public void close()

in flume-jdbc-channel/src/main/java/org/apache/flume/channel/jdbc/impl/JdbcTransactionImpl.java [107:174]
57 lines of code
11 McCabe index (conditional complexity)

  public void close() {
    if (!active) {
      throw new JdbcChannelException("Inactive transaction");
    }
    count--;
    LOGGER.debug("Tx count-close: " + count + ", rollback: " + rollback);
    if (count == 0) {
      active = false;
      try {
        if (rollback) {
          LOGGER.info("Attempting transaction roll-back");
          connection.rollback();
        } else {
          LOGGER.debug("Attempting transaction commit");
          connection.commit();

          // Commit successful. Update provider channel size
          providerImpl.updateCurrentChannelSize(this.persistedEventCount
              - this.removedEventCount);

          this.persistedEventCount = 0;
          this.removedEventCount = 0;

        }
      } catch (SQLException ex) {
        throw new JdbcChannelException("Unable to finalize transaction", ex);
      } finally {
        if (connection != null) {
          // Log Warnings
          try {
            SQLWarning warning = connection.getWarnings();
            if (warning != null) {
              StringBuilder sb = new StringBuilder("Connection warnigns: ");
              boolean first = true;
              while (warning != null) {
                if (first) {
                  first = false;
                } else {
                  sb.append("; ");
                }
                sb.append("[").append(warning.getErrorCode()).append("] ");
                sb.append(warning.getMessage());
              }
              LOGGER.warn(sb.toString());
            }
          } catch (SQLException ex) {
            LOGGER.error("Error while retrieving warnigns: "
                                + ex.getErrorCode(), ex);
          }

          // Close Connection
          try {
            connection.close();
          } catch (SQLException ex) {
            LOGGER.error(
                "Unable to close connection: " + ex.getErrorCode(), ex);
          }
        }

        // Clean up thread local
        txFactory.remove();

        // Destroy local state
        connection = null;
        txFactory = null;
      }
    }
  }