Dynamic Jasper reports Help

[pnvswamy]

I want to generate the Reports with dynamic columns.I dont know how to use......Please help me some guide lines.

[Teodor Danciu]

Hi,

If you have dynamic columns, it means your report template actually changes at runtime.

You can create dynamic report templates at runtime by using the JasperReports API directly like shown in the /demo/samples/noxmldesign sample provided with the project distribution file.

Depending on the actual structure of the document, maybe a crosstab could also help.

In the future we'll probably have a true table component in JasperReports, but for now you have to try the above mentioned solutions.

 

I hope this helps.

Teodor

 

[vembu]

Hi Teodor,

 

Thanks for guiding/supporting us.

is there any code/sample developed for table component. if so can u post the link.

 

As well u have mentioned: /demo/samples/noxmldesign for dynamic column header & field.

how can we say it as dynamic since the fields are hard coded. Is it possible for us to fetch the fields as array and by hadling the loop is it possible to form the column header & detail band with that array dynamically.

if so can you please post me that code sample

 

Code:

i am expect something like getting field count dynamically & form the column header , detail dynamically  using the loop,

like the one below for column header:

for (i=0; i<count(total); i++){

field.setName(array[i]);		field.setValueClass(java.lang.String.class);		jasperDesign.addField(field);

}

 

for detail,

var leftPosition = 0;

for (i=0; i<count(total); i++){

textField = new JRDesignTextField();
        textField.setX(leftPosition);
        textField.setY(4);
        textField.setWidth(50);
        textField.setHeight(15);
        textField.setHorizontalAlignment(JRAlignment.HORIZONTAL_ALIGN_RIGHT);
        textField.setStyle(normalStyle);
        expression = new JRDesignExpression();
        expression.setValueClass(java.lang.String.class);
        expression.setText("$F{array}");
        textField.setExpression(expression);
        band.addElement(textField);

 

leftPosition = leftPosition+100;

}

Post Edited by vembu at 21/07/2009 12:24

[Teodor Danciu]

Hi,

 

You can use loops to iterate through fields and all the stuff you want to do. You just have to try it, without asking for prior confirmation from us.

 

Good luck!

Teodor