Administration – Deleting objects¶

Example #1 Delete an Objective Bank¶

DELETE https://mc3-demo.mit.edu/handcar/services/learning/objectivebanks/mc3-objectivebank%3A1%40MIT-OEIT

TODO: create an example in cURL or HURLit

What happens when I delete an objective bank?¶

1. Most people cannot delete an objective bank – such authority is restricted to just those who have the “DELETE LO BANK” role, a tightly controlled group.
2. If you do have rights, the attempt fails if any objectives exist in the Bank – you must delete them first
3. Any assets you may have created in the corresponding repository are not deleted
4. Leaves a Repository in existence that “corresponds” to the bank in question but at present there is no way to access any of those assets via handcar

4. Any relationships should have already been deleted since all objectives must have been deleted already

2. Leaves a family floating around that “corresponds” to the bank in question that can be viewed via the Relationship Service but should probably be left alone.

Example #1 Delete an Objective¶

DELETE https://mc3-demo.mit.edu/handcar/services/learning/objectives/

TODO: create an example in cURL or HURLit

What happens when I delete an objective?¶

1. Fails if any activities exist – you must delete them first
2. Does not check if there are any related assets in the corresponding repository so those assets do not get deleted when the activity that points to them gets deleted.
3. Does check for and deletes any relationships TO or FROM the objective that is being deleted
4. BUG: If the relationship crosses banks (i.e. points FROM an objective in a different bank TO the objective being deleted then the relationship does not get deleted – this is a known bug and will be addressed when we implement more cross-bank support.

Example #1 Delete an Activity¶

DELETE https://mc3-demo.mit.edu/handcar/services/learning/activities

TODO: create an example in cURL or HURLit

What happens when I delete an activity?¶

1. It’s links to it’s assets are automatically removed but the assets themselves are not deleted

Example #1 Delete an Asset¶

DELETE https://mc3-demo.mit.edu/handcar/services/learning/assets/

TODO: create an example in cURL or HURLit

What happens when I delete an asset?¶

1. Since the asset contents are embedded in the asset object they are are automatically deleted along with the asset
2. Activities that point to these assets have their link to that asset removed.

Example #1 Delete an Asset Content¶

Note: Our repository implementation does not actually store the contents of an asset, just a URL where it can be found on the internet.  So when we say “delete an asset content” we really mean deleting the metadata about the content of that asset.  This metadata  is stored in an OSID object.  We are not talking about deleting the actual movie or photo or website itself.

You delete an asset content by simply removing it from inside of the asset and updating the asset

PUT https://mc3-demo.mit.edu/handcar/services/learning/assets/

TODO: create an example in cURL or HURLit

What happens when I delete an asset content?¶

1. Since the asset contents are do not actually contain the physical asset but just the URL so just the contents are deleted.

What happens when I delete a Relationship?¶

1. The corresponding relationship when viewed from the learning service disappears as well.  For example if you delete a parent-child relationship via the relationship service the parent-child relationship is gone if you turn around and ask for the children of the objective via the learning service.