public int compare(DatanodeDescriptor d1, DatanodeDescriptor d2) {
int ret = 0;
switch (sortField) {
case FIELD_LAST_CONTACT:
ret = (int) (d2.getLastUpdate() - d1.getLastUpdate());
break;
case FIELD_CAPACITY:
long dlong = d1.getCapacity() - d2.getCapacity();
ret = (dlong < 0) ? -1 : ((dlong > 0) ? 1 : 0);
break;
case FIELD_USED:
dlong = d1.getDfsUsed() - d2.getDfsUsed();
ret = (dlong < 0) ? -1 : ((dlong > 0) ? 1 : 0);
break;
case FIELD_NONDFS_USED:
dlong = d1.getNonDfsUsed() - d2.getNonDfsUsed();
ret = (dlong < 0) ? -1 : ((dlong > 0) ? 1 : 0);
break;
case FIELD_REMAINING:
dlong = d1.getRemaining() - d2.getRemaining();
ret = (dlong < 0) ? -1 : ((dlong > 0) ? 1 : 0);
break;
case FIELD_PERCENT_USED:
double ddbl = ((d1.getDfsUsedPercent()) - (d2.getDfsUsedPercent()));
ret = (ddbl < 0) ? -1 : ((ddbl > 0) ? 1 : 0);
break;
case FIELD_PERCENT_REMAINING:
ddbl = ((d1.getRemainingPercent()) - (d2.getRemainingPercent()));
ret = (ddbl < 0) ? -1 : ((ddbl > 0) ? 1 : 0);
break;
case FIELD_BLOCKS:
ret = d1.numBlocks() - d2.numBlocks();
break;
case FIELD_NAME:
ret = d1.getHostName().compareTo(d2.getHostName());
break;
}
return (sortOrder == SORT_ORDER_DSC) ? -ret : ret;
}
