No problems, there are number of Gremlin users around here! Cheers,
/peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph database. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Tue, Oct 18, 2011 at 10:14 AM, skarab77 <[email protected]> wrote: > Hi All, > > I am sorry for my previous email, I made a mistake and chose a wrong mailing > list (neo4j instead of gremlin mailing list). > > Best Regards, > Wojtek > > > Dnia 18 października 2011 9:59 skarab77 <[email protected]> napisał(a): > >> I need a pipe, which returns a set of vertices for an input Vertex (wrapped >> in User Defined Step). I use blueprints pipes with Neo4j. My current code is: >> >> import org.junit.Test >> import com.tinkerpop.blueprints.pgm.Graph >> import com.tinkerpop.blueprints.pgm.Vertex >> import com.tinkerpop.blueprints.pgm.impls.neo4j.Neo4jVertex >> import com.tinkerpop.blueprints.pgm.impls.tg.TinkerGraphFactory >> import com.tinkerpop.gremlin.Gremlin >> import com.tinkerpop.pipes.AbstractPipe >> import com.tinkerpop.pipes.Pipe >> >> class MyUDSTest { >> >> public static class MyPipe extends AbstractPipe<Vertex, Iterable<Vertex>> { >> >> @Override >> protected Iterable<Vertex> processNextStart() throws >> NoSuchElementException { >> def v = this.starts.next(); >> >> def nodes = [v, v, v].iterator; >> >> return new Iterable<Vertex>() { >> @Override >> public Iterator<Vertex> iterator() { >> return new Iterator<Vertex>() { >> @Override >> public boolean hasNext() { >> return nodes.hasNext(); >> } >> >> @Override >> public Vertex next() { >> return new Neo4jVertex(nodes.next(), graph); >> } >> >> @Override >> public void remove() { >> throw new UnsupportedOperationException(); >> >> } >> }; >> } >> }; >> } >> >> } >> >> @Test >> public void testUDS() >> { >> Gremlin.load(); >> Graph g; >> Gremlin.defineStep('myPipe',[Vertex,Pipe], { new MyPipe() }) >> >> g = TinkerGraphFactory.createTinkerGraph() >> println "$g" >> def result = [] >> g.v(1).myPipe.filter{true} >> result >> >> result.each { >> println "$it" >> } >> >> } >> >> } >> >> However it does not work property in the gremlin expression: >> >> Gremlin.defineStep('myPipe',[Vertex,Pipe], { new MyPipe() }) >> ... >> def result = []; >> g.v(1).myPipe >> result >> >> result.each >> { >> println it >> } >> >> prints out: neo4j.MyUDSTest$MyPipe$1@49aacd5f. I would expect that I will >> get a list of vertices. Could anybody help me with this pipe? >> >> > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
