I cloned and compiled the current version of gmark and now I get a strange behaviour when executing it:
gmark is generating graph files infinitely where most of the files contain only less than 10 edges. For example with the 'play.sh' script it generates three larger files at first (probably because of 'test.xml' definition) and then those smaller files. The filenames look like this (counting upwards):

• 'play-graph.txt0.txt'
• 'play-graph.txt1.txt'
• 'play-graph.txt2.txt'
• ...

gmark stucks in this generation loop until you kill it.
I tried it also with 'shop.sh', 'test.sh' and different operation systems. I always get the same behaviour.

Has anyone seen this behaviour before or has an idea what the problem could be?

gmark version: ebe0fd7
compilation: with 'demo/scripts/compile-all.sh' on Win10 64bit with Cygwin 2.8.0(0.309/5/3) and also on Ubuntu 14.04 LTS (VM on Windows host)
hardware: AMD Phentom II X6 1090T, 12GB RAM

Let me know if you need more information.

I compiled gmark on Ubuntu and ran the scripts. The output seems fine, but a segmentation fault occurs while running the script. To reproduce the issue, I created a Travis configuration file. Its output also shows the error: https://travis-ci.org/FTSRG/gmark/builds/265882692#L518

Why does this segfault occur?

I'd happy to submit a PR if you think Travis CI would be useful for gmark.

The translated cypher queries tend to have multiple UNIONs with no RHS. See this query for example. These queries can't be parsed by databases which expose openCypher interfaces (e.g., Neo4j).

Hello,

I have tried to use the tool to generate queries but I have problems changing the use cases. My first problem it that gmark segfaults on various "use cases" I design. For instance, a minimal example where gmark segfaults on my machine (I supposed that only 1 conjunct is allowed but maybe not):

git clone https://github.com/graphMark/gmark.git
cd gmark
sed 's/<conjuncts min="3" max="4"/<conjuncts min="1" max="3"/' -i use-cases/test.xml
cd src
make
./test -c ../use-cases/test.xml -g ../demo/test/test-graph.txt -w ../demo/test/test-workload.xml -r ../demo/test/

Furthermore, I have tried several settings but I cannot manage to create recursive queries. It seems to me that the setting should be the star setting but it does not seem to work. For instance, none of the queries in the demo/ folder seems to include recursivity while the use-cases all have
<multiplicity star="0.5"/>

Thanks in advance !

the conditions generated are in all SQL queries like s2.label = isLocatedIn without quotes surrounding the predicates.

Could you please add an explicit LICENSE file to the repo so that it's clear under what terms the content is provided, and under what terms user contributions are licensed?

Per GitHub docs on licensing:

[...] without a license, the default copyright laws apply, meaning that you retain all rights to your source code and no one may reproduce, distribute, or create derivative works from your work. If you're creating an open source project, we strongly encourage you to include an open source license.

Thanks!