TableMeasDescBase.h

AipsError during reconstruction if the column doesn't contain a MEASINFO record.
AipsError during reconstruction if the column has a MEASINFO but it Measure type is invalid.

Member Description

TableMeasDescBase()

Null constructor.

TableMeasDescBase (const TableMeasValueDesc&, const TableMeasRefDesc&)

Constructor with value and reference descriptors. Note that setMeasType is always called by the derived class.

TableMeasDescBase (const TableMeasDescBase& that)

Copy constructor.

virtual ~TableMeasDescBase()

virtual TableMeasDescBase* clone() const

Clone the object.

TableMeasDescBase& operator= (const TableMeasDescBase& that)

Assignment operator.

void write (TableDesc&)
void write (Table&)

Makes the descriptor persistent.

const String& columnName() const

Get the name of the underlying column.

uInt getRefCode() const

Return the reference code.

Bool isRefCodeVariable() const

Returns True if the reference varies per row.

const String& refColumnName() const

Returns the name of the ref code column when the ref code is variable. The null string is returned if the ref code is not variable.

const TableMeasRefDesc& getRefDesc()

Returns a reference to its measure reference descriptor.

const String& offsetColumnName() const

Get the name of the offset column. Empty string is returned if no offset.

Bool hasOffset() const

Returns True if an offset has been defined.

Bool isOffsetVariable() const

Returns True if the offset is variable.

Bool isOffsetArray() const

Returns True if the offset is variable and is stored in an ArrayMeasColumn, i.e., offsets are stored per element.

const Measure& getOffset() const

Returns a reference to the offset.

const String& type() const

Returns the descriptors measure type as a String.

uInt refCode (const String& refString) const

Returns the reference code for this object given a string. Throws an exception if the refString is invalid for this object.

const String& refType (uInt refCode) const

Translates the refCode for the descriptors measure type.

const Vector<Unit>& getUnits() const

Return the Units of the Measure values

void resetRefCode (uInt refCode)
void resetOffset (const Measure& offset)
void resetUnits (const Vector<Unit>& units)

Reset the refCode, offset, or units. It overwrites the value used when defining the TableMeasDesc. It is only possible if it was defined as fixed for the entire column.

static TableMeasDescBase* reconstruct (const Table& tab, const String& columnName)

Reconstructs the object for the given table and column name.

static Bool hasMeasures (const ROTableColumn& column)

Does this column contain table measures?

void setMeasUnits (const Measure& meas, const Vector<Quantum<Double> >& val, const Vector<Unit>& units)

Set the measure and possible units.