This class models a buffer that is replenish by an external supplier using a reorder-point policy. More...

#include <model.h>

Inheritance diagram for frepple::BufferProcure:

Public Member Functions

 BufferProcure (const string &c)
 
virtual void endElement (XMLInput &, const Attribute &, const DataElement &)
 
virtual PyObject * getattro (const Attribute &)
 
TimePeriod getFence () const
 
TimePeriod getLeadtime () const
 
TimePeriod getMaximumInterval () const
 
double getMaximumInventory () const
 
TimePeriod getMinimumInterval () const
 
double getMinimumInventory () const
 
OperationgetOperation () const
 
virtual size_t getSize () const
 
double getSizeMaximum () const
 
double getSizeMinimum () const
 
double getSizeMultiple () const
 
virtual const MetaClassgetType () const
 
virtual int setattro (const Attribute &, const PythonObject &)
 
void setFence (TimePeriod p)
 
void setLeadtime (TimePeriod p)
 
void setMaximumInterval (TimePeriod p)
 
void setMaximumInventory (double f)
 
void setMinimumInterval (TimePeriod p)
 
void setMinimumInventory (double f)
 
void setSizeMaximum (double f)
 
void setSizeMinimum (double f)
 
void setSizeMultiple (double f)
 
virtual void solve (Solver &s, void *v=NULL) const
 
virtual void writeElement (XMLOutput *, const Keyword &, mode=DEFAULT) const
 
- Public Member Functions inherited from frepple::Buffer
virtual void beginElement (XMLInput &, const Attribute &)
 
 Buffer (const string &str)
 
void deleteOperationPlans (bool deleteLockedOpplans=false)
 
size_t extrasize () const
 
FlowfindFlow (const Operation *o, Date d) const
 
virtual void followPegging (PeggingIterator &, FlowPlan *, short, double, double)
 
double getCarryingCost () const
 
const flowplanlistgetFlowPlans () const
 
flowplanlistgetFlowPlans ()
 
const flowlistgetFlows () const
 
bool getHidden () const
 
ItemgetItem () const
 
LocationgetLocation () const
 
double getMaximum () const
 
CalendarDoublegetMaximumCalendar () const
 
double getMinimum () const
 
CalendarDoublegetMinimumCalendar () const
 
double getOnHand (Date d=Date::infinitePast) const
 
double getOnHand (Date, Date, bool min=true) const
 
OperationgetProducingOperation () const
 
void setCarryingCost (const double c)
 
void setHidden (bool b)
 
void setItem (Item *i)
 
void setLocation (Location *i)
 
void setMaximum (double)
 
void setMaximumCalendar (CalendarDouble *)
 
void setMinimum (double)
 
void setMinimumCalendar (CalendarDouble *)
 
void setOnHand (double f)
 
void setProducingOperation (Operation *o)
 
virtual void updateProblems ()
 
virtual ~Buffer ()
 
- Public Member Functions inherited from frepple::utils::HasHierarchy< Buffer >
void beginElement (XMLInput &, const Attribute &)
 
memberIterator beginMember () const
 
void endElement (XMLInput &, const Attribute &, const DataElement &)
 
unsigned short getHierarchyLevel () const
 
BuffergetOwner () const
 
 HasHierarchy (const string &n)
 
bool hasOwner () const
 
bool isGroup () const
 
void setOwner (Buffer *f)
 
void writeElement (XMLOutput *, const Keyword &, mode=DEFAULT) const
 
 ~HasHierarchy ()
 
- Public Member Functions inherited from frepple::utils::HasName< Buffer >
int compare (const PyObject *other) const
 
 HasName (const string &n)
 
 HasName (const char *n)
 
void setName (const string &newname)
 
virtual PyObject * str () const
 
 ~HasName ()
 
- Public Member Functions inherited from frepple::utils::Tree::TreeNode
TreeNodedecrement () const
 
const string & getName () const
 
TreeNodeincrement () const
 
bool operator< (const TreeNode &o)
 
 TreeNode (const string &n)
 
virtual ~TreeNode ()
 
- Public Member Functions inherited from frepple::utils::Object
 Object ()
 
virtual ~Object ()
 
- Public Member Functions inherited from frepple::utils::PythonExtensionBase
virtual PyObject * call (const PythonObject &args, const PythonObject &kwds)
 
Py_ssize_t getReferenceCount () const
 
void initType (const MetaClass *t)
 
void initType (PyTypeObject *t)
 
virtual PyObject * iternext ()
 
 PythonExtensionBase ()
 
void resetReferenceCount ()
 
virtual ~PythonExtensionBase ()
 
- Public Member Functions inherited from frepple::HasLevel
unsigned short getCluster () const
 
short getLevel () const
 
- Public Member Functions inherited from frepple::Plannable
bool getChanged () const
 
bool getDetectProblems () const
 
PlannablegetEntity () const
 
 Plannable ()
 
void setChanged (bool b=true)
 
void setDetectProblems (bool b)
 
- Public Member Functions inherited from frepple::HasProblems
 HasProblems ()
 
virtual ~HasProblems ()
 
- Public Member Functions inherited from frepple::Solvable
virtual ~Solvable ()
 
- Public Member Functions inherited from frepple::utils::HasDescription
void endElement (XMLInput &, const Attribute &, const DataElement &)
 
string getCategory () const
 
string getDescription () const
 
string getSubCategory () const
 
void setCategory (const string &f)
 
void setDescription (const string &f)
 
void setSubCategory (const string &f)
 
void writeElement (XMLOutput *, const Keyword &, mode=DEFAULT) const
 

Static Public Member Functions

static int initialize ()
 
- Static Public Member Functions inherited from frepple::Buffer
static int initialize ()
 
- Static Public Member Functions inherited from frepple::HasLevel
static unsigned short getNumberOfClusters ()
 
static unsigned short getNumberOfHangingClusters ()
 
static void triggerLazyRecomputation ()
 
- Static Public Member Functions inherited from frepple::Plannable
static void computeProblems ()
 
- Static Public Member Functions inherited from frepple::HasProblems
static EntityIterator beginEntity ()
 
static EntityIterator endEntity ()
 

Static Public Attributes

static const MetaClassmetadata
 
- Static Public Attributes inherited from frepple::Buffer
static const MetaCategorymetadata
 

Additional Inherited Members

- Public Types inherited from frepple::Buffer
typedef Association< Operation,
Buffer, Flow >::ListB 
flowlist
 
typedef TimeLine< FlowPlanflowplanlist
 
- Protected Member Functions inherited from frepple::utils::NonCopyable
 NonCopyable ()
 
 ~NonCopyable ()
 
- Protected Member Functions inherited from frepple::HasLevel
 HasLevel ()
 
 HasLevel (const HasLevel &o)
 
 ~HasLevel ()
 
- Protected Member Functions inherited from frepple::utils::HasDescription
size_t extrasize () const
 
- Static Protected Member Functions inherited from frepple::utils::PythonExtensionBase
static PythonTyperegisterPythonType (int, const type_info *)
 
- Static Protected Member Functions inherited from frepple::HasLevel
static void computeLevels ()
 
- Static Protected Attributes inherited from frepple::utils::PythonExtensionBase
static vector< PythonType * > table
 

Detailed Description

This class models a buffer that is replenish by an external supplier using a reorder-point policy.

It represents a material buffer where a replenishment is triggered whenever the inventory drops below the minimum level. The buffer is then replenished to the maximum inventory level.
A leadtime is taken into account for the replenishments.
The following parameters control this replenishment:

  • MinimumInventory:
    Inventory level triggering a new replenishment.
    The actual inventory can drop below this value.
  • MaximumInventory:
    Inventory level to which we try to replenish.
    The actual inventory can exceed this value.
  • Leadtime:
    Time taken between placing the purchase order with the supplier and the delivery of the material.

Using the additional parameters described below the replenishments can be controlled in more detail. The resulting inventory profile can end up to be completely different from the classical saw-tooth pattern!

The timing of the replenishments can be constrained by the following parameters:

  • MinimumInterval:
    Minimum time between replenishments.
    The order quantity will be increased such that it covers at least the demand in the minimum interval period. The actual inventory can exceed the target set by the MinimumInventory parameter.
  • MaximumInterval:
    Maximum time between replenishments.
    The order quantity will replenish to an inventory value less than the maximum when this maximum interval is reached. When the minimum and maximum interval are equal we basically define a fixed schedule replenishment policy.

The quantity of the replenishments can be constrained by the following parameters:

  • MinimumQuantity:
    Minimum quantity for a replenishment.
    This parameter can cause the actual inventory to exceed the target set by the MinimumInventory parameter.
  • MaximumQuantity:
    Maximum quantity for a replenishment.
    This parameter can cause the maximum inventory target never to be reached.
  • MultipleQuantity:
    All replenishments are rounded up to a multiple of this value. When the minimum and maximum quantity are equal we basically define a fixed quantity replenishment policy.

Definition at line 2972 of file model.h.

Constructor & Destructor Documentation

frepple::BufferProcure::BufferProcure ( const string &  c)
inlineexplicit

Constructor.

Definition at line 2986 of file model.h.

Member Function Documentation

void frepple::BufferProcure::endElement ( XMLInput pIn,
const Attribute pAttr,
const DataElement pElement 
)
virtual

Reimplemented from frepple::Buffer.

Definition at line 709 of file buffer.cpp.

PyObject * frepple::BufferProcure::getattro ( const Attribute attr)
virtual

Default getattro method.
Subclasses are expected to implement an override if the type supports gettattro.

Reimplemented from frepple::Buffer.

Definition at line 922 of file buffer.cpp.

TimePeriod frepple::BufferProcure::getFence ( ) const
inline

Return the release time fence.

Definition at line 3004 of file model.h.

TimePeriod frepple::BufferProcure::getLeadtime ( ) const
inline

Return the purchasing leadtime.

Definition at line 2992 of file model.h.

TimePeriod frepple::BufferProcure::getMaximumInterval ( ) const
inline

Return the maximum time interval between sytem-generated replenishment operations.

Definition at line 3088 of file model.h.

double frepple::BufferProcure::getMaximumInventory ( ) const
inline

Return the maximum inventory level to which we wish to replenish.

Definition at line 3044 of file model.h.

TimePeriod frepple::BufferProcure::getMinimumInterval ( ) const
inline

Return the minimum interval between purchasing operations.
This parameter doesn't control the timing of the first purchasing operation, but only to the subsequent ones.

Definition at line 3073 of file model.h.

double frepple::BufferProcure::getMinimumInventory ( ) const
inline

Return the inventory level that will trigger creation of a purchasing.

Definition at line 3016 of file model.h.

Operation * frepple::BufferProcure::getOperation ( ) const

Returns the operation that is automatically created to represent the procurements.

Definition at line 767 of file buffer.cpp.

virtual size_t frepple::BufferProcure::getSize ( ) const
inlinevirtual

Return the memory size of the object in bytes.

Implements frepple::utils::Object.

Definition at line 2979 of file model.h.

double frepple::BufferProcure::getSizeMaximum ( ) const
inline

Return the maximum quantity of a purchasing operation.

Definition at line 3115 of file model.h.

double frepple::BufferProcure::getSizeMinimum ( ) const
inline

Return the minimum quantity of a purchasing operation.

Definition at line 3101 of file model.h.

double frepple::BufferProcure::getSizeMultiple ( ) const
inline

Return the multiple quantity of a purchasing operation.

Definition at line 3129 of file model.h.

virtual const MetaClass& frepple::BufferProcure::getType ( ) const
inlinevirtual

This returns the type information on the object, a bit similar to the standard type_info information.

Reimplemented from frepple::Buffer.

Definition at line 2978 of file model.h.

int frepple::BufferProcure::initialize ( )
static

Definition at line 79 of file buffer.cpp.

int frepple::BufferProcure::setattro ( const Attribute attr,
const PythonObject field 
)
virtual

Default setattro method.
Subclasses are expected to implement an override if the type supports settattro.

Reimplemented from frepple::Buffer.

Definition at line 948 of file buffer.cpp.

void frepple::BufferProcure::setFence ( TimePeriod  p)
inline

Update the release time fence.

Definition at line 3007 of file model.h.

void frepple::BufferProcure::setLeadtime ( TimePeriod  p)
inline

Update the procurement leadtime.

Definition at line 2995 of file model.h.

void frepple::BufferProcure::setMaximumInterval ( TimePeriod  p)
inline

Update the minimum time between replenishments.

Definition at line 3091 of file model.h.

void frepple::BufferProcure::setMaximumInventory ( double  f)
inline

Update the maximum inventory level to which we plan to replenish.
This is not a hard limit - other parameters can make that the actual inventory either never reaches this value or always exceeds it.

Definition at line 3051 of file model.h.

void frepple::BufferProcure::setMinimumInterval ( TimePeriod  p)
inline

Update the minimum time between replenishments.

Definition at line 3076 of file model.h.

void frepple::BufferProcure::setMinimumInventory ( double  f)
inline

Update the inventory level that will trigger the creation of a replenishment.
Because of the replenishment leadtime, the actual inventory will drop below this value. It is up to the user to set an appropriate minimum value.

Definition at line 3025 of file model.h.

void frepple::BufferProcure::setSizeMaximum ( double  f)
inline

Update the maximum replenishment quantity.

Definition at line 3118 of file model.h.

void frepple::BufferProcure::setSizeMinimum ( double  f)
inline

Update the minimum replenishment quantity.

Definition at line 3104 of file model.h.

void frepple::BufferProcure::setSizeMultiple ( double  f)
inline

Update the multiple quantity.

Definition at line 3132 of file model.h.

virtual void frepple::BufferProcure::solve ( Solver s,
void *  v = NULL 
) const
inlinevirtual

This method is called by solver classes. The implementation of this class simply calls the solve method on the solver class. Using the polymorphism the solver can implement seperate methods for different plannable subclasses.

Reimplemented from frepple::Buffer.

Definition at line 2975 of file model.h.

void frepple::BufferProcure::writeElement ( XMLOutput o,
const Keyword tag,
mode  m = DEFAULT 
) const
virtual

Reimplemented from frepple::Buffer.

Definition at line 734 of file buffer.cpp.

Member Data Documentation

const MetaClass * frepple::BufferProcure::metadata
static

Definition at line 2989 of file model.h.


The documentation for this class was generated from the following files: