3.3.2-SNAPSHOT - .as following branch(.flaMap(),.local()) failing

Bailey Glen

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Oct 13, 2017, 11:30:10 AM10/13/17

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Working with 3.3.2-SNAPSHOT built from fa246a1899b0d2165b43642f7ee0c21fe64ee6d9

g.V().as('bob')

vs

g.V().flatMap( as('bob') )

The second of these is failing for me in gremlin-console with tinkergraph, console remote to server with tinkergraph and neo4j.

However, they both work from python-gremlin

g.V().flatMap( as_('bob')).toList()

If this should be working, I can submit the bug request.

If not, why not, and why is it working in python-gremlin?

Error Details

gremlin> g.V().flatMap(as('bob'))
groovysh_parse: 2: unexpected token: as @ line 2, column 15.
   g.V().flatMap(as('bob'))
                 ^


1 error
Type ':help' or ':h' for help.
Display stack trace? [yN]y
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
groovysh_parse: 2: unexpected token: as @ line 2, column 15.
   g.V().flatMap(as('bob'))
                 ^


1 error


        at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
        at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:107)
        at org.codehaus.groovy.control.ErrorCollector.addFatalError(ErrorCollector.java:149)
        at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:120)
        at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:132)
        at org.codehaus.groovy.control.SourceUnit.addError(SourceUnit.java:350)
        at org.codehaus.groovy.antlr.AntlrParserPlugin.transformCSTIntoAST(AntlrParserPlugin.java:144)
        at org.codehaus.groovy.antlr.AntlrParserPlugin.parseCST(AntlrParserPlugin.java:110)
        at org.codehaus.groovy.control.SourceUnit.parse(SourceUnit.java:234)
        at org.codehaus.groovy.tools.shell.RigidParser.parse(Parser.groovy:159)
        at org.codehaus.groovy.tools.shell.Parser.parse(Parser.groovy:75)
        at org.codehaus.groovy.tools.shell.Groovysh.execute(Groovysh.groovy:178)
        at org.apache.tinkerpop.gremlin.console.GremlinGroovysh.super$3$execute(GremlinGroovysh.groovy)
        at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1213)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:132)
        at org.apache.tinkerpop.gremlin.console.GremlinGroovysh.execute(GremlinGroovysh.groovy:72)
        at org.codehaus.groovy.tools.shell.Shell.leftShift(Shell.groovy:122)
        at org.codehaus.groovy.tools.shell.ShellRunner.work(ShellRunner.groovy:95)
        at org.codehaus.groovy.tools.shell.InteractiveShellRunner.super$2$work(InteractiveShellRunner.groovy)
        at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1213)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:132)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:152)
        at org.codehaus.groovy.tools.shell.InteractiveShellRunner.work(InteractiveShellRunner.groovy:124)
        at org.codehaus.groovy.tools.shell.ShellRunner.run(ShellRunner.groovy:59)
        at org.codehaus.groovy.tools.shell.InteractiveShellRunner.super$2$run(InteractiveShellRunner.groovy)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1213)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:132)
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:152)
        at org.codehaus.groovy.tools.shell.InteractiveShellRunner.run(InteractiveShellRunner.groovy:83)
        at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:232)
        at org.apache.tinkerpop.gremlin.console.Console.<init>(Console.groovy:146)
        at org.codehaus.groovy.vmplugin.v7.IndyInterface.selectMethod(IndyInterface.java:232)
        at org.apache.tinkerpop.gremlin.console.Console.main(Console.groovy:453)

Marko Rodriguez

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Oct 13, 2017, 11:38:32 AM10/13/17

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__.as(‘bob’)

Marko.

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Robert Dale

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Oct 13, 2017, 11:40:20 AM10/13/17

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Some words are reserved in groovy thus you must use the anonymous traversal explicitly.

g.V().flatMap(__.as('bob'))

Robert Dale

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Bailey Glen

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Oct 13, 2017, 11:53:13 AM10/13/17

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I had just realized this was working, but didn't understand why. I'm going to summarize it here...

in both cases, reserved words required a change to syntax to call the anonymous traversal.

python

as_(

gremlin

__.as(

python ALWAYS requires the as_(

gremlin you can do drop the underscores when chaining functions, but because the as is being passed as an argument in another step (and therefore is an anonymous function), you have to add the __

Robert Dale

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Marko Rodriguez

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Oct 13, 2017, 12:26:25 PM10/13/17

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See the WARNINGs:

http://tinkerpop.apache.org/docs/current/reference/#gremlin-groovy

http://tinkerpop.apache.org/docs/current/reference/#gremlin-python

Marko.

http://markorodriguez.com

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