MSFeedColumns.h

This class provides read-only access to the columns in the MSFeed Table. It does the declaration of all the Scalar and ArrayColumns with the correct types, so the application programmer doesn't have to worry about getting those right. There is an access function for every predefined column. Access to non-predefined columns will still have to be done with explicit declarations. See ROMSColumns for an example.

Motivation

See MSColumns for the motivation.

Member Description

ROMSFeedColumns(const MSFeed& msFeed)

Create a columns object that accesses the data in the specified Table

~ROMSFeedColumns()

The destructor does nothing special

const ROScalarColumn<Int>& antennaId() const
const ROScalarColumn<Int>& beamId() const
const ROArrayColumn<Double>& beamOffset() const
const ROArrayQuantColumn<Double>& beamOffsetQuant() const
const ROArrayMeasColumn<MDirection>& beamOffsetMeas() const
const ROScalarColumn<Int>& feedId() const
const ROScalarColumn<Double>& interval() const
const ROScalarQuantColumn<Double>& intervalQuant() const
const ROScalarColumn<Int>& numReceptors() const
const ROArrayColumn<Complex>& polResponse() const
const ROArrayColumn<String>& polarizationType() const
const ROArrayColumn<Double>& position() const
const ROArrayQuantColumn<Double>& positionQuant() const
const ROScalarMeasColumn<MPosition>& positionMeas() const
const ROArrayColumn<Double>& receptorAngle() const
const ROArrayQuantColumn<Double>& receptorAngleQuant() const
const ROScalarColumn<Int>& spectralWindowId() const
const ROScalarColumn<Double>& time() const
const ROScalarQuantColumn<Double>& timeQuant() const
const ROScalarMeasColumn<MEpoch>& timeMeas() const

Access to required columns

const ROScalarColumn<Double>& focusLength() const
const ROScalarQuantColumn<Double>& focusLengthQuant() const
const ROScalarColumn<Int>& phasedFeedId() const

Access to optional columns

uInt nrow() const

Convenience function that returns the number of rows in any of the columns

ROMSFeedColumns()

void attach(const MSFeed& msFeed)

ROMSFeedColumns(const ROMSFeedColumns&)

ROMSFeedColumns& operator=(const ROMSFeedColumns&)

void attachOptionalCols(const MSFeed& msFeed)

class MSFeedColumns: public ROMSFeedColumns

Interface

Public Members

MSFeedColumns(MSFeed& msFeed)

~MSFeedColumns()

ScalarColumn<Int>& antennaId()

ScalarColumn<Int>& beamId()

ArrayColumn<Double>& beamOffset()

ArrayQuantColumn<Double>& beamOffsetQuant()

ArrayMeasColumn<MDirection>& beamOffsetMeas()

ScalarColumn<Int>& feedId()

ScalarColumn<Double>& interval()

ScalarQuantColumn<Double>& intervalQuant()

ScalarColumn<Int>& numReceptors()

ArrayColumn<Complex>& polResponse()

ArrayColumn<String>& polarizationType()

ArrayColumn<Double>& position()

ArrayQuantColumn<Double>& positionQuant()

ScalarMeasColumn<MPosition>& positionMeas()

ArrayColumn<Double>& receptorAngle()

ArrayQuantColumn<Double>& receptorAngleQuant()

ScalarColumn<Int>& spectralWindowId()

ScalarColumn<Double>& time()

ScalarQuantColumn<Double>& timeQuant()

ScalarMeasColumn<MEpoch>& timeMeas()

ScalarColumn<Double>& focusLength()

ScalarQuantColumn<Double>& focusLengthQuant()

ScalarColumn<Int>& phasedFeedId()

const ROScalarColumn<Int>& antennaId() const

const ROScalarColumn<Int>& beamId() const

const ROArrayColumn<Double>& beamOffset() const

const ROArrayQuantColumn<Double>& beamOffsetQuant() const

const ROArrayMeasColumn<MDirection>& beamOffsetMeas() const

const ROScalarColumn<Int>& feedId() const

const ROScalarColumn<Double>& interval() const

const ROScalarQuantColumn<Double>& intervalQuant() const

const ROScalarColumn<Int>& numReceptors() const

const ROArrayColumn<Complex>& polResponse() const

const ROArrayColumn<String>& polarizationType() const

const ROArrayColumn<Double>& position() const

const ROArrayQuantColumn<Double>& positionQuant() const

const ROScalarMeasColumn<MPosition>& positionMeas() const

const ROArrayColumn<Double>& receptorAngle() const

const ROArrayQuantColumn<Double>& receptorAngleQuant() const

const ROScalarColumn<Int>& spectralWindowId() const

const ROScalarColumn<Double>& time() const

const ROScalarQuantColumn<Double>& timeQuant() const

const ROScalarMeasColumn<MEpoch>& timeMeas() const

const ROScalarColumn<Double>& focusLength() const

const ROScalarQuantColumn<Double>& focusLengthQuant() const

const ROScalarColumn<Int>& phasedFeedId() const

void setEpochRef(MEpoch::Types ref, Bool tableMustBeEmpty=True)

void setDirectionRef(MDirection::Types ref)

void setPositionRef(MPosition::Types ref)

Protected Members

MSFeedColumns()

void attach(MSFeed& msFeed)

Private Members

MSFeedColumns(const MSFeedColumns&)

MSFeedColumns& operator=(const MSFeedColumns&)

void attachOptionalCols(MSFeed& msFeed)

Description

Review Status

Reviewed By:: Bob Garwood
Date Reviewed:: 1997/02/01

Prerequisite

MSFeed
ArrayColumn
ScalarColumn

Etymology

MSFeedColumns stands for MeasurementSet Feed Table columns.

Synopsis

This class provides access to the columns in the MSFeed Table, it does the declaration of all the Scalar and ArrayColumns with the correct types, so the application programmer doesn't have to worry about getting those right. There is an access function for every predefined column. Access to non-predefined columns will still have to be done with explicit declarations. See MSColumns for an example.

Motivation

See MSColumns for the motivation.

Member Description

MSFeedColumns(MSFeed& msFeed)

Create a columns object that accesses the data in the specified Table

~MSFeedColumns()

The desctructor does nothing special

ScalarColumn<Int>& antennaId()
ScalarColumn<Int>& beamId()
ArrayColumn<Double>& beamOffset()
ArrayQuantColumn<Double>& beamOffsetQuant()
ArrayMeasColumn<MDirection>& beamOffsetMeas()
ScalarColumn<Int>& feedId()
ScalarColumn<Double>& interval()
ScalarQuantColumn<Double>& intervalQuant()
ScalarColumn<Int>& numReceptors()
ArrayColumn<Complex>& polResponse()
ArrayColumn<String>& polarizationType()
ArrayColumn<Double>& position()
ArrayQuantColumn<Double>& positionQuant()
ScalarMeasColumn<MPosition>& positionMeas()
ArrayColumn<Double>& receptorAngle()
ArrayQuantColumn<Double>& receptorAngleQuant()
ScalarColumn<Int>& spectralWindowId()
ScalarColumn<Double>& time()
ScalarQuantColumn<Double>& timeQuant()
ScalarMeasColumn<MEpoch>& timeMeas()

Read-write access to required columns

ScalarColumn<Double>& focusLength()
ScalarQuantColumn<Double>& focusLengthQuant()
ScalarColumn<Int>& phasedFeedId()

Read-write access to optional columns

const ROScalarColumn<Int>& antennaId() const
const ROScalarColumn<Int>& beamId() const
const ROArrayColumn<Double>& beamOffset() const
const ROArrayQuantColumn<Double>& beamOffsetQuant() const
const ROArrayMeasColumn<MDirection>& beamOffsetMeas() const
const ROScalarColumn<Int>& feedId() const
const ROScalarColumn<Double>& interval() const
const ROScalarQuantColumn<Double>& intervalQuant() const
const ROScalarColumn<Int>& numReceptors() const
const ROArrayColumn<Complex>& polResponse() const
const ROArrayColumn<String>& polarizationType() const
const ROArrayColumn<Double>& position() const
const ROArrayQuantColumn<Double>& positionQuant() const
const ROScalarMeasColumn<MPosition>& positionMeas() const
const ROArrayColumn<Double>& receptorAngle() const
const ROArrayQuantColumn<Double>& receptorAngleQuant() const
const ROScalarColumn<Int>& spectralWindowId() const
const ROScalarColumn<Double>& time() const
const ROScalarQuantColumn<Double>& timeQuant() const
const ROScalarMeasColumn<MEpoch>& timeMeas() const

Read-only access to required columns

const ROScalarColumn<Double>& focusLength() const
const ROScalarQuantColumn<Double>& focusLengthQuant() const
const ROScalarColumn<Int>& phasedFeedId() const

Read-only access to optional columns

void setEpochRef(MEpoch::Types ref, Bool tableMustBeEmpty=True)

set the epoch type for the TIME column.

In principle this function can only be used if the table is empty, otherwise already written values may thereafter have an incorrect reference, offset, or unit. However, it is possible that part of the table gets written before these values are known. In that case the reference, offset, or units can be set by using a False tableMustBeEmpty argument.

void setDirectionRef(MDirection::Types ref)

set the direction type for the BEAM_OFFSET column. This can only be done when the table has no rows. Trying to do so at other times will throw an exception.

void setPositionRef(MPosition::Types ref)

set the position type for the POSITION column. This can only be done when the table has no rows. Trying to do so at other times will throw an exception.