casa::TableExprUDFNodeArray Class Reference

Class representing a function in table select expression. More...

#include <ExprUDFNodeArray.h>

Inheritance diagram for casa::TableExprUDFNodeArray:

List of all members.

Public Member Functions
	TableExprUDFNodeArray (UDFBase *udf, const Table &, const TableExprNodeSet &source)
	Constructor.
virtual	~TableExprUDFNodeArray ()
	Destructor.
virtual Array< Bool >	getArrayBool (const TableExprId &id)
	Functions to get the desired result of a function.
virtual Array< Int64 >	getArrayInt (const TableExprId &id)
virtual Array< Double >	getArrayDouble (const TableExprId &id)
virtual Array< DComplex >	getArrayDComplex (const TableExprId &id)
	The default implementation of getArrayDComplex does getArrayDouble and converts the result.
virtual Array< String >	getArrayString (const TableExprId &id)
virtual Array< MVTime >	getArrayDate (const TableExprId &id)
Private Attributes
UDFBase *	itsUDF

---

Detailed Description

Class representing a function in table select expression.

Intended use:

Internal

Review Status

Reviewed By:

UNKNOWN

Date Reviewed:

before2004/08/25

Prerequisite

• TableExprNodeMulti

Synopsis

This class represents a function in a table select tree. The rownumber function is represented by class TableExprNodeRownr . The rowid function is represented by class TableExprNodeRowid . The rand function is represented by class TableExprNodeRandom .

When one wants to add a function to the table selection grammar, the following has to be done:

• Add the function to the enum below.
• Implement the function in the get functions in ExprFuncNode(Array).cc.
• Implement the function in the checkOperands in ExprFuncNode.cc.
• Declare and define the function in ExprNode.h (for C++ binding).
• Add the function to findFunc in TableParse.cc (for TaQL).

Definition at line 74 of file ExprUDFNodeArray.h.

---

Constructor & Destructor Documentation

casa::TableExprUDFNodeArray::TableExprUDFNodeArray	(	UDFBase *	udf,
		const Table &	,
		const TableExprNodeSet &	source
	)

Constructor.

virtual casa::TableExprUDFNodeArray::~TableExprUDFNodeArray

(

)

[virtual]

Destructor.

---

Member Function Documentation

virtual Array<Bool> casa::TableExprUDFNodeArray::getArrayBool

(

const TableExprId &

id

)

[virtual]

Functions to get the desired result of a function.

Reimplemented from casa::TableExprNodeRep.

virtual Array<MVTime> casa::TableExprUDFNodeArray::getArrayDate

(

const TableExprId &

id

)

[virtual]

Reimplemented from casa::TableExprNodeRep.

virtual Array<DComplex> casa::TableExprUDFNodeArray::getArrayDComplex

(

const TableExprId &

id

)

[virtual]

The default implementation of getArrayDComplex does getArrayDouble and converts the result.

Reimplemented from casa::TableExprNodeArray.

virtual Array<Double> casa::TableExprUDFNodeArray::getArrayDouble

(

const TableExprId &

id

)

[virtual]

Reimplemented from casa::TableExprNodeRep.

virtual Array<Int64> casa::TableExprUDFNodeArray::getArrayInt

(

const TableExprId &

id

)

[virtual]

Reimplemented from casa::TableExprNodeRep.

virtual Array<String> casa::TableExprUDFNodeArray::getArrayString

(

const TableExprId &

id

)

[virtual]

Reimplemented from casa::TableExprNodeRep.

---

Member Data Documentation

UDFBase* casa::TableExprUDFNodeArray::itsUDF [private]

Definition at line 96 of file ExprUDFNodeArray.h.

---

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

• casacore/tables/Tables/ExprUDFNodeArray.h