palantir-core-workflow-b

# Palantir Core Workflow B — Ontology Objects & Actions ## Overview Query, filter, and mutate Ontology objects using the Foundry Platform SDK and OSDK. Covers listing objects with property filters, following links between object types, applying actions, and aggregating object data. This is the primary workflow for Ontology-driven applications. ## Prerequisites - Completed `palantir-install-auth` setup - An Ontology with configured object types, link types, and actions - Familiarity with `palantir-core-workflow-a` (data pipelines feed the Ontology) ## Instructions ### Step 1: List and Filter Objects (REST API) ```python import os, foundry client = foundry.FoundryClient( auth=foundry.UserTokenAuth( hostname=os.environ["FOUNDRY_HOSTNAME"], token=os.environ["FOUNDRY_TOKEN"], ), hostname=os.environ["FOUNDRY_HOSTNAME"], ) ONTOLOGY = "my-company" # List employees in Engineering, sorted by hire date result = client.ontologies.OntologyObject.list( ontology=ONTOLOGY, object_type="Employee", page_size=20, order_by="hireDate:asc", properties={"department": "Engineering"}, ) for obj in result.data: p = obj.properties print(f"{p['fullName']} | {p['department']} | hired {p['hireDate']}") ``` ### Step 2: Search Objects with Filters ```python # Search with complex filters using the search endpoint search_result = client.ontologies.OntologyObject.search( ontology=ONTOLOGY, object_type="Employee", where={ "type...