Name: erR10175 Date: 12/26/2003


 
  The following method of the class javax.xml.datatype.XMLGregorianCalendar
  
public BigInteger getEonAndYear()

returns wrong values for years outside the range from -10^9 to 10^9.

According to the javadoc of the class, the field Year is capable to store
arbitrary big integer years. So, it should be possible to set and get Year to
values greater than 10^9 and less than -10^9. The method getEonAndYear()
is expected to return exactly what is set by method setYear(BigInteger year)
or by createDateTime(BigInteger year, ...).

This bug affects new tests in JCK 1.5 (not integrated yet)
    api/javax_xml/datatype/XMLGregorianCalendar/index.html#GetSetCreate[CreateDateTime002]
    api/javax_xml/datatype/XMLGregorianCalendar/index.html#GetSetCreate[GetEon001]
    api/javax_xml/datatype/XMLGregorianCalendar/index.html#GetSetCreate[GetEonAndYear001]

The bug is found in jdk1.5.0/beta/b32.

To reproduce the bug compile and run the following code as shown
in the log below.
------------------------------------------ test.java
import javax.xml.datatype.XMLGregorianCalendar;
import java.math.BigInteger;

class test {
    static final BigInteger BILLION = new BigInteger("1000000000");
    static final BigInteger mBILLIONo = new BigInteger("-1000000001");
    public static void main(String [] args) {
        XMLGregorianCalendar c
            = XMLGregorianCalendar.createDateTime(BILLION, 1, 1, 0, 0, 0, null, 0);
        BigInteger year = c.getEonAndYear();
        if (!BILLION.equals(year)) {
            System.out.println("Failed: returned " + year
                             + ", expected " + BILLION);
        } else {
            System.out.println("OK: returned " + year);
        }
        c.setYear(mBILLIONo);
        year = c.getEonAndYear();
        if (!mBILLIONo.equals(year)) {
            System.out.println("Failed: returned " + year
                             + ", expected " + mBILLIONo);
        } else {
            System.out.println("OK: returned " + year);
        }
    }
}
----------------------------------------------------

------------------------------------------------ log
$javac test.java && java -cp . -showversion test
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b32, mixed mode)

Failed: returned 1, expected 1000000000
Failed: returned -2, expected -1000000001
----------------------------------------------------

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