Thanks a lot. Updated to 0.8-SNAPSHOT. Strangely maven did not resolve
groovy dependence automatically. Had to add it by hand.
ScriptEngine approach works fine, Gremlin.compile(expr) does not?
I understand that it could be faster&cleaner to use groovy, but I need
to be able to pass string queries and get results back.
In my use-case this is the definite use of gremlin - arbitrary string
queries. For "static" business logic I can use Pipes - I'm not
bothered by the wordy expressions.
Alfredas
On Mon, Feb 21, 2011 at 4:23 PM, Marko Rodriguez <okramma...@gmail.com> wrote:
> Hi,
>
> outE(String) is in Gremlin 0.8-SNASPHOT, not Gremlin 0.7.
>
> Note at the bottom of the main Wiki page: "Gremlin documentation is up to
> date with the current Gremlin codebase, not with the latest Gremlin release."
>
> I do this so its easier for me to maintain documentation. The documentation
> for Gremlin 0.7 is in the doc/wiki directory of the distribution.
>
> If you still want to use Gremlin 0.7, do this:
>
> engine.eval("v.outE[[label='KNOWS']].inV >> results");
>
> Finally, I would recommend using Groovy in your codebase instead of JSR 223
> ScriptEngine. Groovy and Java work seamlessly together and its so much
> handier/cleaner/faster than through JSR 223. See:
> https://github.com/tinkerpop/gremlin/wiki/Using-Gremlin-through-Groovy
>
> Hope that helps,
> Marko.
>
> http://markorodriguez.com
>
>
> On Feb 21, 2011, at 9:15 AM, Alfredas Chmieliauskas wrote:
>
>> Dear all,
>>
>> I have the following code:
>>
>> ScriptEngine engine = new GremlinScriptEngineFactory().getScriptEngine();
>> List<Vertex> results = new ArrayList<Vertex>();
>> engine.getBindings(ScriptContext.ENGINE_SCOPE).put("g", getGraph());
>> engine.getBindings(ScriptContext.ENGINE_SCOPE).put("v",
>> getVertex(startNode));
>> engine.getBindings(ScriptContext.ENGINE_SCOPE).put("results", results);
>> try {
>> engine.eval(v.outE('KNOWS').inV >> results");
>> } catch (ScriptException e) {
>> logger.error(e.getMessage(), e);
>> }
>>
>> ....produces the following error:
>>
>>
>> ERROR javax.script.ScriptException:
>> groovy.lang.MissingMethodException: No signature of method:
>> com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jVertex.outE() is
>> applicable for argument types: (java.lang.String) values: [KNOWS]
>> Possible solutions: outE(groovy.lang.Closure), dump(),
>> use([Ljava.lang.Object;), getAt(java.lang.String),
>> getAt(java.lang.String), with(groovy.lang.Closure)
>> javax.script.ScriptException: javax.script.ScriptException:
>> groovy.lang.MissingMethodException: No signature of method:
>> com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jVertex.outE() is
>> applicable for argument types: (java.lang.String) values: [KNOWS]
>> Possible solutions: outE(groovy.lang.Closure), dump(),
>> use([Ljava.lang.Object;), getAt(java.lang.String),
>> getAt(java.lang.String), with(groovy.lang.Closure)
>> at
>> org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:117)
>> at
>> com.tinkerpop.gremlin.jsr223.GremlinScriptEngine.eval(GremlinScriptEngine.java:36)
>> at
>> javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:247)
>> at
>> com.tinkerpop.gremlin.jsr223.GremlinScriptEngine.eval(GremlinScriptEngine.java:32)
>> at
>> alfredas.springdatagraph.template.domain.AbstractRepository.findAllByGremlin2(AbstractRepository.java:94)
>> at alfredas.springdatagraph.template.App.<init>(App.java:84)
>> at alfredas.springdatagraph.template.App.main(App.java:93)
>> Caused by: javax.script.ScriptException:
>> groovy.lang.MissingMethodException: No signature of method:
>> com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jVertex.outE() is
>> applicable for argument types: (java.lang.String) values: [KNOWS]
>> Possible solutions: outE(groovy.lang.Closure), dump(),
>> use([Ljava.lang.Object;), getAt(java.lang.String),
>> getAt(java.lang.String), with(groovy.lang.Closure)
>> at
>> org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:318)
>> at
>> org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:111)
>> ... 6 more
>> Caused by: groovy.lang.MissingMethodException: No signature of method:
>> com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jVertex.outE() is
>> applicable for argument types: (java.lang.String) values: [KNOWS]
>> Possible solutions: outE(groovy.lang.Closure), dump(),
>> use([Ljava.lang.Object;), getAt(java.lang.String),
>> getAt(java.lang.String), with(groovy.lang.Closure)
>> at
>> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:54)
>> at
>> org.codehaus.groovy.runtime.callsite.PojoMetaClassSite.call(PojoMetaClassSite.java:46)
>> at
>> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)
>> at
>> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
>> at
>> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:124)
>> at Script1.run(Script1.groovy:43)
>> at
>> org.codehaus.groovy.jsr223.GroovyScriptEngineImpl.eval(GroovyScriptEngineImpl.java:315)
>> ... 7 more
>>
>>
>> And the alternative method:
>>
>> Gremlin.compile("outE('KNOWS').inV)";
>>
>> gives:
>>
>> Exception in thread "main" groovy.lang.MissingMethodException: No
>> signature of method: Script1.outE() is applicable for argument types:
>> (java.lang.String) values: [KNOWS]
>> Possible solutions: run(), run(), dump(), use([Ljava.lang.Object;),
>> putAt(java.lang.String, java.lang.Object), with(groovy.lang.Closure)
>> at
>> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:54)
>> at
>> org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:78)
>> at
>> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44)
>> at
>> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
>> at
>> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:149)
>> at Script1.run(Script1.groovy:22)
>> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:576)
>> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:614)
>> at groovy.lang.GroovyShell.evaluate(GroovyShell.java:585)
>> at groovy.lang.GroovyShell$evaluate.call(Unknown Source)
>> at
>> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)
>> at
>> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
>> at
>> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:124)
>> at com.tinkerpop.gremlin.Gremlin.compile(Gremlin.groovy:70)
>> ....
>>
>> Any ideas?
>>
>> Alfredas
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