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https://issues.apache.org/jira/browse/XMLBEANS-343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12523093
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Wing Yew Poon commented on XMLBEANS-343:
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XMLBeans does have to call get on the Calendar fields.
> Using java.util.Calendar with XmlBeans properties causes Calendar object to
> be modified
> ---------------------------------------------------------------------------------------
>
> Key: XMLBEANS-343
> URL: https://issues.apache.org/jira/browse/XMLBEANS-343
> Project: XMLBeans
> Issue Type: Bug
> Affects Versions: Version 2.3
> Environment: Apache XmlBeans version 2.3.0-r540734
> J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT enabled)
> J9VM - 20060501_06428_lHdSMR
> JIT - 20060428_1800_r8
> GC - 20060501_AA
> Reporter: J Blaufuss
> Priority: Minor
> Attachments: dateElementSchema.xsd, Test2.java
>
>
> A java.util.Calendar object is modified after being passed to a XmlBeans
> object setter method. Specifically, if a field is cleared on the Calendar
> before being passed in, it may be uncleared by the setter. I believe this
> behavior is incorrect, as my expectation is that XmlBeans will not tamper
> with the data that it's given. For an example, see below.
> The effect of this is if your schema specifies an element with type xs:date,
> but for whatever reason you cannot or do not want to have the time zone
> appear in your xml, you have to explicitly clear the ZONE_OFFSET field on the
> calendar *each time* before you use it to set an XmlBean object property.
> Otherwise, the second time you use a calendar to set a date it will appear
> with a timezone in your xml.
> **** schema for the example bean ****
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> elementFormDefault="qualified" attributeFormDefault="unqualified">
> <xs:element name="date" type="xs:date"/>
> </xs:schema>
> **** example code ****
> package test;
> import java.util.Calendar;
> import noNamespace.DateDocument;
> public class Test2
> {
> public static void main(String args[])
> {
> // create a new calendar
> Calendar calendar = Calendar.getInstance();
> calendar.set(Calendar.YEAR, 1844);
> calendar.set(Calendar.MONTH, Calendar.JANUARY);
> calendar.set(Calendar.DAY_OF_MONTH, 1);
>
> // clear time zone from calendar
> calendar.clear(Calendar.ZONE_OFFSET);
>
> // store the before status of the ZONE_OFFSET field
> // before == false
> boolean before = calendar.isSet(Calendar.ZONE_OFFSET);
>
> // create bean & set a element with type xs:date with calendar
> DateDocument dateDoc = DateDocument.Factory.newInstance();
> dateDoc.setDate(calendar);
>
> // store the after status of the ZONE_OFFSET field
> // I expect both before & after to equal false,
> // but after == true in this case
> boolean after = calendar.isSet(Calendar.ZONE_OFFSET);
>
> if (before != after)
> {
> System.out
> .println("Change detected in
> ZONE_OFFSET field: before:"
> + before + " after:" +
> after);
> }
> else
> {
> System.out.println("No change detected.");
> }
> }
> }
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