JASPERPRINT TO PDF

Luckily thanks to the flexibility of JasperReports this can easily be achieved. There are some small limitations, which we will review, however for the most part this is an easy and effective technique to give you very advanced functionality in the server. Whats the difference? JasperDesign represents the report design in a "editable" meaning there are a lot of setters available to modify the state JasperReport also represents the report design, however it has been compiled and validated and is ready use with the JasperFillManager to create a JasperPrint object. The JasperReport object has less setters available making it more difficult to change its state after it has been created.

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Luckily thanks to the flexibility of JasperReports this can easily be achieved. There are some small limitations, which we will review, however for the most part this is an easy and effective technique to give you very advanced functionality in the server.

Whats the difference? JasperDesign represents the report design in a "editable" meaning there are a lot of setters available to modify the state JasperReport also represents the report design, however it has been compiled and validated and is ready use with the JasperFillManager to create a JasperPrint object.

The JasperReport object has less setters available making it more difficult to change its state after it has been created. To see how to create a JasperPrint please review this: The issue with creating a JasperPrint object is there is not a clean way to add this functionality to the server.

So for the purposes of this acticle we will be focusing on the JasperDesign approach. For this example what we will do is that the getJasperDesign method from the NoXmlDesignApp sample object and put it into its own class.

This will give us a class where we can call a static method to get a report design object. The change we are going to make it we are going to modify the signature of the method to also take a list of parameters. The Flexibility of SubReports The nice thing about subreports is their subreport expression, this is how the report design in located, can be of type JasperReport.

The expression in this case can then be a call to the Java class created in the previous step. So basically what we will have in a main report that is just a wrapper and a subreport that creates the report design on the fly.

Values captured from the user upon report execution can be passed into the call of the helper class. The data source for the subreport can be obtained from the parent report or defined in run time. Deploying Everything to the Server Once we have it all completed it can be deployed to the server giving you a very powerful and flexible report.

Limitations The big limitation here is you will be able to design the subreport to be what you want, however it is stuck within the main report. There are potential ways to work around this, however they require customization of the server code and are beyond the scope of this article. Conclusion This technique is a great example of one of the benifits of having such a power tool as JasperReports powering JasperReports server.

I hope this will be of value to you. Happy reporting!

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Jasper Report - View & Print Reports

Viewing and printing of the Jasper documents will be discussed in this chapter and exporting will be discussed in the next chapter i. It is a swing based component and other Java applications can integrate this component without having to export the documents to other formats in order to be viewed or printed. The net. JRViewer class represents this visual component. This class can also be customized as per the application needs, by sub classing it. JasperReports also has a Swing application, which uses the visual component for viewing the reports. This Swing application is implemented in the class net.

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