209 lines
6.7 KiB
C++
209 lines
6.7 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1997 - 1997
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//
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// File: gmprop.h
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//
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//--------------------------------------------------------------------------
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//
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// gmprop.h: Graphical model property and property type declarations
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//
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#ifndef _GMPROP_H_
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#define _GMPROP_H_
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/*
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A word about DYNAMICALLY EXTENSIBLE OBJECTS and their usage.
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These graphical model object classes are designed to require only very occasional
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addition of new variables. Most add-on algorithms and functionality do, of course,
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require new variables, but there are several ways of meeting that need.
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1) The standard C++ method of subclassing. This is a reasonable approach for
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some objects, but typically not for nodes in a belief network. Cascaded types
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nodes render header files unreadable and cause severe memory bloat. Also, most
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variables apply to a phase of processing or only certain nodes. These cases
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are better handled by the subsequence approaches.
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2) Dynamic property lists. Every node in a belief network, as well as the network
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itself, has a property list. New GOBJPROPTYPEs can be easily created, then new PROPMBNs
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can be added to the appropriate nodes.
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3) Dynamic bit flags. Every node and the network has a VFLAG vector, and member functions
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of the MPSYMTBL symbol table support conversion of names to indicies.
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4) New edge types. An "edge" is a real C++ object, and the need for seriously complex
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and versatile data types can be met by creating a new edge type which connects
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pairs of other data structures. Edges can even be created which connect a node
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to itself, thus creating an "add-on" data structure.
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*/
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#include <list>
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#include "basics.h"
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#include "symtmbn.h"
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#include "enumstd.h"
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class MODEL;
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class MBNET;
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////////////////////////////////////////////////////////////////////
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// class GOBJPROPTYPE:
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// A named property type descriptor living in a belief network.
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// The word "choice" connotes an enumerated value (i.e., and
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// an integer property where each value from zero on is named).
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////////////////////////////////////////////////////////////////////
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class GOBJPROPTYPE : public GOBJMBN
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{
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friend class DSCPARSER; // So the parser can create them
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friend class BNREG; // So they can be loaded from the Registry
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public:
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GOBJPROPTYPE () {}
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virtual ~ GOBJPROPTYPE() {}
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// Return object type
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virtual INT EType () const
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{ return EBNO_PROP_TYPE ; }
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virtual GOBJMBN * CloneNew ( MODEL & modelSelf,
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MODEL & modelNew,
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GOBJMBN * pgobjNew = NULL );
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// Return property type descriptor
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UINT FPropType() const
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{ return _fType; }
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// Return the list of enumerated choices
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const VZSREF VzsrChoice() const
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{ return _vzsrChoice; }
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const ZSREF ZsrComment () const
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{ return _zsrComment; }
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protected:
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UINT _fType; // Property type flags
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VZSREF _vzsrChoice; // Array of choice names
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ZSREF _zsrComment; // Comment
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HIDE_UNSAFE(GOBJPROPTYPE);
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};
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////////////////////////////////////////////////////////////////////
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// class PROPMBN:
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// A property item definition living in a GNODEMBN
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////////////////////////////////////////////////////////////////////
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class PROPMBN
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{
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friend class LTBNPROP; // for cloning
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public:
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PROPMBN ();
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PROPMBN ( const PROPMBN & bnp );
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PROPMBN & operator = ( const PROPMBN & bnp );
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// declare standard operators ==, !=, <, >
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DECLARE_ORDERING_OPERATORS(PROPMBN);
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bool operator == ( ZSREF zsrProp ) const;
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bool operator == ( SZC szcProp ) const;
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void Init ( GOBJPROPTYPE & bnpt );
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UINT Count () const;
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UINT FPropType () const
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{ return _fType; }
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ZSREF ZsrPropType () const
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{ return _zsrPropType; }
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ZSREF Zsr ( UINT i = 0 ) const;
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REAL Real ( UINT i = 0 ) const;
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void Reset ();
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void Set ( ZSREF zsr );
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void Set ( REAL r );
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void Add ( ZSREF zsr );
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void Add ( REAL r );
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protected:
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UINT _fType; // Property type flags
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ZSREF _zsrPropType; // Property name
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VZSREF _vzsrStrings; // Array of strings
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VREAL _vrValues; // Array of reals (or integers or choices)
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};
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////////////////////////////////////////////////////////////////////
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// class LTBNPROP:
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// A list of properties
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////////////////////////////////////////////////////////////////////
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class LTBNPROP : public list<PROPMBN>
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{
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public:
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// Find an element
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PROPMBN * PFind ( ZSREF zsrProp );
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const PROPMBN * PFind ( ZSREF zsrProp ) const;
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// Update or add and element; return true if element was already present
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bool Update ( const PROPMBN & bnp );
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// Force the list to contain only unique elements
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bool Uniqify ();
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// Clone from another list with another symbol table
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void Clone ( MODEL & model, const MODEL & modelOther, const LTBNPROP & ltbnOther );
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};
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////////////////////////////////////////////////////////////////////
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// class PROPMGR:
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// Facilitates translation between user declarations of standard
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// properties and internal usage.
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//
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// N.B.: Remember that all ZSREFs are symbiotic to the MODEL of
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// origin and are therefore useless in other networks.
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////////////////////////////////////////////////////////////////////
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class MODEL; // A belief network
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class GNODEMBN; // A node in a belief network
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class PROPMGR
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{
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public:
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PROPMGR ( MODEL & model );
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// Return a pointer to the requested standard property type
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GOBJPROPTYPE * PPropType ( ESTDPROP evp );
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// Return the name of the standard property
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ZSREF ZsrPropType ( ESTDPROP evp );
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// Return the user-defined value of the standard label or -1 if not defined
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int ILblToUser ( ESTDLBL elbl )
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{
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ASSERT_THROW( elbl < ESTDLBL_max, EC_INTERNAL_ERROR, "invalid standard label index" );
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return _vLblToUser[elbl];
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}
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// Return the standard label for the user-defined label value or -1
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int IUserToLbl ( int iLbl )
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{
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return iLbl >= 0 && iLbl < _vUserToLbl.size()
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? _vUserToLbl[iLbl]
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: -1 ;
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}
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// Find a standard property in a property list
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PROPMBN * PFind ( LTBNPROP & ltprop, ESTDPROP estd );
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// Find a standard property in a node's property list
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PROPMBN * PFind ( GNODEMBN & gnd, ESTDPROP estd );
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// Find a standard property in the associated model's property list
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PROPMBN * PFind ( ESTDPROP estd );
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// Return a displayable name for a standard label
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static SZC SzcLbl ( int iLbl );
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protected:
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// The model we're referring to
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MODEL & _model;
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// Pointers to property types for currently used VOI types
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GOBJPROPTYPE * _vPropMap [ ESTDP_max ];
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// Map from predefined label index to user label index
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int _vLblToUser [ ESTDLBL_max ];
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// Map from user label index to predefined label index
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VINT _vUserToLbl;
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// Array of ZSREFs as recorded in the network used during construction
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VZSREF _vzsrPropType;
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HIDE_UNSAFE(PROPMGR);
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};
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#endif // _GMPROP_H_
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