import: level for dominance edges might be not set

[thomaskrause]

On import first all "real" roots are compuated and the "root" column is set as a result. This "root" column is used as the starting point indicator for the level calculations. This behavior is wrong and inconsistent to previous releases. The right way of doing this is to use the real roots for the "root" column but the level should be set for all nodes that have no parent.

Queries affected:
This can only affect queries of the form >secedge m,n .
Since all primary dominance components have a real root, this affects only corpora with secondary edges. These edges normally do not form complex structures in their self so querying them make no sense.
Pointing relations are not affected since they do not have subcomponents and the real root is identical to the parent is null condition.

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Imported from Launchpad using lp2gh.

• date created: 2011-10-07T16:20:27Z
• owner: krause
• assignee: krause
• the launchpad url was https://bugs.launchpad.net/bugs/870108

[thomaskrause]

(by x-launchpaduser1153)
Not sure I understand. The original code computes the level node with reference of the node's component. The component's root (that may or may not be a real root) is assigned a level 0 and so on. Does the patch restore this behavior or change it?