André Heuner created PDFBOX-3612:
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             Summary: ScratchFileBuffer not closed message related to 
overlay.overlay(overlayGuide);
                 Key: PDFBOX-3612
                 URL: https://issues.apache.org/jira/browse/PDFBOX-3612
             Project: PDFBox
          Issue Type: Bug
    Affects Versions: 2.0.3
         Environment: Windows 7 Professional, Eclipse, JDK 1.8
            Reporter: André Heuner
            Priority: Minor


I'd like to add a watermark to a PDF and have the following code:

        PDDocument pdfDocument = PDDocument.load(new 
        PDDocument pdfCopy = Pdf.addWatermark(pdfDocument);
                        
        pdfDocument.close();
        pdfCopy.close();

        ....

        public static PDDocument addWatermark(PDDocument document) {
                try {
                HashMap<Integer, String> overlayGuide = new HashMap<Integer, 
String>();
                
                for(int no = 0; no < document.getNumberOfPages(); no++){
                        overlayGuide.put(no +1, "C:\\Software\\watermark.pdf");
                }
            
                Overlay overlay = new Overlay();
                overlay.setInputPDF(document);
                overlay.setOverlayPosition(Overlay.Position.FOREGROUND);
                
                PDDocument result = overlay.overlay(overlayGuide);
                
                document.close();
                overlay.close();
                                
                return result;
                
                } catch (Exception e) {
                        log.error("Error while adding watermark: " 
+e.getMessage(), e);
                        
                        return document;
                }
        }

overlay.overlay(...) seems to cause lot's of warnings:

[2016-12-01-09:48:51] DEBUG [org.apache.pdfbox.io.ScratchFileBuffer] 
ScratchFileBuffer not closed! 
[2016-12-01-09:48:51] DEBUG [org.apache.pdfbox.io.ScratchFileBuffer] 
ScratchFileBuffer not closed! 
[2016-12-01-09:48:51] DEBUG [org.apache.pdfbox.io.ScratchFileBuffer] 
ScratchFileBuffer not closed! 
[2016-12-01-09:48:51] DEBUG [org.apache.pdfbox.io.ScratchFileBuffer] 
ScratchFileBuffer not closed! 
[2016-12-01-09:48:51] DEBUG [org.apache.pdfbox.io.ScratchFileBuffer] 
ScratchFileBuffer not closed! 
[2016-12-01-09:48:51] DEBUG [org.apache.pdfbox.io.ScratchFileBuffer] 
ScratchFileBuffer not closed! 

Is there anything, that can be done to fix this issue? I tried to close 
anything that is closable - but the issue remains. Or can it safely be ignored?




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