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//////////////////////////////////////////////////////////////////////////
//
// pgScript - PostgreSQL Tools
//
// Copyright (C) 2002 - 2012, The pgAdmin Development Team
// This software is released under the PostgreSQL Licence
//
//////////////////////////////////////////////////////////////////////////
#include "pgAdmin3.h"
#include "pgscript/expressions/pgsColumns.h"
#include "pgscript/objects/pgsNumber.h"
#include "pgscript/objects/pgsRecord.h"
pgsColumns::pgsColumns(const wxString &name) :
pgsExpression(), m_name(name)
{
}
pgsColumns::~pgsColumns()
{
}
pgsExpression *pgsColumns::clone() const
{
return pnew pgsColumns(*this);
}
wxString pgsColumns::value() const
{
return wxString() << wxT("COLUMNS(") << m_name << wxT(")");
}
pgsOperand pgsColumns::eval(pgsVarMap &vars) const
{
if (vars.find(m_name) != vars.end())
{
if (vars[m_name]->is_record())
{
const pgsRecord &rec = dynamic_cast<const pgsRecord &>(*vars[m_name]);
return pnew pgsNumber(wxString() << rec.count_columns(), pgsInt);
}
else
{
// Not a record: 1 line and 1 column
return pnew pgsNumber(wxT("1"), pgsInt);
}
}
else
{
// Does not exist: 0 line and 0 column
return pnew pgsNumber(wxT("0"), pgsInt);
}
}
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