I created a simple servlet (code below) and dropped it into Laszlo's tomcat webapps along with ROOT, called /ts
It just paints a single xml string.
I then created an lzx file by copying some stuff from one of the demo files, essentially randomly selected nested views and added a dataset that calls the servlet. Code below.
I then dropped that into my-apps and called it. Gads! It worked. Sortof. First, the string only paints the first dozen or so characters. Change the font size and it paints more or less characters, as if there is some wall it is hitting. I dunno about that, but that's not my question here.
My question is this. The dataset should represent a dynamic query to the servlet. Where it says:
"http://127.0.0.1:8080/ts/"
it should offer up the requested dataset, e.g.
http://127.0.0.1:8080/ts/foo
where "foo" represents a particular class/object
An alternative might be
http://127.0.0.1:8080/ts/?foo
That is because the display might have been a request from a hyperlink in a different lzx setting, or from another website entirely.
That is, I looked around and, on first scan, saw little that would tell me how to form a dynamic call to an lzx object which needs to know which specific dataitem to fetch from the dataset, which in this case, is a servlet. The dataset must be constructed dynamically.
How is it possible to gain access to the httprequest object from lzx in order to determine which data to present? It's probably in there somewhere but I missed it.
Thanks,
Jack
Servlet
public class TsServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/xml");
PrintWriter out = response.getWriter ();
out.print("<data><msg>");
out.print("TopicSpaces Servlet at your service!");
out.print("</msg></data>");
out.flush();
out.close();
}
LZX
<canvas title="Test Canvas" bgcolor="#1E3A49" width="830" height="600" fontsize="8">
<dataset name="dset"
autorequest="true" type="http"
src="" href="http://127.0.0.1:8080/ts/">http://127.0.0.1:8080/ts/" />
<view name="frame" width="80%" height="80%" bgcolor="#354D5B" >
<view x="50" y="10" name="top" width="100%" height="100"
datapath="dset:/data">
<text font="helmet" fontsize="14" datapath="msg/text()"/>
</view>
</view>
</canvas>
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