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BUG#: 4996
TITLE: PEP 233 Embedded Instance Support

DESCRIPTION:

Modifications to add support for the embedded instance type in Pegasus 2.6. Currently the functionality is off by default and must be enabled by defining at build time the variable PEGASUS_EMBEDDED_INSTANCE_SUPPORT with a value of "true".

//%2006////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation, The Open Group.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; VERITAS Software Corporation; The Open Group.
// Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; Symantec Corporation; The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Author: Mike Brasher (mbrasher@bmc.com)
//
// Modified By: Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com)
//              Karl Schopmeyer, (k.schopmeyer@opengroup.org)
//              Carol Ann Krug Graves, Hewlett-Packard Company
//                (carolann_graves@hp.com)
//              Amit K Arora, IBM (amita@in.ibm.com)
//              Adriann Schuur (schuur@de.ibm.com) PEP 164
//              Mike Brasher, Inova Europe (mike-brasher@austin.rr.com)
//
//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_ValueRep_h
#define Pegasus_ValueRep_h

#include <new>
#include "Union.h"
#include "AtomicInt.h"

PEGASUS_NAMESPACE_BEGIN

class CIMValueRep
{
public:

    CIMValueRep();

    CIMValueRep(int*); 

    ~CIMValueRep();

    void release();

    static void ref(const CIMValueRep* rep);

    static void unref(const CIMValueRep* rep);

    AtomicInt refs;
    CIMType type;
    Boolean isArray;
    Boolean isNull;
    Union u;

    static CIMValueRep _emptyRep;
};

inline CIMValueRep::CIMValueRep() : refs(1)
{
} 

inline CIMValueRep::CIMValueRep(int*) :
    refs(2), type(CIMTYPE_BOOLEAN), isArray(false), isNull(true) 
{
    // This constructor is only used by the _emptyRep object.
    memset(&u, 0, sizeof(Union));
}

inline CIMValueRep::~CIMValueRep() 
{
    release();
}

inline void CIMValueRep::ref(const CIMValueRep* rep)
{
    if (rep != &CIMValueRep::_emptyRep)
    {
        ((CIMValueRep*)rep)->refs++;
    }
}

inline void CIMValueRep::unref(const CIMValueRep* rep)
{
    if (rep != &CIMValueRep::_emptyRep && 
	((CIMValueRep*)rep)->refs.decAndTestIfZero())
    {
	delete (CIMValueRep*)rep;
    }
}

//==============================================================================
//
// CIMValueType - template utilities used below.
//
//==============================================================================

// Functions to perform type deduction.
inline CIMType TypeOf(Boolean*) { return CIMTYPE_BOOLEAN; }
inline CIMType TypeOf(Uint8*) { return CIMTYPE_UINT8; }
inline CIMType TypeOf(Sint8*) { return CIMTYPE_SINT8; }
inline CIMType TypeOf(Uint16*) { return CIMTYPE_UINT16; }
inline CIMType TypeOf(Sint16*) { return CIMTYPE_SINT16; }
inline CIMType TypeOf(Uint32*) { return CIMTYPE_UINT32; }
inline CIMType TypeOf(Sint32*) { return CIMTYPE_SINT32; }
inline CIMType TypeOf(Uint64*) { return CIMTYPE_UINT64; }
inline CIMType TypeOf(Sint64*) { return CIMTYPE_SINT64; }
inline CIMType TypeOf(Real32*) { return CIMTYPE_REAL32; }
inline CIMType TypeOf(Real64*) { return CIMTYPE_REAL64; }
inline CIMType TypeOf(Char16*) { return CIMTYPE_CHAR16; }
inline CIMType TypeOf(String*) { return CIMTYPE_STRING; }
inline CIMType TypeOf(CIMDateTime*) { return CIMTYPE_DATETIME; }
inline CIMType TypeOf(CIMObjectPath*) { return CIMTYPE_REFERENCE; }
inline CIMType TypeOf(CIMObject*) { return CIMTYPE_OBJECT; }
#ifdef PEGASUS_EMBEDDED_INSTANCE_SUPPORT
inline CIMType TypeOf(CIMInstance*) { return CIMTYPE_INSTANCE; }
#endif // PEGASUS_EMBEDDED_INSTANCE_SUPPORT

inline bool IsRaw(Boolean*) { return true; }
inline bool IsRaw(Uint8*) { return true; }
inline bool IsRaw(Sint8*) { return true; }
inline bool IsRaw(Uint16*) { return true; }
inline bool IsRaw(Sint16*) { return true; }
inline bool IsRaw(Uint32*) { return true; }
inline bool IsRaw(Sint32*) { return true; }
inline bool IsRaw(Uint64*) { return true; }
inline bool IsRaw(Sint64*) { return true; }
inline bool IsRaw(Real32*) { return true; }
inline bool IsRaw(Real64*) { return true; }
inline bool IsRaw(Char16*) { return true; }
inline bool IsRaw(String*) { return false; }
inline bool IsRaw(CIMDateTime*) { return false; }
inline bool IsRaw(CIMObjectPath*) { return false; }
inline bool IsRaw(CIMObject*) { return false; }
#ifdef PEGASUS_EMBEDDED_INSTANCE_SUPPORT
inline bool IsRaw(CIMInstance*) { return false; }
#endif // PEGASUS_EMBEDDED_INSTANCE_SUPPORT

template<class T>
struct CIMValueType
{
public:

    static T* ptr(const CIMValueRep* rep)
    {
	return (T*)(&rep->u);
    }

    static T& ref(const CIMValueRep* rep)
    {
	return *((T*)((void*)&rep->u));
    }

    static Array<T>* aptr(const CIMValueRep* rep)
    {
	return (Array<T>*)(&rep->u);
    }

    static Array<T>& aref(const CIMValueRep* rep)
    {
	return *((Array<T>*)((void*)&rep->u));
    }

    static void defaultConstruct(CIMValueRep* rep)
    {
	if (IsRaw((T*)0))
	    rep->u._uint64Value = (Uint64)0;
	else
	    new((T*)((void*)&rep->u)) T();
    }

    static void copyConstruct(CIMValueRep* rep, const T& x)
    {
	new((T*)((void*)&rep->u)) T(x);
    }

    static void copyConstructArray(CIMValueRep* rep, const Array<T>& x)
    {
	new((Array<T>*)((void*)&rep->u)) Array<T>(x);
    }

    static void constructArrayWithSize(CIMValueRep* rep, Uint32 arraySize)
    {
	new((Array<T>*)((void*)&rep->u)) Array<T>(arraySize);
    }

    static void destruct(CIMValueRep* rep)
    {
	((T*)((void*)&rep->u))->~T();
    }

    static void destructArray(CIMValueRep* rep)
    {
	((Array<T>*)((void*)&rep->u))->~Array<T>();
    }

    static void setNull(
	CIMValueRep* rep, CIMType type_, bool isArray_, Uint32 arraySize_)
    {
	rep->type = type_;
	rep->isArray = isArray_;
	rep->isNull = true;

	if (isArray_)
	    constructArrayWithSize(rep, arraySize_);
	else
	    defaultConstruct(rep);
    }

    static void set(CIMValueRep* rep, const T& x)
    {
	rep->type = TypeOf((T*)0);
	rep->isArray = false;
	rep->isNull = false;
	copyConstruct(rep, x);
    }

    static void setArray(CIMValueRep* rep, const Array<T>& x)
    {
	rep->type = TypeOf((T*)0);
	rep->isArray = true;
	rep->isNull = false;
	copyConstructArray(rep, x);
    }

    static Uint32 arraySize(CIMValueRep* rep)
    {
	return aref(rep).size();
    }

    static bool equal(const CIMValueRep* r1, const CIMValueRep* r2)
    {
	return ref(r1) == ref(r2);
    }

    static bool equalArray(const CIMValueRep* r1, const CIMValueRep* r2)
    {
	return aref(r1) == aref(r2);
    }
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_ValueRep_h */