[
https://issues.apache.org/jira/browse/PDFBOX-4292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16589229#comment-16589229
]
Tilman Hausherr commented on PDFBOX-4292:
-----------------------------------------
One reason that the tests fail with your change is that the milliseconds is
lost in the COS conversion but not in the xmp conversion. So the test needs to
be changed.
> Validation fails if ModifyDate and ModDate are specified using different time
> zones
> -----------------------------------------------------------------------------------
>
> Key: PDFBOX-4292
> URL: https://issues.apache.org/jira/browse/PDFBOX-4292
> Project: PDFBox
> Issue Type: Bug
> Components: Preflight
> Affects Versions: 2.0.11
> Reporter: Alonso Gonzalez
> Priority: Major
> Attachments: Test 2.pdf
>
>
> I have a test PDF with this metadata:
> {quote}/ModDate (D:20180817115837+02'00')
> <xmp:ModifyDate>2018-08-17T09:58:37Z</xmp:ModifyDate>
> {quote}
>
> According to the specification this is valid and should be considered as
> equivalent:
> {quote}For properties that map between the PDF date type, defined by PDF
> Reference, 3.8.2, and the XMP Date type, defined by Date and Time Formats,
> value equivalence shall be on a
> component-by-component basis, relative to Coordinated Universal Time (UTC),
> i.e., correcting for local time
> zone offset.
> EXAMPLE The document information dictionary entries:
> /CreationDate (D:20040402)
> /ModDate (D:200404080+91132-05'00')
> are equivalent to the XMP properties:
> <xmp:CreateDate>2004-04-02</xmp:CreateDate>
> <xmp:ModifyDate>2004-04-08T14:11:32Z</xmp:ModifyDate>
> {quote}
>
> In
> org.apache.pdfbox.preflight.metadata.SynchronizedMetaDataValidation#analyzeModifyDateProperty
> the calendar objects are formatted as strings and then compared:
> {code:java}
> else
> if(!DateConverter.toISO8601(xmpModifyDate).equals(DateConverter.toISO8601(modifyDate)))
> {
> ve.add(this.unsynchronizedMetaDataError("ModificationDate"));
> }
> {code}
> In my testcase DateConverter.toISO8601(modifyDate) yields
> "2018-08-17T11:58:37+02:00" while DateConverter.toISO8601(xmpModifyDate)
> yields "2018-08-17T09:58:37+00:00". These timestamps are semantically equal
> (xmpModifyDate.compareTo(modifyDate) yields 0) and therefore the PDF should
> be considered as valid PDF-A1b.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
