Double comparison == in table select expression tree. More...

#include <ExprLogicNode.h>

Public Member Functions
	TableExprNodeEQDouble (const TableExprNodeRep &)

	~TableExprNodeEQDouble ()

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

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

Public Member Functions inherited from casacore::TableExprNodeBinary
	TableExprNodeBinary (NodeDataType, ValueType, OperType, const Table &)
	Constructor. More...

	TableExprNodeBinary (NodeDataType, const TableExprNodeRep &, OperType)

virtual	~TableExprNodeBinary ()
	Destructor. More...

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

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

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

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

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

const TENShPtr &	getRightChild () const

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 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)

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

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

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. More...

static TableExprNodeRep	getCommonTypes (const TENShPtr &left, const TENShPtr &right, OperType operType)
	Check the data and value types and get the common one. 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::TableExprNodeBinary
static const Unit &	makeEqualUnits (const TENShPtr &left, TENShPtr &right)
	Make the units equal. 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::TableExprNodeBinary
TENShPtr	lnode_p

TENShPtr	rnode_p

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

Double comparison == in table select expression tree.

Intended use:

Internal

Review Status

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

Prerequisite

TableExprNode

Synopsis

This class represents an == comparison in a table select expression tree. This is defined for all data types. Only the Bool get function is defined, because the result of a compare is always a Bool.

Definition at line 131 of file ExprLogicNode.h.

Constructor & Destructor Documentation

◆ TableExprNodeEQDouble()

casacore::TableExprNodeEQDouble::TableExprNodeEQDouble ( const TableExprNodeRep & )

◆ ~TableExprNodeEQDouble()

casacore::TableExprNodeEQDouble::~TableExprNodeEQDouble ( )

Member Function Documentation

◆ getBool()

Bool casacore::TableExprNodeEQDouble::getBool ( const TableExprId & id )

virtual

Get a scalar value for this node in the given row.

The appropriate functions are implemented in the derived classes and will usually invoke the get in their children and apply the operator on the resulting values.

Reimplemented from casacore::TableExprNodeRep.

◆ ranges()

void casacore::TableExprNodeEQDouble::ranges ( Block< TableExprRange > & )

virtual

Convert the tree to a number of range vectors which at least select the same things.

This function is very useful to convert the expression to some intervals covering the select expression. This can be used to do a rough fast selection via an index and do the the slower final selection on that much smaller subset. The function can only convert direct comparisons of columns with constants (via ==, !=, >, >=, < or <=) and their combinations using && or ||.

Reimplemented from casacore::TableExprNodeRep.

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

tables/TaQL/ExprLogicNode.h

Public Member Functions

Additional Inherited Members

Detailed Description

Intended use:

Review Status

Prerequisite

Synopsis

Constructor & Destructor Documentation

◆ TableExprNodeEQDouble()

◆ ~TableExprNodeEQDouble()

Member Function Documentation

◆ getBool()

◆ ranges()