Moving Code from IRIS to Caché

Question

Question

Robert Cemper · Jun 3, 2020

#Tips & Tricks #Tools #Caché #InterSystems IRIS

I'm sure it was mentioned in some thread. I just can't find it anymore.

There is some setting that allows exporting .mac,.int,.cls from IRIS in a way
that it can be imported by Caché without fiddling in the generated XML files

Discussion (6)4

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Robert Cemper · Jun 3, 2020

finally found it

do $system.OBJ.SetQualifiers("/exportversion = 2016.2.")

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Jenna Poindexter · Jun 3, 2020

Robert

Obviously the class keywords and source could diverge and become incompatible.

That said, take a look at the header in the export file. Should be as simple as changing IRIS to cache

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Rubens Silva · Jun 3, 2020

EDIT: Now that I have seen this qualifier, I'll be doing some tests to see the result.
EDIT #2: Looks like it works as I intended, so please ignore the text below.

~~Yes, this is really painful if you think about using IRIS to generate artifacts for relatively new Caché versions. They can't read some changes that IRIS made, like:~~

* IRIS also moves away from %Library.CacheStorage which is used by Caché as it instead now uses %Storage.SQL. It also unifies the storage strategy for both: %Persistent classes and custom storage, which Cache used two distinct storage classes, one being %CacheStorage.
* Some XML elements have been modified or wiped out.
* The XML header now prints generator=IRIS instead of generator=Cache.
* Methods that have [ Language = cache ]. are now converted to [ Language = objectscript ].

This is what lead us to create a custom docker image that hosts Caché instead of IRIS for using it to generate continuous delivery.

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score 0 · Answer 1 · 2020-06-03T08:24:40-04:00

Ben Spead · Jun 3, 2020

You beat me to it Robert :) Glad you tracked it down

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score 0 · Answer 2 · 2020-06-03T11:03:45-04:00

I saw this differences before fiding the qualifier.
That caused me a headache thinking over larger packages.

score 0 · Answer 3 · 2020-06-03T07:36:55-04:00

I like to export my project at certain times and later use winmerge to compare and see what has changed. I think to create a utility to automate the fiddle the xml files to compare like neutralizing creation time and compile time. Maybe remove storage from xml when possibly moving code from iris to cache. I just need to find the correct open to be able to read from the beginning of a file. I get error an end of stream error when I try to read from file.