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Birt 4.7/4.8 throw warnings with Java 9/10 [message #1795678]

Wed, 26 September 2018 17:38

Lucas Santos

Messages: 6
Registered: September 2018

Junior Member

Running Birt 4.7 is throwing some warnings regarding on com.lowagie.text_2.1.7.v201004222200.jar

Here is the warning:
Quote:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.lowagie.text.pdf.MappedRandomAccessFile$1 (file:/Birt/lib/com.lowagie.text_2.1.7.v201004222200.jar) to method java.nio.DirectByteBuffer.cleaner()
WARNING: Please consider reporting this to the maintainers of com.lowagie.text.pdf.MappedRandomAccessFile$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

I started researching about it. In Birt 4.8 that library remains. So I was wondering if in future versions of Birt runtime there will be an update to that library, or if it will be replaced in order to avoid this.
Soon or later this will be an exception and something needs to be done

Any idea about that?

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Re: Birt 4.7/4.8 throw warnings with Java 9/10 [message #1795944 is a reply to message #1795678]

Tue, 02 October 2018 15:43

Markus Sandmann

Messages: 5
Registered: March 2016

Junior Member

That v2.1.7 of iText is very old and the last open source build as far as i know. More recent versions require licences so i don't think that it will be updated in BIRT any time soon.

Might consider swapping iText out in favor of Apache PDFBox?

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Re: Birt 4.7/4.8 throw warnings with Java 9/10 [message #1795947 is a reply to message #1795944]

Tue, 02 October 2018 16:28

Lucas Santos

Messages: 6
Registered: September 2018

Junior Member

But that's something Birt should do, right? I mean.. It is used inside birt runtime library.

Thank you for your reply

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Re: Birt 4.7/4.8 throw warnings with Java 9/10 [message #1796187 is a reply to message #1795947]

Mon, 08 October 2018 07:10

Markus Sandmann

Messages: 5
Registered: March 2016

Junior Member

Yes sure, didn't ment to "recommend" you to do that :).

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Re: Birt 4.7/4.8 throw warnings with Java 9/10 [message #1797175 is a reply to message #1796187]

Fri, 26 October 2018 18:19

Lucas Santos

Messages: 6
Registered: September 2018

Junior Member

Should I post this in another place? Or Birt Team is aware about this?

any idea?

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Re: Birt 4.7/4.8 throw warnings with Java 9/10 [message #1819013 is a reply to message #1797175]

Sat, 04 January 2020 19:05

Kevin Rahe

Messages: 3
Registered: October 2015

Junior Member

I found a workaround for later versions of iText here: https://stackoverflow.com/questions/53301158/itext-java-11-illegal-reflective-access-by-com-itextpdf-io-source-bytebufferran
Perhaps it would work for iText 2.1.7 as well? I tried to research this a little myself, but I cannot find source code for BIRT. (I am using BIRT 4.3.2 and tried looking in the file birt-source-4_3_2.zip, but couldn't find any .java files - lot of .xml files, though.)

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