18 Feb
2009
18 Feb
'09
6:38 p.m.
Hi Dan,
On Feb 18, 2009, at 5:46 PM, Dan Miron wrote:
Thomas Mortagne wrote:
Can you explain in detail what will be the role of the xwiki-chart
module?
If it's about generating PNG doesn't jfreechart do this already? Is it
about wrapping jfreechart with an xwiki api? If so then how do you
provide a generic api that'll work with any graphing framework?
Thanks
-Vincent
On Thu, Feb 5, 2009 at 14:34, Dan Miron
<dan.miron(a)xwiki.com> wrote:
I'm thinking of creating a new component responsible for generating
the
actual chart as PNG image which to replace the ChartPlugin. It would
be
similar to the old plugin but it will not use the ChartParams class
for
passing the parameters. I'm thinking of placing it platform/core and
calling it XWiki-Chart.
Jerome also suggests using this new component for the old radeox chart
macro. Hi guys,
In order to implement the chart macro
(http://jira.xwiki.org/jira/browse/XWIKI-2883) , i propose the
following:
- Create a new TableBlockDataSource which implements the
com.xpn.xwiki.plugin.charts.source.DataSource and which will take
data
from a table contained within a Wiki2.0 document.
- Use the existing ChartPlugin for aquiring this new data source and
generate the graph.
IMO macro should not use old api/plugins, if a chart component is
needed that the chart macro would used we should create it. In a
general manner I are trying to never use anything from pmd xxwiki-
core
in component but translate and redesign useful xwiki-core code into
new components (like observationmanager, the rendering it self,
etc.).
Please let me know what you think about these issues.
Tnx,
Dan
>> This new datasource, in order to be compatible with the chartPlugin,
>> gets its parameters via a Map<String, String>. So I'm thinking of
>> passing the current document and the table number as strings
>> encoded in
>> such a Map and then, in the datasource parsing the document and
>> getting
>> its DOM tree and then extracting the data from it.
>>
>> What do you think about this approach?
>>
>> Tnx,
>> Dan