コード例 #1
0
ファイル: CurrentImpl.java プロジェクト: cmjonze/bkdb
 public void checkMinVersion() throws Exception {
   // For this test to make sense, we must be at version 4.7 or higher
   //
   int major = Environment.getVersionMajor();
   int minor = Environment.getVersionMinor();
   assertTrue(major > 4 || (major == 4 && minor >= 7));
 }
コード例 #2
0
ファイル: Index.java プロジェクト: Radulfr/zeroc-ice
  protected Ice.Identity[] untypedFindFirst(byte[] k, int firstN) {
    EvictorI.DeactivateController deactivateController = _store.evictor().deactivateController();
    deactivateController.lock();
    try {
      com.sleepycat.db.DatabaseEntry key = new com.sleepycat.db.DatabaseEntry(k);

      //
      // When we have a custom-comparison function, Berkeley DB returns
      // the key on-disk (when it finds one). We disable this behavior:
      // (ref Oracle SR 5925672.992)
      //
      // In DB > 5.1.x we can not set DB_DBT_PARTIAL in the key Dbt when calling
      // getSearchKey.
      //
      if (com.sleepycat.db.Environment.getVersionMajor() < 5
          || (com.sleepycat.db.Environment.getVersionMajor() == 5
              && com.sleepycat.db.Environment.getVersionMinor() <= 1)) {
        key.setPartial(true);
      }

      com.sleepycat.db.DatabaseEntry pkey = new com.sleepycat.db.DatabaseEntry();
      com.sleepycat.db.DatabaseEntry value = new com.sleepycat.db.DatabaseEntry();
      //
      // dlen is 0, so we should not retrieve any value
      //
      value.setPartial(true);

      Ice.Communicator communicator = _store.communicator();
      Ice.EncodingVersion encoding = _store.encoding();

      TransactionI transaction = _store.evictor().beforeQuery();
      com.sleepycat.db.Transaction tx = transaction == null ? null : transaction.dbTxn();

      java.util.List<Ice.Identity> identities;

      for (; ; ) {
        com.sleepycat.db.SecondaryCursor dbc = null;
        identities = new java.util.ArrayList<Ice.Identity>();

        try {
          //
          // Move to the first record
          //
          dbc = _db.openSecondaryCursor(tx, null);
          boolean first = true;

          boolean found;

          do {
            com.sleepycat.db.OperationStatus status;
            if (first) {
              status = dbc.getSearchKey(key, pkey, value, null);
            } else {
              status = dbc.getNextDup(key, pkey, value, null);
            }

            found = status == com.sleepycat.db.OperationStatus.SUCCESS;

            if (found) {
              Ice.Identity ident = ObjectStore.unmarshalKey(pkey, communicator, encoding);
              identities.add(ident);
              first = false;
            }
          } while ((firstN <= 0 || identities.size() < firstN) && found);

          break; // for(;;)
        } catch (com.sleepycat.db.DeadlockException dx) {
          if (_store.evictor().deadlockWarning()) {
            communicator
                .getLogger()
                .warning(
                    "Deadlock in Freeze.Index.untypedFindFirst while "
                        + "iterating over Db \""
                        + _store.evictor().filename()
                        + "/"
                        + _dbName
                        + "\"");
          }

          if (tx != null) {
            throw new DeadlockException(
                _store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(), transaction, dx);
          }

          //
          // Otherwise retry
          //
        } catch (com.sleepycat.db.DatabaseException dx) {
          throw new DatabaseException(
              _store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(), dx);
        } finally {
          if (dbc != null) {
            try {
              dbc.close();
            } catch (com.sleepycat.db.DeadlockException dx) {
              if (tx != null) {
                throw new DeadlockException(
                    _store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(),
                    transaction,
                    dx);
              }
            } catch (com.sleepycat.db.DatabaseException dx) {
              //
              // Ignored
              //
            }
          }
        }
      }

      if (identities.size() != 0) {
        Ice.Identity[] result = new Ice.Identity[identities.size()];
        return identities.toArray(result);
      } else {
        return new Ice.Identity[0];
      }
    } finally {
      deactivateController.unlock();
    }
  }
コード例 #3
0
ファイル: Index.java プロジェクト: Radulfr/zeroc-ice
  protected int untypedCount(byte[] k) {
    EvictorI.DeactivateController deactivateController = _store.evictor().deactivateController();
    deactivateController.lock();
    try {
      com.sleepycat.db.DatabaseEntry key = new com.sleepycat.db.DatabaseEntry(k);

      //
      // When we have a custom-comparison function, Berkeley DB returns
      // the key on-disk (when it finds one). We disable this behavior:
      // (ref Oracle SR 5925672.992)
      //
      // In DB > 5.1.x we can not set DB_DBT_PARTIAL in the key Dbt when calling
      // getSearchKey.
      //
      if (com.sleepycat.db.Environment.getVersionMajor() < 5
          || (com.sleepycat.db.Environment.getVersionMajor() == 5
              && com.sleepycat.db.Environment.getVersionMinor() <= 1)) {
        key.setPartial(true);
      }

      com.sleepycat.db.DatabaseEntry value = new com.sleepycat.db.DatabaseEntry();
      //
      // dlen is 0, so we should not retrieve any value
      //
      value.setPartial(true);
      TransactionI transaction = _store.evictor().beforeQuery();
      com.sleepycat.db.Transaction tx = transaction == null ? null : transaction.dbTxn();

      for (; ; ) {
        com.sleepycat.db.Cursor dbc = null;
        try {
          dbc = _db.openCursor(tx, null);
          if (dbc.getSearchKey(key, value, null) == com.sleepycat.db.OperationStatus.SUCCESS) {
            return dbc.count();
          } else {
            return 0;
          }
        } catch (com.sleepycat.db.DeadlockException dx) {
          if (_store.evictor().deadlockWarning()) {
            _store
                .communicator()
                .getLogger()
                .warning(
                    "Deadlock in Freeze.Index.untypedCount while "
                        + "iterating over Db \""
                        + _store.evictor().filename()
                        + "/"
                        + _dbName
                        + "\"");
          }

          if (tx != null) {
            throw new DeadlockException(
                _store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(), transaction, dx);
          }
          //
          // Otherwise retry
          //
        } catch (com.sleepycat.db.DatabaseException dx) {
          throw new DatabaseException(
              _store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(), dx);
        } finally {
          if (dbc != null) {
            try {
              dbc.close();
            } catch (com.sleepycat.db.DeadlockException dx) {
              if (tx != null) {
                throw new DeadlockException(
                    _store.evictor().errorPrefix() + "Db.cursor: " + dx.getMessage(),
                    transaction,
                    dx);
              }
            } catch (com.sleepycat.db.DatabaseException dx) {
              //
              // Ignored
              //
            }
          }
        }
      }
    } finally {
      deactivateController.unlock();
    }
  }