Metacat

          //case-19 This is about the time stamps messing up.

          //P1(S1,t1) <-P2(S1,t2) <-P3(S1, t3) S1 = P3 (t1, t2 and t3 are the time stamp while t1 >t2 > t3. P1, P2 and P3 are a type 1 end, not an ideal chain. 

                                                       //So we will pick up P1 as the head since t1 is the lastest one. However, if we also consider the obsoletes chain, we will pick up P3)

            object = new ByteArrayInputStream("test".getBytes("UTF-8"));

            Identifier pid3_case19 = new Identifier();

            pid3_case19.setValue(generateDocumentId());

            System.out.println("pid3 is "+pid3_case19.getValue());

            Thread.sleep(1000);

            Identifier pid2_case19 = new Identifier();

            pid2_case19.setValue(generateDocumentId());

            System.out.println("pid2 is "+pid2_case19.getValue());

            Thread.sleep(1000);

            Identifier pid1_case19 = new Identifier();

            pid1_case19.setValue(generateDocumentId());

            System.out.println("pid1 is "+pid1_case19.getValue());

            Identifier sid_case19 = new Identifier();

            sid_case19.setValue("sid."+System.nanoTime());

            SystemMetadata sysmeta3_case19 = createSystemMetadata(pid3_case19, session.getSubject(), object);

            sysmeta3_case19.setSeriesId(sid_case19);

            sysmeta3_case19.setObsoletes(pid2_case19);

            CNodeService.getInstance(request).create(session, pid3_case19, object, sysmeta3_case19);

            SystemMetadata sys3 = CNodeService.getInstance(request).getSystemMetadata(session, pid3_case19);

            Date time3 = sys3.getDateUploaded();

            Thread.sleep(1000);

            object = new ByteArrayInputStream("test".getBytes("UTF-8"));

            SystemMetadata sysmeta2_case19 = createSystemMetadata(pid2_case19, session.getSubject(), object);

            sysmeta2_case19.setSeriesId(sid_case19);

            sysmeta2_case19.setObsoletes(pid1_case19);

            CNodeService.getInstance(request).create(session, pid2_case19, object, sysmeta2_case19);

            SystemMetadata sys2 = CNodeService.getInstance(request).getSystemMetadata(session, pid2_case19);

            Date time2 = sys2.getDateUploaded();

            Thread.sleep(1000);

            object = new ByteArrayInputStream("test".getBytes("UTF-8"));

            SystemMetadata sysmeta1_case19 = createSystemMetadata(pid1_case19, session.getSubject(), object);

            sysmeta1_case19.setSeriesId(sid_case19);

            CNodeService.getInstance(request).create(session, pid1_case19, object, sysmeta1_case19);

            SystemMetadata sys1 = CNodeService.getInstance(request).getSystemMetadata(session, pid1_case19);

            Date time1 = sys1.getDateUploaded();

            //time1 > time2 > time3

            assertTrue(time1.getTime()>time2.getTime());

            assertTrue(time2.getTime()>time3.getTime());

            System.out.println("case 19: =======");

            Identifier head2 = IdentifierManager.getInstance().getHeadPID(sid_case19);

            assertTrue(head2.equals(pid3_case19));