Hi, I have found a minor incompatibility with XMLBeans and Java 1.5 when creating documents with small numbers. XMLBeans uses BigDecimal for xs:decimal elements. The problems is essentially that BigDecimal.toString() now returns exponents (e.g. 1.1E-8) in certain circumstances, particularly with small numbers. The 'E' character is not valid in xs:decimal, so you end up with an invalid xml document. I use BigDecimal.setScale to ensure that my BigDecimal variables don't exceed the precision limits set by my schema. I first noticed this problem when setting the scale on a zero BigDecimal - new BigDecimal(0).setScale(9).toString(), yields "0E-9". The below example shows the problem using a test schema:
<?xml version="1.0" encoding="UTF-8" ?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; xmlns="test" targetNamespace="test"> <xs:element name="test" type="Test"/> <xs:complexType name="Test"> <xs:annotation/> <xs:sequence> <xs:element name="test" type="TestNo" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> <xs:simpleType name="TestNo"> <xs:restriction base="xs:decimal"> <xs:fractionDigits value="9" /> <xs:totalDigits value="18" /> </xs:restriction> </xs:simpleType> </xs:schema> My test program is: ________________________________________________________________________ __ public static void main(String[] args) { TestDocument doc = TestDocument.Factory.newInstance(); Test test = doc.addNewTest(); test.addTest(new BigDecimal(1.2345678923456789).setScale(9 ,BigDecimal.ROUND_HALF_UP))); test.addTest(new BigDecimal(0.0000000111).setScale(9 ,BigDecimal.ROUND_HALF_UP))); test.addTest(new BigDecimal(0).setScale(9 ,BigDecimal.ROUND_HALF_UP))); test.addTest(new BigDecimal(0.000001)); test.addTest(new BigDecimal(0)); ArrayList validationErrors = new ArrayList(); XmlOptions validationOptions = (new XmlOptions()).setErrorListener(validationErrors); if (!doc.validate(validationOptions)) { Iterator iter = validationErrors.iterator(); while (iter.hasNext()) { System.out.println(iter.next()); } } System.out.println(doc.toString()); } ________________________________________________________________________ __ This prints out: ________________________________________________________________________ __ error: decimal: Invalid decimal value: unexpected char '69' error: decimal: Invalid decimal value: unexpected char '69' error: decimal: Invalid decimal value: unexpected char '69' <test xmlns="test"> <test xmlns="">1.234567892</test> <test xmlns="">1.1E-8</test> <test xmlns="">0E-9</test> <test xmlns="">9.999999999999999547481118258862586856139387236908078193664E-7< /test> <test xmlns="">0</test> </test> ________________________________________________________________________ __ The long term solution, I guess, is to use BigDecimal.toPlainString() when creating an xml document within the xml beans code (JavaDecimalHolder.compute_text). However, this would make xmlbeans incompatible with Java 1.4 which I'm sure is not possible. In the short term (i.e. with current xmlBeans), as far as I can see there are two ways around this. 1. Use XMLBeans' generated types to force the string value. However, this rather bloats code as each 'set' becomes 3 lines. For example: interest.setAmt(bigDecimal.setScale(3,BigDecimal.ROUND_HALF_UP)); becomes: AmountOfMoney money = AmountOfMoney.Factory.newInstance(); money.setStringValue(bigDecimal.setScale(3,BigDecimal.ROUND_HALF_UP).toP lainString()); interest.xsetAmt(money); 2. Create a new class that inherits from BigDecimal who's toString calls toPlainString, to restore the Java 1.4 behaviour, as below: public class PlainBigDecimal extends BigDecimal { public PlainBigDecimal(BigDecimal bd) { super(bd.unscaledValue(),bd.scale()); } public String toString() { return super.toPlainString(); } } With this our example becomes: ... test.addTest(new PlainBigDecimal(new BigDecimal(0.0000000111).setScale(9,BigDecimal.ROUND_HALF_UP))); test.addTest(new PlainBigDecimal(new BigDecimal(0).setScale(9,BigDecimal.ROUND_HALF_UP))); ... Which prints: <test xmlns="test"> <test xmlns="">0.000000011</test> <test xmlns="">0.000000000</test> </test> Please let me know if you can think of any better solutions. Kind regards, Ian Jones Visit our website at http://www.ubs.com This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. This message is provided for informational purposes and should not be construed as a solicitation or offer to buy or sell any securities or related financial instruments. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
