@GremlinDSL support in the GremlinLangScriptEngine
Hi,
I recently sent a pull-request into the github ArcadeDB repository to add support binding custom TraversalSources to the embedded graph bound in the script engine. ArcadeDb has modes to support both the
https://github.com/ArcadeData/arcadedb/pull/1239
I realized today that the
AFAICT from the grammar, the traversalmethod are a list of static tokens, https://github.com/apache/tinkerpop/blob/c66cd566941ef7bd34d430828883f9cf79d7442f/gremlin-language/src/main/antlr4/Gremlin.g4#L178-L286 and the traversal root binding name is hardcoded to
This is a bit suprising to find as the DSL documentation doesn't mention these limitations, https://tinkerpop.apache.org/docs/current/reference/#gremlin-javascript-dsl and in the Groovy engine binding the TraversalSource to any token name is allowed.
After reading through the code, I can understand given the current implementation why these limitations might exist, but I'm curiuos if:
1. have I missed something?
2. if not, is work planned to support DSLs in the gremlin lang script engine?
3. if not, can I help?
I recently sent a pull-request into the github ArcadeDB repository to add support binding custom TraversalSources to the embedded graph bound in the script engine. ArcadeDb has modes to support both the
GremlinLangScriptEngineGremlinGroovyScriptEnginehttps://github.com/ArcadeData/arcadedb/pull/1239
I realized today that the
GremlinLangScriptEngineAFAICT from the grammar, the traversalmethod are a list of static tokens, https://github.com/apache/tinkerpop/blob/c66cd566941ef7bd34d430828883f9cf79d7442f/gremlin-language/src/main/antlr4/Gremlin.g4#L178-L286 and the traversal root binding name is hardcoded to
gGremlinLangScriptEngine#evalThis is a bit suprising to find as the DSL documentation doesn't mention these limitations, https://tinkerpop.apache.org/docs/current/reference/#gremlin-javascript-dsl and in the Groovy engine binding the TraversalSource to any token name is allowed.
After reading through the code, I can understand given the current implementation why these limitations might exist, but I'm curiuos if:
1. have I missed something?
2. if not, is work planned to support DSLs in the gremlin lang script engine?
3. if not, can I help?
GitHub
Allows customizing the gremlin script engines traversal sources. This allows clients of the database to register tinkerpop traversal DSLs or customize the traversal strategies.
Motivation
Using tin...
Motivation
Using tin...
GitHub
Apache TinkerPop - a graph computing framework. Contribute to apache/tinkerpop development by creating an account on GitHub.
Solution
The two
I believe that you should be able to process Gremlin that originated from a DSL in the
might really just compose as:
The former won't process in the grammar of
ScriptEngineGremlinLangScriptEngineGremlinGroovyScriptEngineGremlinLangScriptEngineI believe that you should be able to process Gremlin that originated from a DSL in the
GremlinLangScriptEngineg.persons()might really just compose as:
g.V().hasLabel('person')The former won't process in the grammar of
GremlinLangScriptEngineGremlinLangScriptEngineGitHub
Apache TinkerPop - a graph computing framework. Contribute to apache/tinkerpop development by creating an account on GitHub.
Apache TinkerPop is an open source graph computing framework and the home of the Gremlin graph query language.
1,376Members
Resources
Was this page helpful?
