Virtual column engine forwarding to other columns. More...

#include <ForwardCol.h>

Inheritance diagram for casacore::ForwardColumnEngine:

Public Member Functions
	ForwardColumnEngine (const String &dataManagerName, const Record &spec)
	The default constructor is required for reconstruction of the engine when a table is read back. More...

	ForwardColumnEngine (const Table &referencedTable, const String &dataManagerName)
	Create the engine. More...

	ForwardColumnEngine (const Table &referencedTable)
	Create the engine. More...

	~ForwardColumnEngine ()
	Destructor is mandatory. More...

DataManager *	clone () const
	Clone the engine object. More...

String	dataManagerName () const
	Return the name of the data manager. More...

String	dataManagerType () const
	Return the type of the engine (i.e. More...

virtual Record	dataManagerSpec () const
	Record a record containing data manager specifications. More...

const String &	suffix () const
	Get the suffix to be used for names. More...

void	setRefTable (const Table &refTable)
	Set RefTable_p if not set yet. More...

Public Member Functions inherited from casacore::VirtualColumnEngine
	VirtualColumnEngine ()
	Create the object. More...

virtual	~VirtualColumnEngine ()

Public Member Functions inherited from casacore::DataManager
	DataManager ()
	Default constructor. More...

virtual	~DataManager ()

void	dataManagerInfo (Record &info) const
	Add SEQNR and SPEC (the DataManagerSpec subrecord) to the info. More...

virtual Record	getProperties () const
	Get data manager properties that can be modified. More...

virtual void	setProperties (const Record &spec)
	Modify data manager properties given in record fields. More...

virtual Bool	canReallocateColumns () const
	Tell if the data manager wants to reallocate the data manager column objects. More...

virtual DataManagerColumn *	reallocateColumn (DataManagerColumn *column)
	Reallocate the column object if it is part of this data manager. More...

uInt	sequenceNr () const
	Get the (unique) sequence nr of this data manager. More...

uInt	ncolumn () const
	Get the nr of columns in this data manager (can be zero). More...

Bool	asBigEndian () const
	Have the data to be stored in big or little endian canonical format? More...

const TSMOption &	tsmOption () const
	Get the TSM option. More...

MultiFileBase *	multiFile ()
	Get the MultiFile pointer (can be 0). More...

String	keywordName (const String &keyword) const
	Compose a keyword name from the given keyword appended with the sequence number (e.g. More...

String	fileName () const
	Compose a unique filename from the table name and sequence number. More...

ByteIO::OpenOption	fileOption () const
	Get the AipsIO option of the underlying file. More...

virtual Bool	isRegular () const
	Is this a regular storage manager? It is regular if it allows addition of rows and writing data in them. More...

Table &	table () const
	Get the table this object is associated with. More...

virtual Bool	canRenameColumn () const
	Does the data manager allow to rename columns? (default yes) More...

virtual void	setMaximumCacheSize (uInt nbytes)
	Set the maximum cache size (in bytes) to be used by a storage manager. More...

virtual void	showCacheStatistics (std::ostream &) const
	Show the data manager's IO statistics. More...

DataManagerColumn *	createScalarColumn (const String &columnName, int dataType, const String &dataTypeId)
	Create a column in the data manager on behalf of a table column. More...

DataManagerColumn *	createDirArrColumn (const String &columnName, int dataType, const String &dataTypeId)
	Create a direct array column. More...

DataManagerColumn *	createIndArrColumn (const String &columnName, int dataType, const String &dataTypeId)
	Create an indirect array column. More...

DataManager *	getClone () const
	Has the object already been cloned? More...

void	setClone (DataManager *clone) const
	Set the pointer to the clone. More...

Static Public Member Functions
static String	className ()
	Return the name of the class. More...

static void	registerClass ()
	Register the class name and the static makeObject "constructor". More...

static DataManager *	makeObject (const String &dataManagerType, const Record &spec)
	Define the "constructor" to construct this engine when a table is read back. More...

Static Public Member Functions inherited from casacore::DataManager
static void	registerCtor (const String &type, DataManagerCtor func)
	Register a mapping of a data manager type to its static construction function. More...

static DataManagerCtor	getCtor (const String &dataManagerType)
	Get the "constructor" of a data manager (thread-safe). More...

static Bool	isRegistered (const String &dataManagerType)
	Test if a data manager is registered (thread-safe). More...

static DataManager *	unknownDataManager (const String &dataManagerType, const Record &spec)
	Serve as default function for theirRegisterMap, which catches all unknown data manager types. More...

Protected Member Functions
void	setSuffix (const String &suffix)
	Set the suffix. More...

void	addForwardColumn (ForwardColumn *colp)
	Add a ForwardColumn object to the block. More...

const Table &	refTable () const
	Get access to the refTable_p data member. More...

void	baseCreate ()
	Do the creation (i.e. More...

void	basePrepare ()
	Do the preparation of the engine by preparing all columns. More...

Protected Member Functions inherited from casacore::DataManager
void	decrementNcolumn ()
	Decrement number of columns (in case a column is deleted). More...

void	setEndian (Bool bigEndian)
	Tell the data manager if big or little endian format is needed. More...

void	setTsmOption (const TSMOption &tsmOption)
	Tell the data manager which TSM option to use. More...

void	setMultiFile (MultiFileBase *mfile)
	Tell the data manager that MultiFile can be used. More...

virtual Bool	hasMultiFileSupport () const
	Does the data manager support use of MultiFile? A derived class has to return True if it can use the MultiFile. More...

void	throwDataTypeOther (const String &columnName, int dataType) const
	Throw an exception in case data type is TpOther, because the storage managers (and maybe other data managers) do not support such columns. More...

Private Member Functions
	ForwardColumnEngine (const ForwardColumnEngine &)
	The copy constructor is forbidden (so it is private). More...

ForwardColumnEngine &	operator= (const ForwardColumnEngine &)
	Assignment is forbidden (so it is private). More...

Bool	canAddRow () const
	This data manager allows to add rows. More...

Bool	canRemoveRow () const
	This data manager allows to delete rows. More...

void	addRow (uInt nrrow)
	Add rows to all columns. More...

void	removeRow (uInt rownr)
	Delete a row from all columns. More...

Bool	canAddColumn () const
	This data manager allows to add columns. More...

Bool	canRemoveColumn () const
	This data manager allows to delete columns. More...

void	addColumn (DataManagerColumn *)
	Add a column. More...

void	removeColumn (DataManagerColumn *)
	Delete a column. More...

DataManagerColumn *	makeScalarColumn (const String &columnName, int dataType, const String &dataTypeId)
	Create the column object for the scalar column in this engine. More...

DataManagerColumn *	makeIndArrColumn (const String &columnName, int dataType, const String &dataTypeId)
	Create the column object for the indirect array column in this engine. More...

void	create (uInt initialNrrow)
	Initialize the object for a new table. More...

void	prepare ()
	Initialize the engine. More...

void	reopenRW ()
	Reopen the engine for read/write access. More...

Private Attributes
PtrBlock< ForwardColumn * >	refColumns_p
	Define the various engine column objects. More...

Table	refTable_p
	The referenced table. More...

String	dataManName_p
	The name of the data manager. More...

String	suffix_p
	The suffix to be used in names. More...

Detailed Description

Virtual column engine forwarding to other columns.

Review Status

Reviewed By:: UNKNOWN
Date Reviewed:: before2004/08/25

Intended use:

Public interface

Prerequisite

VirtualColumnEngine

Synopsis

ForwardColumnEngine is a data manager which forwards the gets and puts of columns to columns with the same names in another table. It is, in fact, a reference to the other table columns. The engine consists of a set of ForwardColumn objects, which handle the actual gets and puts.

Motivation

This class will be used by the calibration software. Most columns in a measurement table will be forwarded (thus bound to a ForwardColumnEngine object), while a few (i.e. the data themselves) will be calculated by a dedicated calibration engine.

Example

// The original table.
Table tab("someTable");
// Create another table with the same description.
SetupNewTable newtab("tForwardCol1.data", tab.tableDesc(), Table::New);
// Create an engine which forwards to the original table.
// Bind all columns in the new table to the forwarding engine.
ForwardColumnEngine fce(tab);
newtab.bindAll (fce);
// Create the new table.
// Every get and put on this table is forwarded to the original table.
// NB. Puts cannot be done here, because the original table was
//     opened as readonly.
// Of course, some columns could have been bound to another
// data manager (storage manager, calibration engine,...).
Table forwTab(newtab);

Definition at line 416 of file ForwardCol.h.

Constructor & Destructor Documentation

casacore::ForwardColumnEngine::ForwardColumnEngine	(	const String &	dataManagerName,
		const Record &	spec
	)

The default constructor is required for reconstruction of the engine when a table is read back.

casacore::ForwardColumnEngine::ForwardColumnEngine	(	const Table &	referencedTable,
		const String &	dataManagerName
	)

Create the engine.

The columns using this engine will reference the given table. The data manager gets the given name.

casacore::ForwardColumnEngine::ForwardColumnEngine ( const Table & referencedTable )

Create the engine.

The columns using this engine will reference the given table. The data manager has no name.

casacore::ForwardColumnEngine::~ForwardColumnEngine ( )

Destructor is mandatory.

casacore::ForwardColumnEngine::ForwardColumnEngine ( const ForwardColumnEngine & )

private

The copy constructor is forbidden (so it is private).

Member Function Documentation

void casacore::ForwardColumnEngine::addColumn ( DataManagerColumn * )

privatevirtual

Add a column.

Reimplemented from casacore::DataManager.

void casacore::ForwardColumnEngine::addForwardColumn ( ForwardColumn * colp )

protected

Add a ForwardColumn object to the block.

void casacore::ForwardColumnEngine::addRow ( uInt nrrow )

privatevirtual

Add rows to all columns.

This is not doing anything (but needed to override the default).

Reimplemented from casacore::VirtualColumnEngine.

void casacore::ForwardColumnEngine::baseCreate ( )

protected

Do the creation (i.e.

initialization) of the engine.

void casacore::ForwardColumnEngine::basePrepare ( )

protected

Do the preparation of the engine by preparing all columns.

Bool casacore::ForwardColumnEngine::canAddColumn ( ) const

privatevirtual

This data manager allows to add columns.

Reimplemented from casacore::DataManager.

Bool casacore::ForwardColumnEngine::canAddRow ( ) const

privatevirtual

This data manager allows to add rows.

Reimplemented from casacore::VirtualColumnEngine.

Bool casacore::ForwardColumnEngine::canRemoveColumn ( ) const

privatevirtual

This data manager allows to delete columns.

Reimplemented from casacore::DataManager.

Bool casacore::ForwardColumnEngine::canRemoveRow ( ) const

privatevirtual

This data manager allows to delete rows.

Reimplemented from casacore::VirtualColumnEngine.

static String casacore::ForwardColumnEngine::className ( )

static

Return the name of the class.

DataManager* casacore::ForwardColumnEngine::clone ( ) const

virtual

Clone the engine object.

Implements casacore::DataManager.

void casacore::ForwardColumnEngine::create ( uInt initialNrrow )

privatevirtual

Initialize the object for a new table.

It defines the column keywords containing the name of the original table, which can be the parent of the referenced table.

Reimplemented from casacore::VirtualColumnEngine.

String casacore::ForwardColumnEngine::dataManagerName ( ) const

virtual

Return the name of the data manager.

This is the name of this instantiation of the data manager, thus not its type name.

Reimplemented from casacore::DataManager.

virtual Record casacore::ForwardColumnEngine::dataManagerSpec ( ) const

virtual

Record a record containing data manager specifications.

Reimplemented from casacore::DataManager.

Reimplemented in casacore::ForwardColumnIndexedRowEngine.

String casacore::ForwardColumnEngine::dataManagerType ( ) const

virtual

Return the type of the engine (i.e.

its class name ForwardColumnEngine).

Implements casacore::DataManager.

DataManagerColumn* casacore::ForwardColumnEngine::makeIndArrColumn	(	const String &	columnName,
		int	dataType,
		const String &	dataTypeId
	)

privatevirtual

Create the column object for the indirect array column in this engine.

Reimplemented from casacore::VirtualColumnEngine.

static DataManager* casacore::ForwardColumnEngine::makeObject	(	const String &	dataManagerType,
		const Record &	spec
	)

static

Define the "constructor" to construct this engine when a table is read back.

This "constructor" has to be registered by the user of the engine. If the engine is commonly used, its registration can be added into the registerAllCtor function in DataManReg.cc. This function gets automatically invoked by the table system.

DataManagerColumn* casacore::ForwardColumnEngine::makeScalarColumn	(	const String &	columnName,
		int	dataType,
		const String &	dataTypeId
	)

privatevirtual

Create the column object for the scalar column in this engine.

Reimplemented from casacore::VirtualColumnEngine.

ForwardColumnEngine& casacore::ForwardColumnEngine::operator= ( const ForwardColumnEngine & )

private

Assignment is forbidden (so it is private).

void casacore::ForwardColumnEngine::prepare ( )

privatevirtual

Initialize the engine.

It gets the name of the original table(s) from the column keywords, opens those tables and attaches the ForwardColumn objects to the columns in those tables.

Reimplemented from casacore::VirtualColumnEngine.

const Table& casacore::ForwardColumnEngine::refTable ( ) const

inlineprotected

Get access to the refTable_p data member.

Definition at line 469 of file ForwardCol.h.

References refTable_p.

static void casacore::ForwardColumnEngine::registerClass ( )

static

Register the class name and the static makeObject "constructor".

This will make the engine known to the table system.

void casacore::ForwardColumnEngine::removeColumn ( DataManagerColumn * )

privatevirtual

Delete a column.

Reimplemented from casacore::DataManager.

void casacore::ForwardColumnEngine::removeRow ( uInt rownr )

privatevirtual

Delete a row from all columns.

This is not doing anything (but needed to override the default).

Reimplemented from casacore::VirtualColumnEngine.

void casacore::ForwardColumnEngine::reopenRW ( )

privatevirtual

Reopen the engine for read/write access.

It makes all its columns writable if their underlying table is writable.

Reimplemented from casacore::DataManager.

void casacore::ForwardColumnEngine::setRefTable ( const Table & refTable )

Set RefTable_p if not set yet.

This is done by ForwardColumn to cover the case for existing tables where the default constructor of ForwardColumnEngine is used and refTable_p is not filled in.

void casacore::ForwardColumnEngine::setSuffix ( const String & suffix )

inlineprotected

Set the suffix.

Definition at line 572 of file ForwardCol.h.

References suffix(), and suffix_p.

const String & casacore::ForwardColumnEngine::suffix ( ) const

inline

Get the suffix to be used for names.

Definition at line 569 of file ForwardCol.h.

References suffix_p.

Referenced by setSuffix().

Member Data Documentation

String casacore::ForwardColumnEngine::dataManName_p

private

The name of the data manager.

Definition at line 545 of file ForwardCol.h.

PtrBlock<ForwardColumn*> casacore::ForwardColumnEngine::refColumns_p

private

Define the various engine column objects.

Definition at line 538 of file ForwardCol.h.

Table casacore::ForwardColumnEngine::refTable_p

private

The referenced table.

For newly created tables this is filled in by the constructor. For existing tables this is filled in by the first ForwardColumn object being constructed.

Definition at line 543 of file ForwardCol.h.

Referenced by refTable().

String casacore::ForwardColumnEngine::suffix_p

private

The suffix to be used in names.

Definition at line 547 of file ForwardCol.h.

Referenced by setSuffix(), and suffix().

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

casa/casacore/tables/DataMan/ForwardCol.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Review Status

Intended use:

Prerequisite

Synopsis

Motivation

Example

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation