org.apache.tiles.request

## Interface Request

- All Known Subinterfaces:
    DispatchRequest, RequestWrapper
  All Known Implementing Classes:
    AbstractClientRequest, AbstractRequest, AbstractViewRequest, DispatchRequestWrapper, FreemarkerRequest, JspRequest, ServletRequest, VelocityRequest

      public interface Request

  Encapsulation of request information.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `APPLICATION_SCOPE` the name of the (mandatory) "application" scope
    `static String` | `REQUEST_SCOPE` the name of the "request" context

  - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `ApplicationContext` | `getApplicationContext()` Returns the associated application context.
    `List<String>` | `getAvailableScopes()` Returns all available scopes.
    `Map<String,Object>` | `getContext(String scope)` Returns a context map, given the scope name.
    `Map<String,String>` | `getHeader()` Return an immutable Map that maps header names to the first (or only) header value (as a String).
    `Map<String,String[]>` | `getHeaderValues()` Return an immutable Map that maps header names to the set of all values specified in the request (as a String array).
    `OutputStream` | `getOutputStream()` Returns an output stream to be used to write directly in the response.
    `Map<String,String>` | `getParam()` Return an immutable Map that maps request parameter names to the first (or only) value (as a String).
    `Map<String,String[]>` | `getParamValues()` Return an immutable Map that maps request parameter names to the set of all values (as a String array).
    `PrintWriter` | `getPrintWriter()` Returns a print writer to be used to write directly in the response.
    `Locale` | `getRequestLocale()` Return the preferred Locale in which the client will accept content.
    `Addable<String>` | `getResponseHeaders()` Return an Addable object that can be used to write headers to the response.
    `Writer` | `getWriter()` Returns a writer to be used to write directly in the response.
    `boolean` | `isResponseCommitted()` Checks if the response has been committed.
    `boolean` | `isUserInRole(String role)` Determine whether the specified user is in the given role.

- - ### Field Detail

    - #### APPLICATION_SCOPE

          static final String APPLICATION_SCOPE

      the name of the (mandatory) "application" scope
      See Also:
        Constant Field Values

    - #### REQUEST_SCOPE

          static final String REQUEST_SCOPE

      the name of the "request" context
      See Also:
        Constant Field Values

  - ### Method Detail

    - #### getHeader

          Map<String,String> getHeader()

      Return an immutable Map that maps header names to the first (or only) header value (as a String).
      Returns:
        The header map.

    - #### getHeaderValues

          Map<String,String[]> getHeaderValues()

      Return an immutable Map that maps header names to the set of all values specified in the request (as a String array). Header names must be matched in a case-insensitive manner.
      Returns:
        The header values map.

    - #### getResponseHeaders

          Addable<String> getResponseHeaders()

      Return an Addable object that can be used to write headers to the response.
      Returns:
        An Addable object.

    - #### getContext

          Map<String,Object> getContext(String scope)

      Returns a context map, given the scope name. This method always return a map for all the scope names returned by getAvailableScopes(). That map may be writable, or immutable, depending on the implementation.
      Parameters:
        `scope` - The name of the scope.
      Returns:
        The context.

    - #### getAvailableScopes

          List<String> getAvailableScopes()

      Returns all available scopes. The scopes are ordered according to their lifetime, the innermost, shorter lived scope appears first, and the outermost, longer lived scope appears last. Besides, the scopes "request" and "application" always included in the list.
      Returns:
        All the available scopes.

    - #### getApplicationContext

          ApplicationContext getApplicationContext()

      Returns the associated application context.
      Returns:
        The application context associated to this request.

    - #### getOutputStream

          OutputStream getOutputStream()
                                throws IOException

      Returns an output stream to be used to write directly in the response.
      Returns:
        The output stream that writes in the response.
      Throws:
        `IOException` - If something goes wrong when getting the output stream.

    - #### getWriter

          Writer getWriter()
                    throws IOException

      Returns a writer to be used to write directly in the response.
      Returns:
        The writer that writes in the response.
      Throws:
        `IOException` - If something goes wrong when getting the writer.

    - #### getPrintWriter

          PrintWriter getPrintWriter()
                              throws IOException

      Returns a print writer to be used to write directly in the response.
      Returns:
        The print writer that writes in the response.
      Throws:
        `IOException` - If something goes wrong when getting the print writer.

    - #### isResponseCommitted

          boolean isResponseCommitted()

      Checks if the response has been committed.
      Returns:
        `true` only if the response has been committed.

    - #### getParam

          Map<String,String> getParam()

      Return an immutable Map that maps request parameter names to the first (or only) value (as a String).
      Returns:
        The parameter map.

    - #### getParamValues

          Map<String,String[]> getParamValues()

      Return an immutable Map that maps request parameter names to the set of all values (as a String array).
      Returns:
        The parameter values map.

    - #### getRequestLocale

          Locale getRequestLocale()

      Return the preferred Locale in which the client will accept content.
      Returns:
        The current request locale. It is the locale of the request object itself, and it is NOT the locale that the user wants to use. See `LocaleResolver` to implement strategies to resolve locales.

    - #### isUserInRole

          boolean isUserInRole(String role)

      Determine whether the specified user is in the given role.
      Parameters:
        `role` - the role to check against.
      Returns:
        `true` if the user is in the given role.

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