Method removeEntity

src/ifcparse/IfcParse.cpp:2143–2172

}

void IfcFile::removeEntity(IfcUtil::IfcBaseClass* entity) {
    const unsigned id = entity->id();

    IfcUtil::IfcBaseClass* file_entity = instance_by_id(id);

    // Attention when running removeEntity inside a loop over a list of entities to be removed.
    // This invalidates the iterator. A workaround is to reverse the loop:
    // boost::shared_ptr<aggregate_of_instance> entities = ...;
    // for (auto it = entities->end() - 1; it >= entities->begin(); --it) {
    //    IfcUtil::IfcBaseClass *const inst = *it;
    //    model->removeEntity(inst);
    // }

    // TODO: Create a set of weak relations. Inverse relations that do not dictate an
    // instance to be retained. For example: when deleting an IfcRepresentation, the
    // individual IfcRepresentationItems can not be deleted if an IfcStyledItem is
    // related. Hence, the IfcRepresentationItem::StyledByItem relation could be
    // characterized as weak.
    // std::set<IfcSchema::Type::Enum> weak_roots;

    if (entity != file_entity) {
        throw IfcParse::IfcException("Instance not part of this file");
    }

    if (batch_mode_) {
        batch_deletion_ids_.push_back(id);
    } else {
        process_deletion_(entity);
    }
}

void IfcFile::process_deletion_(IfcUtil::IfcBaseClass* entity) {