this.olapMetaExplorer = new OlapMetaExplorer(connectionManager);
this.datasourceService = new DatasourceService();
this.datasourceService.setConnectionManager(connectionManager);
this.olapDiscoverService = new OlapDiscoverService();
this.olapDiscoverService.setDatasourceService(datasourceService);
this.thinQueryService = new ThinQueryService();
thinQueryService.setOlapDiscoverService(olapDiscoverService);
}