casacore::RegionHandlerTable Class Reference

Class for keeping regions in memory. More...

#include <RegionHandlerTable.h>

Inheritance diagram for casacore::RegionHandlerTable:

Public Types
typedef Table &	GetCallback (void *objectPtr, Bool writable)
Public Types inherited from casacore::RegionHandler
enum	GroupType {   Regions,   Masks,   Any }
	Define the possible group types (regions or masks). More...

Public Member Functions
	RegionHandlerTable (GetCallback *callback, void *objectPtr)
	RegionHandlerTable (const RegionHandlerTable &)
virtual	~RegionHandlerTable ()
RegionHandlerTable &	operator= (const RegionHandlerTable &)
virtual RegionHandlerTable *	clone () const
	Make a copy of the object. More...
virtual void	setObjectPtr (void *objectPtr)
	Set the object pointer (for RegionHandlerTable's callback). More...
virtual Bool	canDefineRegion () const
	Can the class indeed define and handle regions? The default implementation returns False. More...
virtual void	setDefaultMask (const String &maskName)
	Set the default mask to the mask with the given name. More...
virtual String	getDefaultMask () const
	Get the name of the default mask. More...
virtual Bool	defineRegion (const String &name, const ImageRegion &region, RegionHandler::GroupType, Bool overwrite=False)
	Define a region belonging to the table. More...
virtual Bool	hasRegion (const String &name, RegionHandler::GroupType=RegionHandler::Any) const
	Does the table have a region with the given name? More...
virtual ImageRegion *	getRegion (const String &name, RegionHandler::GroupType=Any, Bool throwIfUnknown=True) const
	Get a region belonging to the table. More...
virtual Bool	renameRegion (const String &newName, const String &oldName, RegionHandler::GroupType=Any, Bool overwrite=False)
	Rename a region. More...
virtual Bool	removeRegion (const String &name, RegionHandler::GroupType=Any, Bool throwIfUnknown=True)
	Remove a region belonging to the table. More...
virtual Vector< String >	regionNames (RegionHandler::GroupType=Any) const
	Get the names of all regions/masks. More...
virtual ImageRegion	makeMask (const LatticeBase &lattice, const String &name)
	Make a mask for a lattice (e.g. More...
Public Member Functions inherited from casacore::RegionHandler
virtual	~RegionHandler ()
String	makeUniqueRegionName (const String &rootName, uInt startNumber=1) const
	Make a unique region name from the given root name, thus make it such that the name is not already in use for a region or mask. More...

Private Member Functions
Table &	rwTable ()
const Table &	table () const
virtual Int	findRegionGroup (const String &regionName, RegionHandler::GroupType=Any, Bool throwIfUnknown=True) const

Private Attributes
GetCallback *	itsCallback
void *	itsObjectPtr

Detailed Description

Class for keeping regions in memory.

Intended use:

Internal

Review Status

Test programs:

tPagedImage2

Prerequisite

• PagedImage
• ImageRegion

Synopsis

Persistent regions are stored as subrecords of the table keywords "regions" and "masks". The user can choose one of both keywords. Keyword "masks" is meant for true image masks, i.e. telling for each pixel if it is good or bad. Keyword "regions" is meant for true regions in an image.

This class handles defining, getting and removing such regions. It is used by class

Definition at line 88 of file RegionHandlerTable.h.

Member Typedef Documentation

typedef Table& casacore::RegionHandlerTable::GetCallback(void *objectPtr, Bool writable)

Definition at line 93 of file RegionHandlerTable.h.

Constructor & Destructor Documentation

casacore::RegionHandlerTable::RegionHandlerTable	(	GetCallback *	callback,
		void *	objectPtr
	)

casacore::RegionHandlerTable::RegionHandlerTable

(

const RegionHandlerTable &

)

virtual casacore::RegionHandlerTable::~RegionHandlerTable ( )

virtual

Member Function Documentation

virtual Bool casacore::RegionHandlerTable::canDefineRegion ( ) const

virtual

Can the class indeed define and handle regions? The default implementation returns False.

Reimplemented from casacore::RegionHandler.

virtual RegionHandlerTable* casacore::RegionHandlerTable::clone ( ) const

virtual

Make a copy of the object.

Reimplemented from casacore::RegionHandler.

virtual Bool casacore::RegionHandlerTable::defineRegion ( const String &  name, const ImageRegion &  region, RegionHandler::GroupType  , Bool  overwrite = False  )

virtual

Define a region belonging to the table.

The group type determines if it stored as a region or mask. If overwrite=False, an exception will be thrown if the region already exists in the "regions" or "masks" keyword. Otherwise the region will be removed first.
A False status is returned if the table is not writable

Reimplemented from casacore::RegionHandler.

virtual Int casacore::RegionHandlerTable::findRegionGroup ( const String &  regionName, RegionHandler::GroupType  = Any, Bool  throwIfUnknown = True  ) const

privatevirtual

virtual String casacore::RegionHandlerTable::getDefaultMask ( ) const

virtual

Get the name of the default mask.

An empty string is returned if no default mask.

Reimplemented from casacore::RegionHandler.

virtual ImageRegion* casacore::RegionHandlerTable::getRegion ( const String &  name, RegionHandler::GroupType  = Any, Bool  throwIfUnknown = True  ) const

virtual

Get a region belonging to the table.

A zero pointer is returned if the region does not exist. The caller has to delete the ImageRegion object created.
No exception is thrown if the region does not exist.

Reimplemented from casacore::RegionHandler.

virtual Bool casacore::RegionHandlerTable::hasRegion ( const String &  name, RegionHandler::GroupType  = RegionHandler::Any  ) const

virtual

Does the table have a region with the given name?

Reimplemented from casacore::RegionHandler.

virtual ImageRegion casacore::RegionHandlerTable::makeMask ( const LatticeBase &  lattice, const String &  name  )

virtual

Make a mask for a lattice (e.g.

a PagedImage or TempImage). It creates it with the shape and tile shape of the lattice.

Reimplemented from casacore::RegionHandler.

RegionHandlerTable& casacore::RegionHandlerTable::operator=

(

const RegionHandlerTable &

)

virtual Vector<String> casacore::RegionHandlerTable::regionNames ( RegionHandler::GroupType  = Any ) const

virtual

Get the names of all regions/masks.

Reimplemented from casacore::RegionHandler.

virtual Bool casacore::RegionHandlerTable::removeRegion ( const String &  name, RegionHandler::GroupType  = Any, Bool  throwIfUnknown = True  )

virtual

Remove a region belonging to the table.

Optionally an exception is thrown if the region does not exist.
A False status is returned if the table is not writable

Reimplemented from casacore::RegionHandler.

virtual Bool casacore::RegionHandlerTable::renameRegion ( const String &  newName, const String &  oldName, RegionHandler::GroupType  = Any, Bool  overwrite = False  )

virtual

Rename a region.

If a region with the new name already exists, it is deleted or an exception is thrown (depending on overwrite). The region name is looked up in the given group(s).
An exception is thrown if the old region name does not exist.

Reimplemented from casacore::RegionHandler.

Table& casacore::RegionHandlerTable::rwTable ( )

inlineprivate

Definition at line 176 of file RegionHandlerTable.h.

References itsCallback, itsObjectPtr, and casacore::True.

virtual void casacore::RegionHandlerTable::setDefaultMask ( const String &  maskName )

virtual

Set the default mask to the mask with the given name.

It constructs a ImageRegion object for the new default mask. If the table is writable, the setting is persistent by writing the name as a keyword. If the given maskName is the empty string, the default mask is unset.

Reimplemented from casacore::RegionHandler.

virtual void casacore::RegionHandlerTable::setObjectPtr ( void *  objectPtr )

virtual

Set the object pointer (for RegionHandlerTable's callback).

Default implementation does nothing.

Reimplemented from casacore::RegionHandler.

const Table& casacore::RegionHandlerTable::table ( ) const

inlineprivate

Definition at line 178 of file RegionHandlerTable.h.

References casacore::False, itsCallback, and itsObjectPtr.

Member Data Documentation

GetCallback* casacore::RegionHandlerTable::itsCallback

private

Definition at line 192 of file RegionHandlerTable.h.

Referenced by rwTable(), and table().

void* casacore::RegionHandlerTable::itsObjectPtr

private

Definition at line 193 of file RegionHandlerTable.h.

Referenced by rwTable(), and table().

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

• casa/casacore/images/Regions/RegionHandlerTable.h