Hi,
Since two people have asked me for copies, I thought I would just post
the relevant bits of code for my Xtile 4.0 adaptation here. I make no
claims to be a Tapestry expert, so there may well be better ways of
doing this. In fact, there are a couple of lines I don't really
understand, but they seem to work, so I left them in :>) Anyway, for
what it is worth, here is what I did (Java 1.5, obviously):
In the XTileService:
public void service(IRequestCycle cycle) throws IOException {
WebRequest request =
cycle.getEngine().getInfrastructure().getRequest();
String componentPageName =
request.getParameterValue(ServiceConstants.PAGE);
String componentId =
request.getParameterValue(ServiceConstants.COMPONENT);
IPage componentPage = cycle.getPage(componentPageName);
IComponent component =
componentPage.getNestedComponent(componentId);
if (!(component instanceof IXTile))
throw new ApplicationRuntimeException("Incorrect
component type: was " + component.getClass()
+ " but must be " +
IXTile.class, component, null, null);
IXTile searcher = (IXTile) component;
/* do not squeeze on input */
cycle.setListenerParameters(request.getParameterValues(ServiceConstants.
PARAMETER));
searcher.trigger(cycle);
/* do not squeeze on output either */
Object[] args = cycle.getListenerParameters();
String strArgs = generateOutputString(args);
OutputStream out =
cycle.getEngine().getInfrastructure().getResponse().getOutputStream(
new ContentType("text/xml"));
out.write(strArgs.getBytes("utf-8"));
}
In Xtile:
public Map<String, String> getScriptSymbols() {
WebRequest request =
getPage().getEngine().getInfrastructure().getRequest();
Map<String, String> symbols = new HashMap<String,
String>();
symbols.put("sendFunctionName", getSendName());
symbols.put("receiveFunctionName", getReceiveName());
symbols.put("receiveFunctionName", getReceiveName());
symbols.put("errorFunctionName", getErrorName());
symbols.put("disableCaching", getDisableCaching() ?
"true" : null);
Map<String, String> parameters = new HashMap<String,
String>();
parameters.put(ServiceConstants.SERVICE,
XTileService.SERVICE_NAME);
parameters.put(ServiceConstants.PAGE,
getPage().getPageName());
parameters.put(ServiceConstants.COMPONENT,
this.getId());
ILink link = new
EngineServiceLink(getPage().getRequestCycle(), request.getRequestURI(),
"UTF-8",
new URLCodec(), request, parameters,
true);
symbols.put("url", link.getURL());
return symbols;
}
The rest of the code stays the same.
I had some problems with the script symbols - internally, Tapestry seems
to be creating nested maps from the symbols, so the ognl functions were
returning null. I hacked this in the Tapestry source by adding searches
for baseSymbols.sendFunctionName etc if sendFunctionName returned null.
I'm not sure if this is a bug in Tapestry 4.0 - I haven't had time to
track it down properly. If the function names in the generated
JavaScript are empty (as they were when I tried to use the current
version of Xtile with 4.0), then maybe it is a Tapestry bug, and I'll
gladly post details of my hack, in case that helps track it down.
Best wishes
John
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