public ColumnPairElement getColumnPair(DBIdentifier name) {
ColumnPairElement cpe = (ColumnPairElement) columnPairs.find(name);
if (cpe == null)
try {
String fullName = name.getFullName();
if (fullName == null) {
return null;
}
int pos = fullName.indexOf(";");
String firstHalf = fullName.substring(0, pos);
String secondHalf = fullName.substring(pos + 1);
ColumnElement lce = getColumn(DBIdentifier.create(firstHalf));
pos = secondHalf.lastIndexOf(".");
TableElement te =
((TableElement) element)
.getDeclaringSchema()
.getTable(DBIdentifier.create(secondHalf.substring(0, pos)));
if (te == null) return null;
ColumnElement fce = te.getColumn(DBIdentifier.create(secondHalf));
if (lce == null || fce == null) return null;
ColumnPairElementImpl cpei =
new ColumnPairElementImpl(
lce.getName().getFullName() + ";" + fce.getName().getFullName()); // NOI18N
cpe = new ColumnPairElement(cpei, lce, fce, (TableElement) element);
changeColumnPairs(new ColumnPairElement[] {cpe}, DBElement.Impl.ADD);
} catch (DBException exc) {
exc.printStackTrace();
return null;
}
return cpe;
}
public void run() {
try {
_db.init();
} catch (DBException e) {
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
try {
_workloadstate = _workload.initThread(_props, _threadid, _threadcount);
} catch (WorkloadException e) {
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
// spread the thread operations out so they don't all hit the DB at the same time
try {
// GH issue 4 - throws exception if _target>1 because random.nextInt argument must be >0
// and the sleep() doesn't make sense for granularities < 1 ms anyway
if ((_target > 0) && (_target <= 1.0)) {
sleep(Utils.random().nextInt((int) (1.0 / _target)));
}
} catch (InterruptedException e) {
// do nothing.
}
try {
if (_dotransactions) {
long st = System.currentTimeMillis();
while (((_opcount == 0) || (_opsdone < _opcount)) && !_workload.isStopRequested()) {
if (!_workload.doTransaction(_db, _workloadstate)) {
break;
}
_opsdone++;
// throttle the operations
if (_target > 0) {
// this is more accurate than other throttling approaches we have tried,
// like sleeping for (1/target throughput)-operation latency,
// because it smooths timing inaccuracies (from sleep() taking an int,
// current time in millis) over many operations
while (System.currentTimeMillis() - st < ((double) _opsdone) / _target) {
try {
sleep(1);
} catch (InterruptedException e) {
// do nothing.
}
}
}
}
} else {
long st = System.currentTimeMillis();
while (((_opcount == 0) || (_opsdone < _opcount)) && !_workload.isStopRequested()) {
if (!_workload.doInsert(_db, _workloadstate)) {
break;
}
_opsdone++;
// throttle the operations
if (_target > 0) {
// this is more accurate than other throttling approaches we have tried,
// like sleeping for (1/target throughput)-operation latency,
// because it smooths timing inaccuracies (from sleep() taking an int,
// current time in millis) over many operations
while (System.currentTimeMillis() - st < ((double) _opsdone) / _target) {
try {
sleep(1);
} catch (InterruptedException e) {
// do nothing.
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
e.printStackTrace(System.out);
System.exit(0);
}
try {
_db.cleanup();
} catch (DBException e) {
e.printStackTrace();
e.printStackTrace(System.out);
return;
}
}
