Class to hold the table expression nodes for an element in a set. More...

#include <ExprNodeSet.h>

Inheritance diagram for casacore::TableExprNodeSetElem:

Public Member Functions
	TableExprNodeSetElem (const TableExprNode &node)
	Create the object for a single expression node. More...

	TableExprNodeSetElem (const TableExprNode start, const TableExprNode end, const TableExprNode *incr, Bool isEndExcl=False)
	Create the object for a discrete interval. More...

	TableExprNodeSetElem (Bool isLeftClosed, const TableExprNode &start, const TableExprNode &end, Bool isRightClosed)
	Create the object for a continuous bounded interval. More...

	TableExprNodeSetElem (Bool isLeftClosed, const TableExprNode &start)
	Create the object for a continuous left-bounded interval. More...

	TableExprNodeSetElem (const TableExprNode &end, Bool isRightClosed)
	Create the object for a continuous right-bounded interval. More...

	TableExprNodeSetElem (const TableExprNodeSetElem &)
	Copy constructor (copy semantics). More...

	~TableExprNodeSetElem ()

void	show (ostream &os, uInt indent) const
	Show the node. More...

virtual void	getAggrNodes (std::vector< TableExprNodeRep * > &aggr)
	Get the nodes representing an aggregate function. More...

virtual void	getColumnNodes (std::vector< TableExprNodeRep * > &cols)
	Get the nodes representing a table column. More...

Bool	isDiscrete () const
	Is it a discrete set element. More...

Bool	isSingle () const
	Is a single value given? More...

Bool	isLeftClosed () const
	Is the interval left or right closed? More...

Bool	isRightClosed () const

const TENShPtr &	start () const
	Get the start, end or increment expression. More...

const TENShPtr &	end () const

const TENShPtr &	increment () const

void	fillVector (Vector< Bool > &vec, Int64 &cnt, const TableExprId &id) const
	Fill a vector with the value(s) from this element by appending them at the end of the vector; the end is given by argument `cnt` which gets incremented with the number of values appended. More...

void	fillVector (Vector< Int64 > &vec, Int64 &cnt, const TableExprId &id) const

void	fillVector (Vector< Double > &vec, Int64 &cnt, const TableExprId &id) const

void	fillVector (Vector< DComplex > &vec, Int64 &cnt, const TableExprId &id) const

void	fillVector (Vector< String > &vec, Int64 &cnt, const TableExprId &id) const

void	fillVector (Vector< MVTime > &vec, Int64 &cnt, const TableExprId &id) const

void	matchBool (Bool match, const Bool value, size_t nval, const TableExprId &id) const
	Set a flag in the match output array if the corresponding element in the value array is included in this set element. More...

void	matchInt (Bool match, const Int64 value, size_t nval, const TableExprId &id) const

void	matchDouble (Bool match, const Double value, size_t nval, const TableExprId &id) const

void	matchDComplex (Bool match, const DComplex value, size_t nval, const TableExprId &id) const

void	matchString (Bool match, const String value, size_t nval, const TableExprId &id) const

void	matchDate (Bool match, const MVTime value, size_t nval, const TableExprId &id) const

TableExprNodeSetElem *	evaluate (const TableExprId &id) const
	Evaluate the element for the given row and construct a new (constant) element from it. More...

void	checkTable ()
	Get the table of a node and check if the children use the same table. More...

virtual void	adaptSetUnits (const Unit &)
	Let a set node convert itself to the given unit. More...

Public Member Functions inherited from casacore::TableExprNodeRep
	TableExprNodeRep (NodeDataType, ValueType, OperType, ArgType, ExprType, Int ndim, const IPosition &shape, const Table &table)
	Construct a node. More...

	TableExprNodeRep (NodeDataType, ValueType, OperType, const Table &)
	This constructor is called from the derived TableExprNodeRep. More...

	TableExprNodeRep (const TableExprNodeRep &)
	Copy constructor. More...

virtual	~TableExprNodeRep ()
	The destructor deletes all the underlying TableExprNode objects. More...

virtual void	disableApplySelection ()
	Do not apply the selection. More...

virtual void	applySelection (const Vector< rownr_t > &rownrs)
	Re-create the column object for a selection of rows. More...

virtual Double	getUnitFactor () const
	Get the unit conversion factor. More...

void	checkAggrFuncs ()
	Throw an exception if an aggregate function is used in the expression node or its children. More...

virtual CountedPtr < TableExprGroupFuncBase >	makeGroupAggrFunc ()
	Create the correct immediate aggregate function object. More...

virtual Bool	isLazyAggregate () const
	Is the aggregate function a lazy or an immediate one? The default implementation returns True (because all UDF aggregate functions have to be lazy). More...

virtual Bool	getBool (const TableExprId &id)
	Get a scalar value for this node in the given row. More...

virtual Int64	getInt (const TableExprId &id)

virtual Double	getDouble (const TableExprId &id)

virtual DComplex	getDComplex (const TableExprId &id)

virtual String	getString (const TableExprId &id)

virtual TaqlRegex	getRegex (const TableExprId &id)

virtual MVTime	getDate (const TableExprId &id)

virtual MArray< Bool >	getArrayBool (const TableExprId &id)
	Get an array value for this node in the given row. More...

virtual MArray< Int64 >	getArrayInt (const TableExprId &id)

virtual MArray< Double >	getArrayDouble (const TableExprId &id)

virtual MArray< DComplex >	getArrayDComplex (const TableExprId &id)

virtual MArray< String >	getArrayString (const TableExprId &id)

virtual MArray< MVTime >	getArrayDate (const TableExprId &id)

void	get (const TableExprId &id, Bool &value)
	General get functions for template purposes. More...

void	get (const TableExprId &id, Int64 &value)

void	get (const TableExprId &id, Double &value)

void	get (const TableExprId &id, DComplex &value)

void	get (const TableExprId &id, MVTime &value)

void	get (const TableExprId &id, String &value)

void	get (const TableExprId &id, MArray< Bool > &value)

void	get (const TableExprId &id, MArray< Int64 > &value)

void	get (const TableExprId &id, MArray< Double > &value)

void	get (const TableExprId &id, MArray< DComplex > &value)

void	get (const TableExprId &id, MArray< MVTime > &value)

void	get (const TableExprId &id, MArray< String > &value)

MArray< Bool >	getBoolAS (const TableExprId &id)
	Get a value as an array, even it it is a scalar. More...

MArray< Int64 >	getIntAS (const TableExprId &id)

MArray< Double >	getDoubleAS (const TableExprId &id)

MArray< DComplex >	getDComplexAS (const TableExprId &id)

MArray< String >	getStringAS (const TableExprId &id)

MArray< MVTime >	getDateAS (const TableExprId &id)

virtual Bool	hasBool (const TableExprId &id, Bool value)
	Does a value occur in an array or set? The default implementation tests if it is in an array. More...

virtual Bool	hasInt (const TableExprId &id, Int64 value)

virtual Bool	hasDouble (const TableExprId &id, Double value)

virtual Bool	hasDComplex (const TableExprId &id, const DComplex &value)

virtual Bool	hasString (const TableExprId &id, const String &value)

virtual Bool	hasDate (const TableExprId &id, const MVTime &value)

virtual MArray< Bool >	hasArrayBool (const TableExprId &id, const MArray< Bool > &value)

virtual MArray< Bool >	hasArrayInt (const TableExprId &id, const MArray< Int64 > &value)

virtual MArray< Bool >	hasArrayDouble (const TableExprId &id, const MArray< Double > &value)

virtual MArray< Bool >	hasArrayDComplex (const TableExprId &id, const MArray< DComplex > &value)

virtual MArray< Bool >	hasArrayString (const TableExprId &id, const MArray< String > &value)

virtual MArray< Bool >	hasArrayDate (const TableExprId &id, const MArray< MVTime > &value)

rownr_t	nrow () const
	Get the number of rows in the table associated with this expression. More...

virtual Bool	getColumnDataType (DataType &) const
	Get the data type of the column. More...

virtual Array< Bool >	getColumnBool (const Vector< rownr_t > &rownrs)
	Get the value of the expression evaluated for the entire column. More...

virtual Array< uChar >	getColumnuChar (const Vector< rownr_t > &rownrs)

virtual Array< Short >	getColumnShort (const Vector< rownr_t > &rownrs)

virtual Array< uShort >	getColumnuShort (const Vector< rownr_t > &rownrs)

virtual Array< Int >	getColumnInt (const Vector< rownr_t > &rownrs)

virtual Array< uInt >	getColumnuInt (const Vector< rownr_t > &rownrs)

virtual Array< Int64 >	getColumnInt64 (const Vector< rownr_t > &rownrs)

virtual Array< Float >	getColumnFloat (const Vector< rownr_t > &rownrs)

virtual Array< Double >	getColumnDouble (const Vector< rownr_t > &rownrs)

virtual Array< Complex >	getColumnComplex (const Vector< rownr_t > &rownrs)

virtual Array< DComplex >	getColumnDComplex (const Vector< rownr_t > &rownrs)

virtual Array< String >	getColumnString (const Vector< rownr_t > &rownrs)

virtual void	ranges (Block< TableExprRange > &)
	Convert the tree to a number of range vectors which at least select the same things. More...

NodeDataType	dataType () const
	Get the data type of the derived TableExprNode object. More...

Bool	isReal () const
	Is the data type real (i.e., integer or double)? More...

ValueType	valueType () const
	Get the value type. More...

void	setValueType (ValueType vtype)
	Set the value type. More...

OperType	operType () const
	Get the operator type. More...

ExprType	exprType () const
	Get the expression type. More...

Bool	isConstant () const
	Is the expression a constant? More...

const Unit &	unit () const
	Get the unit. More...

void	setUnit (const Unit &unit)
	Set the unit. More...

const Record &	attributes () const
	Get the attributes. More...

void	setAttributes (const Record &)
	Set the attributes. More...

Int	ndim () const
	Get the fixed dimensionality (same for all rows). More...

const IPosition &	shape () const
	Get the fixed shape (same for all rows). More...

const IPosition &	shape (const TableExprId &id)
	Get the shape for the given row. More...

virtual Bool	isDefined (const TableExprId &id)
	Is the value in the given row defined? The default implementation returns True. More...

Table &	table ()
	Get table. More...

const Table &	table () const

Private Member Functions
TableExprNodeSetElem &	operator= (const TableExprNodeSetElem &)
	A copy of a TableExprNodeSetElem cannot be made. More...

	TableExprNodeSetElem (const TableExprNodeSetElem &that, const TENShPtr &start, const TENShPtr &end, const TENShPtr &incr)
	Construct an element from the given parts and take over their pointers. More...

void	setup (Bool isLeftClosed, const TableExprNode start, const TableExprNode end, Bool isRightClosed)
	Setup the object for a continuous interval. More...

Private Attributes
TENShPtr	itsStart

TENShPtr	itsEnd

TENShPtr	itsIncr

Bool	itsEndExcl

Bool	itsLeftClosed

Bool	itsRightClosed

Bool	itsDiscrete

Bool	itsSingle

Additional Inherited Members
Public Types inherited from casacore::TableExprNodeRep
enum	NodeDataType { NTBool, NTInt, NTDouble, NTComplex, NTString, NTRegex, NTDate, NTReal, NTDouCom, NTNumeric, NTAny }
	Define the data types of a node. More...

enum	ValueType { VTScalar, VTArray, VTRecord, VTSetElem, VTSet, VTIndex }
	Define the value types. More...

enum	OperType { OtPlus, OtMinus, OtTimes, OtDivide, OtModulo, OtBitAnd, OtBitOr, OtBitXor, OtBitNegate, OtEQ, OtGE, OtGT, OtNE, OtIN, OtAND, OtOR, OtNOT, OtMIN, OtColumn, OtField, OtLiteral, OtFunc, OtSlice, OtUndef, OtRownr, OtRandom }
	Define the operator types. More...

enum	ArgType { NoArr, ArrArr, ArrSca, ScaArr }
	Define the value types of the 2 arguments when arrays are involved. More...

enum	ExprType { Constant, Variable }
	Define (sub-)expression type. More...

Static Public Member Functions inherited from casacore::TableExprNodeRep
static TENShPtr	replaceConstNode (const TENShPtr &node)
	Replace a node with a constant expression by node with its value. More...

static void	createRange (Block< TableExprRange > &, TableExprNodeColumn *, Double start, Double end)
	Create a range object from a column and an interval. More...

static void	createRange (Block< TableExprRange > &)
	Create a empty range object. More...

static String	typeString (NodeDataType)
	Convert a NodeDataType to a string. More...

static String	typeString (ValueType)
	Convert a ValueType to a string. More...

Protected Member Functions inherited from casacore::TableExprNodeRep
virtual const IPosition &	getShape (const TableExprId &id)
	Get the shape for the given row. More...

virtual void	convertConstChild ()
	If one of the children is a constant, convert its data type to that of the other operand (if appropriate). More...

void	checkTablePtr (const TENShPtr &node)
	Check if this node uses the same table pointer. More...

void	fillExprType (const TENShPtr &node)
	Set expression type to Variable if node is Variable. More...

Static Protected Member Functions inherited from casacore::TableExprNodeRep
static void	checkTablePtr (Table &table, const TENShPtr &node)

static void	fillExprType (ExprType &, const TENShPtr &node)

static TENShPtr	convertNode (const TENShPtr &thisNode, Bool convertConstType)
	If the node is constant, it is evaluated and replaced by the appropriate TableExprNodeConst object. More...

Protected Attributes inherited from casacore::TableExprNodeRep
Table	table_p

NodeDataType	dtype_p

ValueType	vtype_p

OperType	optype_p

ArgType	argtype_p

ExprType	exprtype_p

Int	ndim_p

IPosition	shape_p

Unit	unit_p

Record	attributes_p

Detailed Description

Class to hold the table expression nodes for an element in a set.

Intended use:

Public interface

Review Status

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

Prerequisite

Synopsis

This class is used to assemble the table expression nodes representing an element in a set. A set element can be of 3 types:

A single discrete value, which can be of any type. It can be used for 3 purposes:
- A function argument.
- A single index in an array indexing operation.
- A single value in a set (used with the IN operator). This is in fact a bounded discrete interval (see below).
A discrete interval consisting of start, end and increment. Each of those has to be an int scalar. Increment defaults to 1. It can be used for 2 purposes:
- A slice in an array indexing operation. In that case start defaults to the beginning of the dimension and end defaults to the end.
- A discrete interval in a set. Start has to be given. When end is not given, the result is an unbounded discrete interval. For a discrete interval, the type of start and end can also be a datetime scalar.
A continuous interval, which can only be used in a set. It consists of a start and/or an end scalar value of type int, double, datetime, or string. The interval can be open or closed on one or both sides.

Note the difference between a discrete and a continuous interval. E.g. the discrete interval 2,6 consists of the five values 2,3,4,5,6. The continuous interval 2,6 consists of all values between them.
Further note that a bounded discrete interval is automatically converted to a vector, which makes it possible to apply array functions to it.

Definition at line 93 of file ExprNodeSet.h.

Constructor & Destructor Documentation

casacore::TableExprNodeSetElem::TableExprNodeSetElem ( const TableExprNode & node )

explicit

Create the object for a single expression node.

casacore::TableExprNodeSetElem::TableExprNodeSetElem	(	const TableExprNode *	start,
		const TableExprNode *	end,
		const TableExprNode *	incr,
		Bool	isEndExcl = `False`
	)

Create the object for a discrete interval.

Each of the start, end, and incr pointers can be zero meaning that they are not given (see the synopsis for an explanation). Optionally the end is inclusive (C++ and Glish style) or exclusive (Python style).

casacore::TableExprNodeSetElem::TableExprNodeSetElem	(	Bool	isLeftClosed,
		const TableExprNode &	start,
		const TableExprNode &	end,
		Bool	isRightClosed
	)

Create the object for a continuous bounded interval.

It can be open or closed on either side.

casacore::TableExprNodeSetElem::TableExprNodeSetElem	(	Bool	isLeftClosed,
		const TableExprNode &	start
	)

Create the object for a continuous left-bounded interval.

casacore::TableExprNodeSetElem::TableExprNodeSetElem	(	const TableExprNode &	end,
		Bool	isRightClosed
	)

Create the object for a continuous right-bounded interval.

casacore::TableExprNodeSetElem::TableExprNodeSetElem ( const TableExprNodeSetElem & )

Copy constructor (copy semantics).

casacore::TableExprNodeSetElem::~TableExprNodeSetElem ( )

casacore::TableExprNodeSetElem::TableExprNodeSetElem	(	const TableExprNodeSetElem &	that,
		const TENShPtr &	start,
		const TENShPtr &	end,
		const TENShPtr &	incr
	)

private

Construct an element from the given parts and take over their pointers.

It is used by evaluate to construct an element in a rather cheap way.

Member Function Documentation

virtual void casacore::TableExprNodeSetElem::adaptSetUnits ( const Unit & )

virtual

Let a set node convert itself to the given unit.

Reimplemented from casacore::TableExprNodeRep.

void casacore::TableExprNodeSetElem::checkTable ( )

Get the table of a node and check if the children use the same table.

const TENShPtr & casacore::TableExprNodeSetElem::end ( ) const

inline

Definition at line 252 of file ExprNodeSet.h.

References itsEnd.

TableExprNodeSetElem* casacore::TableExprNodeSetElem::evaluate ( const TableExprId & id ) const

Evaluate the element for the given row and construct a new (constant) element from it.

This is used by the system to implement a set in a GIVING clause.

void casacore::TableExprNodeSetElem::fillVector	(	Vector< Bool > &	vec,
		Int64 &	cnt,
		const TableExprId &	id
	)		const

Fill a vector with the value(s) from this element by appending them at the end of the vector; the end is given by argument cnt which gets incremented with the number of values appended.

This is used by the system to convert a set to a vector.

void casacore::TableExprNodeSetElem::fillVector	(	Vector< Int64 > &	vec,
		Int64 &	cnt,
		const TableExprId &	id
	)		const

void casacore::TableExprNodeSetElem::fillVector	(	Vector< Double > &	vec,
		Int64 &	cnt,
		const TableExprId &	id
	)		const

void casacore::TableExprNodeSetElem::fillVector	(	Vector< DComplex > &	vec,
		Int64 &	cnt,
		const TableExprId &	id
	)		const

void casacore::TableExprNodeSetElem::fillVector	(	Vector< String > &	vec,
		Int64 &	cnt,
		const TableExprId &	id
	)		const

void casacore::TableExprNodeSetElem::fillVector	(	Vector< MVTime > &	vec,
		Int64 &	cnt,
		const TableExprId &	id
	)		const

virtual void casacore::TableExprNodeSetElem::getAggrNodes ( std::vector< TableExprNodeRep * > & aggr )

virtual

Get the nodes representing an aggregate function.

Reimplemented from casacore::TableExprNodeRep.

virtual void casacore::TableExprNodeSetElem::getColumnNodes ( std::vector< TableExprNodeRep * > & cols )

virtual

Get the nodes representing a table column.

Reimplemented from casacore::TableExprNodeRep.

const TENShPtr & casacore::TableExprNodeSetElem::increment ( ) const

inline

Definition at line 256 of file ExprNodeSet.h.

References itsIncr.

Bool casacore::TableExprNodeSetElem::isDiscrete ( ) const

inline

Is it a discrete set element.

Definition at line 232 of file ExprNodeSet.h.

References itsDiscrete.

Bool casacore::TableExprNodeSetElem::isLeftClosed ( ) const

inline

Is the interval left or right closed?

Definition at line 240 of file ExprNodeSet.h.

References itsLeftClosed.

Bool casacore::TableExprNodeSetElem::isRightClosed ( ) const

inline

Definition at line 244 of file ExprNodeSet.h.

References itsRightClosed.

Bool casacore::TableExprNodeSetElem::isSingle ( ) const

inline

Is a single value given?

Definition at line 236 of file ExprNodeSet.h.

References itsSingle.

void casacore::TableExprNodeSetElem::matchBool	(	Bool *	match,
		const Bool *	value,
		size_t	nval,
		const TableExprId &	id
	)		const

Set a flag in the match output array if the corresponding element in the value array is included in this set element.

This is used by the system to implement the IN operator.
Note that it does NOT set match values to False; it is assumed they are initialized that way.

void casacore::TableExprNodeSetElem::matchDate	(	Bool *	match,
		const MVTime *	value,
		size_t	nval,
		const TableExprId &	id
	)		const

void casacore::TableExprNodeSetElem::matchDComplex	(	Bool *	match,
		const DComplex *	value,
		size_t	nval,
		const TableExprId &	id
	)		const

void casacore::TableExprNodeSetElem::matchDouble	(	Bool *	match,
		const Double *	value,
		size_t	nval,
		const TableExprId &	id
	)		const

void casacore::TableExprNodeSetElem::matchInt	(	Bool *	match,
		const Int64 *	value,
		size_t	nval,
		const TableExprId &	id
	)		const

void casacore::TableExprNodeSetElem::matchString	(	Bool *	match,
		const String *	value,
		size_t	nval,
		const TableExprId &	id
	)		const

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

private

A copy of a TableExprNodeSetElem cannot be made.

void casacore::TableExprNodeSetElem::setup	(	Bool	isLeftClosed,
		const TableExprNode *	start,
		const TableExprNode *	end,
		Bool	isRightClosed
	)

private

Setup the object for a continuous interval.

void casacore::TableExprNodeSetElem::show	(	ostream &	os,
		uInt	indent
	)		const

virtual

Show the node.

Reimplemented from casacore::TableExprNodeRep.

const TENShPtr & casacore::TableExprNodeSetElem::start ( ) const

inline

Get the start, end or increment expression.

Note that the pointer returned can be zero indicating that that value was not given.

Definition at line 248 of file ExprNodeSet.h.

References itsStart.

Member Data Documentation

Bool casacore::TableExprNodeSetElem::itsDiscrete

private

Definition at line 226 of file ExprNodeSet.h.

Referenced by isDiscrete().

TENShPtr casacore::TableExprNodeSetElem::itsEnd

private

Definition at line 221 of file ExprNodeSet.h.

Referenced by end().

Bool casacore::TableExprNodeSetElem::itsEndExcl

private

Definition at line 223 of file ExprNodeSet.h.

TENShPtr casacore::TableExprNodeSetElem::itsIncr

private

Definition at line 222 of file ExprNodeSet.h.

Referenced by increment().

Bool casacore::TableExprNodeSetElem::itsLeftClosed

private

Definition at line 224 of file ExprNodeSet.h.

Referenced by isLeftClosed().

Bool casacore::TableExprNodeSetElem::itsRightClosed

private

Definition at line 225 of file ExprNodeSet.h.

Referenced by isRightClosed().

Bool casacore::TableExprNodeSetElem::itsSingle

private

Definition at line 227 of file ExprNodeSet.h.

Referenced by isSingle().

TENShPtr casacore::TableExprNodeSetElem::itsStart

private

Definition at line 220 of file ExprNodeSet.h.

Referenced by start().

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

tables/TaQL/ExprNodeSet.h

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Intended use:

Review Status

Prerequisite

Synopsis

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation