Tiled Data Storage Manager using the shape as id. More...

#include <TiledShapeStMan.h>

Inheritance diagram for casacore::TiledShapeStMan:

Public Member Functions
	TiledShapeStMan (const String &hypercolumnName, const IPosition &defaultTileShape, uInt64 maximumCacheSize=0)
	Create a TiledShapeStMan storage manager for the hypercolumn with the given name. More...

	TiledShapeStMan (const String &hypercolumnName, const Record &spec)

	~TiledShapeStMan ()

virtual DataManager *	clone () const
	Clone this object. More...

virtual String	dataManagerType () const
	Get the type name of the data manager (i.e. More...

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

virtual Bool	canAccessColumn () const
	TiledShapeStMan can access a column if there are 2 hypercubes and the first one is empty. More...

virtual TSMCube *	singleHypercube ()
	Test if only one hypercube is used by this storage manager. More...

virtual void	setShape (rownr_t rownr, TSMCube *hypercube, const IPosition &shape, const IPosition &tileShape)
	Set the shape and tile shape of the given hypercube. More...

Public Member Functions inherited from casacore::TiledStMan
	TiledStMan ()
	Create a TiledStMan. More...

	TiledStMan (const String &hypercolumnName, uInt maximumCacheSizeMiB)
	Create a TiledStMan storage manager. More...

virtual	~TiledStMan ()

virtual String	dataManagerName () const
	Get the name given to the storage manager. More...

void	setDataManagerName (const String &newHypercolumnName)

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

virtual void	setProperties (const Record &spec)
	Modify data manager properties. More...

void	setDataChanged ()
	Set the flag to "data has changed since last flush". More...

virtual void	setMaximumCacheSize (uInt nMiB)
	Set the maximum cache size (in MiB) in a non-persistent way. More...

uInt	maximumCacheSize () const
	Get the current maximum cache size (in MiB (MibiByte)). More...

uInt	cacheSize (rownr_t rownr) const
	Get the current cache size (in buckets) for the hypercube in the given row. More...

const IPosition &	hypercubeShape (rownr_t rownr) const
	Get the hypercube shape of the data in the given row. More...

const IPosition &	tileShape (rownr_t rownr) const
	Get the tile shape of the data in the given row. More...

uInt64	bucketSize (rownr_t rownr) const
	Get the bucket size (in bytes) of the hypercube in the given row. More...

virtual Bool	canChangeShape () const
	Can the tiled storage manager handle changing array shapes? The default is no (but TiledCellStMan can). More...

virtual Bool	hasMultiFileSupport () const
	The data manager supports use of MultiFile. More...

uInt	calcCacheSize (rownr_t rownr, const IPosition &sliceShape, const IPosition &windowStart, const IPosition &windowLength, const IPosition &axisPath) const
	Calculate the cache size (in buckets) for accessing the hypercube containing the given row. More...

void	setCacheSize (rownr_t rownr, const IPosition &sliceShape, const IPosition &windowStart, const IPosition &windowLength, const IPosition &axisPath, Bool forceSmaller)
	Set the cache size using the `calcCacheSize` function mentioned above. More...

void	setCacheSize (rownr_t rownr, uInt nbuckets, Bool forceSmaller)
	Set the cache size for accessing the hypercube containing the given row. More...

void	setHypercubeCacheSize (uInt hypercube, uInt nbuckets, Bool forceSmaller)
	Sets the cache size using the hypercube instead of the row number. More...

Bool	userSetCache (rownr_t rownr) const
	Determine if the user set the cache size (using setCacheSize). More...

void	emptyCaches ()
	Empty the caches used by the hypercubes in this storage manager. More...

void	showCacheStatistics (ostream &os) const
	Show the statistics of all caches used. More...

uInt64	getLengthOffset (uInt64 nrPixels, Block< uInt > &dataOffset, Block< uInt > &localOffset, uInt &localTileLength) const
	Get the length of the data for the given number of pixels. More...

uInt	nrCoordVector () const
	Get the number of coordinate vectors. More...

rownr_t	nrow () const
	Get the nr of rows in this storage manager. More...

Bool	canAddRow () const
	Does the storage manager allow to add rows? (yes) More...

uInt	nhypercubes () const
	Return the number of hypercubes. More...

const TSMCube *	getTSMCube (uInt hypercube) const
	Get the given hypercube. More...

TSMCube *	getTSMCube (uInt hypercube)

const TSMCube *	getHypercube (rownr_t rownr) const
	Get the hypercube in which the given row is stored. More...

TSMCube *	makeTSMCube (TSMFile *file, const IPosition &cubeShape, const IPosition &tileShape, const Record &values, Int64 fileOffset=-1)
	Make the correct TSMCube type (depending on tsmOption()). More...

void	readTile (char local, const Block< uInt > &localOffset, const char external, const Block< uInt > &externalOffset, uInt nrpixels)
	Read a tile and convert the data to local format. More...

void	writeTile (char external, const Block< uInt > &externalOffset, const char local, const Block< uInt > &localOffset, uInt nrpixels)
	Write a tile after converting the data to external format. More...

TSMFile *	getFile (uInt sequenceNumber)
	Get the TSMFile object with the given sequence number. More...

virtual rownr_t	open64 (rownr_t nrrow, AipsIO &)
	Open the storage manager for an existing table. More...

virtual rownr_t	resync64 (rownr_t nrrow)
	Resync the storage manager with the new file contents. More...

virtual void	reopenRW ()
	Reopen all files used in this storage manager for read/write access. More...

virtual void	deleteManager ()
	The data manager will be deleted (because all its columns are requested to be deleted). More...

DataManagerColumn *	makeScalarColumn (const String &name, int dataType, const String &dataTypeID)
	Create a column in the storage manager on behalf of a table column. More...

DataManagerColumn *	makeDirArrColumn (const String &name, int dataType, const String &dataTypeID)
	Create a direct array column. More...

DataManagerColumn *	makeIndArrColumn (const String &name, int dataType, const String &dataTypeID)
	Create an indirect array column. More...

Bool	canReallocateColumns () const
	The TiledStMan wants to do reallocateColumn. More...

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

void	checkCubeShape (const TSMCube *hypercube, const IPosition &cubeShape) const
	Check the shape to be set for a hypercube. More...

int	coordinateDataType (const String &columnName) const
	Get the data type of the coordinate column with the given name. More...

void	initCoordinates (TSMCube *hypercube)
	Initialize the new coordinates for the given cube. More...

const TSMDataColumn *	getDataColumn (uInt colnr) const
	Get pointer to data column object. More...

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 Bool	isStorageManager () const
	Is the data manager a storage manager? The default is yes. 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	canRemoveRow () const
	Does the data manager allow to delete rows? (default no) More...

virtual Bool	canAddColumn () const
	Does the data manager allow to add columns? (default no) More...

virtual Bool	canRemoveColumn () const
	Does the data manager allow to delete columns? (default no) More...

virtual Bool	canRenameColumn () const
	Does the data manager allow to rename columns? (default yes) 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 DataManager *	makeObject (const String &dataManagerType, const Record &spec)
	Make the object from the type name string. More...

Static Public Member Functions inherited from casacore::TiledStMan
static IPosition	makeTileShape (const IPosition &hypercubeShape, Double tolerance=0.5, uInt64 maxNrPixelsPerTile=4 1024 1024)
	Derive the tile shape from the hypercube shape for the given number of pixels per tile. More...

static IPosition	makeTileShape (const IPosition &hypercubeShape, const Vector< double > &weight, const Vector< double > &tolerance, uInt64 maxNrPixelsPerTile=4 1024 1024)

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...

Private Member Functions
	TiledShapeStMan ()
	Create a TiledShapeStMan. More...

	TiledShapeStMan (const TiledShapeStMan &)
	Forbid copy constructor. More...

TiledShapeStMan &	operator= (const TiledShapeStMan &)
	Forbid assignment. More...

virtual IPosition	defaultTileShape () const
	Get the default tile shape. More...

void	addRow64 (rownr_t nrrow)
	Add rows to the storage manager. More...

Int	findHypercube (const IPosition &shape)
	Find the hypercube for the given shape. More...

void	addHypercube (rownr_t rownr, const IPosition &cubeShape, const IPosition &tileShape)
	Add a hypercube. More...

void	extendHypercube (rownr_t rownr, uInt cubeNr)
	Extend the hypercube with the given number of elements in the last dimension. More...

virtual TSMCube *	getHypercube (rownr_t rownr)
	Get the hypercube in which the given row is stored. More...

virtual TSMCube *	getHypercube (rownr_t rownr, IPosition &position)
	Get the hypercube in which the given row is stored. More...

virtual void	setupCheck (const TableDesc &tableDesc, const Vector< String > &dataNames) const
	Check if the hypercolumn definition fits this storage manager. More...

virtual Bool	flush (AipsIO &, Bool fsync)
	Flush and optionally fsync the data. More...

virtual void	create64 (rownr_t nrrow)
	Let the storage manager create files as needed for a new table. More...

virtual void	readHeader (rownr_t nrrow, Bool firstTime)
	Read the header info. More...

void	updateRowMap (uInt cubeNr, uInt pos, rownr_t rownr)
	Update the map of row numbers to cube number plus offset. More...

void	extendRowMap (rownr_t nrow)
	Extend the map of row numbers to cube number plus offset will new empty entries. More...

Private Attributes
IPosition	defaultTileShape_p
	The default tile shape. More...

Block< uInt >	rowMap_p
	The map of row number to cube and position in cube. More...

Block< uInt >	cubeMap_p

Block< uInt >	posMap_p

uInt	nrUsedRowMap_p
	The nr of elements used in the map blocks. More...

Int	lastHC_p
	The last hypercube found. More...

Additional Inherited Members
Static Public Attributes inherited from casacore::DataManager
static rownr_t	MAXROWNR32
	Define the highest row number that can be represented as signed 32-bit. More...

Protected Member Functions inherited from casacore::TiledStMan
void	setPersMaxCacheSize (uInt nMiB)
	Set the persistent maximum cache size (in MiB). More...

uInt	getBindings (const Vector< String > &columnNames, PtrBlock< TSMColumn * > &colSet, Bool mustExist) const
	Get the bindings of the columns with the given names. More...

virtual const TableDesc &	getDesc () const
	Get the table description needed for the hypercolumn description. More...

void	checkValues (const PtrBlock< TSMColumn * > &colSet, const Record &values) const
	Check if values are given in the record for all columns in the block. More...

void	checkCoordinates (const PtrBlock< TSMColumn * > &coordColSet, const IPosition &cubeShape, const Record &values) const
	Check if the coordinate values are correct. More...

void	checkShapeColumn (const IPosition &shape) const
	Check if the shapes of FixedShape data and coordinate columns match. More...

void	checkCoordinatesShapes (const TSMCube *hypercube, const IPosition &cubeShape) const
	Check if the cube shape matches that of defined coordinates. More...

void	checkAddHypercube (const IPosition &cubeShape, const Record &values) const
	Check if the hypercube to be added is correctly defined. More...

TSMCube *	makeHypercube (const IPosition &cubeShape, const IPosition &tileShape, const Record &values)
	Make a new TSMCube object. More...

Int	getCubeIndex (const Record &idValues) const
	Get the index of the hypercube with the given id-values. More...

rownr_t	addedNrrow (const IPosition &shape, uInt incrInLastDim) const
	Determine how many rows need to be added for an extension (in the last dimension) of a hypercube with the given shape. More...

Bool	flushCaches (Bool fsync)
	Flush the caches of all hypercubes. More...

AipsIO *	headerFileCreate ()
	Create the TSM header file. More...

AipsIO *	headerFileOpen ()
	Open the TSM header file. More...

void	headerFilePut (AipsIO &headerFile, uInt64 nrCube)
	Write the data into the header file. More...

uInt	headerFileGet (AipsIO &headerFile, rownr_t tabNrrow, Bool firstTime, Int extraNdim)
	Read the data from the header file. More...

void	headerFileClose (AipsIO *headerFile)
	Close the header file. More...

void	setup (Int extraNdim=-1)
	Set up the TiledStMan variables from the table description. More...

void	createFile (uInt index)
	Create a TSMFile object and store its pointer at the given index in the block. More...

int	arrayDataType (int dataType) const
	Convert the scalar data type to an array data type. 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...

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...

Protected Attributes inherited from casacore::TiledStMan
String	hypercolumnName_p
	The name of the hypercolumn. More...

rownr_t	nrrow_p
	The number of rows in the columns. More...

PtrBlock< TSMColumn * >	colSet_p
	The assembly of all columns. More...

PtrBlock< TSMDataColumn * >	dataCols_p
	The assembly of all data columns. More...

PtrBlock< TSMColumn * >	dataColSet_p

PtrBlock< TSMColumn * >	idColSet_p
	The assembly of all id columns. More...

PtrBlock< TSMColumn * >	coordColSet_p
	The assembly of all coordinate columns. More...

PtrBlock< TSMFile * >	fileSet_p
	The assembly of all TSMFile objects. More...

PtrBlock< TSMCube * >	cubeSet_p
	The assembly of all TSMCube objects. More...

uInt	persMaxCacheSize_p
	The persistent maximum cache size (in MiB) for a hypercube. More...

uInt	maxCacheSize_p
	The actual maximum cache size for a hypercube (in MiB). More...

uInt	nrdim_p
	The dimensionality of the hypercolumn. More...

uInt	nrCoordVector_p
	The number of vector coordinates. More...

IPosition	fixedCellShape_p
	The fixed cell shape. More...

Bool	dataChanged_p
	Has any data changed since the last flush? More...

Detailed Description

Tiled Data Storage Manager using the shape as id.

Intended use:

Public interface

Review Status

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

Prerequisite

TiledStMan
TSMCube
ROTiledStManAccessor for a discussion of the maximum cache size

Etymology

TiledShapeStMan is the Tiled Storage Manager where the shape is used as id to support variable shaped arrays.

Synopsis

TiledShapeStMan is a derivation from TiledStMan, the abstract tiled storage manager class. A description of the basics of tiled storage managers is given in the Tables module description.

TiledShapeStMan creates a hypercube for each different shape of the data arrays. For example, if a table contains line and continuum data of an observation, it results in 2 hypercubes. TiledShapeStMan does it all automatically, so it is much easier to use than class TiledDataStMan.
TiledShapeStMan is meant for columns with not too many different shapes, otherwise looking for a matching hypercube may take too long. When many different shapes are used, class TiledCellStMan should be used instead.

TiledShapeStMan has the following (extra) properties:

It can only handle columns containing arrays, thus not scalars.
Addition of a row sets the appropriate data arrays in that row temporarily to an empty hypercube. However, if the data arrays have a fixed shape, the shape is known and the hypercube can be generated immediately. Note that for a fixed shape column, one can as well use class TiledColumnStMan.
When the shape of the data array in a row is set for the first time, it is known which hypercube should be used or if a new hypercube has to be created.
Note that is is not possible to change the shape of an array. If that is needed, TiledCellStMan should be used instead.
Note that a hypercolumn has a given dimensionality, so each data cell in the hypercolumn has to match that dimensionality.
Although there are multiple hypercubes, an id value is not needed. The shape serves as the id value.
Coordinates for the hypercubes can be defined and (of course) their shapes have to match the hypercube shape. Their values have to be put explicitly (so it is not possible to define them via an addHypercube call like in TiledDataStMan). It is possible to put the coordinate values before or after the shape of the data array in that row is defined.
It is possible to define a (default) tile shape in the TiledShapeStMan constructor. When setting the shape of the array in a row (using ArrayColumn::setShape), it is possible to override that default for the hypercube in this particular row. However, since the tile shape is only used when creating a hypercube, using an overriding tile shape makes only sense when a given array shape is used for the first time. Note that the dimensionality of the hypercube is one higher than the dimensionality of the data arrays (since the hypercube contains multiple rows). It means that the number of values in tile shape can be one more than the number of axes in the data array. The last tile shape value defaults to 1; the other tile shape values have to be defined.

Motivation

TiledDataStMan proved to be very powerful, but also a bit cumbersome to use because a few special functions need to be called. TiledShapeStMan alleviates that problem.

Example

// Define the table description and the columns in it.
TableDesc td ("", "1", TableDesc::Scratch);
td.addColumn (ArrayColumnDesc<float>  ("RA", 1));
td.addColumn (ArrayColumnDesc<float>  ("Dec", 1));
td.addColumn (ScalarColumnDesc<float> ("Velocity"));
td.addColumn (ArrayColumnDesc<float>  ("Image", 2));
// Define the 3-dim hypercolumn with its data and coordinate columns.
// Note that its dimensionality must be one higher than the dimensionality
// of the data cells.
td.defineHypercolumn ("TSMExample",
3,
stringToVector ("Image"),
stringToVector ("RA,Dec,Velocity"));
// Now create a new table from the description.
SetupNewTable newtab("tTiledShapeStMan_tmp.data", td, Table::New);
// Create a TiledShapeStMan storage manager for the hypercolumn
// and bind the columns to it.
// The (default) tile shape has to be specified for the storage manager.
TiledShapeStMan sm1 ("TSMExample", IPosition(3,16,32,32));
newtab.bindAll (sm1);
// Create the table.
Table table(newtab);
// Define the values for the coordinates of the hypercube.
Vector<float> raValues(512);
Vector<float> DecValues(512);
indgen (raValues);
indgen (decValues, float(100));
ArrayColumn<float> ra (table, "RA");
ArrayColumn<float> dec (table, "Dec");
ScalarColumn<float> velocity (table, "Velocity");
ArrayColumn<float> image (table, "Image");
Cube<float> imageValues(IPosition(2,512,512));
indgen (imageValues);
// Write some data into the data columns.
for (uInt i=0; i<64; i++) {
table.addRow();
image.put (i, imageValues);
ra.put (i, raValues);
dec.put (i, decValues);
velocity.put (i, float(i));
}

Note that in this example the same shape is used for each row, but it could have been different.

Definition at line 183 of file TiledShapeStMan.h.

Constructor & Destructor Documentation

casacore::TiledShapeStMan::TiledShapeStMan	(	const String &	hypercolumnName,
		const IPosition &	defaultTileShape,
		uInt64	maximumCacheSize = `0`
	)

Create a TiledShapeStMan storage manager for the hypercolumn with the given name.

The hypercolumn name is also the name of the storage manager. The given maximum cache size (default is unlimited) is persistent, thus will be reused when the table is read back. Note that the class ROTiledStManAccessor allows one to overwrite the maximum cache size temporarily.
The constructor taking a Record expects fields in the record with the name of the arguments in uppercase. If not defined, their default value is used.

casacore::TiledShapeStMan::TiledShapeStMan	(	const String &	hypercolumnName,
		const Record &	spec
	)

casacore::TiledShapeStMan::~TiledShapeStMan ( )

casacore::TiledShapeStMan::TiledShapeStMan ( )

private

Create a TiledShapeStMan.

This constructor is private, because it should only be used by makeObject.

casacore::TiledShapeStMan::TiledShapeStMan ( const TiledShapeStMan & )

private

Forbid copy constructor.

Member Function Documentation

void casacore::TiledShapeStMan::addHypercube	(	rownr_t	rownr,
		const IPosition &	cubeShape,
		const IPosition &	tileShape
	)

private

Add a hypercube.

The number of rows in the table must be large enough to accommodate this hypercube. The possible id values must be given in the record, while coordinate values are optional. The field names in the record should match the coordinate and id column names. The last dimension in the cube shape can be zero, indicating that the hypercube is extensible.

void casacore::TiledShapeStMan::addRow64 ( rownr_t nrrow )

privatevirtual

Add rows to the storage manager.

Reimplemented from casacore::DataManager.

virtual Bool casacore::TiledShapeStMan::canAccessColumn ( ) const

virtual

TiledShapeStMan can access a column if there are 2 hypercubes and the first one is empty.

Reimplemented from casacore::TiledStMan.

virtual DataManager* casacore::TiledShapeStMan::clone ( ) const

virtual

Clone this object.

It does not clone TSMColumn objects possibly used.

Implements casacore::DataManager.

virtual void casacore::TiledShapeStMan::create64 ( rownr_t nrrow )

privatevirtual

Let the storage manager create files as needed for a new table.

This allows a column with an indirect array to create its file.

Reimplemented from casacore::DataManager.

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

virtual

Return a record containing data manager specifications and info.

Reimplemented from casacore::TiledStMan.

virtual String casacore::TiledShapeStMan::dataManagerType ( ) const

virtual

Get the type name of the data manager (i.e.

TiledShapeStMan).

Implements casacore::DataManager.

virtual IPosition casacore::TiledShapeStMan::defaultTileShape ( ) const

privatevirtual

Get the default tile shape.

Reimplemented from casacore::TiledStMan.

void casacore::TiledShapeStMan::extendHypercube	(	rownr_t	rownr,
		uInt	cubeNr
	)

private

Extend the hypercube with the given number of elements in the last dimension.

The record should contain the id values (to get the correct hypercube) and optionally coordinate values for the elements added.

void casacore::TiledShapeStMan::extendRowMap ( rownr_t nrow )

private

Extend the map of row numbers to cube number plus offset will new empty entries.

Int casacore::TiledShapeStMan::findHypercube ( const IPosition & shape )

private

Find the hypercube for the given shape.

It returns -1 when not found.

virtual Bool casacore::TiledShapeStMan::flush	(	AipsIO &	,
		Bool	fsync
	)

privatevirtual

Flush and optionally fsync the data.

It returns a True status if it had to flush (i.e. if data have changed).

Implements casacore::DataManager.

virtual TSMCube* casacore::TiledShapeStMan::getHypercube ( rownr_t rownr )

privatevirtual

Get the hypercube in which the given row is stored.

Implements casacore::TiledStMan.

virtual TSMCube* casacore::TiledShapeStMan::getHypercube	(	rownr_t	rownr,
		IPosition &	position
	)

privatevirtual

Get the hypercube in which the given row is stored.

It also returns the position of the row in that hypercube.

Implements casacore::TiledStMan.

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

static

Make the object from the type name string.

This function gets registered in the DataManager "constructor" map.

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

private

Forbid assignment.

virtual void casacore::TiledShapeStMan::readHeader	(	rownr_t	nrrow,
		Bool	firstTime
	)

privatevirtual

Read the header info.

Implements casacore::TiledStMan.

virtual void casacore::TiledShapeStMan::setShape	(	rownr_t	rownr,
		TSMCube *	hypercube,
		const IPosition &	shape,
		const IPosition &	tileShape
	)

virtual

Set the shape and tile shape of the given hypercube.

It is used when the first row in a new hypercube is written. If needed it adds a dimension to the shape, which reflects the row dimension. The tile shape in that dimension is by default 1.

Reimplemented from casacore::TiledStMan.

virtual void casacore::TiledShapeStMan::setupCheck	(	const TableDesc &	tableDesc,
		const Vector< String > &	dataNames
	)		const

privatevirtual

Check if the hypercolumn definition fits this storage manager.

Reimplemented from casacore::TiledStMan.

virtual TSMCube* casacore::TiledShapeStMan::singleHypercube ( )

virtual

Test if only one hypercube is used by this storage manager.

If not, throw an exception. Otherwise return the hypercube.

Reimplemented from casacore::TiledStMan.

void casacore::TiledShapeStMan::updateRowMap	(	uInt	cubeNr,
		uInt	pos,
		rownr_t	rownr
	)

private

Update the map of row numbers to cube number plus offset.

Member Data Documentation

Block<uInt> casacore::TiledShapeStMan::cubeMap_p

private

Definition at line 312 of file TiledShapeStMan.h.

IPosition casacore::TiledShapeStMan::defaultTileShape_p

private

The default tile shape.

Definition at line 309 of file TiledShapeStMan.h.

Int casacore::TiledShapeStMan::lastHC_p

private

The last hypercube found.

Definition at line 317 of file TiledShapeStMan.h.

uInt casacore::TiledShapeStMan::nrUsedRowMap_p

private

The nr of elements used in the map blocks.

Definition at line 315 of file TiledShapeStMan.h.

Block<uInt> casacore::TiledShapeStMan::posMap_p

private

Definition at line 313 of file TiledShapeStMan.h.

Block<uInt> casacore::TiledShapeStMan::rowMap_p

private

The map of row number to cube and position in cube.

Definition at line 311 of file TiledShapeStMan.h.

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

tables/DataMan/TiledShapeStMan.h

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