Techniques for generating and retrieving change summary data and aggregated model version data for an infrastructure model

A method, comprising:

• receiving from a repository a first briefcase representing a first version of an infrastructure model representing a real-world entity;
• receiving one or more changesets from the repository, wherein each changeset includes information associated with one or more changes made to the first briefcase;
• constructing, by a processor, a second briefcase representing a second version of the infrastructure model, wherein the first version of the infrastructure model and the second version of the infrastructure model are different;
• comparing, by the processor, the first briefcase and the second briefcase to determine one or more modifications between the first version and the second version of the infrastructure model;
• generating, by the processor, a change summary that stores information indicating the one or more modifications made to the infrastructure model between the first version and the second version of the infrastructure model that represents the real-world entity;
• and
• generating, utilizing the change summary, aggregated model version data that includes a plurality of aggregate model entries,
• wherein a particular aggregate model entry is generated (1) for each inserted model element that is inserted in the second version of the infrastructure model indicated in the change summary, and (2) for each updated model element that is updated in the second version of the infrastructure model and indicated in the change summary,
• wherein a previous entry, for a deleted element deleted from the second version of the infrastructure model and indicated in the change summary, is maintained in the aggregated model version data.

A non-transitory computer readable medium having software encoded thereon, the software when executed by one or more computing devices operable to:

• receive from a repository a first briefcase representing a first version of an infrastructure model that represents a real-world entity;
• receive one or more changesets from the repository, wherein each changeset includes information associated with one or more changes made to the first briefcase;
• construct a second briefcase representing a second version of the infrastructure model, wherein the first version of the infrastructure model and the second version of the infrastructure model are different;
• compare the first briefcase and the second briefcase to determine one or more modifications between the first version and the second version of the infrastructure model;
• generate a change summary that stores information indicating the one or more modifications made to the infrastructure model between the first version and the second version of the infrastructure model that represents the real-world entity;
• and
• generate, utilizing the change summary, aggregated model version data that includes a plurality of aggregate model entries,
• wherein a particular aggregate model entry is generated (1) for each inserted model element that is inserted in the second version of the infrastructure model and indicated in the change summary, and (2) for each updated model element that is updated in the second version of the infrastructure model and indicated in the change summary,
• wherein a previous entry, for a deleted element deleted from the second version of the infrastructure model and indicated in the change summary, is maintained in the aggregated model version data.