Master Report: 2 SubReport, 2 DataSource

[2005 IR Help]

By: cbaeza - cbaeza

Master Report: 2 SubReport, 2 DataSource

2005-12-15 12:23

Hi,

I try do make a Master Report with 2 SubReport and each SubReport is composed by 2 different XML DataSource:

 

iReport can use many SubReport (and subsubreport), but the same one Connection DataSource (XML for my Example).

 

With a unique XML DataSource iReport it works very well, but:

- How I can pass to each SubReport different XML DataSource ???

 

 

Master_Report ---- SubReport_1 (XML DataSource_1)

|

---- SubReport_2 (XML DataSource_2)

 

 

 

Thanks in Advanced,

 

Carlos

[email protected]

 

 

 

 

By: Chris Germano - netslayer

RE: Master Report: 2 SubReport, 2 DataSource

2005-12-15 15:29

i've never done this before. i'd check the

Connection / Database Expression stuff under the Subreport properties.

 

 

 

 

By: C-Box - c-box

RE: Master Report: 2 SubReport, 2 DataSource

2005-12-16 02:11

Just pass your two datasources from outside to the masterreport and use them as Parameter within each subreports datasource-expression:

 

$P{SubDatasource1}

$P{SubDatasource2}

 

quite easy... I have up to 9 different datasources linked to several subreports... works great.

 

hth

C-Box

 

 

 

 

By: cbaeza - cbaeza

RE: Master Report: 2 SubReport, 2 DataSource

2005-12-16 05:40

Thank C-Box,

You can explain with more details the definition of the parameter.

$P{SubDatasource1}

- Parameter class Type

- default Value Expression

- Parameter Description

 

Also, my XML DataSource is as:

XML DataSource:

===============

Name: MyXML_Data_Source

XML File: ./file.xml

Select Expression: /document

 

Thank an advanced :)

Carlos

 

 

 

 

By: C-Box - c-box

RE: Master Report: 2 SubReport, 2 DataSource

2005-12-16 10:18

Well, I don't have any experiences with XML-DataSources (as I remember right, this kind of datasource is very slow when there are much data inside) ... but as the principle is the same...

 

my parameters are of class "JRDataSource" (ok I implemented my own one... but this extends the JRDataSource)

DefaultValue and Description is not needed.

 

So just create your datasources either BEFORE and pass it as Parameter as I described or perhaps you can also use an expression like "new JRXmlDataSource("XmlFile","YourNodeForSubReport1")" ... note: I DON'T KNOW ANYTHING ABOUT THE XML-DATASOURCE - just abstract it as you would do it for a single report)

 

hth

C-Box