Passing parameters in formula field  to main report, Java, Crystal Reports , crjava-runtime_12.2.215

Posted on 2013-02-02
Medium Priority
Last Modified: 2013-03-16
I am unable to pass the value in the formula field in the crystal report though java.
there is a class with the name "FormulaFieldController" but there is no method in that by which we can set the values in the formula field.

Since the report is already created with few formula fields and are calculated on the basis of the parameter passed.

Please teach me how to send the value in the formula field?

Source code is given below

<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>

<%@page import="com.crystaldecisions.reports.sdk.*"%>
<%@page import="com.crystaldecisions.sdk.occa.report.lib.*"%>
<%@page import="com.crystaldecisions.sdk.occa.report.data.*"%>
<%@page import="com.crystaldecisions.report.web.viewer.*"%>
<%@page import="com.crystaldecisions.reports.sdk.*"%>

      String REPORT_NAME = "Report1.rpt";
      //Refer to the Viewers SDK in the Java Developer Documentation for more information on using the CrystalReportViewer
      ReportClientDocument reportClientDoc = new ReportClientDocument();
      reportClientDoc.open(REPORT_NAME, 0);
      CrystalReportViewer viewer = new CrystalReportViewer();
      Object reportSource = session.getAttribute("reportSource");

      //Render the report.
      viewer.processHttpRequest(request, response, getServletConfig()
                  .getServletContext(), null);
Question by:Rocking
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LVL 18

Expert Comment

ID: 38846788
Create a parameter and use it inside the formula. By setting the parameter value you can change the behavior and the result of the formula.
LVL 101

Expert Comment

ID: 38846980
Why do you think you need to change the formula?


Author Comment

ID: 38848050
Why do you think you need to change the formula?

I don't need to change the formula,what i need is formula value is displayed as it is passed from the screen i.e jsp file.
Like for instance we need to show the title of the application which depends upon the locale of the client.There is a formulate field with the name "@title",just need to set the value in this field.

Create a parameter and use it inside the formula.
I cannot modify the report layout nor added parameter in the same.

Reg parameter i am using on filed whose value i set though java code,even though i am setting the default value,the prompt message always appears asking for the value.
How can i avoid such prompt in cr viewer?
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LVL 101

Expert Comment

ID: 38848714
TO avoid the parameter prompt you have to pass the values from the application.  
I don't see the code that is setting the values

Default values are just that default and are displayed as the default value in the parameter screen.  They cab be accepted or changed by the user.

There may be an option on the call to the viewer to disable the prompts.

In VB6 methods you can set the formulas with a statement like

  crRptObj.Formulas(1) = " 'Text You Want to see' "

In general if you want a formula to show a value passed in by the user it is easier to use a parameter and just display it.


Author Comment

ID: 38851747
In the view i couldn't find any such method to block the prompt message.
I am sending the parameters using the below code

ParameterFieldController paramController = reportClientDoc.getDataDefController().getParameterFieldController();

Yes your are correct,in vb it is possible to set the value of the formula field through code.

In general if you want a formula to show a value passed in by the user it is easier to use a
parameter and just display it.

Since i cannot modify the code therefore i need to send the value using the formula field.
Please let me know if it is possible.
LVL 101

Expert Comment

ID: 38853608
This claims to have a sample for doing it



Author Comment

ID: 38855980
I have already gone through the above link before and found the sample for creating the formula field sample code.

But what i need is to pass to set value in the existing formula field in the report?

With the help of below code i am able to get the object of the formula field from the report file

 DataDefController dataDefController = clientDoc.getDataDefController();
 IField field = dataDefController.findFieldByFormulaForm( "{table.field}" );

As per the above code it returns the object of "IField ".

But unable to find out how to set the text value?
LVL 18

Expert Comment

ID: 38856280
him121, I don't know how is in Java but in .NET ReportDocument provides a method SetParameterValue. If you set the parameter values correctly the parameter dialog  will be not shown.
My advice is to resolve your problem with the parameters and use a parameter value to set the report behaviour instead of trying to change a formula.

Expert Comment

ID: 38857087
LVL 101

Expert Comment

ID: 38858145
Try something like

 field  =  "5"

What do you want to set the formula to?


Accepted Solution

Rocking earned 0 total points
ID: 38860427
I had tried but no luck.
Since the return type of the formula object is of "IField " 

 DataDefController dataDefController = clientDoc.getDataDefController();
 IField field = dataDefController.findFieldByFormulaForm( "{table.field}" );

and there is no such method in IField  to set the text,however there is such method in FormulaField class. Please refer below url


I want to know how can i set the text in FormulaField?

Author Closing Comment

ID: 38991473
No reply on this question

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