void OperationItemSupplier::trimExcess(bool zero_or_minimum) const
{
// This method can only trim operations not loading a resource
if (getLoads().begin() != getLoads().end())
return;
for (Operation::flowlist::const_iterator fliter = getFlows().begin();
fliter != getFlows().end(); ++fliter)
{
if (fliter->getQuantity() <= 0)
// Strange, shouldn't really happen
continue;
FlowPlan* candidate = nullptr;
double curmin = 0;
double oh = 0;
double excess_min = DBL_MAX;
for (Buffer::flowplanlist::const_iterator flplniter = fliter->getBuffer()->getFlowPlans().begin();
flplniter != fliter->getBuffer()->getFlowPlans().end();
++flplniter)
{
// For any operationplan we get the onhand when its successor
// replenishment arrives. If that onhand is higher than the minimum
// onhand value we can resize it.
// This is only valid in unconstrained plans and when there are
// no upstream activities.
if (flplniter->getEventType() == 3 && zero_or_minimum)
curmin = flplniter->getMin();
else if (flplniter->getEventType() == 1)
{
const FlowPlan* flpln = static_cast<const FlowPlan*>(&*flplniter);
if (oh - curmin < excess_min)
{
excess_min = oh - curmin;
if (excess_min < 0)
excess_min = 0;
}
if (flpln->getQuantity() > 0 && !flpln->getOperationPlan()->getLocked() && (!candidate || candidate->getDate() != flpln->getDate()))
{
if (candidate
&& excess_min > ROUNDING_ERROR
&& candidate->getQuantity() > excess_min + ROUNDING_ERROR
&& candidate->getQuantity() > getSizeMinimum() + ROUNDING_ERROR
)
{
// This candidate can now be resized
candidate->setQuantity(candidate->getQuantity() - excess_min, false);
candidate = nullptr;
}
else if (flpln->getOperation() == this)
candidate = const_cast<FlowPlan*>(flpln);
else
candidate = nullptr;
excess_min = DBL_MAX;
}
}
oh = flplniter->getOnhand();
}
if (candidate
&& excess_min > ROUNDING_ERROR
&& candidate->getQuantity() > excess_min + ROUNDING_ERROR
&& candidate->getQuantity() > getSizeMinimum() + ROUNDING_ERROR
)
// Resize the last candidate at the end of the horizon
candidate->setQuantity(candidate->getQuantity() - excess_min, false);
}
}
extern "C" PyObject* OperationItemDistribution::createOrder(
PyObject *self, PyObject *args, PyObject *kwdict
)
{
// Parse the Python arguments
PyObject* pydest = NULL;
unsigned long id = 0;
const char* ref = NULL;
PyObject* pyitem = NULL;
PyObject* pyorigin = NULL;
double qty = 0;
PyObject* pystart = NULL;
PyObject* pyend = NULL;
int consume = 1;
const char* status = NULL;
const char* source = NULL;
static const char *kwlist[] = {
"destination", "id", "reference", "item", "origin", "quantity", "start",
"end", "consume_material", "status", "source", NULL
};
int ok = PyArg_ParseTupleAndKeywords(
args, kwdict, "|OkzOOdOOpzz:createOrder", const_cast<char**>(kwlist),
&pydest, &id, &ref, &pyitem, &pyorigin, &qty, &pystart, &pyend,
&consume, &status, &source
);
if (!ok)
return NULL;
Date start = pystart ? PythonData(pystart).getDate() : Date::infinitePast;
Date end = pyend ? PythonData(pyend).getDate() : Date::infinitePast;
// Validate all arguments
if (!pydest || !pyitem)
{
PyErr_SetString(PythonDataException, "item and destination arguments are mandatory");
return NULL;
}
PythonData dest_tmp(pydest);
if (!dest_tmp.check(Location::metadata))
{
PyErr_SetString(PythonDataException, "destination argument must be of type location");
return NULL;
}
PythonData item_tmp(pyitem);
if (!item_tmp.check(Item::metadata))
{
PyErr_SetString(PythonDataException, "item argument must be of type item");
return NULL;
}
PythonData origin_tmp(pyorigin);
if (pyorigin && !origin_tmp.check(Location::metadata))
{
PyErr_SetString(PythonDataException, "origin argument must be of type location");
return NULL;
}
Item *item = static_cast<Item*>(item_tmp.getObject());
Location *dest = static_cast<Location*>(dest_tmp.getObject());
Location *origin = pyorigin ? static_cast<Location*>(origin_tmp.getObject()) : NULL;
// Find or create the destination buffer.
Buffer* destbuffer = NULL;
for (Buffer::iterator bufiter = Buffer::begin(); bufiter != Buffer::end(); ++bufiter)
{
if (bufiter->getLocation() == dest && bufiter->getItem() == item)
{
if (destbuffer)
{
stringstream o;
o << "Multiple buffers found for item '" << item << "'' and location'" << dest << "'";
throw DataException(o.str());
}
destbuffer = &*bufiter;
}
}
if (!destbuffer)
{
// Create the destination buffer
destbuffer = new BufferDefault();
stringstream o;
o << item << " @ " << dest;
destbuffer->setName(o.str());
destbuffer->setItem(item);
destbuffer->setLocation(dest);
}
// Build the producing operation for this buffer.
destbuffer->getProducingOperation();
// Look for a matching operation replenishing this buffer.
Operation *oper = NULL;
for (Buffer::flowlist::const_iterator flowiter = destbuffer->getFlows().begin();
flowiter != destbuffer->getFlows().end() && !oper; ++flowiter)
{
if (flowiter->getOperation()->getType() != *OperationItemDistribution::metadata
|| flowiter->getQuantity() <= 0)
continue;
OperationItemDistribution* opitemdist = static_cast<OperationItemDistribution*>(flowiter->getOperation());
if (origin)
{
// Origin must match as well
for (Operation::flowlist::const_iterator fl = opitemdist->getFlows().begin();
fl != opitemdist->getFlows().end(); ++ fl)
{
if (fl->getQuantity() < 0 && fl->getBuffer()->getLocation()->isMemberOf(origin))
oper = opitemdist;
}
}
else
oper = opitemdist;
}
// No matching operation is found.
if (!oper)
{
// We'll create one now, but that requires that we have an origin defined.
if (!origin)
throw DataException("Origin location is needed on this distribution order");
Buffer* originbuffer = NULL;
for (Buffer::iterator bufiter = Buffer::begin(); bufiter != Buffer::end(); ++bufiter)
{
if (bufiter->getLocation() == origin && bufiter->getItem() == item)
{
if (originbuffer)
{
stringstream o;
o << "Multiple buffers found for item '" << item << "'' and location'" << dest << "'";
throw DataException(o.str());
}
originbuffer = &*bufiter;
}
}
if (!originbuffer)
{
// Create the origin buffer
originbuffer = new BufferDefault();
stringstream o;
o << item << " @ " << origin;
originbuffer->setName(o.str());
originbuffer->setItem(item);
originbuffer->setLocation(origin);
}
// Note: We know that we need to create a new one. An existing one would
// have created an operation on the buffer already.
ItemDistribution *itemdist = new ItemDistribution();
itemdist->setOrigin(origin);
itemdist->setItem(item);
itemdist->setDestination(dest);
oper = new OperationItemDistribution(itemdist, originbuffer, destbuffer);
new ProblemInvalidData(oper, "Distribution orders on unauthorized lanes", "operation",
Date::infinitePast, Date::infiniteFuture, 1);
}
// Finally, create the operationplan
OperationPlan *opplan = oper->createOperationPlan(qty, start, end, NULL, NULL, 0, false);
if (id)
opplan->setIdentifier(id);
if (status)
opplan->setStatus(status);
if (ref)
opplan->setReference(ref);
if (!consume)
opplan->setConsumeMaterial(false);
opplan->activate();
// Return result
Py_INCREF(opplan);
return opplan;
}
