /* required */); 

    $index = Lucene::open('./data/index'); 
    $hits = $index->find($query); 

    foreach ($hits as $hit) { 
     echo "Type: ".$hit->type."\n"; 
     echo "Id: ".$hit->product_id."\n"; 
     echo "Name: ".$hit->product_name."\n"; 
     echo "Category: ".$hit->category_id."\n"; 
     echo "\n"; 
    } 

Answer 1

文档代表的是

从Java Lucene的第一个也是最显著差异是通过所有字段默认搜索条款。

如果你想使用LuceneSearch\QueryParser::parse()方法，你可以准备$userQueryString这样的：

$userQueryString = 'name:search input query string description:search input query string'; 

您也可以使用Zend\Search\Lucene\Search\Query\MultiTerm::addTerm()方法是这样的：

... 
$userQuery = new Zend\Search\Lucene\Search\Query\MultiTerm(); 
$userQuery->addTerm(new Zend\Search\Lucene\Index\Term($userQueryString, 'name')); 
$userQuery->addTerm(new Zend\Search\Lucene\Index\Term($userQueryString, 'description')); 
... 
$query->addSubquery($userQuery, true /* required */);