[PDFBOX-2981] Not correct support of incremental save

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.0.0
• Component/s: Writing
• Assignee: Andreas Lehmkühler
• Reporter: Evgeniy Muravitskiy
• Created: 21/Sep/15 15:16
• Updated: 20/Sep/18 18:06
• Resolved: 05/Mar/17 21:15

Description

When write code like follows:

try {
			PDDocument document = PDDocument.load(new File(SOURCE_PATH));
			// SOME_OBJECT is not object number of catalog, info dictionary or encrypt
			COSObjectKey key = new COSObjectKey(SOME_OBJECT, 0);
			COSObject objectFromPool = document.getDocument().getObjectFromPool(key);
			COSDictionary object = (COSDictionary) objectFromPool.getObject();
			object.setItem(COSName.getPDFName("Test"), COSBoolean.TRUE);
			object.setNeedToBeUpdated(true);
			OutputStream writer = new BufferedOutputStream(new FileOutputStream(OUTPUT_PATH));
			document.saveIncremental(writer);
			writer.close();
			document.close();
		} catch (IOException e) {
			e.printStackTrace();
		}

in result file I`ve got nothing. It`s related with next problem: when we use PDDocument.save(OutputStream) - OutputStream is real output stream (for example, FileOutputStream or BufferedOutputStream), but incremental save use ByteArrayOutputStream which not store data in some file and only keep it in memory. Also when save is incremental data from source file is not send to result file.