querying.factory Class Reference

Public Member Functions
def	__init__ (self, connection)
def	object (self, class_name, pkargs)

Public Attributes
	connection

Detailed Description

Contains methods for creating objects.

Definition at line 295 of file querying.py.

Constructor & Destructor Documentation

def querying.factory.__init__	(		self,
			connection
	)

Definition at line 299 of file querying.py.

    def __init__(self, connection):
        self.connection = connection

Member Function Documentation

def querying.factory.object	(		self,
			class_name,
			pkargs
	)

Definition at line 305 of file querying.py.

References models.apply_filters(), and ReggeGribovPartonMC_EposLHC_2760GeV_PbPb_cfi.model.

Referenced by Vispa.Views.LineDecayView.LineDecayContainer.createObject(), Vispa.Views.LineDecayView.LineDecayContainer.delete(), Vispa.Views.LineDecayView.DecayLine.delete(), Vispa.Views.LineDecayView.LineDecayContainer.mouseReleaseEvent(), and Vispa.Views.BoxDecayView.BoxDecayContainer.toggleCollapse().

    def object(self, class_name, **pkargs):
        from .data_sources import json_list
        from .models import apply_filters
        # get the class that self.connection holds from the class name
        model = self.connection.model(class_name)

        if self.connection.session == None:
            return None

        # query for the ORM object, and return the appropriate object (None, CondDBFW object, or json_list)
        model_data = self.connection.session.query(model)
        if len(pkargs.items()) != 0:
            # apply the filters defined in **kwargs
            model_data = apply_filters(model_data, model, **pkargs)
            amount = pkargs["amount"] if "amount" in pkargs.keys() else None
            model_data = model_data.limit(amount)
            if model_data.count() > 1:
                # if we have multiple objects, return a json_list
                return json_list(model_data.all())
            elif model_data.count() == 1:
                # if we have a single object, return that object
                return model_data.first()
            else:
                # if we have no objects returned, return None
                return None
        else:
            # no column arguments were given, so return an empty object
            new_object = model()
            new_object.empty = True
            return new_object

Member Data Documentation

querying.factory.connection

Definition at line 300 of file querying.py.

Referenced by querying_tests.querying_tests.test_check_connection(), and data_formats_tests.data_formats_tests.test_dicts_to_orm_objects().