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Add child dataset structure for fields containing child datasets to dfuGetMetadata service

Description

When trying to get the full data structure of a thor file containing child datasets, dfuGetDataColumns and dfuGetFileMetadata both return only the top level of fields. To figure out the child dataset record structure I currently have to parse through the ecl record structure for the file to figure it out. It would be great if dfuGetFileMetadata could return nested field definitions for child datasets.

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Rodrigo Pastrana July 30, 2015 at 1:18 PM

Great work Kevin, I'm eagerly awaiting this change, Thanks.

Kanghua Wang July 30, 2015 at 1:14 PM

In fact, the getChildMeta() will NOT provide accurate information for nested RECORD types. Gavin's suggestion is to get the information from the meta inline. And I tested it and it works. I will implement it soon.

Rodrigo Pastrana July 30, 2015 at 1:05 PM

based on Gavin's comments, getChildMeta() should provide accurate information for nested RECORD types. If it is not, we should create a jira.

Gavin Halliday July 22, 2015 at 10:56 AM

As far as I remember the fields for records are expanded inline. - so they will be all the fields between the beginRecord and the endrecord.

Kanghua Wang July 21, 2015 at 6:43 PM

The getChildMeta() does work for dataset. How about RECORD? I have a file with a field DisplayType = TypeBeginRecord. The IResultSetMetaData returned by getChildMeta() gives ColumnCount=0.

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Pull Request URL

https://github.com/hpcc-systems/HPCC-Platform/pull/7631

Affects versions

Created July 14, 2015 at 4:15 PM
Updated August 18, 2015 at 9:26 AM
Resolved August 18, 2015 at 9:26 AM