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//%/////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Company, IBM,
// The Open Group, Tivoli Systems
//
// 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: Karl schopmeyer (k.schopmeyer@opengroup.org)
//              Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com)
//              Carol Ann Krug Graves, Hewlett-Packard Company
//                (carolann_graves@hp.com)
//
//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_Value_h
#define Pegasus_Value_h

#include <Pegasus/Common/String.h>
#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/CIMType.h>
#include <Pegasus/Common/CIMObjectPath.h>
#include <Pegasus/Common/CIMDateTime.h>
#include <Pegasus/Common/Exception.h>
#include <Pegasus/Common/Array.h>
#include <Pegasus/Common/Linkage.h>

PEGASUS_NAMESPACE_BEGIN

class CIMValueRep;

/**
    The CIMValue class represents a value of any of the CIM data types
    (see \Ref{CIMType} for a list of valid CIM data types). This class
    encapsulates a union which holds the current value. The class also
    has a type field indicating the type of that value.
*/
class PEGASUS_COMMON_LINKAGE CIMValue
{
public:
    /** Constructor - Creates an NULL CIMValue object set to null and 
        with type CIMType:none and !arraytype.
    */
    CIMValue();

    /** Constructor - Creates a NULL CIMValue object with the type and
        array indicator set as specified.
        @exception TypeMismatchException If the given type is not valid for a
        CIMValue object.
    */
    CIMValue(CIMType type, Boolean isArray, Uint32 arraySize = 0);

    /// Constructor.
    CIMValue(Boolean x);

    /// Constructor.
    CIMValue(Uint8 x);

    /// Constructor.
    CIMValue(Sint8 x);

    /// Constructor.
    CIMValue(Uint16 x);

    /// Constructor.
    CIMValue(Sint16 x);

    /// Constructor.
    CIMValue(Uint32 x);

    /// Constructor.
    CIMValue(Sint32 x);

    /// Constructor.
    CIMValue(Uint64 x);

    /// Constructor.
    CIMValue(Sint64 x);

    /// Constructor.
    CIMValue(Real32 x);

    /// Constructor.
    CIMValue(Real64 x);

    /// Constructor.
    CIMValue(const Char16& x);

    /// Constructor.
    CIMValue(const String& x);

    /// Constructor.
    CIMValue(const CIMDateTime& x);

    /// Constructor.
    CIMValue(const CIMObjectPath& x);

    /// Constructor.
    CIMValue(const Array<Boolean>& x);

    /// Constructor.
    CIMValue(const Array<Uint8>& x);

    /// Constructor.
    CIMValue(const Array<Sint8>& x);

    /// Constructor.
    CIMValue(const Array<Uint16>& x);

    /// Constructor.
    CIMValue(const Array<Sint16>& x);

    /// Constructor.
    CIMValue(const Array<Uint32>& x);

    /// Constructor.
    CIMValue(const Array<Sint32>& x);

    /// Constructor.
    CIMValue(const Array<Uint64>& x);

    /// Constructor.
    CIMValue(const Array<Sint64>& x);

    /// Constructor.
    CIMValue(const Array<Real32>& x);

    /// Constructor.
    CIMValue(const Array<Real64>& x);

    /// Constructor.
    CIMValue(const Array<Char16>& x);

    /// Constructor.
    CIMValue(const Array<String>& x);

    /// Constructor.
    CIMValue(const Array<CIMDateTime>& x);

    /// Constructor.
    CIMValue(const Array<CIMObjectPath>& x);

    /// Constructor.
    CIMValue(const CIMValue& x);

    /// Destructor.
    ~CIMValue();

    /// Operator =
    CIMValue& operator=(const CIMValue& x);

    /** Assigns one CIMValue object to another CIMValue object.
        @param x - CIMValue object to be used for assignment.
    */
    void assign(const CIMValue& x);

    /** Clears the attributes and value of the CIMValue object.
    */
    void clear();

    /** Compares the types of two CIMValues. This
        compares the type field and the array indicators.
        @return true if both are of the same type and both are either arrays
        or not, false otherwise.
        <pre>
            CIMValue a(Boolean(true);
            CIMValue b = a;
            if b.typeCompatible(a)
                ...
        </pre>
    */
    Boolean typeCompatible(const CIMValue& x) const;

    /** Determines if the value is an array.
        @return true if the value is an array, false otherwise.
    */
    Boolean isArray() const;

    /** Determines whether the CIMvalue object is Null. 
        Null is the specific condition where no value has
        yet been set. If a CIMValue object is Null, any get on that 
        object will create an exception.
        @return true if the CIMValue object is Null, false otherwise.
    */
    Boolean isNull() const;

    /** Gets the size of an Array CIMValue.
        @return The number of entries in the array.
    */
    Uint32 getArraySize() const;

    /** Gets the CIMType attribute for the CIMValue.
        @return the CIMType value.
    */
    CIMType getType() const;

    /** Sets the CIMValue a NULL, but with valid CIMType and array 
        characteristics.
        @param type - CIMType for this CIMValue.
        @param isArray - Boolean indicating whether this is an array CIMValue.
        @param arraySize - Optional parameter indicating the array size.
        <pre>
            CIMValue value;             
            value.setNullValue(CIMType::BOOLEAN, false); 
        </pre>
    */
    void setNullValue(CIMType type, Boolean isArray, Uint32 arraySize = 0);

    /** Sets the type, Array attribute and puts the value provided
        into the value of the target CIMValue. 
        <pre>
            CIMValue x;
            x.set(Uint16(9));
        </pre>
    */    
    void set(Boolean x);

    /// 
    void set(Uint8 x);
    ///
    void set(Sint8 x);
    ///
    void set(Uint16 x);
    ///
    void set(Sint16 x);
    ///
    void set(Uint32 x);
    ///
    void set(Sint32 x);
    ///
    void set(Uint64 x);
    ///
    void set(Sint64 x);
    ///
    void set(Real32 x);
    ///
    void set(Real64 x);
    ///
    void set(const Char16& x);
    ///
    void set(const String& x);
    ///
    void set(const CIMDateTime& x);
    ///
    void set(const CIMObjectPath& x);
    ///
    void set(const Array<Boolean>& x);
    ///
    void set(const Array<Uint8>& x);
    ///
    void set(const Array<Sint8>& x);
    ///
    void set(const Array<Uint16>& x);
    ///
    void set(const Array<Sint16>& x);
    ///
    void set(const Array<Uint32>& x);
    ///
    void set(const Array<Sint32>& x);
    ///
    void set(const Array<Uint64>& x);
    ///
    void set(const Array<Sint64>& x);
    ///
    void set(const Array<Real32>& x);
    ///
    void set(const Array<Real64>& x);
    ///
    void set(const Array<Char16>& x);
    ///
    void set(const Array<String>& x);
    ///
    void set(const Array<CIMDateTime>& x);
    ///
    void set(const Array<CIMObjectPath>& x);

    /** Gets the value of a CIMValue.
        Note: Before using get, the caller should use getType () and isNull ()
        to ensure that the value is not null, and is of the correct type.

        @param Variable in which to return the value.
        @exception TypeMismatchException If the CIMValue type is not compatible
                   with the type of the output parameter.
        <pre>
            Uint32 v;
            CIMValue value(CIMValue::UINT32, UINT32(99));
            value.get(v);
        </pre>

        <pre>
            Uint32 v;
            CIMValue value = property.getValue ();
            if ((value.getType () == CIMTYPE_UINT32) && (!value.isNull ()))
                value.get (v);
        </pre>
    */
    void get(Boolean& x) const;
    ///
    void get(Uint8& x) const;
    ///
    void get(Sint8& x) const;
    ///
    void get(Uint16& x) const;
    ///
    void get(Sint16& x) const;
    ///
    void get(Uint32& x) const;
    ///
    void get(Sint32& x) const;
    ///
    void get(Uint64& x) const;
    ///
    void get(Sint64& x) const;
    ///
    void get(Real32& x) const;
    ///
    void get(Real64& x) const;
    ///
    void get(Char16& x) const;
    ///
    void get(String& x) const;
    ///
    void get(CIMDateTime& x) const;
    ///
    void get(CIMObjectPath& x) const;
    ///
    void get(Array<Boolean>& x) const;
    ///
    void get(Array<Uint8>& x) const;
    //////
    void get(Array<Sint8>& x) const;
    ///
    void get(Array<Uint16>& x) const;
    ///
    void get(Array<Sint16>& x) const;
    ///
    void get(Array<Uint32>& x) const;
    ///
    void get(Array<Sint32>& x) const;
    ///
    void get(Array<Uint64>& x) const;
    ///
    void get(Array<Sint64>& x) const;
    ///
    void get(Array<Real32>& x) const;
    ///
    void get(Array<Real64>& x) const;
    ///
    void get(Array<Char16>& x) const;
    ///
    void get(Array<String>& x) const;
    ///
    void get(Array<CIMDateTime>& x) const; 
    ///
    void get(Array<CIMObjectPath>& x) const; 

    /** Compares with another CIMValue object for equality.
        @param x - CIMValue to compare with.
        @return true if they are identical in type, attribute and value,
        false otherwise.
    */
    Boolean equal(const CIMValue& x) const;

    /** Converts the CIMvalue to a string.  Should only be
        used for output purposes.  To get an actual String value, use
        get(String &).
        @return  String output for CIMValue.
        <PRE>
            String test;
            CIMValue value(Boolean(true));
            test = value.toString();  // puts "TRUE" into test
        </PRE>
        */
    String toString() const;

private:

    CIMValueRep* _rep;

    friend class CIMMethodRep;
    friend class CIMParameterRep;
    friend class CIMPropertyRep;
    friend class CIMQualifierRep;
    friend class CIMQualifierDeclRep;
};

/** operator == compares two CIMValue objects for equality.
    @param x - First CIMValue to compare
    @param y - Second CIMValue to compare
    @return true if they are identical in type, attribute and value,
    false otherwise.
*/
PEGASUS_COMMON_LINKAGE Boolean operator==(const CIMValue& x, const CIMValue& y);

/** operator != compares two CIMValue objects for inequality.
    @param x - First CIMValue to compare
    @param y - Second CIMValue to compare
    @return true if they are NOT identical in type, attribute or value,
    false otherwise.
*/
PEGASUS_COMMON_LINKAGE Boolean operator!=(const CIMValue& x, const CIMValue& y);

#define PEGASUS_ARRAY_T CIMValue
# include <Pegasus/Common/ArrayInter.h>
#undef PEGASUS_ARRAY_T

PEGASUS_NAMESPACE_END

#endif /* Pegasus_Value_h */