The document provides an overview of controllers (handlers) in the Model-View-Controller (MVC) design pattern as used in Coldbox applications. It discusses how handlers control application flow and call business logic. It describes handler anatomy, including public action methods, composed properties, and feature properties. It also explains how to get/set request values, set views and layouts, relocate to other events, render data, integrate models, and perform validation in handlers.
The document describes the Spring MVC request lifecycle and how requests are handled in Spring MVC. It discusses how the DispatcherServlet receives requests and uses handler mappings to determine which controller should handle each request. It then describes how controllers process requests, returning a ModelAndView which is used to render the view. It also provides details on configuring controllers, view resolvers, and handler mappings, as well as examples of different types of controllers like command, form, and multi-action controllers.
This document summarizes Paco de la Cruz's presentation on Azure Durable Functions. The presentation covered the evolution of application platforms from on-premises to serverless. It then discussed Azure Functions and some challenges it faces with stateful orchestrations. Durable Functions were introduced as an extension of Azure Functions that uses a Durable Task Framework to implement stateful workflows in a serverless manner. Key patterns demonstrated include function chaining, fan-out/fan-in, and using an orchestration client to start and monitor orchestrations. Code samples and demos were provided to illustrate approval workflows using Durable Functions.
1. Spring MVC is the web framework module of the Spring Framework, providing MVC architecture support and web request handling capabilities.
2. The DispatcherServlet is central to Spring MVC and handles incoming web requests, passing them to controllers for processing and returning a model and view.
3. Controllers handle requests and return a model and view, with the view resolver determining how to render the view. Annotations allow specifying request mappings and other configurations.
Paco de la Cruz gave a presentation on Durable Functions 2.0 and stateful serverless functions. The presentation covered an overview of serverless computing on Azure, a recap of Azure Functions and an introduction to Durable Functions. It discussed new features in Durable Functions 2.0 including Durable Entities, additional function types and patterns. The presentation also provided demonstrations of common Durable Functions patterns and a stateful serverless request bin application. It concluded with a Q&A section.
This document provides an overview of Durable Functions, which allow for implementing stateful workflows in Azure Functions. Durable Functions enable writing stateful workflows as code by using orchestrator functions to coordinate asynchronous activity functions. Key components include orchestrator functions that call and coordinate stateless activity functions, and an orchestration client to start and manage orchestrations. Patterns demonstrated include function chaining, fan-out/fan-in, and using an orchestration client to start and monitor orchestrations.
Spring MVC is the web component of the Spring framework. It follows the MVC pattern with controllers handling requests and generating models for views to display. Spring MVC supports annotations for mapping requests to controller methods and binding request parameters to Java objects. It provides validation, internationalization, and AJAX support through integration with other libraries. Common view technologies like JSP are supported through tags that integrate with Spring MVC.
Java Spring MVC Framework with AngularJS by Google and HTML5Tuna Tore
The document provides an introduction to the Spring MVC framework. It describes key concepts such as MVC architecture, dependency injection, configuration of the DispatcherServlet, mapping requests to controllers, and defining views. It also discusses configuring ORM/JPA with Hibernate, sending emails, security, exceptions handling, and accessing REST services with RestTemplate. The document aims to give developers an overview of building web applications with Spring MVC.
This document discusses Spring MVC annotations used in controller classes. The @Controller annotation marks a class as a controller. The @RequestMapping annotation maps requests to controller methods. @PathVariable binds path variables to method parameters. @RequestParam binds query parameters. @RequestBody and @ResponseBody bind request/response bodies. Supported method argument and return types are also described.
The document describes the Spring MVC request lifecycle and how requests are handled in Spring MVC. It discusses how the DispatcherServlet receives requests and uses handler mappings to determine which controller should handle each request. It then describes how controllers process requests, returning a ModelAndView which is used to render the view. It also provides details on configuring controllers, view resolvers, and handler mappings, as well as examples of different types of controllers like command, form, and multi-action controllers.
This document summarizes Paco de la Cruz's presentation on Azure Durable Functions. The presentation covered the evolution of application platforms from on-premises to serverless. It then discussed Azure Functions and some challenges it faces with stateful orchestrations. Durable Functions were introduced as an extension of Azure Functions that uses a Durable Task Framework to implement stateful workflows in a serverless manner. Key patterns demonstrated include function chaining, fan-out/fan-in, and using an orchestration client to start and monitor orchestrations. Code samples and demos were provided to illustrate approval workflows using Durable Functions.
1. Spring MVC is the web framework module of the Spring Framework, providing MVC architecture support and web request handling capabilities.
2. The DispatcherServlet is central to Spring MVC and handles incoming web requests, passing them to controllers for processing and returning a model and view.
3. Controllers handle requests and return a model and view, with the view resolver determining how to render the view. Annotations allow specifying request mappings and other configurations.
Paco de la Cruz gave a presentation on Durable Functions 2.0 and stateful serverless functions. The presentation covered an overview of serverless computing on Azure, a recap of Azure Functions and an introduction to Durable Functions. It discussed new features in Durable Functions 2.0 including Durable Entities, additional function types and patterns. The presentation also provided demonstrations of common Durable Functions patterns and a stateful serverless request bin application. It concluded with a Q&A section.
This document provides an overview of Durable Functions, which allow for implementing stateful workflows in Azure Functions. Durable Functions enable writing stateful workflows as code by using orchestrator functions to coordinate asynchronous activity functions. Key components include orchestrator functions that call and coordinate stateless activity functions, and an orchestration client to start and manage orchestrations. Patterns demonstrated include function chaining, fan-out/fan-in, and using an orchestration client to start and monitor orchestrations.
Spring MVC is the web component of the Spring framework. It follows the MVC pattern with controllers handling requests and generating models for views to display. Spring MVC supports annotations for mapping requests to controller methods and binding request parameters to Java objects. It provides validation, internationalization, and AJAX support through integration with other libraries. Common view technologies like JSP are supported through tags that integrate with Spring MVC.
Java Spring MVC Framework with AngularJS by Google and HTML5Tuna Tore
The document provides an introduction to the Spring MVC framework. It describes key concepts such as MVC architecture, dependency injection, configuration of the DispatcherServlet, mapping requests to controllers, and defining views. It also discusses configuring ORM/JPA with Hibernate, sending emails, security, exceptions handling, and accessing REST services with RestTemplate. The document aims to give developers an overview of building web applications with Spring MVC.
This document discusses Spring MVC annotations used in controller classes. The @Controller annotation marks a class as a controller. The @RequestMapping annotation maps requests to controller methods. @PathVariable binds path variables to method parameters. @RequestParam binds query parameters. @RequestBody and @ResponseBody bind request/response bodies. Supported method argument and return types are also described.
AAI 2236-Using the New Java Concurrency Utilities with IBM WebSphereKevin Sutter
The document discusses the new Java Concurrency Utilities introduced in Java EE 7, including managed executor services, scheduled executor services, managed thread factories, and context services that allow execution of asynchronous tasks on managed threads while propagating common Java EE contexts. It outlines the goals and APIs of these services and provides examples of how developers can utilize managed executor services, scheduled executor services, and context services in Java EE applications to support concurrency patterns. The document also lists additional related sessions at the InterConnect 2015 conference that may be of interest.
Serverless APIs, the Good, the Bad and the Ugly (2019-09-19)Paco de la Cruz
This document outlines Paco de la Cruz's presentation on serverless APIs. The presentation covers an introduction to serverless computing and functions as a service (FaaS), major serverless platforms like AWS Lambda, Azure Functions, and Google Cloud Functions, use cases for serverless, benefits and downsides, strategies for mitigating cold starts, and demos of building serverless applications on Azure Functions.
The document provides an overview of servlets, including:
- What servlets are and how they work
- The lifecycle of a servlet from initialization to handling requests to destruction
- Options for server-side development like CGI, FastCGI, PHP
- Advantages of using servlets like performance, portability, and security
The document discusses building RESTful applications with Spring MVC. It covers the pillars of REST including resources, URIs, HTTP methods, and representations. It provides examples of modeling resources as controllers and mapping HTTP methods to controller actions. It also discusses content negotiation, supporting different data representations like JSON, XML and RSS using Spring views.
The document discusses servlets and how they work. Servlets are server-side Java programs that generate responses, usually in the form of HTML pages, to requests from web clients. Servlets run within a servlet container, which manages loading and executing servlets in response to requests. Servlets can access request parameters and session information, generate dynamic content, connect to databases, and more. Common methods include doGet() and doPost() to handle different HTTP request types.
This document provides an overview of using Dropwizard, an open-source Java framework, to build RESTful web services. It discusses REST concepts like resources and representations, REST verbs like GET and POST, and architectures for REST APIs. It then introduces Dropwizard and its components for building HTTP services with features like Jetty, Jersey, Jackson, and metrics support. The document demonstrates a sample Dropwizard TODO list application with REST endpoints and resources and discusses considerations for development, testing, and deployment.
Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.
Scaling with Scala: refactoring a back-end service into the mobile ageDragos Manolescu
Services built with 20th century programming languages are reaching their scalability limits. The global interpreter lock and the lack of an asynchronous programming model are becoming barriers to accommodating the numbers of users typical of today's mobile as well as web worlds. In this talk I cover the transition of a back-end service to Scala and the changes associated with it. The improved performance and cost savings of the Scala implementation free up resources that could be better leveraged elsewhere.
Kogito: cloud native business automationMario Fusco
The document discusses business automation in the cloud using Kogito. It begins with an introduction to business automation concepts like processes, rules, and workflows. It then provides an overview of Kogito, describing it as a cloud-native development, deployment and execution platform for business automation that uses technologies like Drools, jBPM, and Quarkus under the hood. The document also demonstrates a sample serverless workflow built with Kogito.
Reactive programming with Rx-Java allows building responsive systems that can handle varying workloads and failures. It promotes asynchronous and non-blocking code using observable sequences and operators. Rx-Java was created at Netflix to address issues like network chattiness and callback hell in their API. It transforms callback-based code into declarative pipelines. Key concepts are Observables that emit notifications, Operators that transform Observables, and Subscribers that receive emitted items. Rx-Java gained popularity due to its support for concurrency, error handling, and composability.
This document provides an overview of the Spray toolkit for building REST/HTTP services in Scala. It discusses what Spray is, why we use it, Spray application architecture including the Spray-can HTTP server and Spray routing. It also covers topics like directives, parameters, marshalling, unmarshalling and testing Spray applications using the Spray test kit.
«От экспериментов с инфраструктурой до внедрения в продакшен»FDConf
The document discusses testing and development environments and tools. It covers topics like unit testing frameworks, test runners, dependency management with package managers, bundling code with webpack, and using tasks runners like Gulp. It provides examples of using these tools like writing unit tests with Jasmine/Mocha, configuring webpack, and defining Gulp tasks.
Flask-RESTX is an extension for Flask that adds support for quickly building REST APIs. Flask-RESTX encourages best practices with minimal setup. If you are familiar with Flask, Flask-RESTX should be easy to pick up. It provides a coherent collection of decorators and tools to describe your API and expose its documentation properly using Swagger.
1) The Salesforce1 Platform allows developers to build apps using core services like Chatter, Analytics, and APIs.
2) Developers can use declarative tools like workflows, visualforce, and formula fields or program with Apex.
3) Apex is Salesforce's programming language that allows developers to extend functionality with custom objects, logic, and integrations using HTTP callouts.
This document describes setting up a system to capture IoT data streams using both AWS IoT and Kinesis. Rules are configured to activate a Direct-To-Kinesis stream during certain events to capture real-time data. Lambda functions are created to handle logging, process Kinesis stream data, and publish updates to device shadows to control the streaming state. The code sample connects a device, sends test messages, and demonstrates switching between AWS IoT and Kinesis streaming based on the device shadow state.
Presentation from 2nd meeting of ASP.NET MVC 4 Study Group. It containts:
1. Route registration (also for areas).
2. How routing works?
3. URL Generation.
4. Route Debugging.
Reactive Fault Tolerant Programming with Hystrix and RxJavaMatt Stine
This document discusses reactive fault tolerant programming using Hystrix and RxJava. It begins with an overview of microservices architecture and how latency can occur between services. It then introduces futures and CompletableFutures as ways to allow asynchronous and parallel processing. RxJava is presented as a reactive programming library that can be used to compose asynchronous and event-based programs. Hystrix is discussed as a library for implementing the circuit breaker pattern to handle failures gracefully in distributed systems. The document provides examples of using RxJava and Hystrix to build fault tolerant reactive microservices.
This document provides an introduction to Spring MVC and its core concepts. It discusses the Model-View-Controller (MVC) architecture that Spring MVC is based on, including the model, view and controller components. It also describes the request processing lifecycle in Spring MVC, from the client request to the controller processing to view resolution. Additionally, it covers important Spring MVC concepts like context configuration, context hierarchy, and view resolvers.
The document discusses ASP.NET MVC framework concepts including:
- MVC architecture divides applications into models, views, and controllers. Models manage state, views display UI, and controllers handle user input and choose views.
- Advantages of MVC include clean separation of concerns, testable UI, reuse of views/models, and organized code.
- The Razor view engine renders HTML from dynamic server-side code using a specially designed parser.
- ASP.NET MVC classes are in the System.Web.Mvc namespace which contains controllers, views, and other core classes.
The document provides an introduction to the Spring MVC framework. It describes key concepts such as MVC architecture, dependency injection, configuration of the DispatcherServlet, mapping requests to controllers, and defining views. It also discusses configuring other features like file uploads, scheduling, logging, security, and exceptions handling. The document encourages enrolling in a Udemy course for more details on using Spring MVC.
AAI 2236-Using the New Java Concurrency Utilities with IBM WebSphereKevin Sutter
The document discusses the new Java Concurrency Utilities introduced in Java EE 7, including managed executor services, scheduled executor services, managed thread factories, and context services that allow execution of asynchronous tasks on managed threads while propagating common Java EE contexts. It outlines the goals and APIs of these services and provides examples of how developers can utilize managed executor services, scheduled executor services, and context services in Java EE applications to support concurrency patterns. The document also lists additional related sessions at the InterConnect 2015 conference that may be of interest.
Serverless APIs, the Good, the Bad and the Ugly (2019-09-19)Paco de la Cruz
This document outlines Paco de la Cruz's presentation on serverless APIs. The presentation covers an introduction to serverless computing and functions as a service (FaaS), major serverless platforms like AWS Lambda, Azure Functions, and Google Cloud Functions, use cases for serverless, benefits and downsides, strategies for mitigating cold starts, and demos of building serverless applications on Azure Functions.
The document provides an overview of servlets, including:
- What servlets are and how they work
- The lifecycle of a servlet from initialization to handling requests to destruction
- Options for server-side development like CGI, FastCGI, PHP
- Advantages of using servlets like performance, portability, and security
The document discusses building RESTful applications with Spring MVC. It covers the pillars of REST including resources, URIs, HTTP methods, and representations. It provides examples of modeling resources as controllers and mapping HTTP methods to controller actions. It also discusses content negotiation, supporting different data representations like JSON, XML and RSS using Spring views.
The document discusses servlets and how they work. Servlets are server-side Java programs that generate responses, usually in the form of HTML pages, to requests from web clients. Servlets run within a servlet container, which manages loading and executing servlets in response to requests. Servlets can access request parameters and session information, generate dynamic content, connect to databases, and more. Common methods include doGet() and doPost() to handle different HTTP request types.
This document provides an overview of using Dropwizard, an open-source Java framework, to build RESTful web services. It discusses REST concepts like resources and representations, REST verbs like GET and POST, and architectures for REST APIs. It then introduces Dropwizard and its components for building HTTP services with features like Jetty, Jersey, Jackson, and metrics support. The document demonstrates a sample Dropwizard TODO list application with REST endpoints and resources and discusses considerations for development, testing, and deployment.
Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.
Scaling with Scala: refactoring a back-end service into the mobile ageDragos Manolescu
Services built with 20th century programming languages are reaching their scalability limits. The global interpreter lock and the lack of an asynchronous programming model are becoming barriers to accommodating the numbers of users typical of today's mobile as well as web worlds. In this talk I cover the transition of a back-end service to Scala and the changes associated with it. The improved performance and cost savings of the Scala implementation free up resources that could be better leveraged elsewhere.
Kogito: cloud native business automationMario Fusco
The document discusses business automation in the cloud using Kogito. It begins with an introduction to business automation concepts like processes, rules, and workflows. It then provides an overview of Kogito, describing it as a cloud-native development, deployment and execution platform for business automation that uses technologies like Drools, jBPM, and Quarkus under the hood. The document also demonstrates a sample serverless workflow built with Kogito.
Reactive programming with Rx-Java allows building responsive systems that can handle varying workloads and failures. It promotes asynchronous and non-blocking code using observable sequences and operators. Rx-Java was created at Netflix to address issues like network chattiness and callback hell in their API. It transforms callback-based code into declarative pipelines. Key concepts are Observables that emit notifications, Operators that transform Observables, and Subscribers that receive emitted items. Rx-Java gained popularity due to its support for concurrency, error handling, and composability.
This document provides an overview of the Spray toolkit for building REST/HTTP services in Scala. It discusses what Spray is, why we use it, Spray application architecture including the Spray-can HTTP server and Spray routing. It also covers topics like directives, parameters, marshalling, unmarshalling and testing Spray applications using the Spray test kit.
«От экспериментов с инфраструктурой до внедрения в продакшен»FDConf
The document discusses testing and development environments and tools. It covers topics like unit testing frameworks, test runners, dependency management with package managers, bundling code with webpack, and using tasks runners like Gulp. It provides examples of using these tools like writing unit tests with Jasmine/Mocha, configuring webpack, and defining Gulp tasks.
Flask-RESTX is an extension for Flask that adds support for quickly building REST APIs. Flask-RESTX encourages best practices with minimal setup. If you are familiar with Flask, Flask-RESTX should be easy to pick up. It provides a coherent collection of decorators and tools to describe your API and expose its documentation properly using Swagger.
1) The Salesforce1 Platform allows developers to build apps using core services like Chatter, Analytics, and APIs.
2) Developers can use declarative tools like workflows, visualforce, and formula fields or program with Apex.
3) Apex is Salesforce's programming language that allows developers to extend functionality with custom objects, logic, and integrations using HTTP callouts.
This document describes setting up a system to capture IoT data streams using both AWS IoT and Kinesis. Rules are configured to activate a Direct-To-Kinesis stream during certain events to capture real-time data. Lambda functions are created to handle logging, process Kinesis stream data, and publish updates to device shadows to control the streaming state. The code sample connects a device, sends test messages, and demonstrates switching between AWS IoT and Kinesis streaming based on the device shadow state.
Presentation from 2nd meeting of ASP.NET MVC 4 Study Group. It containts:
1. Route registration (also for areas).
2. How routing works?
3. URL Generation.
4. Route Debugging.
Reactive Fault Tolerant Programming with Hystrix and RxJavaMatt Stine
This document discusses reactive fault tolerant programming using Hystrix and RxJava. It begins with an overview of microservices architecture and how latency can occur between services. It then introduces futures and CompletableFutures as ways to allow asynchronous and parallel processing. RxJava is presented as a reactive programming library that can be used to compose asynchronous and event-based programs. Hystrix is discussed as a library for implementing the circuit breaker pattern to handle failures gracefully in distributed systems. The document provides examples of using RxJava and Hystrix to build fault tolerant reactive microservices.
This document provides an introduction to Spring MVC and its core concepts. It discusses the Model-View-Controller (MVC) architecture that Spring MVC is based on, including the model, view and controller components. It also describes the request processing lifecycle in Spring MVC, from the client request to the controller processing to view resolution. Additionally, it covers important Spring MVC concepts like context configuration, context hierarchy, and view resolvers.
The document discusses ASP.NET MVC framework concepts including:
- MVC architecture divides applications into models, views, and controllers. Models manage state, views display UI, and controllers handle user input and choose views.
- Advantages of MVC include clean separation of concerns, testable UI, reuse of views/models, and organized code.
- The Razor view engine renders HTML from dynamic server-side code using a specially designed parser.
- ASP.NET MVC classes are in the System.Web.Mvc namespace which contains controllers, views, and other core classes.
The document provides an introduction to the Spring MVC framework. It describes key concepts such as MVC architecture, dependency injection, configuration of the DispatcherServlet, mapping requests to controllers, and defining views. It also discusses configuring other features like file uploads, scheduling, logging, security, and exceptions handling. The document encourages enrolling in a Udemy course for more details on using Spring MVC.
This document provides an overview of Spring MVC including:
- The MVC design pattern and how Spring MVC implements it with a front controller and other components.
- Configuring Spring MVC in a web application using XML or Java configuration.
- Defining controllers with annotations like @Controller and @RequestMapping and mapping requests to controller methods.
- Other Spring MVC concepts covered include the DispatcherServlet, handler mappings, view resolution, form handling, and validation.
DDD, CQRS and testing with ASP.Net MVCAndy Butland
This document provides an overview of a presentation on Domain Driven Design (DDD), Command Query Responsibility Segregation (CQRS), and testing with ASP.Net MVC. It introduces the presenter and gives an outline of the topics to be covered, including implementing DDD with ASP.Net MVC and Entity Framework, using a mediator pattern for CQRS, and unit testing models, queries, and commands. References are given to other authors and resources that influenced the approaches and implementations discussed in the presentation.
The Spring MVC framework uses the model-view-controller (MVC) architecture. It features a DispatcherServlet that handles requests and responses and relies on controllers to process user input and build the model data before passing it to the view for rendering. Configuration involves mapping the DispatcherServlet to URLs in web.xml and defining controllers with annotations and handler methods. Spring Security integrates with Spring MVC to add authentication and authorization for specific URLs specified in the spring-security.xml configuration file.
The document provides an introduction to the Spring MVC framework. It discusses the major components of Spring MVC including the DispatcherServlet, HandlerMappings, Controllers, Models, Views, and ViewResolvers. It explains the basic workflow of how a client request is processed in Spring MVC. Finally, it provides examples of implementing different types of controllers.
Microservices with .Net - NDC Sydney, 2016Richard Banks
Presented at NDC Sydney, August 2016
Thanks to organisations like Netflix, and the need to develop solutions that scale well in the cloud, microservices have become the hot new topic. Yet, for all the talk, there are few practical examples of how you actually build a microservice in .NET.
It's time to fix that little oversight as we show you how you can build a microservices based solution using .NET, and a number of open source tools (EventStore, RabbitMq and Redis to name a few).
You'll also get to understand the pros and cons of a microservices solution and consider how a microservices approach might impact how you and your team relate to your customers.
Slides of a talk of a seminars series I gave at WebRatio in January 2014.
I implemented many best practices and advices in this presentation in a generic app template available here: https://github.com/iivanoo/cordovaboilerplate
This presentation will guide you through the MVC Pattern and Flex implementation of MVC (Cairgorm and Mate Frameworks)
http://blog.go4flash.com/articles/flex-articles/mvc-pattern-presentation-cairngorm-vs-mate/
"Angular.js Concepts in Depth" by Aleksandar SimovićJS Belgrade
Angular.js concepts are organized into modules, controllers, scopes, views, directives, filters, and providers. Core concepts include dependency injection which allows components to request services from Angular's injector, and change detection which checks data for changes by running equality checks over dependent data. Modules contain related code and are made up of controllers, filters, directives, services and other components.
The document discusses several Java design patterns:
1. Model-View-Controller (MVC) which separates an application into three main components - the model, the view, and the controller.
2. Business Delegate which acts as an intermediary between clients and business services to simplify relationships and reduce coupling.
3. Composite Entity which manages interactions between coarse-grained and dependent objects internally using a coarse-grained interface.
It also provides examples and descriptions of other patterns like Data Access Object, Front Controller, Intercepting Filter, Service Locator, and Transfer Object.
Airflow is a workflow management system for authoring, scheduling and monitoring workflows or directed acyclic graphs (DAGs) of tasks. It has features like DAGs to define tasks and their relationships, operators to describe tasks, sensors to monitor external systems, hooks to connect to external APIs and databases, and a user interface for visualizing pipelines and monitoring runs. Airflow uses a variety of executors like SequentialExecutor, CeleryExecutor and MesosExecutor to run tasks on schedulers like Celery or Kubernetes. It provides security features like authentication, authorization and impersonation to manage access.
The document discusses the Chain of Responsibility pattern and Command pattern. It defines each pattern, provides examples of how each can be implemented in Java code, and notes related design patterns. The Chain of Responsibility pattern involves passing a request between a chain of objects until an object handles the request, decoupling the sender and receiver. The example shows approving purchase requests by role. The Command pattern encapsulates a request as an object, allowing request parameters and receivers to be changed, decoupling invocation from execution. The example uses actions to trigger window commands.
Mvc interview questions – deep dive jinal desaijinaldesailive
Can you describe ASP.NET MVC Request Life Cycle? 1. Receive request, look up Route object in RouteTable collection and create RouteData object. 2. Create RequestContext instance. 3. Create MvcHandler and pass RequestContext to handler. 4. Identify IControllerFactory from RequestContext. 5. Create instance of class that implements ControllerBase. 6. Call MyController.Execute method. 7. The ControllerActionInvoker determines which action to invoke on the controller and executes the action on the controller, which results in calling the model and returning a view.
Action-Domain-Responder: A Web-Specific Refinement of Model-View-ControllerPaul Jones
Using Model-View-Controller as a pattern to describe stateless HTTP interactions has always been a bit of a kludge. There simply hasn't been a better pattern web applications -- until now.
ADR (Action-Domain-Responder) represents a refinement of generic MVC as an application architecture specifically tuned to the web. In this talk, we will discuss various patterns of overall application architecture, including MVC, MVP, PAC, DCI, RMR, and others. We will find out how the ADR pattern arises from generic MVC, and how it provides a better description of how web applications actually work. Finally, we will go over examples of how to architect an ADR application, as well as how to convert from an MVC architcture to an ADR one.
The document provides an introduction to Spring's Web MVC framework. It discusses the DispatcherServlet which dispatches requests to controllers. Controllers return a ModelAndView containing a view name and model. Views are rendered using view resolvers. Spring supports various controller types including form controllers. It offers separation of roles and flexible configuration of components.
This technical article explains personalization concept in Webcenter Portal. It also provides steps to create a scenario and use it in Webcenter Portal.
This document provides an overview of ASP.Net MVC, including its project structure, characteristics, and how it differs from traditional ASP.Net WebForms. It discusses the basic MVC model and how controllers, views, and dynamic code options work differently than in WebForms. Key differences highlighted are ASP.Net MVC's separation of concerns, testability, cleaner URLs, and faster performance compared to the event-driven and server-controlled nature of WebForms.
Similar to Coldbox developer training – session 5 (20)
2. Review last weeks assignment
• Create Unit Tests
• Create Model CFC‟s w/ BaseGateway
3. Overview
• Talk about the “handler”
• Look at how to use WireBox inside a
handler
• Explore “Integration Testing”
4. MVC – The Controller (Handler)
• Event handlers are synonymous to the
word Controller in the MVC design
pattern. So every time you hear event
handler, you are taking about a controller.
• These event handlers carry the task of
controlling your application flow, calling
business logic, preparing a display to a
user and pretty much controlling flow.
5. MVC – The Controller (Handler)
Simple example:
component{
function index(event,rc,prc){
return "Hi from controller land!";
}
}
6. MVC – The Controller (Handler)
• Handlers reside in the handlers folder and
can be organized by “package” by placing
like CFCs together inside a folder
• Handlers/department/roles.cfc
• Handlers/department/
• You can also declare a
HandlersExternalLocation setting in your
Coldbox.cfc
• Common.handlers
7. MVC – The Controller (Handler)
Handler Registration
• At application startup, the framework registers all
the valid event handler CFCs in these locations
(plus handlers inside of modules).
• Two settings are provided to “reload” mappings
in development environments – these may
cause strange errors in high load or ajax
scenarios
coldbox.handlersIndexAutoReload = true;
coldbox.handlerCaching = false;
8. MVC – The Controller (Handler)
Rules and Anatomy of an Event Handler
• They can be simple CFCs or inherit from our
base handler: coldbox.system.EventHandler.
• They must exist in the correct handlers directory
under your application.
• They must NOT contain any business logic, that
is what the model or business layer is for.
9. MVC – The Controller (Handler)
Rules and Anatomy of an Event Handler
• They must have public methods (actions) that
will respond to ColdBox events.
• Private events have an access type of private
and can only be called from within the
application by using the runEvent() method.
10. MVC – The Controller (Handler)
Rules and Anatomy of an Event Handler
• Handlers are cached by default, unless the
handler caching setting is off. You can configure
persistence via metadata.
• You can easily wire up dependencies in your
handler by using the WireBox injection DSL.
11. MVC – The Controller (Handler)
Composed Properties
• It is imperative that you realize that there is a
great object model behind every event handler
that will enable you to do your work more
efficiently.
• The following are the composed properties
every event handler has in their variables scope,
you do not need to do anything to retreive them,
they are already there :)
12. MVC – The Controller (Handler)
Composed Properties
13. MVC – The Controller (Handler)
Featured Properties
• Each event handler can also exhibit
several feature properties that can be
tuned to alter the behavior of the local
AOP interception points, event caching
and HTTP method security.
– aroundHandler_only /aroundHandler_except
– preHandler_only / preHandler_except
– postHandler_only / postHandler_except
– allowedMethods = {Get, POST, Delete}
14. MVC – The Controller (Handler)
Anatomy of an Event Handler Action
• function sayHello(event,rc,prc){
– event : The request context object reference
– rc : A reference to the request collection inside of the request context object
– prc : A reference to the private request collection inside of the request context
object
15. MVC – The Controller (Handler)
Get/Set Request Values
• We all need values in our applications, and we will
interact with the request context
• RC (and PRC) can
– hold data from our model layer so our views can display it
– retreive data from a user's request
16. MVC – The Controller (Handler)
Get/Set Request Values
• You will either interact with the event object to get/set
values OR put/read values directly via the received rc
and prc references.
• We recommend using the references as structures are
much faster than method calls.
– Prefer: Rc.users = userService.get();
• However, the event object should not be discarded as it
has some pretty cool and funky methods of its own.
17. MVC – The Controller (Handler)
“Event” Object
//set a value for views to use
event.setValue("name", "Luis");
// retrieve a value the user sent
event.getValue("name");
// retrieve a value the user sent or give me a default value
event.getValue("isChecked",false);
//param a value
event.paramValue("user_id","");
//remove a value
event.removeValue("name");
18. MVC – The Controller (Handler)
“Event” Object
//check if value exists
if( event.valueExists("name") ){ }
// set a view for rendering
event.setView('blog/index');
// set a layout for rendering
event.setLayout('main');
// set a view and layout
event.setView(view="blog/userinfo",layout="ajax");
19. MVC – The Controller (Handler)
Setting Views / Layouts
The event object is the object that will let you set the views
that you want to render, so please explore its API in the
CFC Docs
Event.setView(„myView‟) -- NO .cfm
Event.setView(„user/detail‟)
While views can be loaded inherently, it is certainly useful
to be able to switch views programaticaly (ex. user A gets
View A and user B gets View B for a given event)
20. MVC – The Controller (Handler)
Setting Views / Layouts
We recommend that you maintain a consistent naming and location
schema between views and your handler and actions, often called
implicit views.
So if you have an incoming event called: users.index then make sure
in your views folder you have:
Views
-users
--index.cfm
This way debugging is much easier and also Implicit Views can be
used. Implicit views means that you won't use a event.setView() to
specify what view to render. It is implied the view to render will be the
same as the executing event.
21. MVC – The Controller (Handler)
Relocating
The framework provides you with a method that you can use to relocate
to other events thanks to the framework super type object
It is extremely important that you use this method when relocating
instead of the native ColdFusion methods as it allows you to gracefully
relocate to other events or external URIs.
By graceful, we mean it does a lot more behind the scenes like making
sure the flash scope is persisted, logging, post processing interceptions
can occur and safe relocations.
22. MVC – The Controller (Handler)
Relocating
setNextEvent
The name of the event or SES pattern to relocate to, if not passed, then it will use the default
event
event found in your configuration file. (Mutex with URI and URL)
URL The absolute URL to relocate to (Mutex with URI and event)
URI The relative URI to relocate to (Mutex with event and URL)
queryString The query string to append to the relocation. It will be converted to SES if SES is used.
addToken Whether to add the cf tokens or not. Default is false
A comma-delimited list of request collection key names that will be flash persisted in the
persist
framework's flash RAM and re-inflated in the next request.
A structure of key-value pairs that will be flash persisted in the framework's flash RAM and re-
persistStruct
inflated in the next request.
ssl Flag indicating if redirect should be done in ssl mode or not
If used, then it is the base url for normal syntax redirection instead of just redirecting to the
baseURL
index.cfm
postProcessExempt Do not fire the postProcess interceptors
statusCode The status code to relocate with
23. MVC – The Controller (Handler)
Rendering Data
You can also use the event.renderData() method to render and
marshal data directly from an event handler without the need to set a
view for rendering.
Out of the box ColdBox can marshall data
(structs,queries,arrays,complex or even ORM entities) into the following
output formats:
– XML, JSON, JSONP, HTML, TEXT, WDDX, PDF,Custom
event.renderData(type="json",data=qUsers)
24. MVC – The Controller (Handler)
Model Integration
As mentioned in some of the early sessions, Wirebox allows us to inject
CFC‟s **NEARLY** anywhere!
component{
// Injection
property name=“model:funkyService" inject;
function index(event,rc,prc){
prc.data = funkyService.getFunkyData();
event.renderData(data=prc.data,type="xml");
}
}
25. MVC – The Controller (Handler)
Model Integration
Coldbox offers a few function to allow us to consume CFC by
REQUESTING them
Via Façade:
prc.data = getModel("FunkyService").getFunkyData();
Directly to Wirebox:
prc.data = wirebox.getInstance("FunkyService").getFunkyData();
Both approaches do exactly the same, in all reality getModel() does a
wirebox.getInstance(), it is a facade method that is easier to
remember.
26. MVC – The Controller (Handler)
Model Integration
Wirebox also offers you the capability to bind incoming
FORM/URL/REMOTE data into your model objects by convention.
populateModel(„myBean‟, rc);
This will try to match incoming variable names to setters or properties
in your domain objects and then populate them for you.
27. MVC – The Controller (Handler)
Validation
Coldbox offers “ValidBox” to allow for annotation based validation
We currently recommend “ValidateThis”, but ValidBox is being
researched!
28. MVC – The Controller (Handler)
Executing Events
Apart from executing events from the URL/FORM or Remote
interfaces, you can also execute events internally, either public or
private from within your event handlers
runEvent(event, prepostExempt, private, eventArguments)
29. MVC – The Controller (Handler)
Testing Controllers
• ColdBox offers two approaches to testing your event handlers:
– Integration Testing : Tests everything top-down in your application
– Handler Testing : Like unit testing for handlers
• Integration testing will virtually create your application and execute
the event you want. Thus, loading everything in a typical request
and simulate it.
• The handler testing just tests the event handler in isolation much like
unit testing does.
30. MVC – The Controller (Handler)
Testing Controllers
• To use “Integration testing”, your test should extend
coldbox.system.testing.baseIntegrationTest
• Events can be executed with the execute() function
function testindex(){
var event = execute("general.index");
assertEquals("Welcome!", event.getValue("welcomeMessage"));
}
• We can then retrieve the event object and thus the requestCollection
to use during our assertions
var event = execute("general.dspLogin");
var prc = event.getCollection(private=true);
assertEquals("general.dspLogin", prc.currentView );
32. MVC – The Controller (Handler)
Assignment
• Add to existing unit test to run GET with a
nominatorPID argument
results=this.myComp.get(nominatorPID='711933859');
assertTrue(isQuery(results));
• Run – FAIL!
• Add NominatorPID argument to
recommendationGateway
• Run – PASS!
33. MVC – The Controller (Handler)
Assignment
• Create a simpler handler CFC for
recommendation.submission
– Add index function
• We don‟t need to “setView” because we‟ve already got an implicit
view in place from last week
• Add an INIT method to recommendationGateway
<cffunction name='init' returnType="any" output="false">
<cfargument name="datasource"
inject="coldbox:datasource:main">
<cfreturn super.init(argumentCollection = arguments)>
</cffunction>
34. MVC – The Controller (Handler)
Assignment
• Autowire recommendationGateway.
– Add the following after the CFCOMPONENT tag in your handler
• <cfproperty name=“recommendations”
inject=“model:recommendation.recommendationGateway”>
• Our “index” handler will call recommendationGateway for data, so
we‟ll add an assertion to
test/integration/recommendation/submissionTest.cfc testIndex
method
Prc = event.getCollection(private=true);
assertTrue(isDefined(„prc.recommendations‟));
assertTrue(isQuery(prc.recommendations));
35. MVC – The Controller (Handler)
Assignment
• Run integration tests – FAIL!!
• Get the data into the handler
<cfset prc.recommendations =
recommendations.get(session.pid)>
• Run Test – PASS!
36. MVC – The Controller (Handler)
Assignment
• Open the recommendation/submission/index.cfm view
– Remove GetFTARs CFINCLUDE
– Begin removal of “getSubmissions_CFCRet” array
• Its now a query, so adjust calls like ArrayLen, CFLOOP, [cnt]
• Move the relocation and access checks code into your handler,
using setNextEvent
<cfif !prc.recordcount>
<cfset setNextEvent(url=„submit.cfm‟)>
</cfif>
<cfif structKeyExists(session,"nominateList") and len(trim(session.nominateList)) eq
0>
<cfset messageBox.warn(„You do not have access to submit nominations. Please contact Lou Anne
Phelps at the Graduate School. (laphelps@email.unc.edu).“)>
<cfset setNextEvent(„general.index‟)>
</cfif>
37. MVC – The Controller (Handler)
Assignment
• We‟ve just “factored up” the call for submission list data and created
/ updated the relevant tests! A small achievement that‟s taken us a
while, but the start of something beautiful!
38. MVC – The Controller (Handler)
Next Week
• FORMS!