Update 10Jul2015: After 5 years, the macro discussed in this blog post is now very dated. If you still have SAS 9.1.3 then it should be ok, but for newer versions of SAS software (such as 9.2, 9.3 and 9.4) there are better options provided as standard by SAS Institute:
1) SAS Platform Object Framework MakeFolder Metadata Utility: see my later blog post
2) SAS 9.4 has the Make Folder (sas-make-folder) command line tool documented in the SAS 9.4 Intelligence Platform: System Administration Guide, Third Edition” under “Batch Tools for Metadata Management”.
The source code for the MKDIRMD macro mentioned below has a check for SAS 9.2 at the end, that should include later versions of SAS (if used with later versions of SAS). However, I would strongly recommend using one of the newer supported methods instead (as mentioned above).
The inspiration for this post came from a question at sasprofessionals.net about code to create tree folders in a SAS® metadata repository. It sounded like a good challenge considering that:
- Creating a Tree object in metadata is relatively straightforward, but finding the correct parent Tree object to associate it with takes more work. You can’t search by the parent folder name in isolation because there might be multiple folders with the same name at different locations in the tree (e.g. there could be 2 folders both named Reports at /ACME/Sales/Data and /ACME/HR/data). The parent folder could be specified by its object id but that’s a bit tedious. A neater method would be to allow the parent path to be specified in absolute terms (e.g. /ACME/HR/Data/) and get the code to walk down the tree to find the correct unique parent Tree object (e.g. Data under HR under ACME).
- It should be able to create top level folders in the root of the tree as well as folders at lower depths. Top level folders are represented slightly differently in metadata than lower level folders. They don’t have a ParentTree association but are instead associated with a SoftwareComponent.
- It should fail if a folder with the same name already exists in the parent folder. The metadata API allows you from create duplicate named folders in the same parent folder.
- It should check all return codes and fail fast – it is being used to update metadata after all.
- It would be good if it worked in both SAS 9.1 and SAS 9.2
I had some metadata API fun writing a MKDIRMD macro that satisfied all of the above. Here is an example of it being used:
I have uploaded the MKDIRMD.SAS code I wrote so it can be used by anyone that may have a need for it, or by those who might want to review it as an example program that uses the SAS Open Metadata Interface to query and update metadata. It includes examples of XMLSelect filters on both attribute criteria and association paths. I am publishing this code under the GNU LGPL license so it can be freely used. I have tested the code in both SAS 9.1.3 SP4 and SAS 9.2 M3 but it is provided “as-is” and should be used with care.
Be aware that with any code like this, that updates your metadata, it is strongly recommended that you have a recent backup (that is known to work) and test the code in a non-production environment. I prefer testing things like this in a private administrator environment (Lev9) since even development environments should be considered valuable.