*/
    public XpathTransformer() {
        super();
    }

    private static final Logger logger = LogManager.getLogger(XpathTransformer.class);

    private static final Pattern SPACE_PATTERN = Pattern.compile("\\s+", Pattern.MULTILINE);

    /**
     * A map of field rules, where the key is the field name and the value is the XPath expression.
     */
    protected Map<String, String> fieldRuleMap = new LinkedHashMap<>();

```hl_lines="4"
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

Diese Zeile zeigt die URL, unter der Ihre Anwendung auf Ihrem lokalen Computer bereitgestellt wird.

### Testen Sie es

Öffnen Sie Ihren Browser unter <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000.</a>

Sie werden folgende JSON-Response sehen:

    public static final Pattern LUCENE_FIELD_RESERVED_PATTERN = Pattern.compile("([+\\-!\\(\\){}\\[\\]^\"~\\\\:\\p{Zs}]|(&&)|(\\|\\|))"); // "*", "?",

    /** Pattern for detecting reserved characters in Lucene range field queries. */
    public static final Pattern LUCENE_RANGE_FIELD_RESERVED_PATTERN = Pattern.compile("([!\\(\\){}\\[\\]\"~\\\\:\\p{Zs}]|(&&)|(\\|\\|))");

## Server Machine and Server Program { #server-machine-and-server-program }

There's a small detail about names to keep in mind. 💡

The word "**server**" is commonly used to refer to both the remote/cloud computer (the physical or virtual machine) and also the program that is running on that machine (e.g. Uvicorn).

Just keep in mind that when you read "server" in general, it could refer to one of those two things.

* Hinter jeder Anwendung, die Sie auf Ihrem Computer ausführen, steckt ein Prozess, jedes laufende Programm, jedes Fenster usw. Und normalerweise laufen viele Prozesse **gleichzeitig**, während ein Computer eingeschaltet ist.
* Es können **mehrere Prozesse** desselben **Programms** gleichzeitig ausgeführt werden.

        assertEquals("custom_field", queryContext.getDefaultField());

        queryContext.setDefaultField(null);
        assertNull(queryContext.getDefaultField());
    }

    // Test complex scenario with multiple operations
    public void test_complexScenario() {
        getMockRequest().setAttribute(Constants.FIELD_LOGS, new HashMap<String, List<String>>());

* Each application that you have running on your computer has some process behind it, each running program, each window, etc. And there are normally many processes running **at the same time** while a computer is on.
* There can be **multiple processes** of the **same program** running at the same time.

///

La documentation sera donc mise à jour automatiquement pour autoriser plusieurs valeurs :

<img src="/img/tutorial/query-params-str-validations/image02.png">

### Combiner liste de paramètres et valeurs par défaut

Et l'on peut aussi définir une liste de valeurs par défaut si aucune n'est fournie :

{* ../../docs_src/query_params_str_validations/tutorial012.py hl[9] *}

            assertTrue(e instanceof InvalidQueryException || e instanceof NullPointerException);
        }
    }

    public void test_execute_withComplexBooleanQuery() {
        // Test executing BoostQuery with a complex BooleanQuery containing multiple clauses
        BooleanQuery.Builder boolBuilder = new BooleanQuery.Builder();
        boolBuilder.add(new TermQuery(new Term("title", "fess")), BooleanClause.Occur.MUST);

   *
   * @throws NullPointerException if any of {@code elements} is null
   * @since 7.0 (source-compatible since 2.0)
   */
  // This the best we could do to get copyOfEnumSet to compile in the mainline.
  // The suppression also covers the cast to E[], discussed below.
  // In the backport, we don't have those cases and thus don't need this suppression.
  // We keep it to minimize diffs.