Rowid in table select expression tree. More...

#include <ExprDerNode.h>

Public Member Functions
	TableExprNodeRowid (const TableExprInfo &)

	~TableExprNodeRowid () override=default

TableExprInfo	getTableInfo () const override
	Get the table info.

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

Int64	getInt (const TableExprId &id) override

Public Member Functions inherited from casacore::TableExprNodeBinary
	TableExprNodeBinary (NodeDataType, ValueType, OperType, ExprType)
	Constructor.

	TableExprNodeBinary (NodeDataType, const TableExprNodeRep &, OperType)

	~TableExprNodeBinary () override=default
	Destructor.

void	show (ostream &, uInt indent) const override
	Show the expression tree.

void	flattenTree (std::vector< TableExprNodeRep * > &) override
	Flatten the node tree by adding the node and its children to the vector.

void	setChildren (const TENShPtr &left, const TENShPtr &right, Bool adapt=True)
	Set the children.

virtual void	handleUnits ()
	Handle the units of the children and possibly set the parent's unit.

void	adaptDataTypes ()
	If one of the children is a constant, convert its data type to that of the other operand.

const TENShPtr &	getLeftChild () const
	Get the child nodes.

const TENShPtr &	getRightChild () const

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

	TableExprNodeRep (NodeDataType, ValueType, OperType, ExprType)
	This constructor is called from the derived TableExprNodeRep.

	TableExprNodeRep (const TableExprNodeRep &)=default
	Copy constructor.

TableExprNodeRep &	operator= (const TableExprNodeRep &)=delete
	Assign to a TableExprNodeRep cannot be done.

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

virtual Bool	isAggregate () const
	Is the node an aggegation node.

virtual void	optimize ()
	Try to optimize the node (meant for the right hand of the IN operator).

virtual void	disableApplySelection ()
	Do not apply the selection.

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

virtual std::shared_ptr< TableExprGroupFuncBase >	makeGroupAggrFunc ()
	Create the correct immediate aggregate function object.

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).

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

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.

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.

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.

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	contains (const TableExprId &id, Bool value)
	Does a set or array contain the value? The default implementation assumes the set is a single scalar, thus tests if it is equal to the given value.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

ValueType	valueType () const
	Get the value type.

void	setValueType (ValueType vtype)
	Set the value type.

OperType	operType () const
	Get the operator type.

ExprType	exprType () const
	Get the expression type.

Bool	isConstant () const
	Is the expression a constant?

const Unit &	unit () const
	Get the unit.

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

const Record &	attributes () const
	Get the attributes.

void	setAttributes (const Record &)
	Set the attributes.

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

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

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

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

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

Private Attributes
TableExprInfo	tableInfo_p

Vector< rownr_t >	rownrs_p

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::TableExprNodeBinary
static NodeDataType	getDT (NodeDataType leftDtype, NodeDataType rightDype, OperType operType)
	Check the data types and get the common one.

static TableExprNodeRep	getCommonTypes (const TENShPtr &left, const TENShPtr &right, OperType operType)
	Check the data and value types and get the common one.

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.

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

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

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

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

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

void	fillExprType (const TableExprNodeRep *node)
	Set expression type to Variable if node is Variable.

Static Protected Member Functions inherited from casacore::TableExprNodeBinary
static const Unit &	makeEqualUnits (const TENShPtr &left, TENShPtr &right)
	Make the units equal.

Static Protected Member Functions inherited from casacore::TableExprNodeRep
static TENShPtr	convertNode (const TENShPtr &thisNode, Bool convertConstType)
	If the node is constant, it is evaluated and replaced by the appropriate TableExprNodeConst object.

Protected Attributes inherited from casacore::TableExprNodeBinary
TENShPtr	lnode_p

TENShPtr	rnode_p

Protected Attributes inherited from casacore::TableExprNodeRep
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

Rowid in table select expression tree.

Intended use:

Internal

Review Status

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

Prerequisite

TableExprNode

Synopsis

This class represents the rowid() function in a table select expression tree. It is meant to get the original row number in a GIVING clause, but, of course, it can also be used in the SELECT clause. The row number returned is 0-based.

Definition at line 405 of file ExprDerNode.h.

Constructor & Destructor Documentation

◆ TableExprNodeRowid()

casacore::TableExprNodeRowid::TableExprNodeRowid ( const TableExprInfo & )

◆ ~TableExprNodeRowid()

casacore::TableExprNodeRowid::~TableExprNodeRowid ( )

overridedefault

Member Function Documentation

◆ applySelection()

void casacore::TableExprNodeRowid::applySelection ( const Vector< rownr_t > & rownrs )

overridevirtual

Re-create the column object for a selection of rows.

The default implementation does nothing.

Reimplemented from casacore::TableExprNodeRep.

◆ getInt()

Int64 casacore::TableExprNodeRowid::getInt ( const TableExprId & id )

overridevirtual

Reimplemented from casacore::TableExprNodeRep.

◆ getTableInfo()

TableExprInfo casacore::TableExprNodeRowid::getTableInfo ( ) const

overridevirtual

Get the table info.

The default implementation returns an info object with a null table.

Reimplemented from casacore::TableExprNodeRep.

Member Data Documentation

◆ rownrs_p

Vector<rownr_t> casacore::TableExprNodeRowid::rownrs_p

private

Definition at line 415 of file ExprDerNode.h.

◆ tableInfo_p

TableExprInfo casacore::TableExprNodeRowid::tableInfo_p

private

Definition at line 414 of file ExprDerNode.h.

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

tables/TaQL/ExprDerNode.h

Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Intended use:

Review Status

Prerequisite

Synopsis

Constructor & Destructor Documentation

◆ TableExprNodeRowid()

◆ ~TableExprNodeRowid()

Member Function Documentation

◆ applySelection()

◆ getInt()

◆ getTableInfo()

Member Data Documentation

◆ rownrs_p

◆ tableInfo_p