[daisy] Gettings contents of documentBasket on other pages

[Bruno Dumon]

On Sun, 2007-04-29 at 14:43 +0200, Vincent Mouton wrote:
> Hello,
> 
> I was wondering if there's a way (an ext for example) to get the contents of
> the document basket on other pages of a site, besides the /documentBasket/**
> pages.
> I don't need the entire documents. The number of documents, or their
> name/docId is enough.
> 
> I know how to create an ext, but I can't seem to find a way to pull the
> contents of the docbasket in.
> 

Rather than going through the DocumentBasketApple, this approach might
be simpler.

Create some flowscript like this:

importClass(Packages.org.outerj.daisy.frontend.components.docbasket.DocumentBasketHelper);

function showBasketSize() {
  // the false argument means the basket instance should not be created
  // if it does not exist yet
  var documentBasket = DocumentBasketHelper.getDocumentBasket(cocoon.request, false);

  var numberOfDocs = 0;
  if (documentBasket != null) {
    numberOfDocs = documentBasket.size();
  }

  // and then pass that to a pipeline through the viewData
  var viewData = {};
  viewData["documentBasketSize"] = numberOfDocs;
  sendPage("BasketSizePipe", viewData);
}

The sitemap could be something like this:

<map:match pattern="basketSize">
  <map:call function="showBasketSize"/>
</map:match>

<map:match pattern="BasketSizePipe">
  <map:generate type="jx" src="page.xml"/>
  <map:serialize type="xml"/>
</map:match/>

and page.xml could look like:

<div>
Number of documents in basket: ${documentBasketSize}
</div>

Instead of passing just the size, you could of course pass the complete
DocumentBasket object.

I havn't tested any of the above, so there might be typos in there :-)

-- 
Bruno Dumon                             http://outerthought.org/
Outerthought - Open Source, Java & XML Competence Support Center
bruno at outerthought.org                          bruno at apache.org