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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Sun Microsystems
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <plugin/function_engine/function.h>
#include <plugin/function_engine/cursor.h>
#include <string>
using namespace std;
using namespace drizzled;
static SchemaIdentifier INFORMATION_SCHEMA_IDENTIFIER("INFORMATION_SCHEMA");
static SchemaIdentifier DATA_DICTIONARY_IDENTIFIER("DATA_DICTIONARY");
Function::Function(const std::string &name_arg) :
drizzled::plugin::StorageEngine(name_arg,
HTON_ALTER_NOT_SUPPORTED |
HTON_HAS_SCHEMA_DICTIONARY |
HTON_SKIP_STORE_LOCK |
HTON_TEMPORARY_NOT_SUPPORTED)
{
}
Cursor *Function::create(TableShare &table)
{
return new FunctionCursor(*this, table);
}
int Function::doGetTableDefinition(Session &,
const TableIdentifier &identifier,
message::Table &table_proto)
{
drizzled::plugin::TableFunction *function= getFunction(identifier.getPath());
if (not function)
{
return ENOENT;
}
function->define(table_proto);
return EEXIST;
}
void Function::doGetSchemaIdentifiers(SchemaIdentifiers& schemas)
{
schemas.push_back(INFORMATION_SCHEMA_IDENTIFIER);
schemas.push_back(DATA_DICTIONARY_IDENTIFIER);
}
bool Function::doGetSchemaDefinition(const SchemaIdentifier &schema_identifier, message::Schema &schema_message)
{
if (schema_identifier == INFORMATION_SCHEMA_IDENTIFIER)
{
schema_message.set_name("information_schema");
schema_message.set_collation("utf8_general_ci");
}
else if (schema_identifier == DATA_DICTIONARY_IDENTIFIER)
{
schema_message.set_name("data_dictionary");
schema_message.set_collation("utf8_general_ci");
}
else
{
return false;
}
return true;
}
bool Function::doCanCreateTable(const drizzled::TableIdentifier &table_identifier)
{
if (static_cast<const SchemaIdentifier&>(table_identifier) == INFORMATION_SCHEMA_IDENTIFIER)
{
return false;
}
else if (static_cast<const SchemaIdentifier&>(table_identifier) == DATA_DICTIONARY_IDENTIFIER)
{
return false;
}
return true;
}
bool Function::doDoesTableExist(Session&, const TableIdentifier &identifier)
{
drizzled::plugin::TableFunction *function= getFunction(identifier.getPath());
if (function)
return true;
return false;
}
void Function::doGetTableIdentifiers(drizzled::CachedDirectory&,
const drizzled::SchemaIdentifier &schema_identifier,
drizzled::TableIdentifiers &set_of_identifiers)
{
set<string> set_of_names;
drizzled::plugin::TableFunction::getNames(schema_identifier.getSchemaName(), set_of_names);
for (set<string>::iterator iter= set_of_names.begin(); iter != set_of_names.end(); iter++)
{
set_of_identifiers.push_back(TableIdentifier(schema_identifier, *iter, drizzled::message::Table::FUNCTION));
}
}
static int init(drizzled::module::Context &context)
{
context.add(new Function("FunctionEngine"));
return 0;
}
DRIZZLE_DECLARE_PLUGIN
{
DRIZZLE_VERSION_ID,
"FunctionEngine",
"1.0",
"Brian Aker",
"Function Engine provides the infrastructure for Table Functions,etc.",
PLUGIN_LICENSE_GPL,
init, /* Plugin Init */
NULL, /* system variables */
NULL /* config options */
}
DRIZZLE_DECLARE_PLUGIN_END;
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