DiffGatherTask does not properly identify missing Diffs

[binfalse]

Apparently, when triggering the /diff/service/trigger endpoint of https://github.com/SemsProject/masymos-diff-rest (some?) diffs are re-computed!? That is, there may be multiple DIFF nodes between two DOCUMENT nodes..

Especially annoying as #1 is unfixed..

[binfalse]

There seems to be a mistake in

masymos-diff/src/main/java/de/unirostock/sems/masymos/diff/DiffGatherTask.java

Line 129 in 331678b

String query = "Match (a:DOCUMENT)-[:HAS_SUCCESSOR]->(b:DOCUMENT) Where NOT (a)-->(:DIFF)-->(b) and (a)-->(:MODEL) and (b)-->(:MODEL) Return a,b Limit {limit}";

(and the following queries)

The connections between DOCUMENT and DIFF is always DOCUMENT-[]->DIFF! The query, however, searches for

Where NOT (a)-->(:DIFF)-->(b)

while it should search for

Where NOT (a)-->(:DIFF)<--(b)