* override one or more methods to modify the behavior of the backing set as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingNavigableSet} forward <i>indiscriminately</i>
 * to the methods of the delegate. For example, overriding {@link #add} alone <i>will not</i> change

		if e.ConditionRHS.In.ListExpr != nil {
			return e.ConditionRHS.In.ListExpr.aggregateRow(r, tableAlias)
		}
		return nil
	case e.ConditionRHS.Like != nil:
		err = e.ConditionRHS.Like.Pattern.aggregateRow(r, tableAlias)
		if err != nil {
			return err
		}
		return e.ConditionRHS.Like.EscapeChar.aggregateRow(r, tableAlias)
	default:
		return errInvalidASTNode
	}
}

            }
            throw new UnsupportedOperationException();
        }

        @Override
        public Set<String> getMatchingFieldNames(String pattern) {
            throw new UnsupportedOperationException();
        }

        @Override
        public boolean isFieldMapped(String field) {
            return field.startsWith("int");
        }

{* ../../docs_src/query_params_str_validations/tutorial003_an_py310.py hl[10] *}

## 加入正規表示式 { #add-regular-expressions }

你可以定義參數必須符合的 <dfn title="正規表示式（regex、regexp）是一組用於定義字串搜尋樣式的字元序列。">regular expression</dfn> `pattern`：

{* ../../docs_src/query_params_str_validations/tutorial004_an_py310.py hl[11] *}

這個特定的正規表示式樣式會檢查收到的參數值是否：

- `^`：以後續的字元開頭，前面不能有其他字元。
- `fixedquery`：必須正好等於 `fixedquery`。

`min_length` parametresini de ekleyebilirsiniz:

{* ../../docs_src/query_params_str_validations/tutorial003_an_py310.py hl[10] *}

## Regular expression ekleyin { #add-regular-expressions }

Parametrenin eşleşmesi gereken bir `pattern` <dfn title="String'ler için arama deseni tanımlayan karakter dizisi">düzenli ifade</dfn> tanımlayabilirsiniz:

{* ../../docs_src/query_params_str_validations/tutorial004_an_py310.py hl[11] *}

small: [],\n  span: [],\n  sub: [],\n  sup: [],\n  strong: [],\n  u: [],\n  ul: []\n}\n\n/**\n * A pattern that recognizes a commonly useful subset of URLs that are safe.\n *\n * Shoutout to Angular https://github.com/angular/angular/blob/12.2.x/packages/core/src/sanitization/url_sanitizer.ts\n */\nconst SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp|tel|file|sms):|[^#&/:?]*(?:[#/?]|$))/i\n\n/**\n * A pattern that matches safe data URLs. Only matches image, video and audio types.\n *\n * Shoutout to Angular...

Plusieurs d'entre eux sont explorés dans les prochains chapitres du tutoriel.

## L'ordre importe { #order-matters }

Quand vous créez des *chemins d'accès*, vous pouvez vous retrouver dans une situation avec un chemin fixe.

Par exemple `/users/me`, disons pour récupérer les données de l'utilisateur actuel.

 * should override one or more methods to modify the behavior of the backing multiset as desired per
 * the <a href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingSortedMultiset} forward
 * <b>indiscriminately</b> to the methods of the delegate. For example, overriding {@link

            assertEquals(SERVER_REALM, ticket.getServerRealm());
            assertEquals(SERVER_PRINCIPAL_NAME, ticket.getServerPrincipalName());
            assertNotNull(ticket.getEncData());

            // Also test getters that delegate to KerberosEncData
            assertEquals(USER_PRINCIPAL_NAME, ticket.getUserPrincipalName());
            assertEquals(USER_REALM, ticket.getUserRealm());
        }
    }

     */
    public BaseThumbnailGenerator() {
        // Default constructor
    }

    /**
     * Adds a condition for thumbnail generation.
     * @param key The condition key.
     * @param regex The regex pattern for the condition.
     */
    public void addCondition(final String key, final String regex) {
        final String value = conditionMap.get(key);
        if (StringUtil.isBlank(value)) {