#include <DataObject.hh>

Inheritance diagram for NullDataObject:

Collaboration diagram for NullDataObject:

Public Member Functions
virtual int	integerValue () const override

virtual SLongWord	longValue () const override

virtual void	setInteger (int value) override

virtual void	setLong (SLongWord value) override

virtual std::string	stringValue () const

virtual void	setString (std::string value) override

virtual double	doubleValue () const

virtual void	setDouble (double value) override

virtual float	floatValue () const

virtual void	setFloat (float value) override

virtual bool	isNull () const

virtual void	setNull () override

Public Member Functions inherited from DataObject
	DataObject ()

	DataObject (int value)

	DataObject (SLongWord value)

	DataObject (double value)

	DataObject (const std::string value)

virtual	~DataObject ()

virtual bool	boolValue () const

virtual void	setBool (bool value)

virtual bool	operator!= (const DataObject &object) const

Static Public Member Functions
static NullDataObject &	instance ()

Private Member Functions
	NullDataObject ()

virtual	~NullDataObject ()

	NullDataObject (const DataObject &obj)

Static Private Attributes
static NullDataObject *	instance_ = NULL

Additional Inherited Members
Public Types inherited from DataObject
enum	OrigType { TYPE_INT, TYPE_STRING, TYPE_DOUBLE, TYPE_FLOAT, TYPE_NULL, TYPE_NOTYPE }

Protected Member Functions inherited from DataObject
OrigType	type () const

bool	intFresh () const

bool	stringFresh () const

bool	doubleFresh () const

bool	floatFresh () const

Detailed Description

Singleton class that represents a null DataObject.

All methods write to error log and abort the program.

Definition at line 128 of file DataObject.hh.

Constructor & Destructor Documentation

◆ NullDataObject() [1/2]

NullDataObject::NullDataObject ( )

private

Constructor.

Definition at line 526 of file DataObject.cc.

526 {

527 }

Referenced by instance().

◆ ~NullDataObject()

NullDataObject::~NullDataObject ( )

privatevirtual

Destructor.

Definition at line 532 of file DataObject.cc.

532 {

533 }

◆ NullDataObject() [2/2]

NullDataObject::NullDataObject ( const DataObject & obj )

private

Member Function Documentation

◆ doubleValue()

double NullDataObject::doubleValue ( ) const

virtual

Returns the double value of DataObject.

If double value is not available, the conversion is done from the original data type. Note that a NULL DataObject is converted to 0.0.

Returns: The double value of DataObject.

Exceptions

NumberFormatException If conversion fails or if DataObject is not initialized.

Reimplemented from DataObject.

Definition at line 603 of file DataObject.cc.

                                   {
     abortWithError("doubleValue()");
     return 0.0;
 }

References abortWithError.

◆ floatValue()

float NullDataObject::floatValue ( ) const

virtual

Returns the float value of DataObject.

If float value is not available, the conversion is done from the original data type. Note that a NULL DataObject is converted to 0.0.

Returns: The float value of DataObject.

Exceptions

NumberFormatException If conversion fails or if DataObject is not initialized.

Reimplemented from DataObject.

Definition at line 609 of file DataObject.cc.

                                  {
     abortWithError("floatValue()");
     return 0.0;
 }

References abortWithError.

◆ instance()

NullDataObject & NullDataObject::instance ( )

static

Returns an instance of NullDataObject (singleton)

Returns: NullDataObject singleton instance.

Definition at line 542 of file DataObject.cc.

                          {
     if (instance_ == NULL) {
         instance_ = new NullDataObject();
     }
     return *instance_;
 }

References instance_, and NullDataObject().

Referenced by InstructionExecution::address(), InstructionExecution::cycle(), RelationalDBQueryResult::data(), and SQLiteQueryResult::data().

Here is the call graph for this function:

◆ integerValue()

int NullDataObject::integerValue ( ) const

overridevirtual

Returns the integer value of DataObject.

If integer value is not available, the conversion is done from the original value type. Note that a NULL DataObject is converted to 0.

Returns: The integer value of DataObject.

Exceptions

NumberFormatException If conversion fails or if DataObject is not initialized.

Reimplemented from DataObject.

Definition at line 585 of file DataObject.cc.

                                    {
     abortWithError("integerValue()");
     return 0;
 }

References abortWithError.

◆ isNull()

bool NullDataObject::isNull ( ) const

virtual

Returns true in case the object represents a NULL value.

Returns: True in case the object's value is NULL.

Reimplemented from DataObject.

Definition at line 615 of file DataObject.cc.

                              {
     abortWithError("isNull()");
     return false;
 }

References abortWithError.

◆ longValue()

SLongWord NullDataObject::longValue ( ) const

overridevirtual

Returns the (long) integer value of DataObject.

If integer value is not available, the conversion is done from the original value type. Note that a NULL DataObject is converted to 0.

Returns: The integer value of DataObject.

Exceptions

NumberFormatException If conversion fails or if DataObject is not initialized.

Reimplemented from DataObject.

Definition at line 591 of file DataObject.cc.

                                 {
     abortWithError("longValue()");
     return 0;
 }

References abortWithError.

◆ setDouble()

void NullDataObject::setDouble ( double value )

overridevirtual

Sets the double value of DataObject.

Parameters

value The double value of DataObject.

Reimplemented from DataObject.

Definition at line 570 of file DataObject.cc.

                                 {
     abortWithError("setDouble()");
 }

References abortWithError.

◆ setFloat()

void NullDataObject::setFloat ( float value )

overridevirtual

Sets the float value of DataObject.

Parameters

value The float value of DataObject.

Reimplemented from DataObject.

Definition at line 575 of file DataObject.cc.

                               {
     abortWithError("setFloat()");
 }

References abortWithError.

◆ setInteger()

void NullDataObject::setInteger ( int value )

overridevirtual

All method implementations of NullDataObject write a message to error log and abort the program.

Reimplemented from DataObject.

Definition at line 555 of file DataObject.cc.

                               {
     abortWithError("setInteger()");
 }

References abortWithError.

◆ setLong()

void NullDataObject::setLong ( SLongWord value )

overridevirtual

Sets the integer value of DataObject.

Parameters

value The integer value.

Reimplemented from DataObject.

Definition at line 560 of file DataObject.cc.

                                  {
     abortWithError("setLong()");
 }

References abortWithError.

◆ setNull()

void NullDataObject::setNull ( )

overridevirtual

Sets the DataObject to null.

Reimplemented from DataObject.

Definition at line 580 of file DataObject.cc.

                         {
     abortWithError("setNull()");
 }

References abortWithError.

◆ setString()

void NullDataObject::setString ( std::string value )

overridevirtual

Sets the string value of DataObject.

Parameters

value The string value.

Reimplemented from DataObject.

Definition at line 565 of file DataObject.cc.

                                    {
     abortWithError("setString()");
 }

References abortWithError.

◆ stringValue()

string NullDataObject::stringValue ( ) const

virtual

Returns the string value of DataObject.

If string value is not available, the conversion is done from the original data type. Note that a NULL DataObject is converted to an empty string.

Returns: The string value of DataObject.

Exceptions

NumberFormatException If conversion fails or if DataObject is not initialized.

Reimplemented from DataObject.

Definition at line 597 of file DataObject.cc.

                                   {
     abortWithError("stringValue()");
     return "";
 }

References abortWithError.

Member Data Documentation

◆ instance_

NullDataObject * NullDataObject::instance_ = NULL

staticprivate

Definition at line 156 of file DataObject.hh.

Referenced by instance().

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

Public Member Functions

Static Public Member Functions

Private Member Functions

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ NullDataObject() [1/2]

◆ ~NullDataObject()

◆ NullDataObject() [2/2]

Member Function Documentation

◆ doubleValue()

◆ floatValue()

◆ instance()

◆ integerValue()

◆ isNull()

◆ longValue()

◆ setDouble()

◆ setFloat()

◆ setInteger()

◆ setLong()

◆ setNull()

◆ setString()

◆ stringValue()

Member Data Documentation

◆ instance_