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casacore::ValueHolder Class Reference

A holder for a value of any basic Casacore data type. More...

#include <ValueHolder.h>

Public Member Functions

 ValueHolder ()
 Construct a null object. More...
 
 ValueHolder (Bool value)
 Create the object for the given value. More...
 
 ValueHolder (uChar value)
 
 ValueHolder (Short value)
 
 ValueHolder (uShort value)
 
 ValueHolder (Int value)
 
 ValueHolder (uInt value)
 
 ValueHolder (Int64 value)
 
 ValueHolder (Float value)
 
 ValueHolder (Double value)
 
 ValueHolder (const Complex &value)
 
 ValueHolder (const DComplex &value)
 
 ValueHolder (const Char *value)
 
 ValueHolder (const String &value)
 
 ValueHolder (const Array< Bool > &value)
 
 ValueHolder (const Array< uChar > &value)
 
 ValueHolder (const Array< Short > &value)
 
 ValueHolder (const Array< uShort > &value)
 
 ValueHolder (const Array< Int > &value)
 
 ValueHolder (const Array< uInt > &value)
 
 ValueHolder (const Array< Int64 > &value)
 
 ValueHolder (const Array< Float > &value)
 
 ValueHolder (const Array< Double > &value)
 
 ValueHolder (const Array< Complex > &value)
 
 ValueHolder (const Array< DComplex > &value)
 
 ValueHolder (const Array< String > &value)
 
 ValueHolder (const Record &value)
 
 ValueHolder (uInt ndim, Bool dummy)
 Create an empty N-dim array (gets type TpOther). More...
 
 ValueHolder (ValueHolderRep *rep)
 Create a ValueHolder from a ValueHolderRep. More...
 
 ValueHolder (const ValueHolder &)
 Copy constructor (reference semantics). More...
 
 ~ValueHolder ()
 Destructor. More...
 
ValueHolder & operator= (const ValueHolder &)
 Assignment (reference semantics). More...
 
Bool isNull () const
 Is this a null object? More...
 
DataType dataType () const
 Get the data type (as defined in DataType.h). More...
 
Bool asBool () const
 Get the value. More...
 
uChar asuChar () const
 
Short asShort () const
 
uShort asuShort () const
 
Int asInt () const
 
uInt asuInt () const
 
Int64 asInt64 () const
 
Float asFloat () const
 
Double asDouble () const
 
Complex asComplex () const
 
DComplex asDComplex () const
 
const String & asString () const
 
const Array< Bool > asArrayBool () const
 
const Array< uChar > asArrayuChar () const
 
const Array< Short > asArrayShort () const
 
const Array< uShort > asArrayuShort () const
 
const Array< Int > asArrayInt () const
 
const Array< uInt > asArrayuInt () const
 
const Array< Int64 > asArrayInt64 () const
 
const Array< Float > asArrayFloat () const
 
const Array< Double > asArrayDouble () const
 
const Array< Complex > asArrayComplex () const
 
const Array< DComplex > asArrayDComplex () const
 
const Array< String > asArrayString () const
 
const Record & asRecord () const
 
void getValue (Bool &value) const
 Get the data in a way useful for templates. More...
 
void getValue (uChar &value) const
 
void getValue (Short &value) const
 
void getValue (uShort &value) const
 
void getValue (Int &value) const
 
void getValue (uInt &value) const
 
void getValue (Int64 &value) const
 
void getValue (Float &value) const
 
void getValue (Double &value) const
 
void getValue (Complex &value) const
 
void getValue (DComplex &value) const
 
void getValue (String &value) const
 
void getValue (Array< Bool > &value) const
 
void getValue (Array< uChar > &value) const
 
void getValue (Array< Short > &value) const
 
void getValue (Array< uShort > &value) const
 
void getValue (Array< Int > &value) const
 
void getValue (Array< uInt > &value) const
 
void getValue (Array< Int64 > &value) const
 
void getValue (Array< Float > &value) const
 
void getValue (Array< Double > &value) const
 
void getValue (Array< Complex > &value) const
 
void getValue (Array< DComplex > &value) const
 
void getValue (Array< String > &value) const
 
void toRecord (Record &, const RecordFieldId &) const
 Put the value as a field in a record. More...
 
bool operator< (const ValueHolder &right) const
 Compare two ValueHolder objects. More...
 

Static Public Member Functions

static ValueHolder fromRecord (const Record &, const RecordFieldId &)
 Construct the object from the value in a record. More...
 

Private Attributes

CountedPtr< ValueHolderRep > itsRep
 

Friends

std::ostream & operator<< (std::ostream &os, const ValueHolder &vh)
 Write the ValueHolder to an output stream. More...
 

Detailed Description

A holder for a value of any basic Casacore data type.

Intended use:

Public interface

Review Status

Test programs:
tValueHolder

Synopsis

Class ValueHolder is meant to be used for holding a single Casacore value. The value can be scalar or an array of any basic type (including complex and string). Also a Record value is possible. In this way varying typed data (e.g. the result of getCell in the table DO) can be packed in a strongly typed variable.
All unsigned integer type values are kept as signed 32-bit integers because scripting languages usually only support those types.

ValueHolder is an envelope class that holds a counted-referenced letter object ValueHolderRep.

Motivation

This class comes handy in passing arbitrary values from a DO to its environment.

Definition at line 67 of file ValueHolder.h.

Constructor & Destructor Documentation

casacore::ValueHolder::ValueHolder ( )
inline

Construct a null object.

Definition at line 71 of file ValueHolder.h.

Referenced by fromRecord().

casacore::ValueHolder::ValueHolder ( Bool  value)
explicit

Create the object for the given value.

casacore::ValueHolder::ValueHolder ( uChar  value)
explicit
casacore::ValueHolder::ValueHolder ( Short  value)
explicit
casacore::ValueHolder::ValueHolder ( uShort  value)
explicit
casacore::ValueHolder::ValueHolder ( Int  value)
explicit
casacore::ValueHolder::ValueHolder ( uInt  value)
explicit
casacore::ValueHolder::ValueHolder ( Int64  value)
explicit
casacore::ValueHolder::ValueHolder ( Float  value)
explicit
casacore::ValueHolder::ValueHolder ( Double  value)
explicit
casacore::ValueHolder::ValueHolder ( const Complex &  value)
explicit
casacore::ValueHolder::ValueHolder ( const DComplex &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Char *  value)
explicit
casacore::ValueHolder::ValueHolder ( const String &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< Bool > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< uChar > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< Short > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< uShort > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< Int > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< uInt > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< Int64 > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< Float > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< Double > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< Complex > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< DComplex > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Array< String > &  value)
explicit
casacore::ValueHolder::ValueHolder ( const Record &  value)
explicit
casacore::ValueHolder::ValueHolder ( uInt  ndim,
Bool  dummy 
)

Create an empty N-dim array (gets type TpOther).

casacore::ValueHolder::ValueHolder ( ValueHolderRep *  rep)
inlineexplicit

Create a ValueHolder from a ValueHolderRep.

It takes over the pointer and deletes it in the destructor.

Definition at line 109 of file ValueHolder.h.

casacore::ValueHolder::ValueHolder ( const ValueHolder &  )

Copy constructor (reference semantics).

casacore::ValueHolder::~ValueHolder ( )
inline

Destructor.

Definition at line 117 of file ValueHolder.h.

Member Function Documentation

const Array< Bool > casacore::ValueHolder::asArrayBool ( ) const
inline

Definition at line 255 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< Complex > casacore::ValueHolder::asArrayComplex ( ) const
inline

Definition at line 273 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< DComplex > casacore::ValueHolder::asArrayDComplex ( ) const
inline

Definition at line 275 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< Double > casacore::ValueHolder::asArrayDouble ( ) const
inline

Definition at line 271 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< Float > casacore::ValueHolder::asArrayFloat ( ) const
inline

Definition at line 269 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< Int > casacore::ValueHolder::asArrayInt ( ) const
inline

Definition at line 263 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< Int64 > casacore::ValueHolder::asArrayInt64 ( ) const
inline

Definition at line 267 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< Short > casacore::ValueHolder::asArrayShort ( ) const
inline

Definition at line 259 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< String > casacore::ValueHolder::asArrayString ( ) const
inline

Definition at line 277 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< uChar > casacore::ValueHolder::asArrayuChar ( ) const
inline

Definition at line 257 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< uInt > casacore::ValueHolder::asArrayuInt ( ) const
inline

Definition at line 265 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Array< uShort > casacore::ValueHolder::asArrayuShort ( ) const
inline

Definition at line 261 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

Bool casacore::ValueHolder::asBool ( ) const
inline

Get the value.

If possible, it converts the data as needed.

Definition at line 231 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

Complex casacore::ValueHolder::asComplex ( ) const
inline

Definition at line 249 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

DComplex casacore::ValueHolder::asDComplex ( ) const
inline

Definition at line 251 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

Double casacore::ValueHolder::asDouble ( ) const
inline

Definition at line 247 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

Float casacore::ValueHolder::asFloat ( ) const
inline

Definition at line 245 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

Int casacore::ValueHolder::asInt ( ) const
inline

Definition at line 239 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

Int64 casacore::ValueHolder::asInt64 ( ) const
inline

Definition at line 243 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

const Record & casacore::ValueHolder::asRecord ( ) const
inline

Definition at line 279 of file ValueHolder.h.

References itsRep.

Short casacore::ValueHolder::asShort ( ) const
inline

Definition at line 235 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

const String & casacore::ValueHolder::asString ( ) const
inline

Definition at line 253 of file ValueHolder.h.

References itsRep.

Referenced by getValue().

uChar casacore::ValueHolder::asuChar ( ) const
inline

Definition at line 233 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

uInt casacore::ValueHolder::asuInt ( ) const
inline

Definition at line 241 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

uShort casacore::ValueHolder::asuShort ( ) const
inline

Definition at line 237 of file ValueHolder.h.

References itsRep.

Referenced by casacore::python::numpy::getScalar(), and getValue().

DataType casacore::ValueHolder::dataType ( ) const
inline

Get the data type (as defined in DataType.h).

Note that TpOther is returned for an empty untyped array.

Definition at line 224 of file ValueHolder.h.

References itsRep.

ValueHolder casacore::ValueHolder::fromRecord ( const Record &  rec,
const RecordFieldId &  id 
)
inlinestatic

Construct the object from the value in a record.

Definition at line 228 of file ValueHolder.h.

References casacore::ValueHolderRep::fromRecord(), and ValueHolder().

void casacore::ValueHolder::getValue ( Bool &  value) const
inline

Get the data in a way useful for templates.

If possible, it converts the the data as needed.

Definition at line 164 of file ValueHolder.h.

References asBool().

void casacore::ValueHolder::getValue ( uChar &  value) const
inline

Definition at line 165 of file ValueHolder.h.

References asuChar().

void casacore::ValueHolder::getValue ( Short &  value) const
inline

Definition at line 166 of file ValueHolder.h.

References asShort().

void casacore::ValueHolder::getValue ( uShort &  value) const
inline

Definition at line 167 of file ValueHolder.h.

References asuShort().

void casacore::ValueHolder::getValue ( Int &  value) const
inline

Definition at line 168 of file ValueHolder.h.

References asInt().

void casacore::ValueHolder::getValue ( uInt &  value) const
inline

Definition at line 169 of file ValueHolder.h.

References asuInt().

void casacore::ValueHolder::getValue ( Int64 &  value) const
inline

Definition at line 170 of file ValueHolder.h.

References asInt64().

void casacore::ValueHolder::getValue ( Float &  value) const
inline

Definition at line 171 of file ValueHolder.h.

References asFloat().

void casacore::ValueHolder::getValue ( Double &  value) const
inline

Definition at line 172 of file ValueHolder.h.

References asDouble().

void casacore::ValueHolder::getValue ( Complex &  value) const
inline

Definition at line 173 of file ValueHolder.h.

References asComplex().

void casacore::ValueHolder::getValue ( DComplex &  value) const
inline

Definition at line 174 of file ValueHolder.h.

References asDComplex().

void casacore::ValueHolder::getValue ( String &  value) const
inline

Definition at line 175 of file ValueHolder.h.

References asString().

void casacore::ValueHolder::getValue ( Array< Bool > &  value) const
inline

Definition at line 176 of file ValueHolder.h.

References asArrayBool(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< uChar > &  value) const
inline

Definition at line 178 of file ValueHolder.h.

References asArrayuChar(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< Short > &  value) const
inline

Definition at line 180 of file ValueHolder.h.

References asArrayShort(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< uShort > &  value) const
inline

Definition at line 182 of file ValueHolder.h.

References asArrayuShort(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< Int > &  value) const
inline

Definition at line 184 of file ValueHolder.h.

References asArrayInt(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< uInt > &  value) const
inline

Definition at line 186 of file ValueHolder.h.

References asArrayuInt(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< Int64 > &  value) const
inline

Definition at line 188 of file ValueHolder.h.

References asArrayInt64(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< Float > &  value) const
inline

Definition at line 190 of file ValueHolder.h.

References asArrayFloat(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< Double > &  value) const
inline

Definition at line 192 of file ValueHolder.h.

References asArrayDouble(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< Complex > &  value) const
inline

Definition at line 194 of file ValueHolder.h.

References asArrayComplex(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< DComplex > &  value) const
inline

Definition at line 196 of file ValueHolder.h.

References asArrayDComplex(), and casacore::Array< T >::reference().

void casacore::ValueHolder::getValue ( Array< String > &  value) const
inline

Definition at line 198 of file ValueHolder.h.

References asArrayString(), and casacore::Array< T >::reference().

Bool casacore::ValueHolder::isNull ( ) const
inline

Is this a null object?

Definition at line 124 of file ValueHolder.h.

References itsRep.

bool casacore::ValueHolder::operator< ( const ValueHolder &  right) const
inline

Compare two ValueHolder objects.

They must have the same data type.

Definition at line 210 of file ValueHolder.h.

References itsRep.

ValueHolder& casacore::ValueHolder::operator= ( const ValueHolder &  )

Assignment (reference semantics).

void casacore::ValueHolder::toRecord ( Record &  rec,
const RecordFieldId &  id 
) const
inline

Put the value as a field in a record.

Definition at line 226 of file ValueHolder.h.

References itsRep.

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  os,
const ValueHolder &  vh 
)
friend

Write the ValueHolder to an output stream.

Arrays are written as normal arrays using ArrayIO.h.

Definition at line 215 of file ValueHolder.h.

Member Data Documentation

CountedPtr<ValueHolderRep> casacore::ValueHolder::itsRep
private

Definition at line 220 of file ValueHolder.h.

Referenced by asArrayBool(), asArrayComplex(), asArrayDComplex(), asArrayDouble(), asArrayFloat(), asArrayInt(), asArrayInt64(), asArrayShort(), asArrayString(), asArrayuChar(), asArrayuInt(), asArrayuShort(), asBool(), asComplex(), asDComplex(), asDouble(), asFloat(), asInt(), asInt64(), asRecord(), asShort(), asString(), asuChar(), asuInt(), asuShort(), dataType(), isNull(), operator<(), and toRecord().

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