How to compare workspaces and get the outgoing changeset content?

Lan Xia (1●1●1) | asked Jan 29 '15, 9:12 a.m.
retagged Feb 06 '15, 2:20 p.m. by Dejan Custic (285●5)

Hi,

I need to compare workspaces and get the outgoing changeset content/patch, so that we can analyze the changeset content later. I am able to accomplish this by using scm commands.

-> compare workspaces to list change sets:
scm --non-interactive --config <configure> compare -I fwbs -f o workspace <ws1> workspace <ws2> -r <repo>

-> parse above output and check each change set to get the content:
scm --non-interactive --config <configure> diff changeset <id> --workspace <ws1> -r <repo>

The only issue that I have with above cmd is the performance. Each cmd takes about 20 secs to execute. Therefore, if a user has n changesets, that is, 20 * (n+1) secs, which is too slow for my web application. Is there a better way of doing it? Other scm cmd? Will RTC API help in this case? Thanks.

Thanks,

Lan

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Lily Wang (4.9k●7●14) | answered Jan 29 '15, 8:00 p.m.

Hi Lan,
Have you tried "lscm" command?
Please refer to https://jazz.net/help-dev/clm/index.jsp?re=1&topic=/com.ibm.team.scm.doc/topics/c_scm_cli.html&scope=null
"For improved performance, you can run the command line using lscm.bat or lscm. This lightweight command line version creates a daemon process on your machine that reduces the startup time and improves the execution time for most commands. "

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Lan Xia commented Jan 30 '15, 9:25 a.m.

Thanks for your suggestion, Lily. I tried lscm. It takes about the same time as scm.

I also tried RTC Java APIs, I am able to compare workspaces and list changeset content. (It takes 2 mins in total. I have about 18 changesets in my test.) Now the problem is that I can only get the file content after the change, but how can I get the patch? I would like to get the same output as diff cmd so I can tell which line is changed. Any suggestions? Thanks.

Lily Wang commented Feb 02 '15, 2:10 a.m.

I'm not familiar with API. I suggest you submit a new discussion for the API usage.

Ralph Schoon commented Feb 02 '15, 3:01 a.m.

FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER

lscm should be faster after the initial login, as the server has to start the TeamPlatform only once.

There are few examples for SCM API here: https://rsjazz.wordpress.com/2013/09/30/delivering-change-sets-and-baselines-to-a-stream-using-the-plain-java-client-libraries/
You also want to look at https://rsjazz.wordpress.com/2013/07/15/boost-your-automation-performance-using-an-automation-server/

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