Support for live Xtext models as sources for matching

[eclipse-viatra-bot]

| --- | --- | | Bugzilla Link | 398901 | | Status | NEW | | Importance | P3 normal | | Reported | Jan 23, 2013 11:29 EDT | | Modified | Jan 25, 2017 07:45 EDT | | Version | oldinquery | | Blocks | 398789 | | Reporter | Istvan Rath |

Description

Cloned from: 261: Query Explorer's 'Load as model' is broken\ https://github.com/ujhelyiz/EMF-IncQuery/issues/issue/261

There are the following problems with the "Load as model" option of the "green button", intended for loading eiq models as instance models.

• The model in the editor should be used, instead of a separately parsed copy. This would allow incremental pattern matching if the model is edited.

• We should discuss whether it would be better to use the resource or the entire resourceset as the matcher scope, instead of the containment subtree of the PatternModel. Since Xtext rebuids large subtrees upon each parsing, constraining the matcher to a subtree sounds risky, as it could become obsolete and pruned from the resource.\

  • There are known problems with Xtext DSLs that rely on Xbase, as large parts of the Java classpath are materialized seemingly randomly each time the model is manipulated.

[eclipse-viatra-bot]

By Istvan Rath on May 20, 2013 05:15

These features are planned for 0.8.

[eclipse-viatra-bot]

By Istvan Rath on Apr 03, 2014 10:43

I'm postponing these issues to post-0.8

[eclipse-viatra-bot]

By Istvan Rath on Apr 24, 2014 04:20

I'm expecting this to be addressed for 0.9. (via Xtext indexer support for IncQuery Base)

[eclipse-viatra-bot]

By Daniel Segesdi on Mar 25, 2016 09:59

Bug 489923 has been marked as a duplicate of this bug.

[eclipse-viatra-bot]

By Zoltan Ujhelyi on Mar 25, 2016 10:20

As described in bug 387119#c17 Xtext turns off notifications in a lot of places; so simply opting in not to suppress notifications seems infeasible.

One other idea we might pursue is to have something similar to resampling in case of the RunOnceEngine: at certain points we reindex all Xtext model files.

In case of UI scenarios, the IXtextModelListener interface used on XtextDocuments might provide information about when to reindex; in case of non-UI cases I don't know of any usable event source to reuse.

[eclipse-viatra-bot]

By Zoltan Ujhelyi on May 26, 2016 08:34

Moved to 1.4

[eclipse-viatra-bot]

By Zoltan Ujhelyi on Jan 25, 2017 07:45

Mass move of tickets we are not expecting to solve soon to the Future milestone.