Portlet processaction doview software

But when we use liferay mvc portlet we need not override any of the above methods because those methods already implemented and they have designed good mechanism to render views and perform portlet action. The portal server software includes its own portlet deployment descriptor in the sunportlet. Sep 17, 2016 portlet preferences is a feature of liferay to store portlet level configuration data. If you just arbitrarily call the method from a different phase or from outside of the whole lifecycle at all, you by definition arent in the action phase.

The portlet container creates an actionrequest object and passes it as argument to the portlet s processaction method. To respond to processaction the portlet should update its actionresponse object which. A default implementation is provided with the api, but were going to override it for this portlet and provide our own implementation. Thus a portlet could do the redirect after a random page refresh, or interaction with another portlet. Developing custom portlets tutorial support gwconnect. This is useful for a default view as well as for views that need to be rendered from the portlets edit and help butt. The following sequence diagram illustrates how a datum is fetched from the datastore and displayed in the portal. In order to use this feature, make sure your portal server supports it. The portlet sends the response object back to the portal after every request. The scriptlet at the end of the file uses one of these variables, renderrequest, to get the configuration which was stored in the renderrequest by your portlet s doview method.

Java portlets are based on the jsr 286 specification, which provides an api and establishes rules for portlet portability. Portlets are used by portals as pluggable user interface components. Portlet lifecycle, portlet life cycle, portlet multithreading issues, implemen portlet interface, portlet tutorial, portlet example, apache pluto portlet. Window state determines how much content should appear in a portlet. Portals provide a page view composed of individual windows called portlets, which aggregate and. After extending baseportlet, we can override the lifecycle methods specified in portlet specification. How to get spring context inside a portlet processaction. Jan 05, 2004 so, the portlet can set session params that can be accessed by the servlet directly.

Below is sample portlet which reset state of portlet using portlet session. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. User visits list page where all records are listed. Now the old portlet is deleted the new one is created. I know i can do it from the processaction method but unfortunately the semantics of the problem dont allow it.

Linking to portlet channels in different tabs oracle. Portlet can get the vault slot by iterating through all accessible slots and. It will be very easy for an administrator to apply policy on what you can or can not see. The processaction method is there to provide a place where portlet actions can be processed. The portlet specifications aims at defining portlets that can be used by any jsr168 portlet 1. Java portlets are intended for software companies and other enterprises that are. To create seperate portlets components who also produce their own images dynamically etc, it might be interesting that jsr168 1. The portlet container is responsible for invoking these methods as appropriate. By enrique lara, oci software engineer and consultant. My jsf portlet tutorial portals and portlets forum at. It provides an abstract class to be subclassed to create portlets.

The best way to integrate with the remote application would be to pass the information using url parameters or submit data. Now, we add the code for these three methods, as we did back in chapter 3 in listings 3. In sun portal, an url can only have one action, like actioncontent or actionprocess. In the presented introduction about apache pluto, weve mainly discussed the most simple portlet application that you may have. Bonjour, je suis tout nouveau sur liferay, je dois developper une portlet et jai vraiment du mal a assimiler a quoi servent les fonctions doview et doedit jai cru. The portlet interface is used by the portlet container to invoke the portlets. Using shared credential vault slot in websphere portal 6. Linking to portlet channels in different tabs oracle community. It is managed by the portlet container and processes requests and generates dynamic content as response. If you declare a doview method in your portlet or you specify the portlet annotation, they will both convert to the same spring styled annotated declaration. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. The java portlet specification defines a contract between the portlet container and portlets and provides a convenient programming model for java portlet developers portlets are pluggable user interface software components that are managed and displayed in a web portal, for example an enterprise portal or a web cms.

Introduction to portlet programming with jsr168 colorado. A portlet is a pluggable component that can be run inside any compliant portal server. This seminar will illustrate the skills and knowledge you need to code robust portlet applications using rad v7. The java portlet specification the java portlet api. The actions rendered by the query view should be consistent with a portlet. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Portlet code with method stubs created for doedit, doview, and processaction. Every portlet has to implement this interface, either by directly implementing it, or by using an existing class implementing the portlet interface.

In this blog we will discuss about storing portlet preferences. Java portlets are intended for software companies and other enterprises that are concerned with portability across multiple portlet containers. Techno softwares deals in web design and development, customized erps. Chapter 12 extending the genericportlet abstract class sun. If i referesh the whole page i get the new portlet. Problem while uploading xls file through servlet program.

The portlet container instantiates portlets, manages their lifecycle and invokes them to process requests. Most java ee portals include one, it is obviously the case for jboss portal which includes the jboss portlet container supporting the two versions. The credentials set in shared vault slot by a user can be accessed from any of the portlets of user. Even though it is a required feature in the portlet spec, some portals dont handle it or have alternative ways of handling it. The business scenarios are more complicated then normal and they require a full knowledge about the portlet, portlet life cycle and how could provide a compliant enhanced portlet that complying with the latest standards presented at the portlet field. The portlet redirects a request to a web script, which in turn renders a query view as a jsr168 portlet. The java portlet specification defines a contract between the portlet container and portlets and provides a convenient programming model for java portlet developers. When developing web applications using servlets, the servlets service method is invoked during the request handling. Prerequisites each student should be familiar with the web concepts, html, xml, ebusiness application concepts. They provide you a desktop with different windows for all of the applications that you might need. The default view of your application is provided by your applications view. Javaportaltechnologie institut fur informatik universitat leipzig.

In the generic portlet development portlet class need to override doview, processaction for every use of portlet action or render. If only the view mode is required, then only the doview method needs to be implemented. Developing portlets with the netbeans portlet plugin. Ppt portals and portlets powerpoint presentation free. How to get spring context inside a portlet processaction, doview.

A subclass of genericportlet should either use one of the following annotations. Implementing configuration actions liferay help center. You can change the state of a portlet in the action phase, that is typically handled by the processaction method or, for the many frameworks, an equivalent method. There are three standard window states defined in the specification. Following is the list of some important methods available to override. Liferay mvc portlet development introduction liferay community. This article describes portlet development using the netbeans portlet plugin for the portlet container 1. Spring allows for very flexible method signatures more on this in a future blog, but for ease of use we will change the void signature method to return a string and retain the same. To call portlet process action method we will use portlet action url. Portlet session information cannot be shared with an application that is not also in the same war file that the portlet is deployed in. Chapter 14 extending the genericportlet abstract class. Jsr 168 portlet specification coding oracle community. Portletresponse provides you a three methods only, setproperty, getproperty and encodeurl. Quick conversion to springmvc portlets isos technology.

Portlet render also provides a default implementation for the processaction, init and destroy methods. This file includes information about how the portlet container within the portal server software should. Dave landers portlets jsr168 page 12 the portlet api javax. Bookmark portlet now consists of three stub methods for doview, doedit and processaction that we need to. Since the sample portlet also uses preferences, the preference setting is also. Noel bergman introduction to portlet programming with jsr168 page 33 the portletrequest interface. In my next article, i will address the deployment of portlets within apache pluto the reference implementation of the java portlet specification and show how using pluto as a lightweight development environment can increase productivity. A subclass of genericportlet should override at least one method, usually one of the following. You should note that weve distinguished between post request and get request in the processaction method due to the perl portlet kind. Portlet open source trading site post list portlet. I am developing a jsp portlet application under uporta jsr 168 portlet. It uses cmis getchildren to get the children of the folder browsed, initially the company home at the top of the repository. We can understand the functionality of portlet and servlet by comparing characteristics of servlet vs portlet.

Chapter 14 extending the genericportlet abstract class sun. Lets look at how portlet urls are different from servlet urls. Portlets are pluggable user interface software components that are managed and displayed in a web portal, for example an enterprise portal or a web cms. Finally, the value of a specific field favoritecolor is read from the configuration. Because requests can only be sent to a portlet using selfreferencing portlet urls, the portlet instance is responsible for setting portlet urls as part of it generated content. This method also supports routing of the sitevision custom. The processaction have defined the all required code for getting an employee registered. It is recommended to extend genericportlet for most cases. How to pass information from processaction to doview similar. So by clicking a link that points to a portlet in a different tab invokes the processaction and doview methods correctly but the tab just doesnt change. I think the better solution is to have all that processing occur during the processaction phase instead of the doview phase. In the generic portlet development portlet class need to override doview,processaction for every use of portlet action or render. Servlet and portlet are web component used to generate content for user request.

Chapter 12 extending the genericportlet abstract class. A base class for porlets consisting on multiple jsps with before and after actions e. Portlets doview method problem in portlets jboss developer. Portlet can get the vault slot by iterating through all accessible slots and finding the one that matches the resource name.

But when i refer this attribute value in my doview method it is always returning null. Liferay mvc is portlet development framework and we can develop jsr. Learn all about the second version of the java portlet specification jsr 286. We can also store portlet preferences as keyvalue pair using portlet. The response object contains the portlet fragment that will be drawn into portal page. In portlets, portlet urls are used to send a request, of a particular request type, to portlet instances. Ioexception called by the portlet container to allow the portlet to process an action request. Called by the portlet container to allow the portlet to process an action request. This method is called if the client request was originated by a url created by the portlet with the renderresponse. The portlet container invokes the portlet, which in turn generates the content in its render phase.

Your subclass of genericportlet can implement any of these methods that you desire. Portlet abstracts the portlet api and has render and processaction methods to represent render and action phases respectively. This class, specialized from genericportlet, uses the method doview to create the portlet view. It could be pretty evil to be able to do that a portlets doview can be called anytime by the portal, without users interaction with that portlet. A portlet can aggregate integrate and personalize content from different. Portletexception this method follows jsf spec section 2. Introduction to extending the genericportlet abstract class. For example, when a view accesses a content and details page, this should be handled in a portalfriendly way. I will start with the life cycle of portlet not jsf portlet. It constructs a browser view specialized for a portlet and.

Render handles render requests setting the title of the portlet in the response and invoking dodispatch. Portlet tutorial, apache pluto portlet portal example tutorial, portlet request, portlet response, portlet example code, action request, action response. This method routes the render requests to the proper rendering method. The portlet programming model also provides events and public render parameters so that you can build larger composite applications out of your portlets and. As we knew, the portlet isnt a standalone resource like servlet that can be accessed through a well defined. If only the view mode is required, only the doview method needs to be implemented. It could be pretty evil to be able to do that a portlet s doview can be called anytime by the portal, without users interaction with that portlet. This tutorial will help you getting all of these concepts achieved as its would show you a full example of how can orchestrate between portlets, jsps and servlets for making an employee registration mission so organized. My jsf portlet tutorial portals and portlets forum at coderanch.