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  • Committer: Brian Aker
  • Date: 2010-03-15 21:50:05 UTC
  • mto: This revision was merged to the branch mainline in revision 1343.
  • Revision ID: brian@gaz-20100315215005-oqoblpbll9n0albj
Merge of table cache/def DD.

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plugin/database_function/database_function.cc
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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, Inc.
 
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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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#include "config.h"
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#include <drizzled/session.h>
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#include "plugin/utility_functions/functions.h"
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namespace drizzled
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{
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namespace utility_functions
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{
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String *Schema::val_str(String *str)
 
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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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  util::string::const_shared_ptr schema= getSession().schema();
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  if (not schema or schema->empty())
 
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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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  str->copy(*schema, system_charset_info);
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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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} /* namespace utility_functions */
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} /* namespace drizzled */
 
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plugin::Create_function<DatabaseFunction> *database_function= NULL;
 
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static int initialize(drizzled::plugin::Registry &registry)
 
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{
 
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  database_function= new plugin::Create_function<DatabaseFunction>("database");
 
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  registry.add(database_function);
 
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  return 0;
 
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}
 
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static int finalize(drizzled::plugin::Registry &registry)
 
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{
 
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   registry.remove(database_function);
 
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   delete database_function;
 
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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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  finalize,   /* Plugin Deinit */
 
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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;