Package org.apache.struts.chain.contexts

Interface ActionContext

All Superinterfaces:
Context, Map<String,Object>
All Known Implementing Classes:
ActionContextBase, MockActionContext, ServletActionContext, WebActionContext
public interface ActionContext extends Context

An ActionContext represents a view of a commons-chain Context which encapsulates access to request and session-scoped resources and services

  • Field Details

  • Method Details

    • release

      void release()
      Signal to the instance that it will not be used any more, so that any resources which should be cleaned up can be cleaned up.

    • getApplicationScope

      Map<String,Object> getApplicationScope()

      Return a Map of Application scoped values.

      This is implemented in analogy with the Application scope in the Servlet API, but it seems reasonable to expect that any Struts implementation will have an equivalent concept.

      The ultimate meaning of "application scope" is an implementation detail left unspecified by Struts.

      Returns:
      A Map of "application scope" attributes.

    • getSessionScope

      Map<String,Object> getSessionScope()

      Return a Map of Session scoped values. A session is understood as a sequence of requests made by the same user.

      This is implemented in analogy with the Session scope in the Servlet API, but it seems reasonable to expect that any Struts implementation will have an equivalent concept.

      The ultimate meaning of "session scope" is an implementation detail left unspecified by Struts.

      Returns:
      A Map of "session scope" attributes.

    • getRequestScope

      Map<String,Object> getRequestScope()

      Return a Map of request scoped values. A request is understood as the fundamental motivation for any particular instance of an ActionContext.

      This is implemented in analogy with the Request Context in the Servlet API, but it seems reasonable to expect that any Struts implementation will have an equivalent concept.

      The ultimate meaning of "request scope" is an implementation detail left unspecified by Struts.

      Returns:
      a Map of "request scope" attributes.

    • getScope

      Map<String,Object> getScope(String scopeName)
      Return the Map representing the scope identified by scopeName. Implementations should support at minimum the names associated with the constants APPLICATION_SCOPE, SESSION_SCOPE, and REQUEST_SCOPE, but are permitted to support others as well.
      Parameters:
      scopeName - A token identifying a scope, including but not limited to APPLICATION_SCOPE, SESSION_SCOPE, REQUEST_SCOPE.
      Returns:
      A Map of attributes for the specified scope.

    • getParameterMap

      Map<String,String[]> getParameterMap()

      Return a Map of parameters submitted by the user as part of this request. The keys to this map will be request parameter names (of type String), and the values will be String[].

      This is implemented in analogy with the Request parameters of the Servlet API, but it seems reasonable to expect that any Struts implementation will have an equivalent concept.

      Returns:
      A map of the request parameter attributes

    • setAction

      void setAction(Action action)

      Set the action which has been identified to be executed as part of processing this request.

      Parameters:
      action -

    • getAction

      Action getAction()

      Get the action which has been identified to be executed as part of processing this request.

      Returns:
      The action to be executed with this request

    • setActionForm

      void setActionForm(ActionForm form)

      Set the ActionForm instance which will carry any data submitted as part of this request.

      Parameters:
      form - The ActionForm instance to use with this request

    • getActionForm

      ActionForm getActionForm()

      Get the ActionForm instance which will carry any data submitted as part of this request.

      Returns:
      The ActionForm being used with this request

    • setActionConfig

      void setActionConfig(ActionConfig config)

      Set the ActionConfig class contains the details for processing this request.

      Parameters:
      config - The ActionConfig class to use with this request

    • getActionConfig

      ActionConfig getActionConfig()

      Get the ActionConfig which contains the details for processing this request.

      Returns:
      The ActionConfig class being used with this request

    • setForwardConfig

      void setForwardConfig(ForwardConfig forward)

      Set the ForwardConfig which should be used as the basis of the view segment of the overall processing. This is the primary method of "communication" with the "view" sub-chain.

      Parameters:
      forward - The ForwardConfig to use with this request

    • getForwardConfig

      ForwardConfig getForwardConfig()

      Get the ForwardConfig which has been identified as the basis for view-processing.

      Returns:
      The ForwardConfig being used with this request

    • setInclude

      void setInclude(String include)

      Set the include path which should be processed as part of processing this request.

      Parameters:
      include - The include path to be used with this request

    • getInclude

      String getInclude()

      Get the include path which should be processed as part of processing this request.

      Returns:
      The include path being used with this request

    • setModuleConfig

      void setModuleConfig(ModuleConfig config)

      Set the ModuleConfig which is operative for the current request.

      Parameters:
      config - The ModuleConfig to be used with this request

    • getModuleConfig

      ModuleConfig getModuleConfig()

      Get the ModuleConfig which is operative for the current request.

      Returns:
      The MooduleConfig being used with this request

    • getFormValid

      Boolean getFormValid()

      Is the ActionForm for this context valid? This method does not actually perform form validation. It is simply a holder property where processes which perform validation can store the results of the validation for other processes' benefit.

      Returns:
      Boolean.TRUE if the form passed validation; Boolean.FALSE if the form failed validation; null if the form has not yet been validated

    • setFormValid

      void setFormValid(Boolean valid)

      Store the result of the validation of the Context's ActionForm.

      Parameters:
      valid - Whether the ActionForm for this request passes validation

    • getException

      Exception getException()

      Retrieve an exception which may have been caught by some code using this ActionContext, usually by an exception handler.

      Returns:
      Any exception that may have been caught by this ActionContext

    • setException

      void setException(Exception e)

      Store an exception in this context for use by other handling code.

      Parameters:
      e - An exception to be stored for handling by another member

    • addMessages

      void addMessages(ActionMessages messages)

      Append the given messages keys to an internal cache, creating the cache if one is not already present.

      Parameters:
      messages - New ActionMessages to cache

    • addErrors

      void addErrors(ActionMessages errors)

      Append the given errors keys to an internal cache, creating the cache if one is not already present.

      Parameters:
      errors - New ActionMessages to cache as errors

    • getErrors

      ActionMessages getErrors()

      Retrieve error messages from an internal cache, creating an empty cache if one is not already present.

      Returns:
      The ActionMessage cache for errors

    • getMessages

      ActionMessages getMessages()

      Retrieve messages from an internal cache, creating an empty cache if one is not already present.

      Returns:
      The ActionMessage cache for errors

    • saveErrors

      void saveErrors(ActionMessages errors)

      Save the given error messages to the internal cache, clearing any previous messages in the cache.

      If the parameter is null or empty, the internal cache is removed.

      Parameters:
      errors - ActionMesssages to cache as errors

    • saveMessages

      void saveMessages(ActionMessages messages)

      Save the given messages to the internal cache, clearing any previous messages in the cache.

      If the parameter is null or empty, the internal cache is removed.

      Parameters:
      messages - ActionMesssages to cache

    • saveMessages

      void saveMessages(String scope, ActionMessages messages)

      Save the given messages to the internal cache, clearing any previous messages in the cache, but only for the specified scope.

      If the parameter is null or empty, the internal cache is removed.

      Parameters:
      scope - The scope for the internal cache
      messages - ActionMesssages to cache

    • generateToken

      String generateToken()

      Generate a new transaction token, to be used for enforcing a single request for a particular transaction.

    • isTokenValid

      boolean isTokenValid()

      Indicate whether a transaction token for this context is valid.

      A typical implementation will place a transaction token in the session" scope Map and a matching value in the "parameter" Map. If the "session" token does not match the "parameter" attribute, or the session token is missing, then the transactional token is deemed invalid.

    • isTokenValid

      boolean isTokenValid(boolean reset)

      Indicate whether a transaction token is stored in the "session" scope for this context, optionally clearing the token, so that the next check would return false.

      Parameters:
      reset - On true, clear the transactional token

    • resetToken

      void resetToken()

      Clear any transactional token stored in the "session" scope for this context, so that the next check would return false.

    • saveToken

      void saveToken()

      Save a new transaction token in the "session" scope for this context, creating new resources, if needed.

    • getCancelled

      Boolean getCancelled()
      Indicate if the "cancel event" state is set for for this context,
      See Also:

    • setCancelled

      void setCancelled(Boolean cancelled)
      Set the "cancel event" state for this context.
      Parameters:
      cancelled - On true, set the cancel event state to true. On false, set the cancel event state to false.
      See Also:

    • getMessageResources

      MessageResources getMessageResources()

      Return the default message resources for the current module.

    • setMessageResources

      void setMessageResources(MessageResources resources)

      Set the default message resources for the current module.

    • getMessageResources

      MessageResources getMessageResources(String key)

      Return the specified message resources for the current module.

      Parameters:
      key - The key specified in the <message-resources> element for the requested bundle

    • getLocale

      Locale getLocale()

      Return the user's currently selected Locale.

    • setLocale

      void setLocale(Locale locale)

      Set the user's currently selected Locale.

      Parameters:
      locale - The user's selected Locale to be set, or null to select the server's default Locale