Feature request: File attachments

[markborkum]

Is your feature request related to a problem? Please describe.

Some building assessment standards require applicants to attach data files to their submissions. For example, the Integrated Physical Needs Assessment template requires applicants to attach photographs of premises, plants, and systems.

Describe the solution you'd like

A mechanism to describe an arbitrary number of file attachments for premises, plants, and systems.

The description for a file attachment should include:

• The file name and description;
• The file MIME type;
• The file size and checksum; and
• The file URL and/or encoded blob data.

For example, in the <auc:Building> element:

<auc:Building ID="Building-1">
  <!-- ... -->
  <auc:Files>
    <auc:File ID="File-1">
      <auc:FileName>north.png</auc:FileName>
      <auc:FileDescription>View of north face of building</auc:FileDescription>
      <auc:FileContentType>image/png</auc:FileContentType>
      <auc:FileSize>1024</auc:FileSize>
      <auc:FileSHA1Checksum>2fd4e1c67a2d28fced849ee1bb76e7391b93eb12</auc:FileSHA1Checksum>
      <auc:FileURL>https://www.example.com/buildings/1/north.png</auc:FileURL>
    </auc:File>
  </auc:Files>
  <!-- ... -->
</auc:Building>

Describe alternatives you've considered

Internal to the BuildingSync XML document, file attachments can be associated with premises, plants, and systems using user-defined fields.

External to the BuildingSync XML document, file attachments can be associated with arbitrary BuildingSync XML elements using their "ID" attributes.

Additional context

No additional context.