Have you looked at FINS? http://www.lucamorandini.it/fins/faq.html
2009/8/6 sh kh <techlogs...@yahoo.com> > I'm following the Cocoon 2.2 tutorial. I created a dynamic chart with a > java class implementing JFreeChart. I want to view the rendered chart in > cocoon. I'm using flowscript and map:read, but no luck. I get a message > saying the image contains errors when viewing src in Firefox ( I tested that > the chart does show up fine if I write it to an external file...I could link > to this file but would prefer not to write the chart to the disk). > > I followed the approach from a previous post in the mailing list ( > http://article.gmane.org/gmane.text.xml.cocoon.user/57199) > > Here is the relevant method to return InputStream in MyClass > > public MyClass { > > public static InputStream getInputStream() { > > (Code to create chart omitted...) > > ByteArrayOutputStream out = new ByteArrayOutputStream(); > JFreeChart chart = ChartFactory.createPieChart("Pie Chart", dataset, true, > true, false); > ChartUtilities.writeChartAsPNG(out, chart, 500, 300); > InputStream is = new ByteArrayInputStream(out.toByteArray()); > return is; > } > } > > Flowscript > > function demo() { > var inputstream = MyClass.getInputStream(); > cocoon.sendPage("screens/spring-bean", > {"inputstream": inputstream}); > } > > Sitemap: > > <map:pipeline> > <map:match pattern="spring-bean"> > <map:call function="demo"/> > </map:match> > </map:pipeline> > <map:pipeline id="demo-internal" internal-only="true"> > <!-- This pipeline is invoked by the above flowscript. --> > <map:match pattern="screens/spring-bean"> > <!-- doesn't make a difference if I remove type="image" from map:read --> > <map:read type="image" src="module:flow-attr:inputstream" > mime-type="image/png" /> > </map:match> > </map:pipeline> > > > Any hints will be appreciated. Thanks. > > Shailender > >
