Discovery Center provides the ability to define Extraction Rules for file property retrieval as part of a skim index using a pre-defined set of SharePoint repository properties. Details on how to configure these rules are included in the Discovery Center help pages and User Guide document.
It is also possible to retrieve other file level properties for content within SharePoint as part of a skim index, with the use of Extraction Rules defined for custom repository properties. To create a rule for one of these custom properties an Extraction Rule should be created of type 'Repository Property', with the property type 'SharePoint Property', and the 'Enter custom property name' option should be checked to allow for a 'Custom Property Name' to be defined.
When entering details for access to a custom SharePoint column you should use the internal name of the column which is not always the same as the displayed name. To check the internal name you should edit the column within the SharePoint web UI and check the name used in the Field argument of the URL.
The following built-in columns are used to populate basic metadata in the Discovery Center database and hence these are not made available for extraction as repository properties.
| SharePoint Display Name | SharePoint Internal Name(s) |
|---|---|
| Created By | Author |
| Created | Created/Created_x0020_Date |
| Modified | Modified/Last_x0020_Modified |
Additionally the following built-in columns are not extracted:
| SharePoint Internal Name | Notes |
|---|---|
| CheckedOutUserId | provides internal ID, not a user name |
| Combine | field with file information |
| FileDirRef | available via file path regular expressions |
| IsCheckedoutToLocal | Can be inferred from value of CheckoutUser |
| _IsCurrentVersion | AN analysis always works with most recent version |
| RepairDocument | link for repairing document object |
| ScopeId | internal value representing list permissions |
| SelectFilename | available via file path regular expressions |
| SelectTitle | available via vti_title |
| ServerUrl | available via file path regular expressions |
| _UIVersion | version can be accessed with _UIVersionString |
| WorkflowVersion | applies to workflow task objects rather than documents |