classcast error [double to BigDecimal] in JR 4.1.2.3

[yamanko]

ClassCastException was throw when run JRXML report in JR 4.1.2.3, this JRXML report is designed by JR 3.7.1, and no double type field or variable in the whole report, and this report is exported to PDF successfully in JR 3.7.1, but got below error in JR 4.1.2.3. does anyone met similar error?

i checked the variables in this report, if i remove all variables whose calculation is SUM or AVERAGE, this report can be run in 412 successfully too. confused!! does that mean field type is changed to double from BigDecimal when SUM or AVERAGE this field?

Exception in thread "main" java.lang.ClassCastException: java.lang.Double cannot be cast to java.math.BigDecimal
    at net.sf.jasperreports.engine.fill.JRBigDecimalSumIncrementer.increment(JRBigDecimalIncrementerFactory.java:303)
    at net.sf.jasperreports.engine.fill.JRAbstractExtendedIncrementer.increment(JRAbstractExtendedIncrementer.java:42)
    at net.sf.jasperreports.engine.fill.JRCalculator.estimateVariables(JRCalculator.java:182)
    at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:833)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1439)
    at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:127)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:903)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:813)
    at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:58)
    at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:417)

[yamanko]

seems JR371 version treat field or variable as BigDecimal, while 4123 or 413 treat them as Double..

uhm...

[yamanko]

371 code

Class typeClass = getTypeClass(type);
        Object javaValue;
        try
        {
            javaValue = Context.jsToJava(value, typeClass);
        }

 

4123 code

Object javaValue;
        try
        {
            javaValue = Context.jsToJava(value, Object.class);
        }

[yamanko]

still have this class cast error in latest JR version 4.5.0