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//# ExprUDFNode.cc: Class representing a scalar UDF in select expression
//# Copyright (C) 2010
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
//# Includes
#include <casacore/tables/TaQL/ExprUDFNode.h>
#include <casacore/tables/TaQL/ExprNodeSet.h>
#include <casacore/tables/TaQL/ExprGroup.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
TableExprUDFNode::TableExprUDFNode (UDFBase* udf, const Table& tab,
const TableExprNodeSet& source)
: TableExprNodeMulti (udf->dataType(), VTScalar, OtFunc, source),
itsUDF (udf)
{
// Set the table. This is needed for ExprNode::checkReplaceTable to work.
table_p = tab;
// The source may be empty which causes the expression type
// to be made constant. Force it to be variable if needed.
if (udf->isConstant()) {
exprtype_p = Constant;
} else {
exprtype_p = Variable;
}
// Set the unit and attributes (is also fine if undefined).
setUnit (Unit(udf->getUnit()));
setAttributes (udf->getAttributes());
}
TableExprUDFNode::~TableExprUDFNode()
{
delete itsUDF;
}
void TableExprUDFNode::getAggrNodes (vector<TableExprNodeRep*>& aggr)
{
uInt naggr = aggr.size();
itsUDF->getAggrNodes (aggr);
if (itsUDF->isAggregate()) {
// If the UDF itself is an aggregate function, its operands should not
// contain aggregate functions.
if (naggr != aggr.size()) {
throw TableInvExpr ("The argument of an aggregate function cannot use "
"an aggregate function");
}
aggr.push_back (this);
}
}
void TableExprUDFNode::getColumnNodes (vector<TableExprNodeRep*>& cols)
{
itsUDF->getColumnNodes (cols);
cols.push_back (this);
}
void TableExprUDFNode::disableApplySelection()
{ itsUDF->disableApplySelection(); }
void TableExprUDFNode::applySelection (const Vector<rownr_t>& rownrs)
{ itsUDF->applySelection (rownrs); }
CountedPtr<TableExprGroupFuncBase> TableExprUDFNode::makeGroupAggrFunc()
{
return new TableExprGroupNull(this);
}
Bool TableExprUDFNode::getBool (const TableExprId& id)
{ return itsUDF->getBool (id); }
Int64 TableExprUDFNode::getInt (const TableExprId& id)
{ return itsUDF->getInt (id); }
Double TableExprUDFNode::getDouble (const TableExprId& id)
{ return itsUDF->getDouble (id); }
DComplex TableExprUDFNode::getDComplex (const TableExprId& id)
{ return itsUDF->getDComplex (id); }
String TableExprUDFNode::getString (const TableExprId& id)
{ return itsUDF->getString (id); }
TaqlRegex TableExprUDFNode::getRegex (const TableExprId& id)
{ return itsUDF->getRegex (id); }
MVTime TableExprUDFNode::getDate (const TableExprId& id)
{ return itsUDF->getDate (id); }
} //# NAMESPACE CASACORE - END
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