python - MongoEngine Query Optimization -


i have 2 collections scenariodrivers , modeldrivers has 1 many relationship each other.

class scenariodrivers(document):     meta = {         'collection': 'scenariodrivers'     }     scenarioid = referencefield('modelscenarios')     driverid = referencefield('modeldrivers')     drivercalibrationmethod = stringfield()     segmentname = stringfield()     drivervalue = listfield()     calibrationstatus = stringfield()     adjustedvalues = listfield(default=[])     createdate = datetimefield(default=objectid().generation_time)     lastupdatedate = datetimefield(default=datetime.utcnow())  class modeldrivers(document):     meta = {         'collection': 'modeldrivers'     }     portfoliomodelid = referencefield('portfoliomodels')     drivername = stringfield()     createdate = datetimefield(default=objectid().generation_time)     lastupdatedate = datetimefield(default=datetime.utcnow())     fieldformat = stringfield()     driverdata = listfield()

my query this.

class getcalibrateddrivers(resource):     def get(self, scenario_id):         scenario_drivers_list = []          scenario_drivers = scenariodrivers.objects(scenarioid=scenario_id).exclude('scenarioid').select_related(1)         scenario_driver in scenario_drivers:             scenario_driver_dict = {                 'id': str(scenario_driver.id),                 'driverid': str(scenario_driver.driverid.id),                 'segmentname': scenario_driver.segmentname,                 'calibrationmethod': scenario_driver.drivercalibrationmethod,                 'calibratedvalues': exchange(scenario_driver.drivervalue),                 'adjustedvalues': scenario_driver.adjustedvalues,                 'lastupdatedate': formatted_date(scenario_driver.lastupdatedate),                 'fieldformat': scenario_driver.driverid.fieldformat             }             scenario_drivers_list.append(scenario_driver_dict)          return {             'drivercalibrations': scenario_drivers_list         }

the query matches 1140 records , construct dictionary , make list.

but api call takes 30s process 1140 records. missing? please help. using latest version of pymongo , mongoengine.

i think problem not query, looping on 1140 records. not see use of referenced objects should consider removing select_related(1). once that, if want convert reference object ids string, can use as_pymongo() default you. , if must read data in specific format formatted_date or exchange, better save them part of document. i.e. save formattedlastupdatedate lastupdatedate. in mongodb, have think read specific logic when save document.


-

Comments

Post a Comment

Popular posts from this blog

c# - Binding a comma separated list to a List<int> in asp.net web api -

the default binder in web api expecst http://url.com/webapi/report/?pageids=3243&pageids=2365 to bind public ihttpactionresult report(list<int> pageids){ // exciting webapi code} i wish bind http://url.com/webapi/report/?pageids=3243,2365 as running out of space in url get . i have created class public class commaseparatedmodelbinder : system.web.http.modelbinding.imodelbinder { public bool bindmodel(httpactioncontext actioncontext, modelbindingcontext bindingcontext) { //binding in here } } and registered in webapiconfig.cs var provider = new simplemodelbinderprovider( typeof(list<int>), new commaseparatedmodelbinder()); config.services.insert(typeof(modelbinderprovider), 0, provider); i have altered method signature use model binder so public ihttpactionresult report( [modelbinder] list<int> pageids){ // exciting webapi code} however break point in binder not being ...
Read more

how to prompt save As Box in Excel Interlop c# MVC 4 -

i want export excel sheet using excel interloop... i have datatable convert excel sheet... now there way save file using save dialogue box in mvc 4 here code public string datatabletoexcel(datatable dt, string htmlheading, string key) { try { microsoft.office.interop.excel.application excel; microsoft.office.interop.excel.workbook excelworkbook; microsoft.office.interop.excel.worksheet excelsheet; microsoft.office.interop.excel.range excelcellrange; excel = new microsoft.office.interop.excel.application(); excel.visible = false; excel.displayalerts = false; excelworkbook = excel.workbooks.add(type.missing); excelsheet = (microsoft.office.interop.excel.worksheet)excelworkbook.activesheet; excelsheet.name = "sheet1"; dataset ...
Read more

xslt 1.0 - How to access or retrieve mets content of an item from another item? -

my use case have item has link in item. example, item 123456789/152 has metadata field dc.relation.hasversion=123456789/717 . within item view of 123456789/152 , how can retrieve values of metadata of 123456789/717 ? example, want retrieve dc.language.iso value of 123456789/717 123456789/152 . i looked @ related items feature in dspace don't know how metadata displayed in related items list pulled items in list. i using dspace version 5.3 mirage 2 theme . edit based on schweerelos answer, below actual code. using custom metadata field dc.relation.languageversion . basically, want link other version instead of displaying value, display dc.language.iso of other version in item-view.xsl . i've incorporated answer of schweerelos question in code just displaying value of dc.relation.languageversion . sample values of dc.relation.languageversion 10665.1/9843 ; 10665.1/9844 ie not complete uri handle. thanks in advance! actual code <xsl:template name=...
Read more