C++ (Cpp) QgsDataSourceUri::hasParam示例

QString QgsOracleConn::toPoolName( const QgsDataSourceUri &uri )
{
  QString conninfo = uri.connectionInfo();
  if ( uri.hasParam( "dbworkspace" ) )
    conninfo += " dbworkspace=" + uri.param( "dbworkspace" );
  return conninfo;
}

示例#2

显示文件

文件： qgsoracleconn.cpp 项目： wongjimsan/QGIS

QgsOracleConn::QgsOracleConn( QgsDataSourceUri uri )
    : mRef( 1 )
    , mCurrentUser( QString::null )
    , mHasSpatial( -1 )
{
  QgsDebugMsg( QString( "New Oracle connection for " ) + uri.connectionInfo() );

  QString database = databaseName( uri.database(), uri.host(), uri.port() );
  QgsDebugMsg( QString( "New Oracle database " ) + database );

  mDatabase = QSqlDatabase::addDatabase( "QOCISPATIAL", QString( "oracle%1" ).arg( snConnections++ ) );
  mDatabase.setDatabaseName( database );
  QString options = uri.hasParam( "dboptions" ) ? uri.param( "dboptions" ) : "OCI_ATTR_PREFETCH_ROWS=1000";
  QString workspace = uri.hasParam( "dbworkspace" ) ? uri.param( "dbworkspace" ) : QString::null;
  mDatabase.setConnectOptions( options );
  mDatabase.setUserName( uri.username() );
  mDatabase.setPassword( uri.password() );

  QgsDebugMsg( QString( "Connecting with options: " ) + options );

  if ( !mDatabase.open() )
  {
    QString username = uri.username();
    QString password = uri.password();

    QString realm( database );
    if ( !username.isEmpty() )
      realm.prepend( username + "@" );

    QgsCredentials::instance()->lock();

    while ( !mDatabase.open() )
    {
      bool ok = QgsCredentials::instance()->get( realm, username, password, mDatabase.lastError().text() );
      if ( !ok )
        break;

      if ( !username.isEmpty() )
      {
        uri.setUsername( username );
        realm = username + "@" + database;
      }

      if ( !password.isEmpty() )
        uri.setPassword( password );

      QgsDebugMsg( "Connecting to " + database );
      mDatabase.setUserName( username );
      mDatabase.setPassword( password );
    }

    if ( mDatabase.isOpen() )
      QgsCredentials::instance()->put( realm, username, password );

    QgsCredentials::instance()->unlock();
  }

  if ( !mDatabase.isOpen() )
  {
    mDatabase.close();
    QgsMessageLog::logMessage( tr( "Connection to database failed" ), tr( "Oracle" ) );
    mRef = 0;
    return;
  }

  if ( !workspace.isNull() )
  {
    QSqlQuery qry( mDatabase );

    if ( !qry.exec( QString( "BEGIN\nDBMS_WM.GotoWorkspace(%1);\nEND;" ).arg( quotedValue( workspace ) ) ) )
    {
      mDatabase.close();
      QgsMessageLog::logMessage( tr( "Could not switch to workspace %1 [%2]" ).arg( workspace, qry.lastError().databaseText() ), tr( "Oracle" ) );
      mRef = 0;
      return;
    }
  }
}