eclipse


BIRT Report - group tables with different data


I am new to BIRT and I can't really figure out how Data Binding works. I need your help :)
I have two tables that need to be linked (Element(s) with Sub Element(s)) and create groups of tables depending on how many elements and Sub Elements I have.
There is an ID on each table to join them(BOBJECT_ID in Elements is equals with BOBJECT_ID in Sub Elements).
Scenarios:
I can have 1 Element with 0 or N Sub Elements
I can have N Elements with 0 or N Sub Elements each
To give more infos, here is an example:
1 Element with 11 Sub Elements
This is an example in case there is only one Element - The Element 1 is represented in the first table and the second table represents the Sub Elements of the Element 1.
In case there is another Element with Sub Elements, I need to create another 2 tables exactly like this one with the corresponding data.
If I have 10 Elements each one with 5 Sub Elements, I have to create 10 groups of the 2 tables with each Element and his 5 Sub Elements.
Thank you!
Depending on what solution you decide you'll need tow tables or just one table.
two possiblities:
"Table in Table"
Create Dataset for outer data
Create Dataset for inner sub-data
Create one Table for outer data and add a second "Details Row"
Create second Table nested in the second "Details Row"
Filter this second Table to show only entries with outer row's ID
"Joined Dataset / Grouping on Table"
Create a Joined Dataset
Create one Table looping on that data
Add Grouping to that one Table

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