Se ving e AJAX da a di ec ly f m e p le in .NET Printer USS Code 39 in .NET Se ving e AJAX da a di ec ly f m e p le

How to generate, print barcode using .NET, Java sdk library control with example project source code free download:
2. using .net framework toproduce 3 of 9 on web,windows application Elipse BIRT Project Se ving e AJAX da a di ec ly f m e p le The JSR-286 prov ides you with the ability to serve resources directly using the portlet serving the AJAX directly for the portlet. Thus, you can issue XmlHttpRequests to ResourceURLs and, on the server side, get complete access to the portlet context, for example, render parameter, portlet mode, window state, portlet preferences, and portlet session. You can also make some state changes in the serveResource call, for example, changing the portlet preferences and data in the portlet session scope.

The following is sample AJAX code abstracted from portlet.js:. var xHR = jQuery barcode 39 for .NET .ajax( { async: false, data: instance.

_buildRequestData(), type: "GET", url: themeDisplay.getPathContext() + "/c/portal/portlet_url"} ); return xHR.responseText;.

The code above i mplements asynchronous updates that make the user interface more responsive. For instance, the AJAX calls go through the portlet URL. Note that you can also leverage resource URLs to provide the links to the JavaScript library.

. U ilizing e fea es The JSR-286 was designed to avoid breaking binary code compatibility with the JSR-168, and to maintain compatible behavior for all API methods. Here, we only cover various smaller additions that can support use cases, for example, Java 5 features, caching features, runtime IDs, and taglib additions..

Using JAVA 5 fea es The JSR-286 leve rages some of the Java 5 features, for example, using Generics and introducing a class Enum for all user profile attributes.. GenericPortlet a ANSI/AIM Code 39 for .NET lso allows using the annotations to make dispatching life cycle calls to specific handler code easier. ProcessAction annotates a method that should process a specific action.

In order to allow dispatching, the Action URL needs to include the javax.portlet.action parameter that is predefined action name in ActionRequest.

ACTION_NAME. ProcessEvent annotates methods that should process specific events, while RenderMode annotates methods that should render a specific portlet mode..

[ 45 ]. This material is VS .NET barcode 3 of 9 copyright and is licensed for the sole use by Richard Ostheimer on 20th June 2009 2205 hilda ave., , missoula, , 59801.

Working with JSR-286 Portlets The following co Code 39 Extended for .NET de shows how to use the ProcessAction annotations:. // generating th e URL String name = "getting_category"; PortletURL url = response.createActionURL(); url.setParameter(ActionRequest.

ACTION_NAME, name); url.write(output); // method for handling the action @ProcessAction (name="getting_category") void processMyActionA(ActionRequest req, ActionResponse resp). Empl ying cac ing fea es The JSR-286 adds new caching features that help making portlets scale better: Public caching scope marking cache entries shared across users Multiple cached views per portlet Validation-based caching for validating expired cache entries. In the JSR-286, VS .NET 39 barcode you can tell the portlet container that the cache entry can be shared using the cache-scope element in the deployment descriptor. Thus, you can dramatically reduce the memory footprint for these portlets.

For example, here is public caching scope example specified in portlet.xml:. <portlet> <expiration-cache>30</expiration-cache> <cache-scope>public</cache-scope> </portlet> In brief, the va Code 39 for .NET lidation-based caching is useful in situations where you do not want to re-compute the markup of a portlet often, as it is an expensive operation. It allows you to define a short expiration time so that the portlet gets called often and can check for changes in the backend system.

If nothing has changed in the backend system, validate that the expired cache content is still valid for use by setting the CacheControl.setUseCachedContent( true) and setting a new expiration time. If something has changed in the backend system, then you produce a new markup and change the setting to false.

. Using validation -based caching is beneficial only if the operations for creating the markup are expensive as compared to the operations for checking the backend state.. [ 46 ]. This material is copyright and is licensed for the sole use by Richard Ostheimer on 20th June 2009 2205 hilda ave., , missoula, , 59801. 2 . S a ing n ime ID You can use the Visual Studio .NET Code 39 Extended Runtime ID to scope the data that the portlet handles to avoid collisions between multiple occurrences of a portlet within the same portal, and maybe even on the same page. First of all, the JSR-286 extended the lifetime of the namespace runtime ID, using the response.

getNamespace method, from being valid for only one request to now being stable for the lifetime of the portlet window. Then, JSR-286 introduced a new API call that allows you to get to a unique ID for the portlet window using the portletRequest.getWindowID method, allowing you to use this ID as a key for the data that you want to create namespace per portlet window.

following methods:.
Copyright © . All rights reserved.