Dataset Context ??

[mm972]

Hi All,
in Jasper Studio, I created 2 Report with Table using DATASET
but i don't know why,  only in the second Report , when I open the EXPRESSION EDITOR, i view the DATASET under the FIELDS and Variables Context (see image)
i how is possible to use the Dataset variable in the first report???? 
is possible to change the context or i wrong something when i Create the Report..??

thanks in advance
Max

 

[Massimo Rabbi]

Hi,
indeed there could be places where the expression context is wrong. If you find these open a bug in the dedicated tracker.

Anyhow since you not detailed well the exact steps you took, I can only assume from your second screenshot that you opened the expression editor trying to modify the expression associated to a conditional style. This is one of the cases where it is possible to see all fields/params/etc. related to the whole report datasets. That's the reason why you get this "special" visualization.

Regards,
Massimo.

 

[mm972]

Ciao Massimo,

dal tuo profilo presumo che sia Italiano anche tu, anche io mi chiamo Massimo,

volevo specificare che nel dettaglio le visualizzazioni si riferiscono a 2 Report diversi creati in modo diverso uno dall'altro, visto che sono alle prime armi con Jasper Studio, non mi è ancora molto chiaro il contesto delle variabili e dei campi, come mai in un report posso accedere ai campi e alle variabili sia del MAIN DATASET che di quello creato successivamente, mentre nell'altro sembra che pur avendo i DATASET nel report non sono utilizzabili i campi nell'Expression Editor..?? sbaglio qualcosa quando creo il report???

Grazie Massimo

 

[Massimo Rabbi]

Hi Massimo,

yes I'm Italian too. But please keep writing in English so also other people can benefit from this discussion ;-)

 

About the expression context it depends on where you are opening the editor and for example which dataset is associated to a specific component. When you create a table or a chart with a specific dataset associated it's pretty normal to see during its configuration the expression editor opening with the specific dataset context.

 

From what you wrote, I suppose you never used iReport too, because the expression context and variables/fields/parameters visibility works the same. If you are a newbie with JasperReports and Jaspersoft Studio, please consider to give a look to the tutorial sections and user guides. This will help you understand how to properly create reports depending on your needs.

 

After that if you face a possible bug, feel free to use the tracker to open a dedicated issue.

 

Regards,

Massimo.