Question

我已将MySQL列索引到elasticsearch中，此列包含一些AR / EN / RO语言值。如何使用unicode字符串在这些索引中搜索？

$hosts = ['localhost:9200'];              
$client = \Elasticsearch\ClientBuilder::create()->setHosts($hosts)->build();  

$body = '{  "query": {
"filtered": {
  "query": {
    "match_all": {}
  },
  "filter": {
    "bool": {
      "must": [
        {"query": {"wildcard": {"text": {"value": "*'.$term.'*"}}}},
        {"query": {"wildcard": {"group": {"value": "hotels_cities"}}}}
      ]
    }
  }
}  }}';



$params['index'] = 'my_custom_index_name';
$params['type']  = 'translator_translations';
$params['body'] = $body;

$results = $client->search($params);

输出点击数为零。

- 有一种叫做分析器的东西，但没有关于如何在PHP中使用它的信息。

Answer 1

我想我找到了如何在Elasticsearch中索引unicode语言字符的答案，希望这对任何人都有用。

首先，您必须设置索引名称

第二个使用过滤器和语言分析器设置新语言设置，如下所示：

$client = ClientBuilder::create()       // Instantiate a new ClientBuilder
            ->setHosts(['localhost:9200'])      // Set the hosts
            ->build();

$lang = 'el'; // Greek in my case

$param['index'] = 'test_' . $lang; // index name

// uncomment this line if you want to delete an existing index
// $response = $client->indices()->delete($param);

$body = '{
  "settings": {
    "analysis": {
      "filter": {
        "greek_stop": {
          "type":       "stop",
          "stopwords":  "_greek_" 
        },
        "greek_lowercase": {
          "type":       "lowercase",
          "language":   "greek"
        },
        "greek_keywords": {
          "type":       "keyword_marker",
          "keywords":   ["παράδειγμα"] 
        },
        "greek_stemmer": {
          "type":       "stemmer",
          "language":   "greek"
        }
      },
      "analyzer": {
        "greek": {
          "tokenizer":  "standard",
          "filter": [
            "greek_lowercase",
            "greek_stop",
            "greek_keywords",
            "greek_stemmer"
          ]
        }
      }
    }
  }
}';

$param['body'] = $body; // store the JSON body as a parameter in the main array

$response = $client->indices()->create($param);

然后开始使用希腊字符索引您的值

Answer 2

您应该使用fieldname.keyword

$rowArray = array();
$rowArray['term'] = array();
$rowArray['term']['title.keyword'] = (string)$csvRow[1];
$whereArray['bool']['must'][] = $rowArray;

如何在elasticsearch中使用Unicode字符进行搜索？

2 个答案: