Class for a table held in memory. More...

#include <MemoryTable.h>

Inheritance diagram for casacore::MemoryTable:

Public Member Functions
	MemoryTable (SetupNewTable &, uInt nrrow, Bool initialize)
	Create the table in memory using the definitions in the SetupNewTable object. More...

virtual	~MemoryTable ()
	The destructor deletes all data. More...

virtual void	reopenRW ()
	Try to reopen the table (the underlying one) for read/write access. More...

virtual Bool	asBigEndian () const
	Is the table stored in big or little endian format? It returns the endian format of the machine. More...

virtual const StorageOption &	storageOption () const
	Get the storage option used for the table. More...

virtual Bool	isMultiUsed (Bool checkSubTable) const
	Is the table in use (i.e. More...

virtual const TableLock &	lockOptions () const
	Get the locking info. More...

virtual void	mergeLock (const TableLock &lockOptions)
	Merge the given lock info with the existing one. More...

virtual Bool	hasLock (FileLocker::LockType) const
	Has this process the read or write lock, thus can the table be read or written safely? It always returns True. More...

virtual Bool	lock (FileLocker::LockType, uInt nattempts)
	Locking the table is a no-op. More...

virtual void	unlock ()
	Unlocking the table is a no-op. More...

virtual void	flush (Bool fsync, Bool recursive)
	Flushing the table is a no-op. More...

virtual void	resync ()
	Resyncing the Table is a no-op. More...

virtual uInt	getModifyCounter () const
	Get the modify counter. More...

virtual Bool	isWritable () const
	Test if the table is opened as writable. More...

virtual void	copy (const String &newName, int tableOption) const
	Copy the table and all its subtables. More...

virtual void	deepCopy (const String &newName, const Record &dataManagerInfo, const StorageOption &, int tableOption, Bool, int endianFormat, Bool noRows) const

virtual void	rename (const String &newName, int tableOption)
	Rename the table. More...

virtual int	tableType () const
	Get the table type (Table::Memory). More...

virtual TableDesc	actualTableDesc () const
	Get the actual table description. More...

virtual Record	dataManagerInfo () const
	Get the data manager info. More...

virtual TableRecord &	keywordSet ()
	Get readonly access to the table keyword set. More...

virtual TableRecord &	rwKeywordSet ()
	Get read/write access to the table keyword set. More...

virtual void	flushTableInfo ()
	Write the TableInfo object. More...

virtual BaseColumn *	getColumn (uInt columnIndex) const
	Get a column object using its index. More...

virtual BaseColumn *	getColumn (const String &columnName) const
	Get a column object using its name. More...

virtual Bool	canAddRow () const
	Test if it is possible to add a row to this table (yes). More...

virtual void	addRow (uInt nrrow=1, Bool initialize=True)
	Add one or more rows and possibly initialize them. More...

virtual Bool	canRemoveRow () const
	Test if it is possible to remove a row from this table (yes). More...

virtual void	removeRow (uInt rownr)
	Remove the given row. More...

virtual void	addColumn (const ColumnDesc &columnDesc, Bool addToParent)
	Add a column to the table. More...

virtual void	addColumn (const ColumnDesc &columnDesc, const String &dataManager, Bool byName, Bool addToParent)

virtual void	addColumn (const ColumnDesc &columnDesc, const DataManager &dataManager, Bool addToParent)

virtual void	addColumn (const TableDesc &tableDesc, const DataManager &dataManager, Bool addToParent)

virtual Bool	canRemoveColumn (const Vector< String > &columnNames) const
	Test if columns can be removed (yes). More...

virtual void	removeColumn (const Vector< String > &columnNames)
	Remove columns. More...

virtual Bool	canRenameColumn (const String &columnName) const
	Test if a column can be renamed (yes). More...

virtual void	renameColumn (const String &newName, const String &oldName)
	Rename a column. More...

virtual void	renameHypercolumn (const String &newName, const String &oldName)
	Rename a hypercolumn. More...

virtual DataManager *	findDataManager (const String &name, Bool byColumn) const
	Find the data manager with the given name or for the given column. More...

Public Member Functions inherited from casacore::BaseTable
	BaseTable (const String &tableName, int tableOption, uInt nrrow)
	Initialize the object. More...

void	BaseTableCommon (const String &tableName, int tableOption, uInt nrrow)
	Common code shared by the MPI constructor and non-MPI constructor. More...

virtual	~BaseTable ()

void	link ()
	Link to this BaseTable object (i.e. More...

virtual Bool	isNull () const
	Is the table a null table? By default it is not. More...

virtual void	setTableChanged ()
	Set the table to being changed. More...

void	doNotWrite ()
	Do not write the table (used in in case of exceptions). More...

Bool	isColumnWritable (const String &columnName) const
	Test if the given column is writable. More...

Bool	isColumnWritable (uInt columnIndex) const

Bool	isColumnStored (const String &columnName) const
	Test if the given column is stored (otherwise it is virtual). More...

Bool	isColumnStored (uInt columnIndex) const

const String &	tableName () const
	Get the table name. More...

virtual void	getPartNames (Block< String > &names, Bool recursive) const
	Get the names of the tables this table consists of. More...

int	tableOption () const
	Get the table option. More...

void	markForDelete (Bool callback, const String &oldName)
	Mark the table for delete. More...

void	unmarkForDelete (Bool callback, const String &oldName)
	Unmark the table for delete. More...

Bool	isMarkedForDelete () const
	Test if the table is marked for delete. More...

const TableDesc &	tableDesc () const
	Get the table description. More...

void	showStructure (std::ostream &, Bool showDataMan, Bool showColumns, Bool showSubTables, Bool sortColumns, Bool cOrder)
	Show the table structure (implementation of Table::showStructure). More...

TableInfo &	tableInfo ()
	Get access to the TableInfo object. More...

uInt	nrow () const
	Get number of rows. More...

void	removeRow (const Vector< uInt > &rownrs)

BaseTable *	select (const TableExprNode &, uInt maxRow, uInt offset)
	Select rows using the given expression (which can be null). More...

BaseTable *	select (uInt maxRow, uInt offset)
	Select maxRow rows and skip first offset rows. More...

BaseTable *	select (const Vector< uInt > &rownrs)
	Select rows using a vector of row numbers. More...

BaseTable *	select (const Block< Bool > &mask)
	Select rows using a mask block. More...

BaseTable *	project (const Block< String > &columnNames)
	Project the given columns (i.e. More...

BaseTable *	tabAnd (BaseTable *)
	Do logical operations on a table. More...

BaseTable *	tabOr (BaseTable *)
	union with another table More...

BaseTable *	tabSub (BaseTable *)
	subtract another table More...

BaseTable *	tabXor (BaseTable *)
	xor with another table More...

BaseTable *	tabNot ()
	take complement More...

BaseTable *	sort (const Block< String > &columnNames, const Block< CountedPtr< BaseCompare > > &compareObjects, const Block< Int > &sortOrder, int sortOption)
	Sort a table on one or more columns of scalars. More...

BaseTableIterator *	makeIterator (const Block< String > &columnNames, const Block< CountedPtr< BaseCompare > > &, const Block< Int > &orders, int option)
	Create an iterator. More...

void	addColumns (const TableDesc &tableDesc, const Record &dmInfo, Bool addToParent)
	Add one or more columns to the table. More...

Bool	checkRemoveColumn (const Vector< String > &columnNames, Bool throwException) const
	Check if the set of columns can be removed. More...

virtual Vector< uInt >	rowNumbers () const
	Get a vector of row numbers. More...

virtual BaseTable *	root ()
	Get pointer to root table (i.e. More...

virtual Bool	rowOrder () const
	Tell if the table is in row order. More...

virtual Vector< uInt > *	rowStorage ()
	By the default the table cannot return the storage of rownrs. More...

virtual Bool	adjustRownrs (uInt nrrow, Vector< uInt > &rownrs, Bool determineOrder) const
	Adjust the row numbers to be the actual row numbers in the root table. More...

virtual BaseTable *	doSort (PtrBlock< BaseColumn * > &, const Block< CountedPtr< BaseCompare > > &, const Block< Int > &sortOrder, int sortOption)
	Do the actual sort. More...

RefTable *	makeRefTable (Bool rowOrder, uInt initialNrrow)
	Create a RefTable object. More...

void	checkRowNumber (uInt rownr) const
	Check if the row number is valid. More...

int	traceId () const
	Get the table's trace-id. More...

Private Member Functions
	MemoryTable (const MemoryTable &)
	Copy constructor is forbidden, because copying a table requires some more knowledge (like table name of result). More...

MemoryTable &	operator= (const MemoryTable &)
	Assignment is forbidden, because copying a table requires some more knowledge (like table name of result). More...

void	setup (BaseTable *btp)
	Setup the main parts of the object. More...

Private Attributes
ColumnSet *	colSetPtr_p

TableLockData *	lockPtr_p

Additional Inherited Members
Static Public Member Functions inherited from casacore::BaseTable
static void	unlink (BaseTable *)
	Unlink from a BaseTable. More...

static TableInfo	tableInfo (const String &tableName)
	Get the table info of the table with the given name. More...

Protected Member Functions inherited from casacore::BaseTable
void	scratchCallback (Bool isScratch, const String &oldName) const
	Do the callback for scratch tables (if callback is set). More...

Bool	makeTableDir ()
	Create the table directory when needed (and possible). More...

void	trueDeepCopy (const String &newName, const Record &dataManagerInfo, const StorageOption &, int tableOption, int endianFormat, Bool noRows) const
	Make a true deep copy of the table. More...

void	prepareCopyRename (const String &newName, int tableOption) const
	Prepare for copying or renaming a table. More...

virtual void	renameSubTables (const String &newName, const String &oldName)
	Rename the subtables (used by rename function). More...

void	throwIfTableExists ()
	Check if the table already exists. More...

Bool	openedForWrite () const
	Test if the table is opened for write. More...

void	writeStart (AipsIO &, Bool bigEndian)
	Start writing a table. More...

void	writeEnd (AipsIO &)
	End writing a table. More...

Bool	shouldNotWrite () const
	Should the table be written. More...

void	getTableInfo ()
	Read the TableInfo object. More...

Protected Attributes inherited from casacore::BaseTable
uInt	nrlink_p

uInt	nrrow_p

uInt	nrrowToAdd_p

TableDesc *	tdescPtr_p

String	name_p

int	option_p

Bool	noWrite_p

Bool	delete_p

TableInfo	info_p

Bool	madeDir_p

int	itsTraceId

Detailed Description

Class for a table held in memory.

Intended use:

Internal

Review Status

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

Prerequisite

BaseTable

Synopsis

MemoryTable holds all its data in memory. It means that the data is not persistent. However, it can be copied to another table to make the data persistent. Furthermore it is a table as all other tables, so all table functions can be applied to it. Some functions (e.g. lock) won't do anything. Also all table operations like sorting, selecting, and iterating can be used.

The constructor accepts a SetupNewTable object which can contain bindings of columns to any data manager. All bindings to storage managers will be replaced by a binding to the memory based storage manager MemoryStMan. Also all unbound columns will be bound to MemoryStMan. Thus it is still possible that a column is bound to a virtual column engine like CompressComplex.

Definition at line 82 of file MemoryTable.h.

Constructor & Destructor Documentation

casacore::MemoryTable::MemoryTable	(	SetupNewTable &	,
		uInt	nrrow,
		Bool	initialize
	)

Create the table in memory using the definitions in the SetupNewTable object.

virtual casacore::MemoryTable::~MemoryTable ( )

virtual

The destructor deletes all data.

casacore::MemoryTable::MemoryTable ( const MemoryTable & )

private

Copy constructor is forbidden, because copying a table requires some more knowledge (like table name of result).

Declaring it private, makes it unusable.

Member Function Documentation

virtual TableDesc casacore::MemoryTable::actualTableDesc ( ) const

virtual

Get the actual table description.

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members