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/* Copyright (C) 2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <codegen/Code_expr_conv.hpp>
void
Exec_expr_conv::evaluate(Ctx& ctx, Ctl& ctl)
{
const Code& code = getCode();
Data& data = getData();
const SqlType& t1 = code.sqlSpec().sqlType();
SqlField& f1 = ctl.m_groupIndex == 0 ? data.m_sqlField : data.groupField(code.sqlSpec().sqlType() , ctl.m_groupIndex, ctl.m_groupInit);
// evaluate the subexpression
ctx_assert(m_expr != 0);
m_expr->evaluate(ctx, ctl);
if (! ctx.ok())
return;
if (ctl.m_postEval)
return;
const SqlType& t2 = m_expr->getCode().sqlSpec().sqlType();
const SqlField& f2 = ctl.m_groupIndex == 0 ? m_expr->getData().sqlField() : m_expr->getData().groupField(ctl.m_groupIndex);
// conversion to null type
if (t1.type() == SqlType::Null) {
f1.sqlNull(true);
return;
}
// conversion of null data
if (f2.sqlNull()) {
f1.sqlNull(true);
return;
}
// try to convert
if (! f2.cast(ctx, f1)) {
char b1[40], b2[40], b3[40];
t1.print(b1, sizeof(b1));
t2.print(b2, sizeof(b2));
f2.print(b3, sizeof(b3));
ctx.pushStatus(Sqlstate::_22003, Error::Gen, "cannot convert %s [%s] to %s", b2, b3, b1);
return;
}
}
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