DJ Adams

@qmacro.org

651 Followers 196 Following

Developer Advocate at SAP. O'Reilly and SAP Press author. SAP community pioneer and SAP Developer Network co-creator. SAP Mentor Alumnus. Learner. Runner. Just another SAP Hacker. "Bulldog of logic". Opinions my own, and there are many of them.

A large (5 metre high) sculpture in white. It is made up of a head, with the lower third missing, showing the hollow nature of the head, and it looks surprised, astonished and aghast. It is supported by three slender upward reaching arms, slightly bent at the elbows, where the head is supported by the hands. The sculpture is in the centre of the concourse at the station, which has a glass and steel roof that looks very futuristic, and shows the sky and curved buildings beyond. Some passengers are milling around.

Photo from an outside seat in the cafe part of SYTE hotel. Mannheim train station is in the near distance, past some large trees and the corner of a building. In the foreground is my laptop screen (showing lazygit in action), and a black coffee cup & saucer on a table with a white tablecloth. The sky is grey, holding a (welcome) large amount of rain that was deposited shortly after this photo was taken.

Me and Gregor smiling, in the breakfast room at the Fairway hotel

A still image from the SAP Developer News episode item showing me and the CAP release notes, and then a photo of me pointing at it, superimposed over the top.

Selfie taken at a bus stop on a country road somewhere in West Cheshire. It's warm and dry, and a mid-morning sun drenches the countryside, which from the camera angle is basically small roads, bordered by trees and hedgerow, and fields in the distance.

The list of questions, details of question 16, and me pointing at them.

A screenshot of the questions so far, grouped by week, and a link to the analysis post. Plus a photo of me, pointing to the screenshot.

A screenshot of the list of questions from the overview blog post, which now also has a link to the analysis post. There's a photo of me pointing to the screenshot too.

A screenshot of the list of questions so far:

Week 1
01 (Mon 01 Jun) Common types and aspects
02 (Tue 02 Jun) Content for common reuse types
03 (Wed 03 Jun) Declarative field control with @mandatory
04 (Thu 04 Jun) Namespaces, contexts and name prefixes
05 (Fri 05 Jun) Portable functions
Week 2
06 (Mon 08 Jun) Project specific configuration
07 (Tue 09 Jun) Authorization annotations
08 (Wed 10 Jun) CXL case-when-then operator

And a photo of me looking excited

The wide river stretches off into the far distance, straight as an arrow. It reflects the early morning blue sky which is heavy with clouds, some of them grey. Both banks are sloped and full of greenery.

A screenshot of the series post, listing the individual posts on mocking data, auth, remote services and messaging, and a photo of me pointing at the screenshot

Me pointing at the series post which lists the replays and episode notes

A spring day, sunny but with some heavy clouds threatening a change in weather. The countryside (fields, trees, bushes) stretches out into the distance, split down the middle by the canal, flanked by the (dry!) towpath on the left. A handful of narrowboats are moored in the middle distance (mine is one of them).

A view from Hurleston Lock Nr 1, looking east. The sun is glowing hazily, still low-ish in the sky, there are no clouds, just a silver blue sky. The water in the pound below Lock 1 is absolutely still, no wind. The south bank of Hurleston Reservoir can be seen on the left, covered in grass which has recently been cut. There is mist rising in the middle distance, towards the bottom of the flight, along the tree line.

A screenshot of the Expert Sessions: CAP Node.js playlist, with 4 video thumbnails. The one marked part 4 (on upgrades) is highlighted in blue, and the one marked part 3 (on CF deployments - hard mode) is highlighted in green. There's a photo of me pointing at the screenshot.

Photo looking down a wide-ish canal, water has slight ripples but is otherwise still, showing the calmness of the early morning. The sun is up, hazy and distant but already with a warm glow over the fields to the canal side. There's an old (1930's-ish) working boat in the middle distance, moored and with smoke coming from the chimney, drifting to the north. The towpath is grassy and dry - heaven!

Screenshots of a few "pages" of the detailed notes, with a photo of me standing and pointing.

Photo from the stern end of NB FULLY RESTFUL, moored on a lovely grassy (no mud!) towpath, with armco, and flat fields stretching into the distance, where a (Avanti West Coast) train runs across a low-ish viaduct. The late afternoon sun lends a warm shine to the photo.

A screenshot of a "daylight saving" correction by Pedantic Peppermint, in reply to (?) something that now just says "Blocked".

A series of screenshots from the blog post representing the notes to part 4, with me pointing at them

NB FULLY RESTFUL moored up alongside a relatively newly renovated part of the towpath, with plenty of grass verge and Armco on the bank. The sky is steel blue and there's a new barbed wire fence through which the wind was howling and blowing the boat away from the towpath.

A screenshot of part of the series post, with part 3 highlighted, and an arrow from the "notes" link pointing to screenshots of various sections of the notes for that part. A photo of me in the corner pointing excitedly, too.

An ASCII-art diagram showing 4 layers:

Category: CDS
- Definition of services
- Domain model definition
Category: JavaScript, Java
- Custom logic
Category: SQL
- Database

Coming out of the Custom logic layer, there are two arrows:

- one going left and up, with the text "push up"
- one going left and down, with the text "push down"

screenshots of various pages of the notes, with a selfie of me pointing at them

Me grinning at the camera, sitting at a conference table in my OSCON tshirt and shorts, working on a tiny laptop with a PCMCIA WiFi card sticking out of the side.

A screenshot of the series post, with a red arrow from the new "notes" link pointing to a screenshot of a couple of pages from the post which has the notes to part 1 of the series. Also a selfie where I'm wearing winter gear and pointing upwards at the arrow.

Photo of an early morning landscape with a steely purple sky, a full moon in the distance, and meadows rolling from the foreground to the middle distance where woodlands start. There's a large old (oak?) tree in the right foreground, with ever shrinking branches that look like the capillaries in a lung.

The Expert Session thumbnail, showing a photo of me and Daniel Schlachter, with the text:

Deploying to Cloud Foundry
CAP Node.js
Expert Session

and the number 2 (for part 2) in a circle.

a screenshot of my AWK terminal explorer, showing source CSV data in the top right, a short AWK script definition in the bottom right, and the output on the left.

A 1960's classic British telephone with a rotary dial mechanism. Both letters and numbers are visible for each of the rotary positions.

a screenshot of the SAP Developer News playlist on YouTube, a screenshot of the content of the post about the Did You Know videos, with the latest one highlighted, and a "Did You Know?" title box

A still image from the replay of this morning's live stream, showing Patrice in the top right corner, and his screen shared, showing a CDL based service definition on the left and the "CAP-style SQL" for a query on the right, as well as the results of that query. There's also the usual overlaid selfie with me looking like an idiot, giving a thumbs up, in the bottom right corner.

Narrowboat FULLY RESTFUL moored up, towpath on left, and a clear 9am cold and blue morning sky in the background, providing a backdrop to the very few trees in the vicinity.

A milepost, with "Shardlow 46 miles" on one side and "Preston Brook 46 miles" on the other, and there's a small plaque at the bottom which has

R&D (I think)
Stone
1819

Behind the milepost is a beautifully neat old brick wall with curved top stones, a bush growing politely over it on one side, and behind that there's a slated roof and chimney of a cottage visible.

Fuel boat Alton tied up alongside my narrowboat FULLY RESTFUL; the front bulkhead of Alton's cargo area has "COAL", "Smokeless" and "Diesel (base rate 1.08)" hand painted white on blue. The front part of the cargo area is covered with tarpaulin (to keep the wood fuel dry, and you can also see some propane gas canisters further down. It's a sunny day, and the solar panels on FULLY RESTFUL are enjoying the rays.

A table of draft tutorials, with links, title, status and feedback possibilities.

Two screenshots. The first is from https://cap.cloud.sap/docs/releases/ showing a table of releases, where the Feb 2026 release (not out yet) is available. The second is that Feb 2026 release overview. There's a selfie where I'm looking happy about this.

A photo from the towpath of NB FULLY RESTFUL, looking south, where the canal bends round in the distance, where another narrowboat is moored. The sky is grey blue, overcast, and the trees are still bare, a typical February morning.

One of the diagrams from the post, showing the "shift left" idea going from right (frontend) to left.

A screenshot of the video thumbnails in the "Under the hood: CDS Expressions in CAP" series on YouTube, with a photo of me looking happy, pointing at them.

a screenshot of the SAP Developers YouTube channel home, showing the header and a couple of upcoming live stream sessions. A photo of me, pointing at the screenshot.

A still image from the live stream replay, showing a cds REPL session on the left hand side where we're examining some "intermediate" SQL flavoured CQN (from the forSQL function), and on the right hand side the browser is open at the "ref (path expression)" part of the CXL topic in Capire (https://cap.cloud.sap/docs/cds/cxl#ref).

And as usual there's a silly photo of me overlaid in the corner, this time wearing a warm hat and scarf.

$The last few lines of log output from a CAP Node.js server, which are: [cds] - server listening on { url: 'http://localhost:4004' } [cds] - server v9.7.0 launched in 296 ms [cds] - [ terminate with ^C ] ^C [cds] - my watch has ended.$

A crowded Euston railway station with a large display suspended from the ceiling. Superimposed onto the display is a photo of me pointing and looking excited, and this content:

> q1
cds.ql {
SELECT: {
from: { ref: [ 'Bookshop.Books' ] },
where: [ { ref: [ 'title' ] }, 'like', { val: 'Book%' } ]
}
}

A terminal session showing the output of cds -v at 9.7, all newly formatted

; cds v
@sap/cds-dk (global) 9.7.0 ~/.npm-packages/1ib/node_modules/@sap/cds-dk
cds. home ~/.npm-packages/1ib/node_modules/@sap/cds-dk/node_modules/@sap/cds
cds.root /work/scratch
npm root -1 . /node_modules
npm root -g ~/.npm-packages/1ib/node_modules
Node. js 22.17.1 [usr/local/bin/node
# /work/scratch

The cover of a book.

Title:
The AWK Programming Language

Subtitle:
Second Edition

Author List:
Alfred V Aho
Brian W Kernighan
Peter J Weinberger

Also Includes Publisher Series:
Addison-Wesley Professional Computing Series

There's a small picture of two sea birds (I'm not sure what they are, could be penguins) in the water.

Narrowboat FULLY RESTFUL moored up, a nice clean towpath runs alongside the port side I to the north distance, and narrowboats can be seen moored on the offside top, next to a white building.

A still image from the live stream, showing CDL on the left hand side, and an intermediate SQL construct on the right, via the forSQL() function. Patrice is in the upper left, typing away, and there's a selfie of me, pointing, super-imposed over the still image.

A screenshot of the @capire/common README, plus a screenshot of the "Modules, modularity & reuse in CDS models" series post, with today's post "Digging into @capire/common" highlighted. Plus a selfie where I'm pointing and exclaiming.

A screenshot of some SQL, and a screenshot of an ASCII art diagram showing code push up and push down, from the blog post. Also a selfie where I'm smiling and giving a thumbs up.

a still image from the replay, showing Patrice's screen with VS Code, where he has some CDL on one side, and a cds REPL session on the other, which is showing details of an entity in the machine representation of CSN, and specifically the declarative constraint that's been carried through to the title element of the Books entity in the service. Patrice is in a small video window in the corner, in full flow, and there's a superimposed selfie where I'm grinning and looking a bit of an idiot.

Some nonsense stating that vmblog.xom is verifying that I'm human, as much an insult as it is ignorant.

a screenshot of Miniflux's screen showing my new subscription to Marian's blog, with the 4 entries in there so far, all marked as unread by me.

A notice on a silver metal plate, affixed to some ornate black railings. The notice says:

PRIVATE PROPERTY
BICYCLES WILL BE REMOVED
WITHOUT NOTICE

a screenshot of the series post, with the new part 3 highlighted, pointing to a screenshot of the first part of the blog post for part 3, and also a screenshot of the qmacro/common package on GitHub. Plus a photo of me giving a thumbs-up.