~drizzle-trunk/drizzle/development

/* - 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/schema_dictionary/dictionary.h"

using namespace std;

using namespace drizzled;

SchemasTool::SchemasTool() :

  plugin::TableFunction("DATA_DICTIONARY", "SCHEMAS")

{

  add_field("SCHEMA_NAME");

  add_field("DEFAULT_COLLATION_NAME");

  add_field("SCHEMA_CREATION_TIME");

  add_field("SCHEMA_UPDATE_TIME");

}

SchemasTool::Generator::Generator(Field **arg) :

  plugin::TableFunction::Generator(arg),

  is_schema_primed(false),

  is_schema_parsed(false)

{

}

bool SchemasTool::Generator::nextSchemaCore()

{

  if (is_schema_primed)

  {

    schema_iterator++;

  }

  else

  {

    plugin::StorageEngine::getSchemaIdentifiers(getSession(), schema_names);

    schema_names.sort();

    schema_iterator= schema_names.begin();

    is_schema_primed= true;

  }

  if (schema_iterator == schema_names.end())

    return false;

  schema.Clear();

  SchemaIdentifier schema_identifier(*schema_iterator);

  is_schema_parsed= plugin::StorageEngine::getSchemaDefinition(schema_identifier, schema);

  if (not is_schema_parsed)

  {

    return false;

  }

  return true;

}

bool SchemasTool::Generator::nextSchema()

{

  while (not nextSchemaCore())

  {

    if (schema_iterator == schema_names.end())

      return false;

  }

  return true;

}

bool SchemasTool::Generator::populate()

{

  if (nextSchema())

  {

    fill();

    return true;

  }

  return false;

}

/**

  A lack of a parsed schema file means we are using defaults.

*/

void SchemasTool::Generator::fill()

{

  /* SCHEMA_NAME */

  push(schema.name());

  /* DEFAULT_COLLATION_NAME */

  if (is_schema_parsed)

    push(schema.collation());

  else

    push(scs->name);

  /* SCHEMA_CREATION_TIME */

  time_t time_arg= schema.creation_timestamp();

  char buffer[40];

  struct tm tm_buffer;

  localtime_r(&time_arg, &tm_buffer);

  strftime(buffer, sizeof(buffer), "%a %b %d %H:%M:%S %Y", &tm_buffer);

  push(buffer);

  /* SCHEMA_UPDATE_TIME */

  time_arg= schema.update_timestamp();

  localtime_r(&time_arg, &tm_buffer);

  strftime(buffer, sizeof(buffer), "%a %b %d %H:%M:%S %Y", &tm_buffer);

  push(buffer);

}