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[sphinx-dev] Migrating Sphinx IncQuery integration to Viatra Query

Dear Sphinx developers,

As most of you are aware, the current IncQuery used in sphinx is quite outdated. We've provided a patch which migrates to a more recent, 1.2.1 version (in the meantime EMF-IncQuery was merged into the Viatra project and is now called Viatra Query). The patch is uploaded as an attachment to https://bugs.eclipse.org/bugs/show_bug.cgi?id=501899. This change also involves removing the simple patterns and reimplementing their functionality using the Viatra Query Base Index resulting in a much shorter and simpler code.

One of the reasons we would like to incorporate this change is that our acquaintances from the Artop community told us that they're experiencing performance difficulties caused by the way EMF-IncQuery is used in Sphinx.

We would like to ask you to review and if possible, merge the change. Our intention is to continue helping the Sphinx project regarding its Viatra Query integration in the future. We're looking forward to further cooperate with you.

Best regards,
Balázs Grill and the Viatra project team



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