/**
* Read all PeMS aggregate data in the given time range, having a VDS ID in the given list, and at
* the given aggregation level. List is sorted by time.
*/
public List<PeMSStationAggregate> read(
Interval interval, List<Long> vdsIds, PeMSAggregate.AggregationLevel level)
throws DatabaseException {
List<PeMSStationAggregate> list;
String pemsIdStr =
"pems.{vds_id=["
+ vdsIds.get(0)
+ ","
+ vdsIds.get(1)
+ ",...], interval="
+ interval
+ ", level="
+ level
+ "}";
long timeBegin = System.nanoTime();
try {
dbr.transactionBegin();
Monitor.debug("PeMS aggregate reader transaction beginning on " + pemsIdStr);
list = readList(interval, vdsIds, level);
dbr.transactionCommit();
Monitor.debug("PeMS aggregate reader transaction committing on " + pemsIdStr);
} catch (DatabaseException dbExc) {
Monitor.err(dbExc);
throw dbExc;
} finally {
try {
dbr.transactionRollback();
Monitor.debug("PeMS aggregate reader transaction rollback on " + pemsIdStr);
} catch (Exception Exc) {
// Do nothing.
}
}
long timeCommit = System.nanoTime();
if (list != null) {
Monitor.duration("Read " + pemsIdStr, timeCommit - timeBegin);
}
return list;
}
/** Read all PeMS data in the given time range and having a VDS ID in the given list. */
public PeMSSet read(Interval interval, List<Long> vdsIds) throws DatabaseException {
PeMSSet set = null;
String pemsIdStr =
"pems.{vds_id=["
+ vdsIds.get(0)
+ ","
+ vdsIds.get(1)
+ ",...], interval="
+ interval
+ "}";
long timeBegin = System.nanoTime();
try {
dbr.transactionBegin();
Monitor.debug("PeMS reader transaction beginning on " + pemsIdStr);
set = readSet(interval, vdsIds);
dbr.transactionCommit();
Monitor.debug("PeMS reader transaction committing on " + pemsIdStr);
} catch (DatabaseException dbExc) {
Monitor.err(dbExc);
throw dbExc;
} finally {
try {
dbr.transactionRollback();
Monitor.debug("PeMS reader transaction rollback on " + pemsIdStr);
} catch (Exception Exc) {
// Do nothing.
}
}
long timeCommit = System.nanoTime();
if (set != null) {
Monitor.duration("Read " + pemsIdStr, timeCommit - timeBegin);
}
return set;
}