Library: Data
Package: DataCore
Header: Poco/Data/Extraction.h
Description
Inheritance
Direct Base Classes: AbstractExtraction
All Base Classes: AbstractExtraction
Member Summary
Member Functions: canExtract, createPreparation, extract, isNull, numOfColumnsHandled, numOfRowsAllowed, numOfRowsHandled, reset
Inherited Functions: canExtract, createPreparation, extract, getEmptyStringIsNull, getExtractor, getForceEmptyString, getHeldType, getLimit, isBulk, isNull, isValueNull, numOfColumnsHandled, numOfRowsAllowed, numOfRowsHandled, position, reset, setEmptyStringIsNull, setExtractor, setForceEmptyString, setHeldType, setLimit
Types Aliases
Ptr
using Ptr = SharedPtr < Type >;
Type
using Type = Extraction < ValType >;
ValPtr
using ValPtr = SharedPtr < ValType >;
ValType
using ValType = T;
Constructors
Extraction 
Extraction(
T & result,
const Position & pos = Position (0)
);
Creates an Extraction object at specified position. Uses an empty object T as default value.
Extraction
Extraction(
T & result,
const T & def,
const Position & pos = Position (0)
);
Creates an Extraction object at specified position. Uses the provided def object as default value.
Destructor
~Extraction 
~Extraction() override = default;
Destroys the Extraction object.
Member Functions
canExtract
bool canExtract() const override;
createPreparation
AbstractPreparation::Ptr createPreparation(
AbstractPreparator::Ptr & pPrep,
std::size_t pos
) override;
extract
std::size_t extract(
std::size_t pos
) override;
isNull
bool isNull(
std::size_t = 0
) const override;
numOfColumnsHandled
std::size_t numOfColumnsHandled() const override;
numOfRowsAllowed
std::size_t numOfRowsAllowed() const override;
numOfRowsHandled
std::size_t numOfRowsHandled() const override;
reset
void reset() override;
See also: Poco::Data::AbstractExtraction::reset()