vb.net code to generate barcode GeoRSS namespace in Java

Paint PDF417 in Java GeoRSS namespace

GeoRSS namespace
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GeoRSS is a lightweight format that is often used in feeds to map locations by adding basic geometries such as point, line, and box. To learn more about GeoRSS, visit its official site at http://georss.org/. Let s look at an example of a GeoRSS XML:
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<rss version="2.0" xmlns:georss="http://www.georss.org/georss"> <item> <georss:point>37.75988 -122.43739</georss:point> </item> </rss>
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To extract the longitude and latitude point values, you first need to set a namespace just as you did before:
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var georss:Namespace = new Namespace("http://www.georss.org/georss");
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Then you can pull the xml using e4x standard object type format, as shown in Figure 10-15.
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var geoResults:S tring = event.result.item.georss::point;
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Figure 10-15. GeroRSS.xml tree view Complete code:
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< xml version="1.0" encoding="utf-8" > <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="1024" minHeight="768" initialize="service.send();"> <fx:Script> <![CDATA[ import import import import mx.controls.Alert; mx.rpc.http.HTTPService; mx.rpc.events.ResultEvent; mx.rpc.events.FaultEvent;
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private function resultHandler(event:ResultEvent):void { var georss:Namespace = new Namespace("http://www.georss.org/georss"); trace(String(event.result.item.georss::point)); } private function faultHandler(event:FaultEvent):void { service.removeEventListener(FaultEvent.FAULT, faultHandler); Alert.show("Error connecting"); } ]]> </fx:Script> <fx:Declarations> <s:HTTPService id="service" url="assets/xml/GeoRSS.xml" resultFormat="e4x" result="resultHandler(event);" fault="faultHandler(event);"/> </fx:Declarations> </s:Application>
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FLEX MASHUPS
As you can see from the previous example, you make a service call to retrieve the XML and once you retrieve the results You set the name space:
var georss:Namespace = new Namespace("http://www.georss.org/georss");
Yoou can than access the results.
Creating a Proxy
The lack of crossdomain.xml can create a scenario where your Flex application works fine on your local machine but not on your server. The solution for the lack of a crossdomain.xml file is to use a proxy to connect to the data source and have Flash connect to the proxy instead of the data source directly. By connecting to a proxy instead of the service, you can access services that don t allow direct access for Flash. Web pages can access other open APIs and expose the data for the Flash player. The reason that using proxy works is that the Flash player allows accessing services from the same domain without the need to install a cross-domain policy. There are a few ways to use proxies; one is to create a server-side script to connect to the data source. Following are three open source examples of proxies that can be used for RESTful POST and GET methods, as well as for downloading binary data such as SWF files from a remote server. The proxy scripts will be available for download from the friendsofED site (www.friendsofed.com) as part of the example files that accompany this book.
PHP proxy
When using a server with PHP, you can usea lightweight open source PHP proxy script that handles two types of data: RESTful methods of GET and PUT and binary data such as SWF files or images. Keep in mind that PHP supports the CURL method in order for this script to work. The following example loads XML/text:
http://yourserver.com/proxy.php url= http://yourserver.com/blog/index.xml
This example loads a SWF (binary data) file:
http://yourserver.com/proxy.php url= http://yourserver.com/files/some.swf& mimeType=application/x-shockwave-flash
Here s the complete code:
< php // PHP Proxy // Responds to both HTTP GET and POST requests // Author: Abdul Qabiz // March 31st, 2006 // Get the url of to be proxied $url = ($_POST['url']) $_POST['url'] : $_GET['url']; $headers = ($_POST['headers']) $_POST['headers']:$_GET['headers']; $mimeType =($_POST['mimeType']) $_POST['mimeType']: $_GET['mimeType'];
//Start the Curl session $session = curl_init($url); // If it's a POST, put the POST data in the body if ($_POST['url']) { $postvars = ''; while ($element = current($_POST)) { $postvars .= key($_POST).'='.$element.'&'; next($_POST); } curl_setopt ($session, CURLOPT_POST, true); curl_setopt ($session, CURLOPT_POSTFIELDS, $postvars); } // Don't return HTTP headers. Do return the contents of the call curl_setopt($session,CURLOPT_HEADER,($headers=="true") true:false); curl_setopt($session, CURLOPT_FOLLOWLOCATION, true); //curl_setopt($ch, CURLOPT_TIMEOUT, 4); curl_setopt($session, CURLOPT_RETURNTRANSFER, true); // Make the call $response = curl_exec($session); if ($mimeType != "") { // The web service returns XML. // Set the Content-Type appropriately header("Content-Type: ".$mimeType); } echo $response; curl_close($session); >
You first get the URL using either POST or GET, then you set the curl request and make the call and return the XML.
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