public boolean isValidExchange(SerialNumber serialNumber, Exchange request) {
// create upper bound for calculation of average
SerialNumber validityCheckBound =
new SerialNumber(serialNumber.getSerialNumber().add(ADD_FOR_BOUND));
// find the set of serial #'s strictly greater than serialNumber and <= validityCheckBound
NavigableSet<SerialNumber> temp =
getExclusiveToInclusiveSubset(
request.getCompatibleProducts(), serialNumber, validityCheckBound);
// find the st of serial #'s strictly greater than serialNumber and less than average
// if empty, no compatible product exists
return !(getExclusiveSubset(request, serialNumber, average(temp)).isEmpty());
}
/**
* Description of the Method
*
* @param ctx Description of the Parameter
* @param conn Description of the Parameter
* @param instance Description of the Parameter
* @param msgs Description of the Parameter
* @param manager Description of the Parameter
* @param assistor Description of the Parameter
* @return Description of the Return Value
*/
public int preInsert(
SessionContext ctx,
DatabaseConnection conn,
FormInstance instance,
ErrorMessages msgs,
EventManager manager,
SqlAssistor assistor) {
int seqNo = (int) SerialNumber.getNextSN("BMLOANADMCHANGE", "SEQNO");
// System.out.println("Seqno:"+seqNo);
instance.setValue("SEQNO", seqNo);
assistor.setSqlFieldValue(assistor.getDefaultTbl(), "SEQNO", seqNo + "");
MyDB.getInstance().addDBConn(conn);
return InactLoanMan.loanAdmByChange(this.bmno, ctx.getParameter("NEWADM"));
}
// returns validity of given serial number
public static Boolean isValidSerialNumber(SerialNumber serialNumber) {
// check whether even and the third bit is set
return serialNumber.isOdd() && checkLowerBound(serialNumber);
}