ifc_resource/inventory/
items.rs

1//! `IfcRelAssignsToGroup` membership for `IfcInventory`.
2
3use ifc_model::EntityId;
4
5use crate::error::ResourceResult;
6use crate::view::ResourceView;
7
8impl<'m, 's> ResourceView<'m, 's> {
9    /// Members of an `IfcInventory` group, authored order, via
10    /// `IfcRelAssignsToGroup.RelatingGroup`.
11    ///
12    /// `IfcGroup.IsGroupedBy` is `SET [0:?]`: an inventory may be named by
13    /// several assignment relations. Members from every authored relation
14    /// are concatenated in relation-then-list order; duplicates across
15    /// relations are preserved verbatim rather than deduplicated, since the
16    /// schema does not require assignment relations to be disjoint.
17    pub fn inventory_items(&self, inventory: EntityId) -> ResourceResult<Vec<EntityId>> {
18        self.inventory(inventory)?;
19        let mut items = Vec::new();
20        for relation in self.ids_of_ancestor("IfcRelAssignsToGroup") {
21            let record = self.record(relation, "IfcRelAssignsToGroup")?;
22            let relating_group = record.required_ref("RelatingGroup", "IfcGroup")?;
23            if relating_group != inventory {
24                continue;
25            }
26            items.extend(record.refs("RelatedObjects", "IfcObjectDefinition", 1, false, false)?);
27        }
28        Ok(items)
29    }
30}
ifc_resource/inventory/items.rs

ifc_resource/inventory/
items.rs
