| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <title>CommandContext :: Apache Isis</title> |
| <link rel="canonical" href="https://isis.apache.org/refguide/2.0.0-M3/applib-svc/CommandContext.html"> |
| <meta name="generator" content="Antora 2.2.0"> |
| <link rel="stylesheet" href="../../../_/css/site.css"> |
| <link rel="stylesheet" href="../../../_/css/site-custom.css"> |
| <link href="https://fonts.googleapis.com/css?family=Open+Sans:300,300i,400,400i,700,700i|Raleway:300,400,500,700,800|Montserrat:300,400,700" rel="stylesheet"> |
| <link rel="home" href="https://isis.apache.org" title="Apache Isis"> |
| <link rel="next" href="CommandDtoProcessorService.html" title="CommandDtoProcessorService"> |
| <link rel="prev" href="ClockService.html" title="ClockService"> |
| </head> |
| <body class="article"> |
| <header class="header"> |
| <nav class="navbar"> |
| <div class="navbar-brand"> |
| <a class="navbar-item" href="https://isis.apache.org"> |
| <span class="icon"> |
| <img src="../../../_/img/isis-logo-48x48.png"></img> |
| </span> |
| <span>Apache Isis</span> |
| </a> |
| <button class="navbar-burger" data-target="topbar-nav"> |
| <span></span> |
| <span></span> |
| <span></span> |
| </button> |
| </div> |
| <div id="topbar-nav" class="navbar-menu"> |
| <a class="navbar-end"> |
| <div class="navbar-item has-dropdown is-hoverable"> |
| <a class="navbar-link" href="#">Quick Start</a> |
| <div class="navbar-dropdown"> |
| <span class="navbar-item navbar-heading">Starter Apps</span> |
| <a class="navbar-item" href="../../../docs/latest/starters/helloworld.html">Hello World</a> |
| <a class="navbar-item" href="../../../docs/latest/starters/simpleapp.html">Simple App</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Demos & Tutorials</span> |
| <a class="navbar-item" href="../../../docs/latest/demo/about.html">Demo App</a> |
| <a class="navbar-item" href="https://danhaywood.gitlab.io/isis-petclinic-tutorial-docs/petclinic/1.16.2/intro.html">Petclinic (tutorial)</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Resources</span> |
| <a class="navbar-item" href="../../../docs/latest/resources/cheatsheet.html">Cheatsheet</a> |
| <a class="navbar-item" href="../../../docs/latest/resources/icons.html">Icons</a> |
| </div> |
| </div> |
| <div class="navbar-item has-dropdown is-hoverable"> |
| <a class="navbar-link" href="#">Guides</a> |
| <div class="navbar-dropdown"> |
| <span class="navbar-item navbar-heading">Development</span> |
| <a class="navbar-item" href="../../../setupguide/latest/about.html">Setup Guide</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Core</span> |
| <a class="navbar-item" href="../../../userguide/latest/about.html">User Guide</a> |
| <a class="navbar-item" href="../../../refguide/latest/about.html">Reference Guide</a> |
| <a class="navbar-item" href="../../../testing/latest/about.html">Testing Guide</a> |
| </div> |
| </div> |
| <div class="navbar-item has-dropdown is-hoverable"> |
| <a class="navbar-link" href="#">Libraries</a> |
| <div class="navbar-dropdown"> |
| <span class="navbar-item navbar-heading">For Use in Apps</span> |
| <a class="navbar-item" href="../../../subdomains/latest/about.html">Subdomain Libraries</a> |
| <a class="navbar-item" href="../../../valuetypes/latest/about.html">Value Types</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Integrate between Apps</span> |
| <a class="navbar-item" href="../../../mappings/latest/about.html">Bounded Context Mapping Libraries</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Other</span> |
| <a class="navbar-item" href="../../../incubator/latest/about.html">Incubator</a> |
| <a class="navbar-item" href="../../../legacy/latest/about.html">Legacy</a> |
| </div> |
| </div> |
| <div class="navbar-item has-dropdown is-hoverable"> |
| <a class="navbar-link" href="#">Components</a> |
| <div class="navbar-dropdown"> |
| <span class="navbar-item navbar-heading">Viewers</span> |
| <a class="navbar-item" href="../../../vw/latest/about.html">Wicket UI</a> |
| <a class="navbar-item" href="../../../vro/latest/about.html">Restful Objects (REST)</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Security</span> |
| <a class="navbar-item" href="../../../security/latest/about.html">Security Guide</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Persistence</span> |
| <a class="navbar-item" href="../../../pjdo/latest/about.html">DataNucleus (JDO)</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Extensions</span> |
| <a class="navbar-item" href="../../../extensions/latest/about.html">Extensions Catalog</a> |
| </div> |
| </div> |
| <div class="navbar-item has-dropdown is-hoverable"> |
| <a class="navbar-link" href="#">Support</a> |
| <div class="navbar-dropdown"> |
| <span class="navbar-item navbar-heading">Contact</span> |
| <a class="navbar-item" href="../../../docs/latest/support/slack-channel.html">Slack</a> |
| <a class="navbar-item" href="../../../docs/latest/support/mailing-list.html">Mailing Lists</a> |
| <a class="navbar-item" href="https://issues.apache.org/jira/browse/ISIS">JIRA</a> |
| <a class="navbar-item" href="https://stackoverflow.com/questions/tagged/isis">Stack Overflow</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Releases</span> |
| <a class="navbar-item" href="../../../docs/latest/downloads/how-to.html">Downloads</a> |
| <a class="navbar-item" href="../../../relnotes/latest/about.html">Release Notes</a> |
| <a class="navbar-item" href="../../../docs/latest/archive/1-x.html">Archive (1.x)</a> |
| <hr class="navbar-divider"/> |
| <span class="navbar-item navbar-heading">Framework</span> |
| <a class="navbar-item" href="../../../conguide/latest/about.html">Contributors' Guide</a> |
| <a class="navbar-item" href="../../../comguide/latest/about.html">Committers' Guide</a> |
| <a class="navbar-item" href="../../../core/latest/about.html">Core Design</a> |
| </div> |
| </div> |
| <div class="navbar-item has-dropdown is-hoverable"> |
| <a class="navbar-link" href="#">ASF</a> |
| <div class="navbar-dropdown"> |
| <a class="navbar-item" href="http://www.apache.org/">Apache Homepage</a> |
| <a class="navbar-item" href="https://www.apache.org/events/current-event">Events</a> |
| <a class="navbar-item" href="https://www.apache.org/licenses/">Licenses</a> |
| <a class="navbar-item" href="https://www.apache.org/security/">Security</a> |
| <a class="navbar-item" href="https://www.apache.org/foundation/sponsorship.html">Sponsorship</a> |
| <a class="navbar-item" href="https://www.apache.org/foundation/thanks.html">Thanks</a> |
| <hr class="navbar-divider"/> |
| <a class="navbar-item" href="https://whimsy.apache.org/board/minutes/Isis.html">PMC board minutes</a> |
| </div> |
| </div> |
| <a class="navbar-item" href="../../../docs/latest/about.html"> |
| <span class="icon"> |
| <img src="../../../_/img/home.png"></img> |
| </span> |
| </a> |
| </div> |
| </div> |
| </nav> |
| </header> |
| <div class="body "> |
| <div class="nav-container" data-component="refguide" data-version="2.0.0-M3"> |
| <aside class="nav"> |
| <div class="panels"> |
| <div class="nav-panel-pagination"> |
| <a class="page-previous" rel="prev" href="ClockService.html" title="ClockService"><span></span></a> |
| <a class="page-next" rel="next" |
| href="CommandDtoProcessorService.html" title="CommandDtoProcessorService"><span></span></a> |
| <!-- |
| page.parent doesn't seem to be set... |
| <a class="page-parent" rel="prev" href="about.html" title="ClockService"><span></span></a> |
| --> |
| </div> |
| <div class="nav-panel-menu is-active" data-panel="menu"> |
| <nav class="nav-menu"> |
| <h3 class="title"><a href="../about.html">Reference Guide</a></h3> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="0"> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../applib-ant/about.html">Annotations</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Action.html">Action</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/ActionLayout.html">ActionLayout</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Collection.html">Collection</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/CollectionLayout.html">CollectionLayout</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Column.html">Column</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Digits.html">Digits</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Discriminator.html">Discriminator</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/DomainObject.html">DomainObject</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/DomainObjectLayout.html">DomainObjectLayout</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/DomainService.html">DomainService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/DomainServiceLayout.html">DomainServiceLayout</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Facets.html">Facets</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/HomePage.html">HomePage</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/MemberOrder.html">MemberOrder</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Mixin.html">Mixin</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/NotPersistent.html">NotPersistent.</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Nullable.html">Nullable</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/MinLength.html">MinLength</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Parameter.html">Parameter</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/ParameterLayout.html">ParameterLayout</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Pattern.html">Pattern</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/PersistenceCapable.html">PersistenceCapable</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/PrimaryKey.html">PrimaryKey</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Programmatic.html">Programmatic</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Property.html">Property</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/PropertyLayout.html">PropertyLayout</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/IsisSessionScope.html">RequestScoped</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/Title.html">Title</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/ViewModel.html">ViewModel</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/XmlJavaTypeAdapter.html">XmlJavaTypeAdapter</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-ant/XmlRootElement.html">XmlRootElement</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../applib-methods/about.html">Methods</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-methods/prefixes.html">Supporting Method Prefixes</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-methods/reserved.html">Reserved Methods</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-methods/lifecycle.html">Lifecycle Methods</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../applib-classes/about.html">Classes</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-classes/events.html">Events</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-classes/ViewModel.html"><code>ViewModel</code></a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-classes/value-types.html">Value Types</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-classes/spec.html">Specification pattern</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-classes/i18n.html">i18n support</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-classes/roles-mixins-contributees.html">Roles, Mixins and Contributees</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-classes/utility.html">Utility Classes</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../applib-classes/layout.html">Layout</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="about.html">Domain Services</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="AcceptHeaderService.html">AcceptHeaderService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ApplicationFeatureRepository.html">ApplicationFeatureRepository</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="AuditerService.html">AuditerService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="BookmarkService.html">BookmarkService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="BookmarkUiService.html">BookmarkUiService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ClockService.html">ClockService</a> |
| </li> |
| <li class="nav-item is-current-page" data-depth="2"> |
| <a class="nav-link" href="CommandContext.html">CommandContext</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="CommandDtoProcessorService.html">CommandDtoProcessorService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="CommandExecutorService.html">CommandExecutorService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="CommandService.html">CommandService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ConfigurationMenu.html">ConfigurationMenu</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ConfigurationViewService.html">ConfigurationViewService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ContentMappingService.html">ContentMappingService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="DeepLinkService.html">DeepLinkService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="EmailNotificationService.html">EmailNotificationService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="EmailService.html">EmailService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ErrorReportingService.html">ErrorReportingService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="EventBusService.html">EventBusService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ExceptionRecognizerService.html">ExceptionRecognizerService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="FactoryService.html">FactoryService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="GridLoaderService.html">GridLoaderService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="GridService.html">GridService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="GridSystemService.html">GridSystemService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="HealthCheckService.html">HealthCheckService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="HintStore.html">HintStore</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="HomePageResolverService.html">HomePageResolverService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="InteractionContext.html">InteractionContext</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="JaxbService.html">JaxbService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="LayoutService.html">LayoutService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="LayoutServiceMenu.html">LayoutServiceMenu</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="LocaleProvider.html">LocaleProvider</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="MenuBarsLoaderService.html">MenuBarsLoaderService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="MenuBarsService.html">MenuBarsService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="MessageService.html">MessageService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="MetaModelService.html">MetamodelService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="MetaModelServiceMenu.html">MetamodelServiceMenu</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="MetricsService.html">MetricsService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="PublisherService.html">PublisherService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="QueryResultsCache.html">QueryResultsCache</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="RepositoryService.html">RepositoryService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="RoutingService.html">RoutingService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="Scratchpad.html">Scratchpad</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ServiceInjector.html">ServiceInjector</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="ServiceRegistry.html">ServiceRegistry</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="SessionLoggingService.html">SessionLoggingService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="SudoService.html">SudoService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="SwaggerService.html">SwaggerService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="TableColumnOrderService.html">TableColumnOrderService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="TitleService.html">TitleService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="TranslationService.html">TranslationService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="TranslationsResolver.html">TranslationsResolver</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="TransactionService.html">TransactionService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="UrlEncodingService.html">UrlEncodingService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="UserProfileService.html">UserProfileService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="UserRegistrationService.html">UserRegistrationService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="UserService.html">UserService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="WrapperFactory.html">WrapperFactory</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="XmlService.html">XmlService</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="XmlSnapshotService.html">XmlSnapshotService</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../config/about.html">Configuration</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.applib.html">Applib</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.core.meta-model.html">Core MetaModel</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.core.meta-model.introspector.html">Core MetaModel Introspection</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.core.meta-model.validator.html">MetaModel Validator</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.core.runtime.html">Core Runtime Services configurations</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.core.runtime-services.html">Core Runtime Services configurations</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.security.shiro.html">Shiro Security Implementation</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.persistence.jdo-datanucleus.html">JDO DataNucleus</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.persistence.jdo-datanucleus.impl.html">DataNucleus Configuration</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.viewer.restfulobjects.html">Restful Objects Viewer</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.viewer.wicket.html">Wicket Viewer</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.extensions.html">Extensions</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.value-types.html">Value types</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.testing.html">Testing</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/isis.legacy.html">Legacy</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/resteasy.html">RestEasy Configuration</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../config/sections/Other.html">Other</a> |
| </li> |
| </ul> |
| </li> |
| <li class="nav-item" data-depth="1"> |
| <button class="nav-item-toggle"></button> |
| <a class="nav-link" href="../schema/about.html">Schema</a> |
| <ul class="nav-list"> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../schema/mml.html">MetaModel</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../schema/cmd.html">Command</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../schema/ixn.html">Interaction</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../schema/chg.html">Changes</a> |
| </li> |
| <li class="nav-item" data-depth="2"> |
| <a class="nav-link" href="../schema/common.html">Common</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </nav> |
| </div> |
| <div class="nav-panel-explore" data-panel="explore"> |
| <div class="context"> |
| <span class="title">Reference Guide</span> |
| <span class="version">2.0.0-M3</span> |
| </div> |
| <ul class="components"> |
| <li class="component"> |
| <span class="title"> </span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../docs/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">BC Mappings Catalog</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../mappings/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Committers' Guide</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../comguide/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Contributors' Guide</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../conguide/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Design Docs</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../core/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Extensions Catalog</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../extensions/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Incubator Catalog</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../incubator/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">JDO/DataNucleus</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../pjdo/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Legacy Catalog</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../legacy/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component is-current"> |
| <span class="title">Reference Guide</span> |
| <ul class="versions"> |
| <li class="version is-current is-latest"> |
| <a href="../about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Release Notes</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../relnotes/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Restful Objects Viewer</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../vro/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Security Guide</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../security/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Setup Guide</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../setupguide/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Subdomains Catalog</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../subdomains/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Testing Guide</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../testing/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">User Guide</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../userguide/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Value Types Catalog</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../valuetypes/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| <li class="component"> |
| <span class="title">Wicket Viewer</span> |
| <ul class="versions"> |
| <li class="version is-latest"> |
| <a href="../../../vw/2.0.0-M3/about.html">2.0.0-M3</a> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </aside> |
| </div> |
| <main role="main"> |
| <div class="toolbar" role="navigation"> |
| <button class="nav-toggle"></button> |
| <a href="../../../docs/2.0.0-M3/about.html" class="home-link"></a> |
| <nav class="breadcrumbs" aria-label="breadcrumbs"> |
| <ul> |
| <li><a href="../about.html">Reference Guide</a></li> |
| <li><a href="about.html">Domain Services</a></li> |
| <li><a href="CommandContext.html">CommandContext</a></li> |
| </ul> |
| </nav> |
| <div class="edit-this-page"><a href="https://github.com/apache/isis/edit/2.0.0-M3/api/applib/src/main/adoc/modules/applib-svc/pages/CommandContext.adoc">Edit</a></div> |
| </div> |
| <article class="doc"> |
| <a name="section-top"></a> |
| <h1 class="page"><code>CommandContext</code></h1> |
| <div id="preamble"> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>The <code>CommandContext</code> service is a <a href="../applib-ant/IsisSessionScope.html" class="page">request-scoped</a> service that reifies the invocation of an action on a domain object into an object itself. |
| This reified information is encapsulated within the <a href="#command"><code>Command</code></a> object.</p> |
| </div> |
| <div class="paragraph"> |
| <p>By default, the command is held in-memory only; once the action invocation has completed, the command object is gone. |
| The optional supporting <a href="CommandService.html" class="page"><code>CommandService</code></a> enables the implementation of <a href="#command"><code>Command</code></a> to be pluggable. |
| With an appropriate implementation |
| the <a href="#command"><code>Command</code></a> instance may then be persisted.</p> |
| </div> |
| <div class="paragraph"> |
| <p>There are two main use cases:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>to allow invocation of <code>Command</code>s to be deferred, for example to be invoked in the background</p> |
| </li> |
| <li> |
| <p>to allow <code>Command</code>s to be replicated and replayed to another system (usually for testing or dual-running/migration purposes).</p> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p>This is normally done using the <code>CommandWithDto</code> subtype, that can return a representation of the <code>Command</code> as an XML instance of the <a href="../schema/cmd.html" class="page"><code>cmd.xsd</code></a> schema, which also captures a unique transactionId (GUID) for the command.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="api"><a class="anchor" href="#api"></a>API</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>The <code>CommandContext</code> request-scoped service defines the following very simple API:</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">@Service |
| @Named("isisApplib.CommandContext") |
| @Order(OrderPrecedence.MIDPOINT) |
| @Primary |
| @Qualifier("Default") |
| @IsisSessionScope |
| @Log4j2 |
| public class CommandContext { |
| |
| @Getter |
| private Command command; |
| |
| }</code></pre> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="command"><a class="anchor" href="#command"></a><code>Command</code></h3> |
| <div class="paragraph"> |
| <p>The <code>Command</code> type in turn is defined as:</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">public interface Command extends HasUniqueId { |
| |
| String getUser(); <i class="conum" data-value="1"></i><b>(1)</b> |
| Timestamp getTimestamp(); <i class="conum" data-value="2"></i><b>(2)</b> |
| Bookmark getTarget(); <i class="conum" data-value="3"></i><b>(3)</b> |
| String getMemberIdentifier(); <i class="conum" data-value="4"></i><b>(4)</b> |
| String getTargetClass(); <i class="conum" data-value="5"></i><b>(5)</b> |
| String getTargetAction(); <i class="conum" data-value="6"></i><b>(6)</b> |
| String getArguments(); <i class="conum" data-value="7"></i><b>(7)</b> |
| String getMemento(); <i class="conum" data-value="8"></i><b>(8)</b> |
| CommandExecuteIn getExecuteIn(); <i class="conum" data-value="9"></i><b>(9)</b> |
| Executor getExecutor(); <i class="conum" data-value="10"></i><b>(10)</b> |
| Timestamp getStartedAt(); <i class="conum" data-value="11"></i><b>(11)</b> |
| Timestamp getCompletedAt(); <i class="conum" data-value="12"></i><b>(12)</b> |
| Command getParent(); <i class="conum" data-value="13"></i><b>(13)</b> |
| String getException(); <i class="conum" data-value="14"></i><b>(14)</b> |
| Bookmark getResult(); <i class="conum" data-value="15"></i><b>(15)</b> |
| CommandPersistence getPersistence(); <i class="conum" data-value="16"></i><b>(16)</b> |
| boolean isPersistHint(); <i class="conum" data-value="17"></i><b>(17)</b> |
| }</code></pre> |
| </div> |
| </div> |
| <div class="colist arabic"> |
| <table> |
| <tr> |
| <td><i class="conum" data-value="1"></i><b>1</b></td> |
| <td>user that initiated the action.</td> |
| </tr> |
| <tr> |
| <td><i class="conum" data-value="2"></i><b>2</b></td> |
| <td>date/time at which this action was created.</td> |
| </tr> |
| <tr> |
| <td><i class="conum" data-value="3"></i><b>3</b></td> |
| <td>bookmark of the target object (entity or service) on which this action was performed <.> holds a string representation of the invoked action <.> human-friendly description of the class of the target object <.> human-friendly name of the action invoked on the target object <.> human-friendly description of the arguments with which the action was invoked <.> formal (XML or similar) specification of the action to invoke/being invoked <.> whether this command is executed in the foreground or background |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">public enum CommandExecuteIn { |
| FOREGROUND, |
| BACKGROUND, |
| REPLAYABLE, |
| EXCLUDED |
| }</code></pre> |
| </div> |
| </div></td> |
| </tr> |
| <tr> |
| <td><i class="conum" data-value="4"></i><b>4</b></td> |
| <td>the (current) executor of this command: |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">enum Executor { |
| USER, |
| BACKGROUND, |
| OTHER |
| }</code></pre> |
| </div> |
| </div></td> |
| </tr> |
| <tr> |
| <td><i class="conum" data-value="5"></i><b>5</b></td> |
| <td>date/time at which this action started (same as <code>timestamp</code> property for foreground commands) <.> date/time at which this action completed.</td> |
| </tr> |
| <tr> |
| <td><i class="conum" data-value="6"></i><b>6</b></td> |
| <td>for actions created through the <code>BackgroundService</code>, captures the parent action <.> exception stack trace, if action threw exception <.> bookmark to object returned by action, if any <.> the policy controlling whether this command should ultimately be persisted: |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">public enum CommandPersistence { |
| |
| PERSISTED, |
| IF_HINTED, |
| NOT_PERSISTED |
| |
| }</code></pre> |
| </div> |
| </div></td> |
| </tr> |
| <tr> |
| <td><i class="conum" data-value="7"></i><b>7</b></td> |
| <td>whether that the command should be persisted, if persistence policy is "if hinted".</td> |
| </tr> |
| </table> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="implementation"><a class="anchor" href="#implementation"></a>Implementation</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>The <code>o.a.i.applib.services.command.CommandContext</code> is also the default implementation of the service.</p> |
| </div> |
| <div class="paragraph"> |
| <p>The implementation of <code>Command</code> will provided by the <a href="CommandService.html" class="page"><code>CommandService</code></a> SPI.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="usage"><a class="anchor" href="#usage"></a>Usage</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>The typical way to indicate that an action should be treated as a command is to annotate it with the <a href="../applib-ant/Action.html#command" class="page"><code>@Action#command()</code></a> annotation.</p> |
| </div> |
| <div class="paragraph"> |
| <p>For example:</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">public class ToDoItem ... { |
| @Action(command=CommandReification.ENABLED) |
| public ToDoItem completed() { /* ... */ } |
| }</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>As an alternative to annotating every action with <a href="../applib-ant/Action.html#command" class="page"><code>@Action#command()</code></a>, use the <a href="../config/sections/isis.applib.html#isis.applib.annotation.action.command" class="page"><code>isis.applib.annotation.action.command</code></a> to define a global default.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="interacting-with-the-services"><a class="anchor" href="#interacting-with-the-services"></a>Interacting with the services</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Typically domain objects will have little need to interact with the <code>CommandContext</code> and <code>Command</code> directly; what is more useful is that these are persisted in support of the various use cases identified above.</p> |
| </div> |
| <div class="paragraph"> |
| <p>One case however where a domain object might want to obtain the <code>Command</code> is to determine whether it has been invoked in the foreground, or in the background. |
| It can do this using the <code>getExecutedIn()</code> method:</p> |
| </div> |
| <div class="paragraph"> |
| <p>Although not often needed, this then allows the domain object to access the <code>Command</code> object through the <code>CommandContext</code> service. |
| To expand the above example:</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">public class ToDoItem ... { |
| @Action( |
| command=CommandReification.ENABLED, |
| commandExecuteIn=CommandExecuteIn.BACKGROUND |
| ) |
| public ToDoItem completed() { |
| ... |
| Command currentCommand = commandContext.getCommand(); |
| ... |
| } |
| @Inject |
| CommandContext commandContext; |
| }</code></pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="related-services"><a class="anchor" href="#related-services"></a>Related Services</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>The implementation of <a href="#command"><code>Command</code></a> is provided by the <a href="CommandService.html" class="page"><code>CommandService</code></a>. |
| The default implementation of that service creates an in-memory instance, but other implementations might choose to persist the <code>Command</code>, eg so its execution can be deferred, or replayed.</p> |
| </div> |
| <div class="paragraph"> |
| <p>The <a href="CommandContext.html" class="page"><code>CommandContext</code></a> service itself is very similar in nature to the <a href="InteractionContext.html" class="page"><code>InteractionContext</code></a>, in that the <code>Command</code> object accessed through it is very similar to the <a href="InteractionContext.html#interaction" class="page"><code>Interaction</code></a> object obtained from the <code>InteractionContext</code>. |
| The principle distinction is that while <code>Command</code> represents the <em>intention</em> to invoke an action or edit a property, the <code>Interaction</code> (and contained <code>Execution</code>s) represents the actual execution.</p> |
| </div> |
| <div class="paragraph"> |
| <p><code>Command</code>s are often combined with implementations of the <a href="PublisherService.html" class="page"><code>PublisherService</code></a> and sometimes also the <a href="AuditerService.html" class="page"><code>AuditerService</code></a>:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>the <code>PublisherService</code> publishes interactions as they have is configured, they provide better traceability as the <code>Command</code> is also correlated with any published events, again through the unique <code>transactionId</code> GUID</p> |
| </li> |
| <li> |
| <p>if a <code>AuditerService</code> is configured, they provide better audit information, since the <code>Command</code> (the 'cause' of an action) can be correlated to the audit records (the "effect" of the action) through the <code>transactionId</code> GUID</p> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </article> |
| <aside class="article-aside toc" role="navigation"> |
| <p class="toc-title">On this page</p> |
| <div id="article-toc"></div> |
| </aside> |
| </main> |
| </div> |
| <footer class="footer"> |
| <div class="content"> |
| <div class="copyright"> |
| <p> |
| Copyright © 2010~2020 The Apache Software Foundation, licensed under the Apache License, v2.0. |
| <br/> |
| Apache, the Apache feather logo, Apache Isis, and the Apache Isis project logo are all trademarks of The Apache Software Foundation. |
| </p> |
| </div> |
| <div class="revision"> |
| <p>Revision: SNAPSHOT</p> |
| </div> |
| </div> |
| </footer> |
| <script src="../../../_/js/site.js"></script> |
| <script async src="../../../_/js/vendor/highlight.js"></script> |
| <script src="../../../_/js/vendor/jquery-3.4.1.min.js"></script> |
| <script src="../../../_/js/vendor/jquery-ui-1.12.1.custom.widget-only.min.js"></script> |
| <script src="../../../_/js/vendor/jquery.tocify.min.js"></script> |
| |
| <script> |
| $(function() { |
| $("#article-toc").tocify( { |
| showEffect: "slideDown", |
| hashGenerator: "pretty", |
| hideEffect: "slideUp", |
| selectors: "h2, h3", |
| scrollTo: 120, |
| smoothScroll: true, |
| theme: "jqueryui", |
| highlightOnScroll: true |
| } ); |
| }); |
| </script> |
| </body> |
| </html> |
