[PDFBOX-4294] Scratch file already closed when redoing overlay

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.11
• Component/s: Utilities
• Labels: Overlay
• Assignee: Unassigned
• Reporter: Adrian Sándor
• Created: 20/Aug/18 10:20
• Updated: 10/Nov/18 13:54

Description

Here's some sample code to reproduce the problem:

 

final String path = "orig.pdf";
final String stampPath = "stamp.pdf";
final PDDocument doc = PDDocument.load(new File(path));
final Overlay o = new Overlay();
o.setInputPDF(doc);
o.setOverlayPosition(Position.FOREGROUND);
final HashMap<Integer, String> m = new HashMap<>();
m.put(0, stampPath);
PDDocument res = o.overlay(m);
res.close();
res = o.overlay(m);

Basically I'm doing an overlay, closing the resulting document, then doing it again (normally I would make some changes first, but I didn't include that for the sake of brevity).

The last line throws java.io.IOException: Scratch file already closed

If I remove "res.close()" then the code works, but if I do the overlay multiple times, I get warnings like: org.apache.pdfbox.cos.COSDocument - Warning: You did not close a PDF Document
which suggests that I should actually close the document when I'm done with it.