The class implementing TempLattice. More...

#include <TempLatticeImpl.h>

Public Member Functions
	TempLatticeImpl ()
	The default constructor creates a TempLatticeImpl containing a default ArrayLattice object. More...

	TempLatticeImpl (const TiledShape &shape, Int maxMemoryInMB)
	Create a TempLatticeImpl of the specified shape. More...

	TempLatticeImpl (const TiledShape &shape, Double maxMemoryInMB)

	~TempLatticeImpl ()
	The destructor removes the Lattice from memory and if necessary disk. More...

Bool	isPaged () const
	Is the TempLattice paged to disk? More...

Bool	canReferenceArray () const
	Can the lattice data be referenced as an array section? More...

Bool	isWritable () const
	Is the TempLattice writable? It should be. More...

void	flush ()
	Flush the data. More...

void	tempClose ()
	Close the Lattice temporarily (if it is paged to disk). More...

void	reopen ()
	If needed, reopen a temporarily closed TempLatticeImpl. More...

IPosition	shape () const
	Return the shape of the Lattice including all degenerate axes. More...

void	set (const T &value)
	Set all of the elements in the Lattice to the given value. More...

void	apply (T(*function)(T))
	Replace every element, x, of the Lattice with the result of f(x). More...

void	apply (T(*function)(const T &))

void	apply (const Functional< T, T > &function)

uInt	advisedMaxPixels () const
	This function returns the recommended maximum number of pixels to include in the cursor of an iterator. More...

IPosition	doNiceCursorShape (uInt maxPixels)
	Get the best cursor shape. More...

uInt	maximumCacheSize () const
	Maximum size - not necessarily all used. More...

void	setMaximumCacheSize (uInt howManyPixels)
	Set the maximum (allowed) cache size as indicated. More...

void	setCacheSizeFromPath (const IPosition &sliceShape, const IPosition &windowStart, const IPosition &windowLength, const IPosition &axisPath)
	Set the cache size as to "fit" the indicated path. More...

void	setCacheSizeInTiles (uInt howManyTiles)
	Set the actual cache size for this Array to be be big enough for the indicated number of tiles. More...

void	clearCache ()
	Clears and frees up the caches, but the maximum allowed cache size is unchanged from when setCacheSize was called. More...

void	showCacheStatistics (ostream &os) const
	Report on cache success. More...

T	getAt (const IPosition &where) const
	Get or put a single element in the lattice. More...

void	putAt (const T &value, const IPosition &where)

Bool	ok () const
	Check class internals - used for debugging. More...

LatticeIterInterface< T > *	makeIter (const LatticeNavigator &navigator, Bool useRef) const
	This function is used by the LatticeIterator class to generate an iterator of the correct type for this Lattice. More...

Bool	doGetSlice (Array< T > &buffer, const Slicer &section)
	Do the actual getting of an array of values. More...

void	doPutSlice (const Array< T > &sourceBuffer, const IPosition &where, const IPosition &stride)
	Do the actual getting of an array of values. More...

void	doReopen () const
	Do the reopen of the table (if not open already). More...

Private Member Functions
	TempLatticeImpl (const TempLatticeImpl< T > &other)
	The copy constructor cannot be used. More...

TempLatticeImpl< T > &	operator= (const TempLatticeImpl< T > &other)
	The assignment operator cannot be used. More...

void	init (const TiledShape &shape, Double maxMemoryInMB=-1)
	Initialize the object. More...

void	tempReopen () const
	Do the actual reopen of the temporarily closed table (if not open already). More...

void	deleteTable ()
	Make sure that the temporary table gets deleted. More...

Private Attributes
Table *	itsTablePtr

CountedPtr< Lattice< T > >	itsLatticePtr

String	itsTableName

Bool	itsIsClosed

Detailed Description

template<class T>
class casacore::TempLatticeImpl< T >

The class implementing TempLattice.

Intended use:

Internal

Review Status

Reviewed By:: Peter Barnes
Date Reviewed:: 1999/10/30
Test programs:: tTempLattice

Prerequisite

Lattice

Synopsis

The class is used as CountedPtr<TempLatticeImpl> in class TempLattice. In that way the making a copy of a TempLattice uses the same object underneath. This was needed to have a correct implementation of tempClose. Otherwise when deleting a copy of a TempLattice, that destructor would delete the underlying table and the original TempLattice could not reopen it.

Definition at line 69 of file TempLatticeImpl.h.

Constructor & Destructor Documentation

template<class T>

casacore::TempLatticeImpl< T >::TempLatticeImpl ( )

The default constructor creates a TempLatticeImpl containing a default ArrayLattice object.

template<class T>

casacore::TempLatticeImpl< T >::TempLatticeImpl	(	const TiledShape &	shape,
		Int	maxMemoryInMB
	)

Create a TempLatticeImpl of the specified shape.

You can specify how much memory the Lattice can consume before it becomes disk based by giving a non-negative value to the maxMemoryInMB argument. Otherwise it will assume it can use up to 25% of the memory on your machine as defined in aipsrc (this algorithm may change). Setting maxMemoryInMB to zero will force the lattice to disk.

template<class T>

casacore::TempLatticeImpl< T >::TempLatticeImpl	(	const TiledShape &	shape,
		Double	maxMemoryInMB
	)

template<class T>

casacore::TempLatticeImpl< T >::~TempLatticeImpl ( )

The destructor removes the Lattice from memory and if necessary disk.

template<class T>

casacore::TempLatticeImpl< T >::TempLatticeImpl ( const TempLatticeImpl< T > & other )

private

The copy constructor cannot be used.

Member Function Documentation

template<class T>

uInt casacore::TempLatticeImpl< T >::advisedMaxPixels ( ) const

inline

This function returns the recommended maximum number of pixels to include in the cursor of an iterator.

Definition at line 145 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::apply ( T(*)(T) function )

inline

Replace every element, x, of the Lattice with the result of f(x).

You must pass in the address of the function – so the function must be declared and defined in the scope of your program. All versions of apply require a function that accepts a single argument of type T (the Lattice template type) and return a result of the same type. The first apply expects a function with an argument passed by value; the second expects the argument to be passed by const reference; the third requires an instance of the class Functional<T,T>. The first form ought to run faster for the built-in types, which may be an issue for large Lattices stored in memory, where disk access is not an issue.

Definition at line 135 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::apply ( T(*)(const T &) function )

inline

Definition at line 137 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::apply ( const Functional< T, T > & function )

inline

Definition at line 139 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

Bool casacore::TempLatticeImpl< T >::canReferenceArray ( ) const

inline

Can the lattice data be referenced as an array section?

Definition at line 95 of file TempLatticeImpl.h.

References casacore::String::empty(), and casacore::TempLatticeImpl< T >::itsTableName.

template<class T>

void casacore::TempLatticeImpl< T >::clearCache ( )

inline

Clears and frees up the caches, but the maximum allowed cache size is unchanged from when setCacheSize was called.

Definition at line 178 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::deleteTable ( )

private

Make sure that the temporary table gets deleted.

template<class T>

Bool casacore::TempLatticeImpl< T >::doGetSlice	(	Array< T > &	buffer,
		const Slicer &	section
	)

inline

Do the actual getting of an array of values.

Definition at line 206 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

IPosition casacore::TempLatticeImpl< T >::doNiceCursorShape ( uInt maxPixels )

inline

Get the best cursor shape.

Definition at line 149 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::doPutSlice	(	const Array< T > &	sourceBuffer,
		const IPosition &	where,
		const IPosition &	stride
	)

inline

Do the actual getting of an array of values.

Definition at line 210 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::doReopen ( ) const

inline

Do the reopen of the table (if not open already).

Definition at line 216 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::itsIsClosed, and casacore::TempLatticeImpl< T >::tempReopen().

Referenced by casacore::TempLatticeImpl< T >::advisedMaxPixels(), casacore::TempLatticeImpl< T >::apply(), casacore::TempLatticeImpl< T >::doGetSlice(), casacore::TempLatticeImpl< T >::doNiceCursorShape(), casacore::TempLatticeImpl< T >::doPutSlice(), casacore::TempLatticeImpl< T >::getAt(), casacore::TempLatticeImpl< T >::makeIter(), casacore::TempLatticeImpl< T >::ok(), casacore::TempLatticeImpl< T >::putAt(), casacore::TempLatticeImpl< T >::set(), and casacore::TempLatticeImpl< T >::shape().

template<class T>

void casacore::TempLatticeImpl< T >::flush ( )

inline

Flush the data.

Definition at line 103 of file TempLatticeImpl.h.

References casacore::Table::flush(), and casacore::TempLatticeImpl< T >::itsTablePtr.

template<class T>

T casacore::TempLatticeImpl< T >::getAt ( const IPosition & where ) const

inline

Get or put a single element in the lattice.

Note that Lattice::operator() can also be used to get a single element.

Definition at line 188 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::init	(	const TiledShape &	shape,
		Double	maxMemoryInMB = `-1`
	)

private

Initialize the object.

template<class T>

Bool casacore::TempLatticeImpl< T >::isPaged ( ) const

inline

Is the TempLattice paged to disk?

Definition at line 91 of file TempLatticeImpl.h.

References casacore::String::empty(), and casacore::TempLatticeImpl< T >::itsTableName.

template<class T>

Bool casacore::TempLatticeImpl< T >::isWritable ( ) const

inline

Is the TempLattice writable? It should be.

Definition at line 99 of file TempLatticeImpl.h.

References casacore::True.

template<class T>

LatticeIterInterface<T>* casacore::TempLatticeImpl< T >::makeIter	(	const LatticeNavigator &	navigator,
		Bool	useRef
	)		const

inline

This function is used by the LatticeIterator class to generate an iterator of the correct type for this Lattice.

Not recommended for general use.

Definition at line 201 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

uInt casacore::TempLatticeImpl< T >::maximumCacheSize ( ) const

inline

Maximum size - not necessarily all used.

In pixels.

Definition at line 153 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

Bool casacore::TempLatticeImpl< T >::ok ( ) const

inline

Check class internals - used for debugging.

Should always return True

Definition at line 195 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

TempLatticeImpl<T>& casacore::TempLatticeImpl< T >::operator= ( const TempLatticeImpl< T > & other )

private

The assignment operator cannot be used.

template<class T>

void casacore::TempLatticeImpl< T >::putAt	(	const T &	value,
		const IPosition &	where
	)

inline

Definition at line 190 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::reopen ( )

If needed, reopen a temporarily closed TempLatticeImpl.

template<class T>

void casacore::TempLatticeImpl< T >::set ( const T & value )

inline

Set all of the elements in the Lattice to the given value.

Definition at line 120 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::doReopen(), and casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::setCacheSizeFromPath	(	const IPosition &	sliceShape,
		const IPosition &	windowStart,
		const IPosition &	windowLength,
		const IPosition &	axisPath
	)

inline

Set the cache size as to "fit" the indicated path.

Definition at line 161 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::setCacheSizeInTiles ( uInt howManyTiles )

inline

Set the actual cache size for this Array to be be big enough for the indicated number of tiles.

This cache is not shared with PagedArrays in other rows and is always clipped to be less than the maximum value set using the setMaximumCacheSize member function. tiles. Tiles are cached using a first in first out algorithm.

Definition at line 173 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

void casacore::TempLatticeImpl< T >::setMaximumCacheSize ( uInt howManyPixels )

inline

Set the maximum (allowed) cache size as indicated.

Definition at line 157 of file TempLatticeImpl.h.

References casacore::TempLatticeImpl< T >::itsLatticePtr.

template<class T>

IPosition casacore::TempLatticeImpl< T >::shape ( ) const

inline

Return the shape of the Lattice including all degenerate axes.