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1300.4.1
by Stewart Smith
move DATABASE() to function plugin. modify parser so that it looks for a function named 'database' when DATABASE() is called. Special case still needed in parser due to hilarity of not-really-reserved words. |
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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* Copyright (C) 2008 Sun Microsystems
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* Copyright (C) 2010 Stewart Smith
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h" |
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#include <drizzled/session.h> |
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#include <drizzled/function/str/strfunc.h> |
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using namespace drizzled; |
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class DatabaseFunction :public Item_str_func |
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{
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public: |
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DatabaseFunction() :Item_str_func() {} |
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String *val_str(String *); |
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void fix_length_and_dec() |
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{
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max_length= MAX_FIELD_NAME * system_charset_info->mbmaxlen; |
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maybe_null=1; |
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}
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const char *func_name() const { return "database"; } |
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const char *fully_qualified_func_name() const { return "database()"; } |
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};
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String *DatabaseFunction::val_str(String *str) |
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{
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assert(fixed == 1); |
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Session *session= current_session; |
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if (session->db.empty()) |
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{
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null_value= 1; |
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return 0; |
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}
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else
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str->copy(session->db.c_str(), session->db.length(), system_charset_info); |
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return str; |
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}
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plugin::Create_function<DatabaseFunction> *database_function= NULL; |
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1530.2.6
by Monty Taylor
Moved plugin::Context to module::Context. |
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static int initialize(drizzled::module::Context &context) |
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1300.4.1
by Stewart Smith
move DATABASE() to function plugin. modify parser so that it looks for a function named 'database' when DATABASE() is called. Special case still needed in parser due to hilarity of not-really-reserved words. |
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{
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database_function= new plugin::Create_function<DatabaseFunction>("database"); |
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1324.2.2
by Monty Taylor
Use the plugin::Context everywhere. |
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context.add(database_function); |
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1300.4.1
by Stewart Smith
move DATABASE() to function plugin. modify parser so that it looks for a function named 'database' when DATABASE() is called. Special case still needed in parser due to hilarity of not-really-reserved words. |
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return 0; |
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}
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DRIZZLE_DECLARE_PLUGIN
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{
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DRIZZLE_VERSION_ID, |
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"database_function", |
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"1.0", |
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"Stewart Smith", |
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"returns the current database", |
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PLUGIN_LICENSE_GPL, |
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initialize, /* Plugin Init */ |
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NULL, /* system variables */ |
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NULL /* config options */ |
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}
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DRIZZLE_DECLARE_PLUGIN_END; |