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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2000 MySQL AB
* Copyright (C) 2008, 2009 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
*/
/* This implements 'user defined functions' */
#include "config.h"
#include <drizzled/gettext.h>
#include "drizzled/hash.h"
#include "drizzled/plugin/function.h"
using namespace std;
namespace drizzled
{
typedef hash_map<string, const plugin::Function *> UdfMap;
static UdfMap udf_registry;
bool plugin::Function::addPlugin(const plugin::Function *udf)
{
string lower_name(udf->getName());
transform(lower_name.begin(), lower_name.end(),
lower_name.begin(), ::tolower);
if (udf_registry.find(lower_name) != udf_registry.end())
{
errmsg_printf(ERRMSG_LVL_ERROR,
_("A function named %s already exists!\n"),
udf->getName().c_str());
return true;
}
pair<UdfMap::iterator, bool> ret=
udf_registry.insert(make_pair(lower_name, udf));
if (ret.second == false)
{
errmsg_printf(ERRMSG_LVL_ERROR,
_("Could not add Function!\n"));
return true;
}
return false;
}
void plugin::Function::removePlugin(const plugin::Function *udf)
{
string lower_name(udf->getName());
transform(lower_name.begin(), lower_name.end(),
lower_name.begin(), ::tolower);
udf_registry.erase(lower_name);
}
const plugin::Function *plugin::Function::get(const char *name, size_t length)
{
string lower_name(name, length);
transform(lower_name.begin(), lower_name.end(),
lower_name.begin(), ::tolower);
UdfMap::iterator iter= udf_registry.find(lower_name);
if (iter == udf_registry.end())
{
return NULL;
}
return (*iter).second;
}
} /* namespace drizzled */
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