* *路径*可以包含 [OpenAPI 3 表达式](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md#key-expression)（详见下文），可以使用带参数的变量，以及发送至您的 API 的原始请求的部分

### 回调路径表达式 { #the-callback-path-expression }

回调*路径*支持包含发送给您的 API 的原始请求的部分的 [OpenAPI 3 表达式](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md#key-expression)。

本例中是 `str`：

```Python
"{$callback_url}/invoices/{$request.body.id}"
```

constraints.NotEmpty.message = {item} is required.
constraints.ParametersScriptAssert.message = The script expression "{script}" is not true.
constraints.Range.message = {item} must be between {min} and {max}.
constraints.SafeHtml.message = {item} contains unsafe HTML content.
constraints.ScriptAssert.message = The script expression "{script}" is not true.
constraints.URL.message = {item} is not a valid URL.

constraints.NotEmpty.message = {item} is required.
constraints.ParametersScriptAssert.message = The script expression "{script}" is not true.
constraints.Range.message = {item} must be between {min} and {max}.
constraints.SafeHtml.message = {item} contains unsafe HTML content.
constraints.ScriptAssert.message = The script expression "{script}" is not true.
constraints.URL.message = {item} is not a valid URL.

    @Override
    public boolean isValid(final String value, final ConstraintValidatorContext context) {
        return determineValid(value);
    }

    /**
     * Determines if the given value is a valid cron expression.
     * @param value the value to validate
     * @return true if valid, false otherwise
     */
    protected boolean determineValid(final String value) {

            - 6.8
          excluded-regions:
            - ^docs/.*
          black-list-labels:
            - '>test-mute'
            - ':Delivery/Packaging'
    axes:
      - axis:
          type: label-expression
          name: os
          values:
            - "windows-2019"
      - axis:
          type: user-defined
          name: PACKAGING_TASK
          values:
            - 'default-windows-archive'

import java.io.File;
import java.io.FilenameFilter;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

/**
 * File name filter that only accepts files matching a regular expression. This class is thread-safe
 * and immutable.
 *
 * @author Apple Chow
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class PatternFilenameFilter implements FilenameFilter {

            - ^docs/.*
          white-list-labels:
            - ':Delivery/Packaging'
          black-list-labels:
            - '>test-mute'
    axes:
      - axis:
          type: label-expression
          name: os
          values:
            - "windows-2012-r2"
            - "windows-2016"
            - "windows-2019"
      - axis:
          type: user-defined
          name: PACKAGING_TASK

        SimpleProblemCollector result = validateRaw("raw-model/repository-with-expression.xml");
        assertViolations(result, 0, 0, 0);
    }

    @Test
    void repositoryWithBasedirExpression() throws Exception {
        SimpleProblemCollector result = validateRaw("raw-model/repository-with-basedir-expression.xml");
        assertViolations(result, 0, 0, 0);
    }

    @Test

    # - - - - - - - - - -/

    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o dbfluteBeansPackageName (NotRequired - Default null)
    #  The default attribute expression of DBFlute DI configuration for Spring and Lucy.
    #
    # @SpringOnly
    #; dbfluteBeansDefaultAttribute = default-lazy-init="true"
    # - - - - - - - - - -/

  @get:JvmName("size")
  val size: Int
    get() = encodedNames.size

  @JvmName("-deprecated_size")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "size"),
    level = DeprecationLevel.ERROR,
  )
  fun size(): Int = size

  fun encodedName(index: Int): String = encodedNames[index]