120229 - rdfliner does not support same resource appearing >1 time in the rows

Status: RESOLVED INCOMPLETE

(Core Graveyard :: RDF, defect)

Description

[Chris Waterson]

The rdfliner doesn't currently support the same resource appearing more than
once in the row set. (It freaks out and generally gives unpredictable behavior,
sometimes crashes.)

The issue is that nsOutlinerRows::Find only finds the first instance of an
nsIRDFResource *, and its consumers (primarily
nsXULOutlinerBuilder::ReplaceMatch and nsXULOutlinerBuilder::SynchronizeMatch)
use it in such a way that only one instance is assumed.

Changing this would imply that these operations require a full scan of the
outliner's rows (which really isn't that much worse than what we do now; e.g.,
if we can't find a match). Maybe someone cleverer than I can think of an
efficient reverse-lookup structure that's easy to keep in-sync with the outliner
rows themselves.

Comment 1

[benc]

tever is not RDF QA anymore

Comment 2

[Axel Hecht]

waterson left the building