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casacore::TableExprNodeBinary Class Reference
tables package (libcasa_tables) » TaQL_module » TaQL_module_internal_classes

Abstract base class for a node having 0, 1, or 2 child nodes. More...

`#include <ExprNodeRep.h>`

## Public Member Functions

| 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 TableExprInfo | getTableInfo () const
| Get the table info.
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 void | applySelection (const Vector< rownr_t > &rownrs)
| Re-create the column object for a selection of rows.
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?
virtual Bool | getBool (const TableExprId &id)
| Get a scalar value for this node in the given row.
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.
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?
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?
virtual void | adaptSetUnits (const Unit &)
| Let a set node convert itself to the given unit.

## Static Public Member Functions

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.

## Static Protected Member Functions

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

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

## 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...
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.

## Detailed Description

Abstract base class for a node having 0, 1, or 2 child nodes.

### Intended use:

Internal

### Review Status

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

### Prerequisite

- TableExprNodeRep

### Etymology

TableExprNodeBinary is a node in the table expression tree representing a binary node (i.e. having up to 2 operands).

### Synopsis

TableExprNodeBinary is the abstract base class for all nodes in a table expression tree using up to 2 operands. It is used as the base class for the node classes representing operator +, -, etc..

### Motivation

This class contains the common functionality for the classes representing a binary (or unary) operator.

Definition at line 581 of file ExprNodeRep.h.

## Constructor & Destructor Documentation

## TableExprNodeBinary() [1/2]

casacore::TableExprNodeBinary::TableExprNodeBinary | ( | NodeDataType | ,
|  | ValueType | ,
|  | OperType | ,
|  | ExprType | )

Constructor.

## TableExprNodeBinary() [2/2]

casacore::TableExprNodeBinary::TableExprNodeBinary | ( | NodeDataType | ,
|  | const TableExprNodeRep & | ,
|  | OperType | )

References casacore::TableExprNodeRep::TableExprNodeRep().

## ~TableExprNodeBinary()

casacore::TableExprNodeBinary::~TableExprNodeBinary | ( |  | ) |

override default

Destructor.

## Member Function Documentation

## adaptDataTypes()

void casacore::TableExprNodeBinary::adaptDataTypes | ( |  | ) |

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

This avoids that conversions are done for each get.

## flattenTree()

void casacore::TableExprNodeBinary::flattenTree | ( | std::vector< TableExprNodeRep * > & |  | ) |

override virtual

Flatten the node tree by adding the node and its children to the vector.

Reimplemented from casacore::TableExprNodeRep.

Reimplemented in casacore::TableExprUDFNodeArray.

## getCommonTypes()

TableExprNodeRep casacore::TableExprNodeBinary::getCommonTypes | ( | const TENShPtr & | left,
|  | const TENShPtr & | right,
|  | OperType | operType )

static

Check the data and value types and get the common one.

References casacore::TableExprNodeRep::operType(), and casacore::TableExprNodeRep::TableExprNodeRep().

## getDT()

NodeDataType casacore::TableExprNodeBinary::getDT | ( | NodeDataType | leftDtype,
|  | NodeDataType | rightDype,
|  | OperType | operType )

static

Check the data types and get the common one.

References casacore::TableExprNodeRep::operType().

## getLeftChild()

const TENShPtr & casacore::TableExprNodeBinary::getLeftChild | ( |  | ) | const

inline

Get the child nodes.

Definition at line 624 of file ExprNodeRep.h.

References lnode_p.

## getRightChild()

const TENShPtr & casacore::TableExprNodeBinary::getRightChild | ( |  | ) | const

inline

Definition at line 626 of file ExprNodeRep.h.

References rnode_p.

## handleUnits()

virtual void casacore::TableExprNodeBinary::handleUnits | ( |  | ) |

virtual

Handle the units of the children and possibly set the parent's unit.

The default implementation make the units of the children equal and set the parent unit to that unit if the parent is not a Bool value.

Reimplemented in casacore::TableExprNodeArrayDivide, casacore::TableExprNodeArrayMinusDate, casacore::TableExprNodeArrayModulo, casacore::TableExprNodeArrayPlusDate, casacore::TableExprNodeArrayTimes, casacore::TableExprNodeDivide, casacore::TableExprNodeMinusDate, casacore::TableExprNodeMinusDouble, casacore::TableExprNodeMinusInt, casacore::TableExprNodeModulo, casacore::TableExprNodePlusDate, and casacore::TableExprNodeTimes.

## makeEqualUnits()

const Unit & casacore::TableExprNodeBinary::makeEqualUnits | ( | const TENShPtr & | left,
|  | TENShPtr & | right )

static protected

Make the units equal.

Replace the right node if needed.

## setChildren()

void casacore::TableExprNodeBinary::setChildren | ( | const TENShPtr & | left,
|  | const TENShPtr & | right,
|  | Bool | adapt = True )

Set the children.

If needed, their properties like data type and unit are adapted.

References casacore::True.

## show()

void casacore::TableExprNodeBinary::show | ( | ostream & | ,
|  | uInt | indent ) const

override virtual

Show the expression tree.

Reimplemented from casacore::TableExprNodeRep.

## Member Data Documentation

## lnode_p

TENShPtr casacore::TableExprNodeBinary::lnode_p

protected

Definition at line 636 of file ExprNodeRep.h.

Referenced by getLeftChild().

## rnode_p

TENShPtr casacore::TableExprNodeBinary::rnode_p

protected

Definition at line 637 of file ExprNodeRep.h.

Referenced by getRightChild().

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

- tables/TaQL/ExprNodeRep.h