Java 8 bug uncovered, and wondering if the PDFBox team would be willing to work around it? You should probably reply with an emphatic "no", butI figure it is worth a shot.
Here is the openjdk bug: https://bugs.openjdk.java.net/browse/JDK-8054565 PDDocument.saveIncremental(OutputStream) calls close() twice - once in try{} and once in finally{}, relying on the Closable contract which says it will do nothing if the stream is already close. But, we see this: Caused by: java.io.IOException: Closed LOB at oracle.jdbc.driver.DatabaseError.SQLToIOException(DatabaseError.java:519) at oracle.jdbc.driver.OracleBlobOutputStream.ensureOpen(OracleBlobOutputStream.java:231) at oracle.jdbc.driver.OracleBlobOutputStream.flush(OracleBlobOutputStream.java:167) at java.io.FilterOutputStream.flush(FilterOutputStream.java:140) at java.io.FilterOutputStream.close(FilterOutputStream.java:158) at org.apache.pdfbox.pdfwriter.COSWriter.close(COSWriter.java:300) at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1366) at ourpackage.util.pdf.PdfDRM.applyDRM(PdfDRM.java:225) at ourpackage.db.liquibase.customchanges.IQMDxContentLoader.applyDrmToCesPdfDocumentInDatabase(IQMDxContentLoader.java:383) at ourpackage.db.liquibase.customchanges.IQMDxContentLoader.applyZippedCesDocumentChangesToDatabase(IQMDxContentLoader.java:265) at ourpackage.db.liquibase.customchanges.IQMDxContentLoader.generateStatements(IQMDxContentLoader.java:153) ... 33 more Because Java 8's FilterOutputStream.close() is calling flush() on the second close and Oracle's driver code doesn't like that. The bug can be worked around it by implementing close() in COSStandardOutputStream as below: private boolean closed; @Override public void close() throws IOException { try (OutputStream ostream = out) { if (!closed) flush(); } closed = true; } I've done this in our project code base, by cloning and owning COSStandardOutputStream and adding it to our classpath first. Not ideal. Also, mailing list thread on openjdk that recognizes the bug http://marc.info/?t=141767408700004&r=1&w=2. Although, it is fixed in Java 9 with no plan of backporting. Not sure how to request a backport, but that would be the ideal solution. -- Mark Haller [email protected] 512-909-7347 (cell) 512-524-4510 (phone)
