Thanks :-)
On Mon, Jan 20, 2014 at 5:53 PM, Michael Hunger < [email protected]> wrote: > Good point, I should check the same thing in the java-rest-binding. > > Michael > > Am 20.01.2014 um 16:33 schrieb Gwendal Mousset <[email protected] > >: > > Hi, > > Michael, your patch works well with embedded database but not with neo4j > server. > Thanks for your help > > Gwendal > > On Friday, January 10, 2014 10:23:27 AM UTC+1, Gwendal Mousset wrote: >> >> Thank you very much Michael for your work and your reactivity ! >> >> On Friday, January 10, 2014 9:26:46 AM UTC+1, Michael Hunger wrote: >>> >>> Hi, >>> >>> its a bug in SDN, I fixed it here, in case you want to patch locally. >>> >>> https://github.com/spring-projects/spring-data-neo4j/ >>> blob/master/spring-data-neo4j/src/main/java/org/ >>> springframework/data/neo4j/support/conversion/ >>> ResultColumnValueExtractor.java#L75 >>> >>> if (returnType.isCollectionLike()) { >>> QueryResultBuilder qrb = new >>> QueryResultBuilder((Iterable)columnValue, >>> converter); >>> return qrb.to(returnType.getActualType().getType()).as( >>> returnType.getType()); >>> } else >>> return converter.convert(columnValue, returnType.getType(), >>> mappingPolicy); >>> } >>> >>> It will be part of the next release, thanks again for reporting it. >>> >>> Cheers >>> >>> Michael >>> >>> Am 09.01.2014 um 09:13 schrieb Gwendal Mousset <[email protected]>: >>> >>> A precision i missed, the exception is not thrown when i execute the >>> request but when i try accessing to Iterable<CategoryDAO> >>> getSubCategories(). >>> >>> >>> On Wednesday, January 8, 2014 1:47:18 PM UTC+1, Gwendal Mousset wrote: >>>> >>>> Hello, >>>> >>>> I have an issue with cypher request using collect() function. >>>> I'm using spring-data-neo4j 3.0.0-M1 and Neo4j 2.0.0-M06. >>>> >>>> In my data model i have Category nodes. >>>> Each category can have subcategories. >>>> I want to retrieve the top categories list with the associated >>>> subcategories. >>>> >>>> *Categ3* -- IS_SUBCATEGORY_OF --> *Categ1* <-- IS_SUBCATEGORY_OF -- >>>> *Categ2* >>>> >>>> *My request:* >>>> >>>> MATCH (cat:Category) >>>> WITH cat >>>> MATCH (cat)<-[?:IS_SUBCATEGORY_OF]-(subCat:Category) >>>> WHERE NOT cat-[:IS_SUBCATEGORY_OF]->() >>>> RETURN cat as category, collect(subCat) as subCategories >>>> >>>> >>>> The query result is exactly what i expect in the console: >>>> >>>> +----------------------------------------------------------- >>>> ------------------------------------------------------------ >>>> ---------------------------------+ >>>> | category | subCategories >>>> >>>> | >>>> +----------------------------------------------------------- >>>> ------------------------------------------------------------ >>>> ---------------------------------+ >>>> | Node[128]{id:"e9c27555f46c4acdb29c8d0e89814467"} | [] >>>> >>>> | >>>> | Node[176]{id:"78f7c907068c4e1abd018fe560c2c03a"} | [] >>>> >>>> | >>>> | Node[134]{id:"e362b9c05a8f41f0aee877f914f2658f"} | [] >>>> >>>> | >>>> | Node[136]{id:"7b3d58a89ebd4010964004d58e962526"} | [] >>>> >>>> | >>>> | Node[118]{id:"3378af0b1f54405fb7ab2970cba5bff3"} | [Node[34]{id:" >>>> d10cc4418c914c1281f7183da8109a4f"},Node[46]{id:" >>>> b3012831db924c22829a0335df2e90d1"}] | >>>> | Node[130]{id:"e3e290b4d2c648b3a6a7d0fe8da461ef"} | [] >>>> >>>> | >>>> | Node[138]{id:"eb828c120cb248c2a5baa92734e39b91"} | [] >>>> >>>> | >>>> | Node[132]{id:"057aeb6913474454a329571b9a266305"} | [] >>>> >>>> | >>>> | Node[126]{id:"2671039fa6f24f5b806df682c238d1c4"} | [Node[120]{id:" >>>> 48bc7f2b34db49bfb40936864a7a4a80"},Node[122]{id:" >>>> 373d94527286482fb8c807aee90d7f5e"}] | >>>> +----------------------------------------------------------- >>>> ------------------------------------------------------------ >>>> ---------------------------------+ >>>> >>>> >>>> *My QueryResult interface:* >>>> >>>> @QueryResult >>>> public interface CategoryWithSubCategories { >>>> >>>> >>>> /** >>>> * >>>> * @return A category. >>>> */ >>>> @ResultColumn("category") >>>> CategoryDAO getCategory(); >>>> >>>> /** >>>> * >>>> * @return The subcategories. >>>> */ >>>> @ResultColumn("subCategories") >>>> Iterable<CategoryDAO> getSubCategories(); >>>> } >>>> >>>> *My Query: * >>>> >>>> @Query("MATCH (cat:Category) " >>>> + "WITH cat " >>>> + "MATCH (cat)<-[?:IS_SUBCATEGORY_OF]-(subCat:Category) " >>>> + "WHERE NOT cat-[:IS_SUBCATEGORY_OF]->() " >>>> + "RETURN distinct cat as category, collect(subCat) as >>>> subCategories") >>>> Iterable<CategoryDAO> getAll(); >>>> >>>> When i call this method, i get an exception: >>>> >>>> java.lang.RuntimeException: Cannot extract single value from Iterable >>>> with more than one elements. >>>> at org.springframework.data.neo4j.conversion.DefaultConverter.e >>>> xtractSingle(DefaultConverter.java:60) >>>> at org.springframework.data.neo4j.conversion.DefaultConverter.e >>>> xtractValue(DefaultConverter.java:51) >>>> at org.springframework.data.neo4j.conversion.DefaultConverter.convert( >>>> DefaultConverter.java:40) >>>> at org.springframework.data.neo4j.support.conversion.EntityResu >>>> ltConverter.convert(EntityResultConverter.java:165) >>>> at org.springframework.data.neo4j.conversion.DefaultConverter.convert( >>>> DefaultConverter.java:36) >>>> at org.springframework.data.neo4j.rest.SpringRestGraphDatabase$ >>>> SpringResultConverter.convert(SpringRestGraphDatabase.java:148) >>>> at org.neo4j.rest.graphdb.util.QueryResultBuilder$1$1.underlyin >>>> gObjectToObject(QueryResultBuilder.java:98) >>>> at org.neo4j.helpers.collection.IteratorWrapper.next(IteratorWrapper. >>>> java:47) >>>> ... >>>> ... >>>> >>>> >>>> I think my code is quite similar with the exemple in documentation at >>>> http://docs.spring.io/spring-data/data-neo4j/docs/3.0.0.M1/ >>>> reference/htmlsingle/#reference_programming-model_mapresult >>>> >>>> Please could you tell me what i'm doing wrong ? >>>> >>>> Tank you >>>> >>>> >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Neo4j" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >>> >>> > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- Gwendal Mousset -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
