OpenSite/Concepts/Documents and identity
Use the right identity for the operation you are performing.
Four identities
| Value | Purpose | Lifetime |
|---|---|---|
| Persistent document ID | Identifies saved model content | Survives save/reopen |
| Session handle | Addresses an open document instance | Valid only for that live session |
| Object ID | Identifies an object inside a document | Retained by document persistence |
| Name and label | Unique lookup name and human-readable display label | Different from the object ID |
Read identity explicitly
import opensite
doc = opensite.execute("document.new", {})["document"]
created = opensite.material_create_user(doc, {
"name": "Practice steel", "family": "steel", "role": "structural_steel",
"has_elastic": True, "elastic_pa": 210.0e9,
"has_poisson": True, "poisson": 0.28,
"has_mass_density": True, "mass_density": 7850.0,
"has_thermal": True, "thermal_per_k": 1.2e-5,
})
item = doc.get_object(created["id"])
print("Persistent document:", doc.identity())
print("Session handle:", doc.session)
print("Object ID:", item.id)
print("Internal name:", item.name)
print("Display label:", item.label)
assert doc.get_object(item.name).id == item.id
opensite.material_renumber(doc, item.id, 12)
assert doc.get_object(item.id).id == item.idTransactions and files
An accepted edit publishes a consistent revision. Undo/redo are session history. Saving writes document data, not the undo stack. Reopening returns a new live handle; do not keep using a closed one.
