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drizzled/plugin/schema_engine.cc
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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/global_charset_info.h>
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#include <drizzled/charset.h>
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#include <drizzled/transaction_services.h>
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#include <drizzled/plugin/storage_engine.h>
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#include <drizzled/plugin/authorization.h>
 
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#include "config.h"
 
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#include "drizzled/session.h"
 
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#include "drizzled/global_charset_info.h"
 
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#include "drizzled/charset.h"
 
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#include "drizzled/transaction_services.h"
 
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#include "drizzled/plugin/storage_engine.h"
 
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#include "drizzled/plugin/authorization.h"
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namespace drizzled
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{
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  std::for_each(StorageEngine::getSchemaEngines().begin(), StorageEngine::getSchemaEngines().end(),
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           AddSchemaNames(schemas));
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  plugin::Authorization::pruneSchemaNames(*session.user(), schemas);
 
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  plugin::Authorization::pruneSchemaNames(session.user(), schemas);
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}
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class StorageEngineGetSchemaDefinition: public std::unary_function<StorageEngine *, bool>
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  result_type operator() (argument_type engine)
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  {
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    schema_proto= engine->doGetSchemaDefinition(identifier);
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    return schema_proto;
 
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    return engine->doGetSchemaDefinition(identifier, schema_proto);
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  }
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};
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/*
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  Return value is "if parsed"
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*/
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message::schema::shared_ptr StorageEngine::getSchemaDefinition(const drizzled::identifier::Table &identifier)
 
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bool StorageEngine::getSchemaDefinition(const drizzled::identifier::Table &identifier, message::schema::shared_ptr &proto)
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{
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  return StorageEngine::getSchemaDefinition(identifier);
 
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  return StorageEngine::getSchemaDefinition(identifier, proto);
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}
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message::schema::shared_ptr StorageEngine::getSchemaDefinition(const identifier::Schema &identifier)
 
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bool StorageEngine::getSchemaDefinition(const identifier::Schema &identifier, message::schema::shared_ptr &proto)
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{
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  message::schema::shared_ptr proto;
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  EngineVector::iterator iter=
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    std::find_if(StorageEngine::getSchemaEngines().begin(), StorageEngine::getSchemaEngines().end(),
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                 StorageEngineGetSchemaDefinition(identifier, proto));
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  if (iter != StorageEngine::getSchemaEngines().end())
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  {
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    return proto;
 
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    return true;
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  }
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  return message::schema::shared_ptr();
 
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  return false;
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}
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bool StorageEngine::doesSchemaExist(const identifier::Schema &identifier)
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{
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  message::schema::shared_ptr proto;
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  return StorageEngine::getSchemaDefinition(identifier);
 
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  return StorageEngine::getSchemaDefinition(identifier, proto);
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}
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const CHARSET_INFO *StorageEngine::getSchemaCollation(const identifier::Schema &identifier)
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{
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  message::schema::shared_ptr schmema_proto;
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  schmema_proto= StorageEngine::getSchemaDefinition(identifier);
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  if (schmema_proto && schmema_proto->has_collation())
 
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  bool found;
 
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  found= StorageEngine::getSchemaDefinition(identifier, schmema_proto);
 
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  if (found && schmema_proto->has_collation())
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  {
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    const std::string buffer= schmema_proto->collation();
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    const CHARSET_INFO* cs= get_charset_by_name(buffer.c_str());
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      std::string path;
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      identifier.getSQLPath(path);
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      errmsg_printf(error::ERROR,
 
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      errmsg_printf(ERRMSG_LVL_ERROR,
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                    _("Error while loading database options: '%s':"), path.c_str());
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      errmsg_printf(error::ERROR, ER(ER_UNKNOWN_COLLATION), buffer.c_str());
 
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      errmsg_printf(ERRMSG_LVL_ERROR, ER(ER_UNKNOWN_COLLATION), buffer.c_str());
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      return default_charset_info;
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    }
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  public std::unary_function<StorageEngine *, void>
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{
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  const drizzled::message::Schema &schema_message;
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  uint64_t &success_count;
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public:
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  CreateSchema(const drizzled::message::Schema &arg, uint64_t &success_count_arg) :
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    schema_message(arg),
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    success_count(success_count_arg)
 
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  CreateSchema(const drizzled::message::Schema &arg) :
 
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    schema_message(arg)
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  {
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  }
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    if (success) 
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    {
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      success_count++;
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      TransactionServices &transaction_services= TransactionServices::singleton();
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      transaction_services.allocateNewTransactionId();
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    }
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bool StorageEngine::createSchema(const drizzled::message::Schema &schema_message)
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{
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  // Add hook here for engines to register schema.
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  uint64_t success_count= 0;
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  std::for_each(StorageEngine::getSchemaEngines().begin(), StorageEngine::getSchemaEngines().end(),
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                CreateSchema(schema_message, success_count));
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  if (success_count) 
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  {
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    TransactionServices &transaction_services= TransactionServices::singleton();
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    transaction_services.allocateNewTransactionId();
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  }
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  return (bool)success_count;
 
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                CreateSchema(schema_message));
 
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  return true;
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}
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class DropSchema : 
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       it++)
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  {
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    boost::mutex::scoped_lock scopedLock(table::Cache::singleton().mutex());
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    message::table::shared_ptr message= StorageEngine::getTableMessage(session, *it, false);
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    if (not message)
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    {
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      my_error(ER_TABLE_DROP, *it);
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      return false;
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    }
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    table::Cache::singleton().removeTable(&session, *it,
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                                          RTFC_WAIT_OTHER_THREAD_FLAG |
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                                          RTFC_CHECK_KILLED_FLAG);
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      my_error(ER_TABLE_DROP, *it);
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      return false;
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    }
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    transaction_services.dropTable(session, *it, *message, true);
 
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    transaction_services.dropTable(&session, *it, true);
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    deleted++;
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  }
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  return true;
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}
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bool StorageEngine::dropSchema(Session::reference session,
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                               identifier::Schema::const_reference identifier,
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                               message::schema::const_reference schema_message)
 
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bool StorageEngine::dropSchema(Session::reference session, identifier::Schema::const_reference identifier)
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{
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  uint64_t deleted= 0;
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  bool error= false;
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  identifier::Table::vector dropped_tables;
 
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  message::Schema schema_proto;
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  do
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  {
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    {
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      /* We've already verified that the schema does exist, so safe to log it */
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      TransactionServices &transaction_services= TransactionServices::singleton();
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      transaction_services.dropSchema(session, identifier, schema_message);
 
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      transaction_services.dropSchema(&session, identifier);
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    }
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  } while (0);
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    if (success)
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    {
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      success_count++;
 
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      TransactionServices &transaction_services= TransactionServices::singleton();
 
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      transaction_services.allocateNewTransactionId();
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    }
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  }
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};
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  std::for_each(StorageEngine::getSchemaEngines().begin(), StorageEngine::getSchemaEngines().end(),
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                AlterSchema(schema_message, success_count));
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  if (success_count)
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  {
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    TransactionServices &transaction_services= TransactionServices::singleton();
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    transaction_services.allocateNewTransactionId();
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  }
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  return success_count ? true : false;
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}
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