Java functions in JasperReports

[aihtnyc]

Hi!

I´m changing a report to JasperReports. It was made in other IDE with a Procedure that executes every row that DataSet read.

I´m trying to change that Procedure to Java language to have a better usability and maintainability, but i´ve been looking all the post and testing all the answers and it didin´t work for me.

¿How can I embed my java functions into my report?

Thanks.

PD: I´ve just test this :  http://community.jaspersoft.com/questions/527056/can-we-use-java-functions-ireport

[rajesh.sirsikar]

Hi aihtnyc,

You can create scriplets and call them in your report execution to use any user defined class. For more info check this blog.

http://ankurthetechie.blogspot.in/2014/01/all-you-want-to-know-about-scriptlets.html

Thanks,

Rajesh S

[aihtnyc]

Thanks, but Scriptlets doesn´t work too.

Is it possible to fix it?

I´ve got this next error:

CLASS FILE EDITOR

Source not Found

 The JAR of this class file belongs to container 'JasperReports Library' which does not allow modifications to source attachments on its entries.

// Compiled from JRDefaultScriptlet.java (version 1.6 : 50.0, super bit)

public class net.sf.jasperreports.engine.JRDefaultScriptlet extends net.sf.jasperreports.engine.JRAbstractScriptlet {

  

  // Method descriptor #6 ()V

  // Stack: 1, Locals: 1

  public JRDefaultScriptlet();

    0  aload_0 [this]

    1  invokespecial net.sf.jasperreports.engine.JRAbstractScriptlet() [8]

    4  return

      Line numbers:

        [pc: 0, line: 41]

        [pc: 4, line: 43]

      Local variable table:

        [pc: 0, pc: 5] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

  

  // Method descriptor #6 ()V

  // Stack: 0, Locals: 1

  public void beforeReportInit() throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 51]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

  

  // Method descriptor #6 ()V

  // Stack: 0, Locals: 1

  public void afterReportInit() throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 59]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

  

  // Method descriptor #6 ()V

  // Stack: 0, Locals: 1

  public void beforePageInit() throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 67]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

  

  // Method descriptor #6 ()V

  // Stack: 0, Locals: 1

  public void afterPageInit() throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 75]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

  

  // Method descriptor #6 ()V

  // Stack: 0, Locals: 1

  public void beforeColumnInit() throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 83]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

  

  // Method descriptor #6 ()V

  // Stack: 0, Locals: 1

  public void afterColumnInit() throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 91]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

  

  // Method descriptor #24 (Ljava/lang/String;)V

  // Stack: 0, Locals: 2

  public void beforeGroupInit(java.lang.String groupName) throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 99]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

        [pc: 0, pc: 1] local: groupName index: 1 type: java.lang.String

  

  // Method descriptor #24 (Ljava/lang/String;)V

  // Stack: 0, Locals: 2

  public void afterGroupInit(java.lang.String groupName) throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 107]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

        [pc: 0, pc: 1] local: groupName index: 1 type: java.lang.String

  

  // Method descriptor #6 ()V

  // Stack: 0, Locals: 1

  public void beforeDetailEval() throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 115]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

  

  // Method descriptor #6 ()V

  // Stack: 0, Locals: 1

  public void afterDetailEval() throws net.sf.jasperreports.engine.JRScriptletException;

    0  return

      Line numbers:

        [pc: 0, line: 123]

      Local variable table:

        [pc: 0, pc: 1] local: this index: 0 type: net.sf.jasperreports.engine.JRDefaultScriptlet

}

[hozawa]

Attach your source code. It seems like you7re doing something fundamentally different.

[aihtnyc]

full source code?

[hozawa]

No. Just a simple few lines sample code to show us what you're trying to do.

 

A sample scriplet can be found in the pages below. Try them before writing your own.

http://www.tutorialspoint.com/jasper_reports/jasper_report_scriptlets.htm

http://jasperreports.sourceforge.net/sample.reference/scriptlet/

 

FYI:There's actually several ways to add codes: (1) Add to the JasperReports library (2) Add to the JasperReports Studio (using scriplets).