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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <drizzled/function/field.h>
#include <drizzled/item/cmpfunc.h>
// Conversion functions
namespace drizzled
{
int64_t Item_func_field::val_int()
{
assert(fixed == 1);
if (cmp_type == STRING_RESULT)
{
String *field;
if (!(field= args[0]->val_str(&value)))
return 0;
for (uint32_t i=1 ; i < arg_count ; i++)
{
String *tmp_value=args[i]->val_str(&tmp);
if (tmp_value && !sortcmp(field,tmp_value,cmp_collation.collation))
return (int64_t) (i);
}
}
else if (cmp_type == INT_RESULT)
{
int64_t val= args[0]->val_int();
if (args[0]->null_value)
return 0;
for (uint32_t i=1; i < arg_count ; i++)
{
if (val == args[i]->val_int() && !args[i]->null_value)
return (int64_t) (i);
}
}
else if (cmp_type == DECIMAL_RESULT)
{
type::Decimal dec_arg_buf, *dec_arg,
dec_buf, *dec= args[0]->val_decimal(&dec_buf);
if (args[0]->null_value)
return 0;
for (uint32_t i=1; i < arg_count; i++)
{
dec_arg= args[i]->val_decimal(&dec_arg_buf);
if (!args[i]->null_value && !class_decimal_cmp(dec_arg, dec))
return (int64_t) (i);
}
}
else
{
double val= args[0]->val_real();
if (args[0]->null_value)
return 0;
for (uint32_t i=1; i < arg_count ; i++)
{
if (val == args[i]->val_real() && !args[i]->null_value)
return (int64_t) (i);
}
}
return 0;
}
void Item_func_field::fix_length_and_dec()
{
maybe_null=0; max_length=3;
cmp_type= args[0]->result_type();
for (uint32_t i=1; i < arg_count ; i++)
cmp_type= item_cmp_type(cmp_type, args[i]->result_type());
if (cmp_type == STRING_RESULT)
agg_arg_charsets(cmp_collation, args, arg_count, MY_COLL_CMP_CONV, 1);
}
} /* namespace drizzled */
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