RE: GremlinGroovyScriptEngine

[Pieter Martin]

Hi,

I am using gremlin's GremlinGroovyScriptEngine in my application.

However I would like to use the groovy scripting feature of setting a base script class.
This is done on the CompilerConfiguration class.

Currently this object is not accessible in GremlinGroovyScriptEngine. I have, for now copied your implementation adding in

    public UmlgGremlinGroovyScriptEngine(final String scriptBaseClass, final ImportCustomizerProvider importCustomizerProvider) {
        Gremlin.load();
        final CompilerConfiguration conf = new CompilerConfiguration();
        conf.setScriptBaseClass(scriptBaseClass);
        conf.addCompilationCustomizers(importCustomizerProvider.getImportCustomizer());
        this.loader = new GroovyClassLoader(getParentLoader(), conf);
    }

Is it possible to refactor GremlinGroovyScriptEngine a tad to allow users to set the ScriptBaseClass ?

Thanks
Pieter

[Stephen Mallette]

I would think so.  I could see that being useful. Is it possible for you to provide a pull request for that?  If not, please create an issue in Github.

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[Marko Rodriguez]

Hi,

What dose the "baseScriptClass" do?

Marko.

http://markorodriguez.com

[Pieter Martin]

Hi,

Its a place to put generic groovy stuff that will be available to the scripting engine.
I'll push a pull request shortly.

My particular usecase is to filter out soft deleted vertexes from g.V
I can do this with a groovy interceptor. For groovy interceptors I need to define,

    def useInterceptor= { Class theClass, Class theInterceptor, Closure theCode->
        def proxy= ProxyMetaClass.getInstance( theClass )
        def interceptor= theInterceptor.newInstance()
        proxy.interceptor= interceptor
        proxy.use( theCode )
    }

It seemed to me the best place to put this is in the base script.

If there is a better way then I am all ears.

Thanks
Pieter

[Stephen Mallette]

see the "Evaluate Scripts with a Common Base Class" section here:

http://groovy.codehaus.org/Embedding+Groovy

[Pieter Martin]

Ok, I created the pull request. It includes a test case that uses the script base class for my interceptor vibe.
Regards
Pieter