Compound Objects
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Compound Objects in django
Multi-page maps, called "compound objects" in CONTENTdm, pose a structural challenge in transitioning to a new system. In the data exported from CONTENTdm, compound object metadata is listed in separate rows: one for the object metadata, and then as many rows as necessary for the page metadata. The structure of the compound object is defined in a small XML file with the extension .cpd in CONTENTdm.
Sample Compound Object
The 1936 [State Highway Map of North Carolina] contains two sides, front and back.
| colspan="2" Object Metadata | |
|---|---|
| map_id | MC_150_1936nb |
| Repository | North Carolina State Archives |
| Title | State highway system of North Carolina |
| date_published_numeric | 1936 |
| Date Published | 1936 |
| content_date_numeric | 1936 |
| Date Depicted | 1936 |
| Creator - Individual | Sawyer, C. M. |
| Creator - Organization | North Carolina State Highway and Public Works Commission. |
| Place of Publication | Raleigh |
| Publisher | North Carolina State Highway Commission.;Edwards & Broughton |
| Caption | At lower right: "Prepared by C.M. Sawyer. Raleigh, Edwards & Broughton Co." |
| Abstract | This is the color version of the 1936 edition of the state highway map. Shows highways coded by surface type (hard surface, gravel-topsoil, earth, and unimproved). Also shows the Blue Ridge Parkway (Under Construction) , ferries, and parks and national forests. Relief shown pictorially. The back of the map has several color illustrations and photographs, including a panorama of the Blue Ridge Parkway, and scenic shots from around the state. |
| Related Maps | MC.150.1936na |
| Theme | Transportation and Communication |
| Type | Highway |
| Details | Colors;County Boundaries;Decorative Illustrations;Distances;Lakes;Legends;Parks;Photographs;Roads |
| Subject - Topical | Roads -- North Carolina -- Maps. |
| Subject - Graphic | Ships |
| Scope | United States, North Carolina |
| Places Depicted | North Carolina |
| West Longitude | -84.466667 |
| East Longitude | -75.333333 |
| North Latitude | 36.758333 |
| South Latitude | 33.688889 |
| Scale | 1:823,680 |
| Size | 39.2 x 102.6 cm. |
| Medium | Paper |
| Language | English |
| Call Number | MC.150.1936nb;MARS Id 3.3.545 |
| Filename | 763.cpd |
