How can I get the report data by customizer class

[hades2012]

 Hi Guys:

How can I get the report data via customizer class?

I can use the JRChart instance provided by interface to get the dataset and use the method getSeries().

But I can only get some static data.

e.g. 

select name from teacher;

and I can only get the parameter's name which is 'name'.

But how can I get all of name of teacher?Does anyone have any idea?/tools/fckeditor/editor/images/smiley/msn/teeth_smile.gif