Generic Querying¶
Generic querying is an experimental part of pygen
. This is a method that support a broad set of querying capababilites to an arbitrary Data Model.
The generic querying takes care of pagination, implementation details in querying, unpacking the results and so on. Will will demonstrate this capabilitiy wiht the CogniteCore
model
from cognite.client import ClientConfig, CogniteClient
client = CogniteClient(ClientConfig("myName", "myProject", None))
Setting up method¶
from pprint import pprint
from cognite.client import data_modeling as dm
from cognite.pygen import _QueryExecutor
executor = _QueryExecutor(client)
Listing Properties¶
equipment = dm.ViewId("cdf_cdm", "CogniteEquipment", "v1")
result = executor.execute_query(
equipment, "list", ["name", "externalId"], sort=dm.InstanceSort(equipment.as_property_ref("name")), limit=3
)
pprint(result)
{'listCogniteEquipment': [{'externalId': 'WMT:23-AE-92527-S1', 'name': '23-AE-92527-S1'}, {'externalId': 'WMT:23-AE-92527-S2', 'name': '23-AE-92527-S2'}, {'externalId': 'WMT:23-AE-92527-S3', 'name': '23-AE-92527-S3'}]}
Listing Properties with (reverse) Direct Relation¶
result = executor.execute_query(
equipment, "list", ["externalId", {"activities": ["name", "startTime", "endTime", "externalId"]}], limit=1
)
pprint(result)
{'listCogniteEquipment': [{'activities': [{'externalId': '5267267184983944', 'name': 'El. *** motor ***/***.'}, {'externalId': '7542532148080032', 'name': 'DETALJERT INSPEKSJON AV EX ' 'UTSTYR'}, {'externalId': '3890816994380859', 'name': 'El. *** motor ***/***.'}, {'externalId': '1994654812359021', 'name': 'DETALJERT INSPEKSJON AV EX ' 'UTSTYR'}, {'externalId': '8975897325791316', 'name': '***-årlig visuell ' 'inspeksjon'}, {'externalId': '5396038908663652', 'name': ''}, {'externalId': '5591901218775805', 'name': 'Årlig sampling assessment'}, {'externalId': '6525225262427728', 'name': '36MND Elektro DETALJERT ' 'INSPEKSJON AV EX UTSTYR'}, {'externalId': '1471919969115313', 'name': 'DETALJERT INSPEKSJON AV EX ' 'UTSTYR'}, {'externalId': '6341564007115449', 'name': '*** MND ELEKTRO. Ettersyn ' 'av ***'}, {'externalId': '3752022002179906', 'name': '36MND Elektro DETALJERT ' 'INSPEKSJON AV EX UTSTYR'}, {'externalId': '7379838526502732', 'name': 'DETALJERT INSPEKSJON AV EX ' 'UTSTYR'}, {'externalId': '2600036343829439', 'name': '*** MND ELEKTRO. Ettersyn ' 'av ***'}, {'externalId': '153779822441762', 'name': ''}, {'externalId': '5311399525096904', 'name': 'Årlig sampling assessment'}, {'externalId': '1483812283636412', 'name': '***-årlig visuell ' 'inspeksjon'}, {'externalId': '4805561663219723', 'name': 'Årlig sampling assessment'}, {'externalId': '8884006857902169', 'name': 'Årlig sampling ' 'assessment'}], 'externalId': 'WMT:23-VA-9110-M01'}]}
result = executor.execute_query(equipment, "list", ["externalId", {"asset": ["externalId", "name"]}], limit=5)
pprint(result)
{'listCogniteEquipment': [{'externalId': 'WMT:23-VA-9110-M01'}, {'externalId': 'WMT:23-FC-92542'}, {'externalId': 'WMT:60-EN-9010B+27G2'}, {'asset': [{'externalId': 'WMT:23-1ST STAGE COMP DRY ' 'GAS SEAL SYS-PH', 'name': '23-1ST STAGE COMP DRY GAS SEAL ' 'SYS-PH'}], 'externalId': 'WMT:23-PSV-96173'}, {'externalId': 'WMT:23-FO-96195'}]}
Listing wiht Edges¶
Note that there are no edges connected to any of the core model views. However, if the asset
property of equipment was an edge
the above query would look like
result = executor.execute_query(
equipment, "list", ["externalId", {"asset": ["type", {"node": ["externalId", "name"]}]}], limit=5
)
The above query would return the externalID
and name
of each asset, in addition to the type
of the edge connecting the equipment and the asset.
Aggregations¶
Numeric Aggregation¶
result = executor.execute_query(equipment, "aggregate", aggregates=dm.aggregations.Count("externalId"))
pprint(result)
{'aggregateCogniteEquipment': {'count': {'externalId': 1094}}}
Group by¶
result = executor.execute_query(
equipment, "aggregate", aggregates=dm.aggregations.Count("externalId"), group_by="manufacturer"
)
pprint(result)
{'aggregateCogniteEquipment': [{'count': {'externalId': 1041}, 'group': {'manufacturer': '1686'}}, {'count': {'externalId': 31}, 'group': {'manufacturer': ''}}, {'count': {'externalId': 11}, 'group': {'manufacturer': '1350'}}, {'count': {'externalId': 9}, 'group': {'manufacturer': '1327'}}, {'count': {'externalId': 1}, 'group': {'manufacturer': '1041'}}, {'count': {'externalId': 1}, 'group': {'manufacturer': '1314'}}]}
Histogram¶
There are no number properties in the CogniteCore
model with the excpetion of Annotations and 3D. If CogniteActivity
has the integere activityCount
,
the histogram aggregatoin would look like this
activity = dm.ViewId("cdf_cdm", "CogniteActivity", "v1")
result = executor.execute_query(
activity, "aggregate", aggregates=dm.aggregations.Histogram("activityCount", interval=10)
)
Search¶
result = executor.execute_query(equipment, "search", query="23", limit=5)
pprint(result)
{'searchCogniteEquipment': [{'createdTime': 1730210932388, 'description': 'ACCUMULATOR FOR 23-FV-92543', 'externalId': 'WMT:23-FVX-92543', 'files': [], 'instanceType': 'node', 'lastUpdatedTime': 1730210932388, 'manufacturer': '', 'name': '23-FVX-92543', 'serialNumber': '1000000000042272', 'sourceId': '743717', 'sourceUpdatedUser': '8137', 'space': 'springfield_instances', 'version': 1}, {'createdTime': 1730210934298, 'description': 'DRAIN POT FOR 23-PDT-96167', 'externalId': 'WMT:23-TX-96167', 'files': [], 'instanceType': 'node', 'lastUpdatedTime': 1730210934298, 'manufacturer': '', 'name': '23-TX-96167', 'serialNumber': '1000000000033347', 'sourceId': '741832', 'sourceUpdatedUser': '8137', 'space': 'springfield_instances', 'version': 1}, {'createdTime': 1730210931078, 'description': 'VRD - 1ST STAGE COMPRESSOR OIL ' 'SEPARATOR W/ FAN', 'externalId': 'WMT:23-VA-9110-M01', 'files': [], 'instanceType': 'node', 'lastUpdatedTime': 1730210931078, 'manufacturer': '1686', 'name': '23-VA-9110-M01', 'serialNumber': '1000000000716787', 'sourceId': '346857', 'sourceUpdatedUser': '1001', 'space': 'springfield_instances', 'version': 1}, {'createdTime': 1730210931078, 'description': 'SOFT TAG VRD - PH 1STSTGCOMP HOT ' 'GAS BP', 'externalId': 'WMT:23-FC-92542', 'files': [], 'instanceType': 'node', 'lastUpdatedTime': 1730210931078, 'manufacturer': '1686', 'name': '23-FC-92542', 'serialNumber': '1000000000250724', 'sourceId': '682941', 'sourceUpdatedUser': '1001', 'space': 'springfield_instances', 'version': 1}, {'createdTime': 1730210931078, 'description': 'VRD - PH 1STSTG LUBE OIL COOLER', 'externalId': 'WMT:23-FO-96195', 'files': [], 'instanceType': 'node', 'lastUpdatedTime': 1730210931078, 'manufacturer': '1686', 'name': '23-FO-96195', 'serialNumber': '1000000000707047', 'sourceId': '345798', 'sourceUpdatedUser': '9802', 'space': 'springfield_instances', 'version': 1}]}