Problems with java.lang.Double in a Pojo

Question

Hi!
I'm getting some problems with a Double (wrapper class) in a sub-report related with a Pojo.
The exception has more than 100 lines.
It's starts with:
at com.crystaldecisions.sdk.occa.report.application.ds.a(Unknown Source)
     at com.crystaldecisions.sdk.occa.report.application.ReportSource.a(Unknown Source)
     at com.crystaldecisions.sdk.occa.report.application.ReportSource.a(Unknown Source)
     at com.crystaldecisions.sdk.occa.report.application.PrintOutputController.if(Unknown Source)
     at com.crystaldecisions.sdk.occa.report.application.PrintOutputController.export(Unknown Source)
     at com.crystaldecisions.sdk.occa.report.application.PrintOutputController.export(Unknown Source)
     at br.inf.teorema.javautils.util.CrystalReportsUtils.export(CrystalReportsUtils.java:520)
Caused by: com.crystaldecisions.sdk.occa.report.application.b6: Valor nulo inesperado localizado para o membro Produto.getAliquotaICMS. (UNEXPECTED NULL VALUE ... )
at com.crystaldecisions.sdk.occa.report.application.b6.a(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.de.a(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.de.if(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.de.getDouble(Unknown Source)
and ends with:
[JRCCommunicationAdapter]  detected an exception: Erro inesperado do conector do banco de dados (UNEXPECTED ERROR WITH DATABASE CONNECTOR )
     at com.crystaldecisions.reports.queryengine.Row.char(Unknown Source)
     at com.crystaldecisions.reports.queryengine.Row.getValue(Unknown Source)
     at com.crystaldecisions.reports.datalayer.a$d.getValue(Unknown Source)
     at com.crystaldecisions.reports.saveddata.saveddata.SavedData.a(Unknown Source)
     at com.crystaldecisions.reports.saveddata.a.a(Unknown Source)
     at com.crystaldecisions.reports.saveddata.a.a(Unknown Source)
     at com.crystaldecisions.reports.basicdataengine.a.p(Unknown Source)
     at com.crystaldecisions.reports.basicdataengine.a.a(Unknown Source)
It occurs when my Double has null value. When I put "0.0", there are no problems.
Anyway, in specifics contexts, null != 0.0.
I think it's a bug. Someone encountered the same problem?

Answer 1

Sorry for my insistence, but this problem occurs only for me?
I will explain better.
If I have a report that show the value of a Double field, the getter method should be:
public Double getMyField() {
    return myField;
But if myField == null, I can't generate the report.
So, I did:
public Double getMyField() {
    if (myField == null) {
        myField = 0.0d;
    return myField;
I wish don't need to do this correction in getter method.
CR do not works this way with Double?
I have tested, and String works fine.