subreports with API

[2005 IR Help]

By: sathya - postsathya

subreports with API

2004-03-15 20:17

pls somebody help

i need to build a report with a subreport

how to pass the parameters and expressions to the subreports

through the master

 

I dont know how to start with the problem

 

Thanks in advance

Sathya

 

 

 

 

By: srini - kapsljava

RE: subreports with API

2004-03-15 20:32

Hi,

 

see the sample programs and xml. u will get the idea of how they r passing the parameters.

 

tell me whether u r using the table data source or database connection.

 

From

srinivas

 

 

 

 

By: sathya - postsathya

RE: subreports with API

2004-03-15 20:40

Thanks for ur reply srinivas

 

I was about to use the table datasource

 

now I ve started to fetch data in two tablemodels that are to be passed to the master report and subreport respectively

I dont know how to interconnect the subreport with tbe main report

 

shall i use the JRDesignSubreports class here?

if it is so where could i pass this object to the mainreport.

 

my snippets are

 

TableModel model = fetcher.fetchData();

JRDataSource dataSrc = new JRTableModelDataSource(model);

JasperPrint print = JasperFillManager.fillReport(jasp,null,dataSrc);

 

now where cud i say about the subreports here

 

pls help me out

 

 

Thanks and regards

sathya

 

 

 

 

By: sathya - postsathya

RE: subreports with API- help me out

2004-03-15 21:48

how could i do it

 

somebody there help me out

 

Thanks in advance

 

 

 

 

By: David Lim - aberrant80

RE: subreports with API

2004-03-15 21:55

You don't need to specify the subreport when filling. Just make sure your main report has a subreport expression that points to the subreport and a data source expression to pass the data source in.

 

 

 

 

By: sathya - postsathya

RE: subreports with API

2004-03-15 22:02

Thanks David

 

Cld i ve any example snippets

 

 

 

 

By: David Lim - aberrant80

RE: subreports with API

2004-03-15 22:07

1. Create instance of JRDesignSubreport

2. Use setExpression to set the <subreportExpression> part of the XML.

3. Use setDataSourceExpression to set the <dataSourceExpression> part of the XML.

4. Set whatever else attributes you want.

5. Add it to a band on the main report.

 

Look up the quick reference on what those expressions are for and do some tests. You'll learn better through error.

 

 

 

 

By: sathya - postsathya

RE: subreports with API

2004-03-15 22:30

1. Create instance of JRDesignSubreport -->

 

JRDesignSubreport subreport = new JRDesignSubreport();

JRDesignSubreportParameter subParam = new JRDesignSubreportParameter();

subParam.setName("Resourceid");

JRDesignExpression exp = new JRDesignExpression();

exp.addFieldChunk("RESOURCEID");

subParam.setExpression(exp);

// add the parameters to the subreport

subreport.addParameter(subParam);

 

IS THE FIRST STEP OK??

 

2. Use setExpression to set the <subreportExpression> part of the XML.-->

 

subreport.setExpression(JRExpression);

 

3. Use setDataSourceExpression to set the <dataSourceExpression> part of the XML.-->

 

exp = new JRDesignExpression(); exp.addParameterChunk("REPORT_DATASOURCE");

// add it to the subreport

subreport.setDataSourceExpression(exp);

 

IS IT RIGHT???

IF IS WRONG HOW TO SET THE EXPRESSION?

 

4. Set whatever else attributes you want.

 

??

5. Add it to a band on the main report.

??

 

 

David ,

 

THANKS FOR SPENDING UR VALUABLE TIME FOR ME DAVID

 

Now i want to know whether i was in a right track

it is so,

 

then how could i define the expression using JRDesignExpression, it contains something chunks, setid

set Name ,setText ,... methods

culd u pls help me out in resolving these things and to define my expression

 

Thanks David

 

 

 

 

 

 

By: srini - kapsljava

RE: subreports with API

2004-03-16 21:58

Hi David,

 

is the code is working correctly or throwing exception..

 

From

srinivas

 

 

 

 

By: sathya - postsathya

RE: subreports with API

2004-03-17 03:23

yeah it doesnot accepts the

expression for the subreportdatasource

and was not even successfully compiled........throws exception