/**
* Make the message. No need to check whether mandatory fields are set, because the constructors
* of outgoing pdus are taking care of this.
*
* @return OutputStream of maked message. Return null if the PDU is invalid.
*/
public byte[] make() {
// Get Message-type.
int type = mPdu.getMessageType();
/* make the message */
switch (type) {
case PduHeaders.MESSAGE_TYPE_SEND_REQ:
if (makeSendReqPdu() != PDU_COMPOSE_SUCCESS) {
return null;
}
break;
case PduHeaders.MESSAGE_TYPE_NOTIFYRESP_IND:
if (makeNotifyResp() != PDU_COMPOSE_SUCCESS) {
return null;
}
break;
case PduHeaders.MESSAGE_TYPE_ACKNOWLEDGE_IND:
if (makeAckInd() != PDU_COMPOSE_SUCCESS) {
return null;
}
break;
case PduHeaders.MESSAGE_TYPE_READ_REC_IND:
if (makeReadRecInd() != PDU_COMPOSE_SUCCESS) {
return null;
}
break;
default:
return null;
}
return mMessage.toByteArray();
}
/**
* Constructor.
*
* @param context the context
* @param pdu the pdu to be composed
*/
public PduComposer(Context context, GenericPdu pdu) {
mPdu = pdu;
mResolver = context.getContentResolver();
mPduHeader = pdu.getPduHeaders();
mStack = new BufferStack();
mMessage = new ByteArrayOutputStream();
mPosition = 0;
}