Package org.nfctools.ndef.wkt.handover.records

Examples of org.nfctools.ndef.wkt.handover.records.ErrorRecord


public class ErrorRecordEncoder implements WellKnownRecordPayloadEncoder {

  @Override
  public byte[] encodePayload(WellKnownRecord wellKnownRecord, NdefMessageEncoder messageEncoder) {

    ErrorRecord errorRecord = (ErrorRecord)wellKnownRecord;

    if (!errorRecord.hasErrorReason()) {
      throw new NdefEncoderException("Expected error reason", wellKnownRecord);
    }

    if (!errorRecord.hasErrorData()) {
      throw new NdefEncoderException("Expected error data", wellKnownRecord);
    }

    ErrorReason errorReason = errorRecord.getErrorReason();

    switch (errorReason) {
      case TemporaryMemoryConstraints: {
        /**
         * An 8-bit unsigned integer that expresses the minimum number of milliseconds after which a Handover
         * Request Message with the same number of octets might be processed successfully. The number of
         * milliseconds SHALL be determined by the time interval between the sending of the error indication and
         * the subsequent receipt of a Handover Request Message by the Handover Selector.
         */

        return new byte[] { errorReason.getValue(), (byte)(errorRecord.getErrorData().shortValue() & 0xFF) };
      }
      case PermanenteMemoryConstraints: {

        /**
         * A 32-bit unsigned integer, encoded with the most significant byte first, that indicates the maximum
         * number of octets of an acceptable Handover Select Message. The number of octets SHALL be determined
         * by the total length of the NDEF message, including all header information.
         */
        long unsignedInt = errorRecord.getErrorData().longValue();
        return new byte[] { errorReason.getValue(), (byte)((unsignedInt >> 24) & 0xFF),
            (byte)((unsignedInt >> 16) & 0xFF), (byte)((unsignedInt >> 8) & 0xFF),
            (byte)(unsignedInt & 0xFF) };
      }
      case CarrierSpecificConstraints: {

        /**
         * An 8-bit unsigned integer that expresses the minimum number of milliseconds after which a Handover
         * Request Message might be processed successfully. The number of milliseconds SHALL be determined by
         * the time interval between the sending of the error indication and the subsequent receipt of a
         * Handover Request Message by the Handover Selector.
         */

        return new byte[] { errorReason.getValue(), (byte)(errorRecord.getErrorData().shortValue() & 0xFF) };
      }
    }

    throw new NdefEncoderException("Unknown error reason " + errorReason, wellKnownRecord);
  }
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public class ErrorRecordDecoder implements WellKnownRecordPayloadDecoder {

  @Override
  public WellKnownRecord decodePayload(byte[] payload, NdefMessageDecoder messageDecoder) {
    ErrorRecord errorRecord = new ErrorRecord();

    ErrorReason errorReason = ErrorReason.toErrorReason(payload[0]);

    errorRecord.setErrorReason(errorReason);

    Number number;
    switch (errorReason) {
      case TemporaryMemoryConstraints: {
        /**
         * An 8-bit unsigned integer that expresses the minimum number of milliseconds after which a Handover
         * Request Message with the same number of octets might be processed successfully. The number of
         * milliseconds SHALL be determined by the time interval between the sending of the error indication and
         * the subsequent receipt of a Handover Request Message by the Handover Selector.
         */

        number = new Short((short)(payload[1] & 0xFFFF));

        break;
      }
      case PermanenteMemoryConstraints: {

        /**
         * A 32-bit unsigned integer, encoded with the most significant byte first, that indicates the maximum
         * number of octets of an acceptable Handover Select Message. The number of octets SHALL be determined
         * by the total length of the NDEF message, including all header information.
         */

        number = new Long(((long)(payload[1] & 0xFF) << 24) + ((payload[2] & 0xFF) << 16)
            + ((payload[3] & 0xFF) << 8) + ((payload[4] & 0xFF) << 0));

        break;
      }
      case CarrierSpecificConstraints: {

        /**
         * An 8-bit unsigned integer that expresses the minimum number of milliseconds after which a Handover
         * Request Message might be processed successfully. The number of milliseconds SHALL be determined by
         * the time interval between the sending of the error indication and the subsequent receipt of a
         * Handover Request Message by the Handover Selector.
         */

        number = new Short((short)(payload[1] & 0xFFFF));

        break;
      }
      default: {
        throw new RuntimeException();
      }
    }

    errorRecord.setErrorData(number);

    return errorRecord;
  }
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