You can't use Object arrays, only arrays of strings, numbers or booleans. and this doesn't work as it only stores the java-to-string representation of an array, which is useless: > nodeProps.put(predicateName, valuesList.toString());
you shouldn't use exceptions for control-flow you can check value.getClass().isArray() and you can do class.getComponentType() to check the type of the array Michael > Am 08.02.2015 um 23:25 schrieb Aris Fergadis <[email protected]>: > > My new code snippet is the following: > > Map<String, Object> nodeProps = db.getNodeProperties(subjectNode); > if (nodeProps.get(predicateName) != null) { > try { // Property values might be an array > Object[] values = (Object[]) nodeProps.get(predicateName); > ArrayList<Object> valuesList = new ArrayList<>(Arrays.asList(values)); > valuesList.add(value); > nodeProps.put(predicateName, valuesList.toArray(new > Object[valuesList.size()])); > } catch (ClassCastException cce) { // or just a value > Object v = nodeProps.get(predicateName); > Object[] valuesList = new Object[]{v, value}; > nodeProps.put(predicateName, valuesList.toString()); > } > } else { > nodeProps.put(predicateName, value); > } > db.setNodeProperties(subjectNode, nodeProps); > > But in the graph I get: synonym [Ljava.lang.Object;@788ab663 > I get an exception if I use: > nodeProps.put(predicateName, valuesList.toString()); > > Which is the right way to put the Object array in nodeProprs.put? > > Τη Κυριακή, 8 Φεβρουαρίου 2015 - 10:28:10 μ.μ. UTC+2, ο χρήστης Aris Fergadis > έγραψε: > I am using neo4j community 2.1.6 edition and I have already posted a question > <http://stackoverflow.com/questions/28397457/neo4j-batchinserter-using-setnodeproperties-to-set-an-array-with-values> > in stackoverflow. > > My task is to import an ontology to Neo. So I read triples and insert nodes, > properties and relations. Many of my triples define multiple values for the > same property of a node. I want to set those values as an array in the > property. Unfortunately, the method > > setNodeProperties > <http://neo4j.com/api_docs/2.0.0/org/neo4j/unsafe/batchinsert/BatchInserter.html#setNodeProperties%28long,%20java.util.Map%29>(long > node, Map > <http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true><String > > <http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true>,Object > > <http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true>> > properties) > seems to doesn't fit my needs. > > Is there any way to achieve my goal? > > -- > 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] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- 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/d/optout.
