OPENDJ-1116 Introduce abstraction for the changelog DB

Jean-Noel Rouvignac

26.41.2013 c64a67b3d0b51743d9f2a2bf110cb365b8b104af

 opends/tests/unit-tests-testng/src/server/org/opends/server/replication/ExternalChangeLogTest.java

@@ -2755,7 +2755,7 @@
    String tn = "ECLPurgeDraftCNDbAfterChangelogClear";
    debugInfo(tn, "Starting test\n\n");
    {
      DraftCNDbHandler draftdb = replicationServer.getDraftCNDbHandler();
      DraftCNDbHandler draftdb = (DraftCNDbHandler) replicationServer.getChangelogDB();
      assertEquals(draftdb.count(), 8);
      draftdb.setPurgeDelay(1000);

@@ -2764,7 +2764,7 @@

      // Expect changes purged from the changelog db to be sometimes
      // also purged from the DraftCNDb.
      while(draftdb.count()>0)
      while (!draftdb.isEmpty())
      {
        debugInfo(tn, "draftdb.count="+draftdb.count());
        sleep(200);