Functions
void	checkAggrFuncs (TableExprNodeRep *node)
	Throw an exception if an aggregate function is used in the expression node or its children.

std::vector< TableExprNodeRep * >	getAggrNodes (TableExprNodeRep *node)
	Get the aggregate function nodes used in the node and its children.

std::vector< TableExprNodeRep * >	getColumnNodes (TableExprNodeRep *node)
	Get the column nodes used in the node and its children.

std::vector< Table >	getNodeTables (TableExprNodeRep *node, Bool properMain)
	Get the (unique) tables used in the node and its children.

rownr_t	getCheckNRow (const std::vector< Table > &)
	Get the nr of rows in the tables used.

Detailed Description

Class to handle a Regex or StringDistance.

Intended use:

Internal

Review Status

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

Prerequisite

Synopsis

A StringDistance (Levensthein distance) in TaQL is given in the same way as a Regex. This class is needed to have a single object in the parse tree objects containing them (in class TableExprNodeConstRegex).

Function Documentation

◆ checkAggrFuncs()

void casacore::TableExprNodeUtil::checkAggrFuncs ( TableExprNodeRep * node )

Throw an exception if an aggregate function is used in the expression node or its children.

◆ getAggrNodes()

std::vector< TableExprNodeRep * > casacore::TableExprNodeUtil::getAggrNodes ( TableExprNodeRep * node )

Get the aggregate function nodes used in the node and its children.

◆ getCheckNRow()

rownr_t casacore::TableExprNodeUtil::getCheckNRow ( const std::vector< Table > & )

Get the nr of rows in the tables used.

An exception is thrown if the tables differ in the nr of rows.

◆ getColumnNodes()

std::vector< TableExprNodeRep * > casacore::TableExprNodeUtil::getColumnNodes ( TableExprNodeRep * node )

Get the column nodes used in the node and its children.

◆ getNodeTables()

std::vector< Table > casacore::TableExprNodeUtil::getNodeTables	(	TableExprNodeRep *	node,
		Bool	properMain
	)

Get the (unique) tables used in the node and its children.

If properMain only proper main tables (i.e., tables specified in the FROM clause) are returned.

Functions