Can't reuse HTTPRequest --- how can I reuse this code?

Question

public var getCategories: HttpRequest = HttpRequest {
    location: "http://lydias-kitchen.com/FXcategories.php";
    onInput: function(is: java.io.InputStream) {
        try {
            if(is.available()> 0){
              categories.parser.input = is;
              categories.parser.parse();
         } finally {
             is.close();
             var a = ids.size();
             println ("categories ids size = {a}");
             var b = bind (a-1);
             for (i in [0 .. b]){
                println("ids = { ids} names = {names[i]}");
categories.newCategoryItem = com.javafx.preview.control.MenuItem {
text: names[i]
id: ids[i]
onMouseClicked: function(e:javafx.scene.input.MouseEvent) {
Main.CategoryId = e.node.id;
println("category id = {Main.CategoryId}") ;
recipes.getRecipes.start();
font: Font {name: "Times New Roman" size: 20}
graphic: ImageView {image: Image {url: "{__DIR__}images/ball.png"}
fitWidth: 32
fitHeight: 32
insert newCategoryItem into Main.categoryItems;
{code}
I use the above code to get a PHP file to return all the recipe categories in a database table. The insert -> creates a dynamic menu. the println has confirmed that each menu item is assigned the correct text and recipe ID.
I can click any one of the 19 "category" menu items generated and the "OnMouseClicked:" will call and start getRecipes.
The code for getRecipes is identical to the code shown except that the returned recipes are inserted into the "recipe" menu instead of the "category" menu.
Now it doesn't matter if I click an item in the "Recipe" or "Category" menu ......... any attempt to reuse the HTTPRequest functions will return:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: request reuse not permitted
at javafx.io.http.HttpRequest.start(HttpRequest.fx:1316)
at jim2.categories$categories$Script$1Local$5$1ForPart$3.invoke$(categories.fx:59)
at com.sun.javafx.functions.Function1.invoke(Function1.java:44)
at com.sun.javafx.functions.Function1.invoke$(Function1.java:38)
at javafx.scene.Node.impl_processMouseEvent(Node.fx:2938)
at javafx.scene.Node.preprocessMouseEvent(Node.fx:2967)
at javafx.scene.Scene$MouseHandler.process(Scene.fx:1559)
at javafx.scene.Scene$MouseHandler.process(Scene.fx:1421)
at javafx.scene.Scene.impl_processMouseEvent(Scene.fx:686)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.fx:1016)
at com.sun.javafx.tk.swing.SwingScene$SwingScenePanel.doMouseEvent(SwingScene.java:446)
at com.sun.javafx.tk.swing.SwingScene$SwingScenePanel.mouseClicked(SwingScene.java:454)
at java.awt.AWTEventMulticaster.mouseClicked(Unknown Source)
at java.awt.AWTEventMulticaster.mouseClicked(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Since this is a recipe program you can see that I'm going to have to call the database for data each time a different category or recipe is called.
*QUESTION: What do I have to do to get the HTTPRequest to work repeatly*
Edited by: JWK on Feb 28, 2011 11:54 AM

Answer 1

Exactly what it says; Create a new http request every single time you want to retrieve the data:
//Records data retrieved from the request.
var data : String;
function makeRequest() : Void {
    //Create a new request object every time this function is called.
    var request : HttpRequest = HttpRequest {
        location: "http://en.wikipedia.org/"
        onInput: function(io : InputStream) {
            //Read input to data string and close input stream
    //Make the request connect.
    request.start();
//Get the data
makeRequest();
//Get the data again.
makeRequest();Each individual HttpRequest object is meant to be used once and only once so you need to create a new one each time.