package ie.omk.smpp.message;
import ie.omk.smpp.Address;
import ie.omk.smpp.util.GSMConstants;
import ie.omk.smpp.util.SMPPIO;
import java.io.OutputStream;
/**
* Query the last number of messages sent from a certain ESME. Relevant
* inherited fields from SMPPPacket: <br>
* <ul>
* source <br>
* </ul>
*
* @author Oran Kelly
* @version 1.0
*/
public class QueryLastMsgs extends ie.omk.smpp.message.SMPPRequest {
/** Number of messages to look up */
private int msgCount;
/**
* Construct a new QueryLastMsgs.
*/
public QueryLastMsgs() {
super(QUERY_LAST_MSGS);
msgCount = 0;
}
/**
* Construct a new QueryLastMsgs with specified sequence number.
*
* @param seqNum
* The sequence number to use
* @deprecated
*/
public QueryLastMsgs(int seqNum) {
super(QUERY_LAST_MSGS, seqNum);
msgCount = 0;
}
/**
* Set the number of messages to look up. The minimum number of messages to
* query is 1 and the maximum is 100.
*
* @param n
* The message count (1 <= n <= 100)
* @throws ie.omk.smpp.message.InvalidParameterValueException
* if the count is set outside the valid range.
*/
public void setMsgCount(int n) throws InvalidParameterValueException {
if (n > 0 && n <= 100) {
this.msgCount = n;
} else {
throw new InvalidParameterValueException(
"Message count must be between 1 and 100", n);
}
}
/** Get the number of messages being requested. */
public int getMsgCount() {
return msgCount;
}
public int getBodyLength() {
int len = (source != null) ? source.getLength() : 3;
// 1 1-byte integer
return len + 1;
}
/**
* Write a byte representation of this packet to an OutputStream
*
* @param out
* The OutputStream to write to
* @throws java.io.IOException
* if there's an error writing to the output stream.
*/
protected void encodeBody(OutputStream out) throws java.io.IOException {
if (source != null) {
source.writeTo(out);
} else {
// Write ton=0(null), npi=0(null), address=\0(nul)
new Address(GSMConstants.GSM_TON_UNKNOWN,
GSMConstants.GSM_NPI_UNKNOWN, "").writeTo(out);
}
SMPPIO.writeInt(msgCount, 1, out);
}
public void readBodyFrom(byte[] body, int offset)
throws SMPPProtocolException {
source = new Address();
source.readFrom(body, offset);
offset += source.getLength();
msgCount = SMPPIO.bytesToInt(body, offset++, 1);
}
/**
* Convert this packet to a String. Not to be interpreted programmatically,
* it's just dead handy for debugging!
*/
public String toString() {
return new String("query_last_msgs");
}
}