ok....i'm using giraph 1.1.0, hadoop 1.2.1 jena arq 2.12.0 and com.hp.hpl.jena 2.8.8; I've introduced the last one because there were class not found exceptions for query and queryfactory....i make use of these two classes to implement a simple select and just for the moment i'm using select* as query string to test the code!
2014-07-28 16:43 GMT+02:00 Andy Seaborne <[email protected]>: > On 28/07/14 15:00, Carmen Manzulli wrote: > >> Hi experts, >> >> i'm trying to use some jena classes (as Query and QueryFactory) in a >> project but when i run my code i get: >> >> java.lang.NoClassDefFoundError: >> com/hp/hpl/jena/shared/PrefixMapping$IllegalPrefixException >> at com.hp.hpl.jena.query.QueryFactory.create( >> QueryFactory.java:68) >> at com.hp.hpl.jena.query.QueryFactory.create( >> QueryFactory.java:40) >> at com.hp.hpl.jena.query.QueryFactory.create( >> QueryFactory.java:28) >> at sisinflab.Query2.compute(Query2.java:27) >> >> and also : >> >> java.lang.ClassNotFoundException: >> com.hp.hpl.jena.shared.PrefixMapping$IllegalPrefixException >> at java.net.URLClassLoader$1.run(URLClassLoader.java:366) >> at java.net.URLClassLoader$1.run(URLClassLoader.java:355) >> at java.security.AccessController.doPrivileged(Native Method) >> at java.net.URLClassLoader.findClass(URLClassLoader.java:354) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:425) >> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:358) >> ... 12 more >> >> who can help me? >> > > "NoClassDefFoundError" means it was there are compile time (of Jena) and > not at runtime (of your code). > > You have an incomplete or incompatible set of jars files. > > Andy > > PS Please could you include things like version numbers (needed for line > numbers to mean anything), the query in question, etc when describing > something. > > >> >
