topic Re: Committing successful individual operation before Rollback in Alfresco Archive

Committing successful individual operation before Rollback

ashokharnal — Sun, 20 May 2012 10:16:18 GMT

I am trying to transform all pdf files in a folder to plain text; extract some meta-datafrom each one of the plain text files and as it gets extracted, fill up Alfresco meta datafields for that pdf file with those extracted values from text file.However, if even in a single file there is a transfor

Re: Committing successful individual operation before Rollback

mrogers — Sun, 20 May 2012 20:02:28 GMT

I'd write the action in Java and have each transformation in a separate transaction.

AFAIK you can't control transactions through the script API.

Or another option could be to queue actions to do the transformations asynchronously. That's possibley a much better approach.

Re: Committing successful individual operation before Rollback

ashokharnal — Mon, 21 May 2012 00:29:37 GMT

Dear mrogers,

Kindly consider the following part of your reply:

Or another option could be to queue actions to do the transformations asynchronously. That's possibly a much better approach.

Please amplify it. How do we queue actions? Does it mean, I write a javascript for operation on one file and then design an inbound rule, that as and when a pdf file enters the particular folder, the java script will run in the
background to work on that pdf file.

I am uploading around 300GB of data residing in about 1600 files through smbclient. The uploading is being
done in batches and will take around a week's time. This operation is being carried out in various offices (for each office around 300GB). Uploading data through smb is also time consuming process. Meanwhile this background process (on each pdf file) may start slowing down uploading. Or is there some way to control it?

Ashok Kumar Harnal

Re: Committing successful individual operation before Rollback

ashokharnal — Mon, 21 May 2012 02:46:11 GMT

Dear mrogers,

I am experimenting with scheduling action with 'transactionmode' set as ISOLATED_TRANSACTIONS
and building a query template that will filter all nodes (pdf files) from Drafts folder.

Is it possible to change the query and scheduler definitions without restarting Alfresco? In that case where
should I place these definitions?

I will be grateful for help.

Ashok Kumar Harnal

Re: Committing successful individual operation before Rollback

ashokharnal — Mon, 28 May 2012 01:39:39 GMT

Well I was finally successful. Instead of building a loop in javascript that iterates over all files,
and works on them. I coded javascript that worked only on one document. To make this code to work
on all desired nodes, a query template was provided in Scheduled action xml file and
the transaction mode was set to ISOLATED_TRANSACTIONS. Even if the code failed to work over
any pdf file, action would continue and would then pass on to the next pdf file to work upon it.