Do page assets created by web services apply default values from data definitions?

b.leblanc's Avatar


10 Aug, 2016 07:17 PM

I am using web services to import a large number of page assets from an external XML file. The data definition I'm using to create the pages has a number of fields with default values, some of which are not included in the XML file and will be entered manually at a later time. The import is working fine for all the fields I specifically capture from XML, but for additional fields I do not explicitly set a value for, the value is always blank as opposed to using the default value set in the data definition.

Is this an expected result from web services or am I missing something on the asset creation? I could always set the default values directly in my code but it would be cleaner to have them pick up from the data definition if possible.

  1. 1 Posted by Wing Ming Chan on 10 Aug, 2016 07:43 PM

    Wing Ming Chan's Avatar

    Yes, this behavior is expected, because there is no direct communication between the process of creating/editing a page and the page's associated data definition. You have to manually read the default value of a field and use it to set the value of the corresponding node.


  2. 2 Posted by b.leblanc on 10 Aug, 2016 07:48 PM

    b.leblanc's Avatar

    Ok that makes sense.

    Thanks Wing. Big fan of your library!

  3. 3 Posted by Wing Ming Chan on 10 Aug, 2016 07:50 PM

    Wing Ming Chan's Avatar

    Inspired by your question, I have just added a recipe on github:

    I also plan to enhance the DataDefinition class by adding methods to deal with default values.


  4. 4 Posted by b.leblanc on 10 Aug, 2016 08:23 PM

    b.leblanc's Avatar

    Thanks again! I think I can get it working from the recipe. I also have a few questions about batch creation/editing with your library. Should I create a new thread for that?

  5. 5 Posted by Wing Ming Chan on 10 Aug, 2016 09:15 PM

    Wing Ming Chan's Avatar

    Please go ahead and post your questions. If you state your questions with keywords, the search engine will find them.


  6. 6 Posted by b.leblanc on 11 Aug, 2016 01:21 PM

    b.leblanc's Avatar

    My import is creating/updating a data set of about 17k records so I'd really like to do the operation in batches. I see there's a batch operation function in the AssetOperationHandlerService but I didn't see a current method for batching a large number of operations leveraging the other classes.

    Is my best bet to extend the Cascade class and override the createAsset function batch the operations or is there a better way in the library that I've missed? I suppose that would work for create but editing, if I'm not mistaken, is controlled individually by descendants of the Asset class, so there may not be a single point of override there.

    Thanks for all your help with this.

  7. 7 Posted by Wing Ming Chan on 11 Aug, 2016 03:37 PM

    Wing Ming Chan's Avatar

    Yes, you are right on all points.

    1. I did not provide a batch operation because I did not see the need of it. The most I have to tolerate is execution time. I can afford that when I need a coffee or do a cron job.

    2. Each Asset subclass can be used to deal with a single asset. There is no batch mode, so to speak.

    3. You can definitely subclass Cascade to add the functionality. If you succeed, please share your code. I will be more than happy to add your code to my class, and add your name to the file to acknowledge your contribution.


  8. 8 Posted by b.leblanc on 11 Aug, 2016 03:54 PM

    b.leblanc's Avatar

    Thanks Wing. I'll see what I can put together and post it up here for you.

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