Dynamic querystring in JRXML [closed]

Answer 1

JasperDesign helped me to solve the problem of building dynamic query on Jrxml file.

To build the Dynamic SQL, I was using the Squiggle(Google Code) to build the SQL dynamically. Thanks jeff

Answer 2

JasperDesign actually lets you modify portions of your jrxml document. So say you have a package "reports" where you store your report built either by hand or by a tool like iReport. As long as your query is defined in the tag <queryString> the following will work allowing you to change the query on the fly:

try {
    String fileName = getClass().getClassLoader().getResource("com/foo/myproject/reports/TestReport.jrxml").getFile();
    File theFile = new File(fileName);
    JasperDesign jasperDesign = JRXmlLoader.load(theFile);

    //Build a new query
    String theQuery = "SLECT * FROM myTable WHERE ...";

    // update the data query
    JRDesignQuery newQuery = new JRDesignQuery();
    newQuery.setText(theQuery);
    jasperDesign.setQuery(newQuery);

    JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
    Connection conn = MyDatabaseClass.getConnection();
    JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, null, conn);
    JasperViewer.viewReport(jasperPrint);
} catch (Exception ex) {
    String connectMsg = "Could not create the report " + ex.getMessage() + " " + ex.getLocalizedMessage();
    System.out.println(connectMsg);
}

With something like this you can create a member variable of your class that holds the new query and build it with whatever user constrains desired. Then at view time just modify the design.

-Jeff

Answer 3

I've done it using stored procedures which are just fine for these kinds of stuff. Otherwise you may switch to Java. Just grab the data from the database and according to the user provided parameters filter it, group it and send as a collection of beans to the Jasper report which will do the rendering.