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

A column in a join table. More...

`#include <TaQLJoin.h>`

## Public Member Functions

| TaQLJoinColumn (const TENShPtr &columnNode, const TableParseJoin &)
| ~TaQLJoinColumn () override=default
TableExprInfo | getTableInfo () const override
| Get the table info for this column.
MArray< Bool > | getArrayBool (const TableExprId &id) override
| Get the data for the given id.
MArray< Int64 > | getArrayInt (const TableExprId &id) override
MArray< Double > | getArrayDouble (const TableExprId &id) override
MArray< DComplex > | getArrayDComplex (const TableExprId &id) override
MArray< String > | getArrayString (const TableExprId &id) override
MArray< MVTime > | getArrayDate (const TableExprId &id) override
virtual void | clear ()
| Clear the internal data vector (in derived classes).
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 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 void | flattenTree (std::vector< TableExprNodeRep * > &)
| Flatten the node tree by adding the node and its children to the vector.
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)
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 | show (ostream &, uInt indent) const
| Show the expression tree.
virtual void | adaptSetUnits (const Unit &)
| Let a set node convert itself to the given unit.

## Static Public Member Functions

static TableExprNode | makeColumnNode (const TENShPtr &columnNode, const TableParseJoin &)
| Make the appropriate TaQLJoinColumn object.
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 Attributes

TENShPtr | itsColumn
const TableParseJoin & | itsJoin
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.
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.

## Detailed Description

A column in a join table.

### Intended use:

Internal

### Review Status

Reviewed By:
  Tammo Jan Dijkema
Date Reviewed:
  2022/12/15
Test programs:
  tTableGramJoin

### Synopsis

TaQLJoinColumn contains the TableExprNodeColumn object for a column in a join table. It is used to find a value in the join column for a row in the main table. It uses the TableParseJoin object to find the row in the join table given the row in the main table.

Definition at line 214 of file TaQLJoin.h.

## Constructor & Destructor Documentation

## TaQLJoinColumn()

casacore::TaQLJoinColumn::TaQLJoinColumn | ( | const TENShPtr & | columnNode,
|  | const TableParseJoin & | )

## ~TaQLJoinColumn()

casacore::TaQLJoinColumn::~TaQLJoinColumn | ( |  | ) |

override default

## Member Function Documentation

## clear()

virtual void casacore::TaQLJoinColumn::clear | ( |  | ) |

virtual

Clear the internal data vector (in derived classes).

Reimplemented in casacore::TaQLJoinColumnBool, casacore::TaQLJoinColumnDate, casacore::TaQLJoinColumnDComplex, casacore::TaQLJoinColumnDouble, casacore::TaQLJoinColumnInt, and casacore::TaQLJoinColumnString.

## getArrayBool()

MArray< Bool > casacore::TaQLJoinColumn::getArrayBool | ( | const TableExprId & | id | ) |

override virtual

Get the data for the given id.

Using the Join object it maps the row number in the main table to the row number in the join table.

Reimplemented from casacore::TableExprNodeRep.

## getArrayDate()

MArray< MVTime > casacore::TaQLJoinColumn::getArrayDate | ( | const TableExprId & | id | ) |

override virtual

Reimplemented from casacore::TableExprNodeRep.

## getArrayDComplex()

MArray< DComplex > casacore::TaQLJoinColumn::getArrayDComplex | ( | const TableExprId & | id | ) |

override virtual

Reimplemented from casacore::TableExprNodeRep.

## getArrayDouble()

MArray< Double > casacore::TaQLJoinColumn::getArrayDouble | ( | const TableExprId & | id | ) |

override virtual

Reimplemented from casacore::TableExprNodeRep.

## getArrayInt()

MArray< Int64 > casacore::TaQLJoinColumn::getArrayInt | ( | const TableExprId & | id | ) |

override virtual

Reimplemented from casacore::TableExprNodeRep.

## getArrayString()

MArray< String > casacore::TaQLJoinColumn::getArrayString | ( | const TableExprId & | id | ) |

override virtual

Reimplemented from casacore::TableExprNodeRep.

## getTableInfo()

TableExprInfo casacore::TaQLJoinColumn::getTableInfo | ( |  | ) | const

override virtual

Get the table info for this column.

Reimplemented from casacore::TableExprNodeRep.

## makeColumnNode()

TableExprNode casacore::TaQLJoinColumn::makeColumnNode | ( | const TENShPtr & | columnNode,
|  | const TableParseJoin & | )

static

Make the appropriate TaQLJoinColumn object.

## Member Data Documentation

## itsColumn

TENShPtr casacore::TaQLJoinColumn::itsColumn

protected

Definition at line 244 of file TaQLJoin.h.

## itsJoin

const TableParseJoin& casacore::TaQLJoinColumn::itsJoin

protected

Definition at line 245 of file TaQLJoin.h.

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

- tables/TaQL/TaQLJoin.h